Imperial, Missouri Weather Conditions

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Current Conditions

  • 32°
  • Overcast
  • Wind: ESE 7 mph
  • Humidity: 64%
  • Visibility: 10.0 miles
  • Dew Point: 21°
  • Pressure: 30.30 in. -
  • Heat Index: 26

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Click a section below for more information.

Next 12 Hours

8  pm
11  pm
2  am
5  am
8  am
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
Ice Pellets
Ice Pellets
Chance of Rain
Chance of Rain
29°
29°
30°
32°
36°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Chance of Rain
  • High: 52 °
  • Low: 23 °
  • Chance of Rain
  • Wednesday
  • Overcast
  • High: 24 °
  • Low: 10 °
  • Overcast
  • Thursday
  • Clear
  • High: 28 °
  • Low: 10 °
  • Clear
  • Friday
  • Clear
  • High: 44 °
  • Low: 25 °
  • Clear
  • Saturday
  • Clear
  • High: 52 °
  • Low: 30 °
  • Clear

Forecast for Imperial, Missouri

Updated: 7:15 PM CST on January 02, 2015

  • Light rain and ice late. Low -2C.

  • Cloudy with light rain or freezing rain developing overnight. Low -2C. Winds SE at 10 to 15 km/h. Chance of precip 50%.

  • Tomorrow

    Considerable cloudiness with occasional rain showers. High 11C. Winds SSW at 15 to 30 km/h. Chance of rain 50%.

  • Tomorrow

    Periods of rain. Some icy conditions developing late. Low near -5C. Winds NNW at 25 to 40 km/h. Chance of precip 70%.

  • Wednesday

    Cloudy skies. High -4C. Winds N at 15 to 30 km/h.

  • Wednesday

    Cloudy skies early, followed by partial clearing. Low -12C. Winds NNW at 15 to 30 km/h.

  • Thursday

    Sunny skies. High -2C. Winds NNW at 15 to 25 km/h.

  • Thursday

    Clear. Low -12C. Winds SE at 10 to 15 km/h.

  • Friday

    A mainly sunny sky. High 7C. Winds S at 15 to 25 km/h.

  • Friday

    Partly cloudy. Low -4C. Winds SSW at 10 to 15 km/h.

  • Saturday

    Sunny. High 11C. Winds WNW at 10 to 15 km/h.

  • Saturday

    A mostly clear sky. Low -1C. Winds NE at 10 to 15 km/h.

  • Sunday

    Generally sunny. High 11C. Winds SSW at 10 to 15 km/h.

  • Sunday

    Clear skies. Low around 0C. Winds WSW at 10 to 15 km/h.

  • Monday

    A mainly sunny sky. High 11C. Winds NW at 15 to 25 km/h.

  • Monday

    Clear skies. Low around 0C. Winds light and variable.

  • Tuesday

    A mainly sunny sky. High 14C. Winds S at 10 to 15 km/h.

  • Tuesday

    A mostly clear sky. Low 1C. Winds S at 10 to 15 km/h.

  • Wednesday

    A mainly sunny sky. High 17C. Winds SE at 10 to 15 km/h.

  • Wednesday

    Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 2C. Winds ESE at 10 to 15 km/h.

  • Thursday

    Considerable cloudiness. High 14C. Winds ESE at 15 to 25 km/h.

  • Thursday

    Mostly cloudy skies with a few showers late. Low 4C. Winds ESE at 10 to 15 km/h. Chance of rain 30%.

Severe Weather Alert Descriptions

 Special Statement  Statement as of 4:13 PM CST on March 2, 2015


... Another round of accumulating snow possible on Wednesday...

The latest forecast guidance suggests another round of snowfall
for the area on Wednesday. Early indications are that the northern
edge of the accumulating snowfall will be near the Interstate 70
corridor... with the heaviest accumulations occurring across
southeast Missouri and southern Illinois.

Its still too early to determine exact snowfalls with this storm
system... and a minor change in the location of the storm will
have a large impact on the snowfall any one location recieves.
However... there is a potential for 4 or more inches of snow south
of a Salem Missouri... Ste Genevieve line... with lesser
accumulations to the north.

This will be a potent winter weather maker for parts of southeast
Missouri and southern Illinois... and points south. Those planning
travel into these areas on Tuesday night... Wednesday... or
Wednesday night should carefullly monitor the latest forecast
information.



413 PM CST Mon Mar 2 2015

... Another round of accumulating snow possible on Wednesday...

The latest forecast guidance suggests another round of snowfall
for the area on Wednesday. Early indications are that the northern
edge of the accumulating snowfall will be near the Interstate 70
corridor... with the heaviest accumulations occurring across
southeast Missouri and southern Illinois.

Its still too early to determine exact snowfalls with this storm
system... and a minor change in the location of the storm will
have a large impact on the snowfall any one location recieves.
However... there is a potential for 4 or more inches of snow south
of a Salem Missouri... Ste Genevieve line... with lesser
accumulations to the north.

This will be a potent winter weather maker for parts of southeast
Missouri and southern Illinois... and points south. Those planning
travel into these areas on Tuesday night... Wednesday... or
Wednesday night should carefullly monitor the latest forecast
information.


413 PM CST Mon Mar 2 2015

... Another round of accumulating snow possible on Wednesday...

The latest forecast guidance suggests another round of snowfall
for the area on Wednesday. Early indications are that the northern
edge of the accumulating snowfall will be near the Interstate 70
corridor... with the heaviest accumulations occurring across
southeast Missouri and southern Illinois.

Its still too early to determine exact snowfalls with this storm
system... and a minor change in the location of the storm will
have a large impact on the snowfall any one location recieves.
However... there is a potential for 4 or more inches of snow south
of a Salem Missouri... Ste Genevieve line... with lesser
accumulations to the north.

This will be a potent winter weather maker for parts of southeast
Missouri and southern Illinois... and points south. Those planning
travel into these areas on Tuesday night... Wednesday... or
Wednesday night should carefullly monitor the latest forecast
information.




 Local Storm Report 



03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.





03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.





03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total




03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.





03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.





03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total




03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.





03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.





03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.





03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total




03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total





03/01/2015 0236 PM

Festus, Jefferson County.

Snow m6.0 inch, reported by trained spotter.


            Storm total





03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.






03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.






03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.






03/01/2015 1242 PM

Dittmer, Jefferson County.

Snow m6.5 inch, reported by trained spotter.






03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.






03/01/2015 1100 am

1 miles S of Herculaneum, Jefferson County.

Snow m5.8 inch, reported by amateur radio.






03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






03/01/2015 1109 am

Imperial, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






03/01/2015 0953 am

Hillsboro, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






03/01/2015 0830 am

Hematite, Jefferson County.

Snow m6.0 inch, reported by trained spotter.






03/01/2015 0830 am

Hematite, Jefferson County.

Snow m6.0 inch, reported by trained spotter.






03/01/2015 0823 am

Festus, Jefferson County.

Snow m5.8 inch, reported by trained spotter.






03/01/2015 0823 am

Festus, Jefferson County.

Snow m5.8 inch, reported by trained spotter.






03/01/2015 0722 am

Hillsboro, Jefferson County.

Snow e6.0 inch, reported by trained spotter.


            Snow has stopped at this time.





03/01/2015 0722 am

Hillsboro, Jefferson County.

Snow e6.0 inch, reported by trained spotter.


            Snow has stopped at this time.





03/01/2015 0707 am

Herculaneum, Jefferson County.

Snow m6.0 inch, reported by trained spotter.






03/01/2015 0707 am

Herculaneum, Jefferson County.

Snow m6.0 inch, reported by trained spotter.






03/01/2015 0639 am

Herculaneum, Jefferson County.

Heavy snow m6.0 inch, reported by trained spotter.


            Still snowing





03/01/2015 0639 am

Herculaneum, Jefferson County.

Heavy snow m6.0 inch, reported by trained spotter.


            Still snowing





03/01/2015 1217 am

Imperial, Jefferson County.

Snow e6.0 inch, reported by public.






03/01/2015 1217 am

Imperial, Jefferson County.

Snow e6.0 inch, reported by public.






02/28/2015 1121 PM

Cedar Hill, Jefferson County.

Snow m4.5 inch, reported by public.






02/28/2015 1121 PM

Cedar Hill, Jefferson County.

Snow m4.5 inch, reported by public.






02/28/2015 1125 PM

Festus, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






02/28/2015 1125 PM

Festus, Jefferson County.

Snow m5.0 inch, reported by trained spotter.






02/28/2015 1125 PM

2 miles S of Pevely, Jefferson County.

Snow m5.5 inch, reported by trained spotter.






02/28/2015 1125 PM

2 miles S of Pevely, Jefferson County.

Snow m5.5 inch, reported by trained spotter.






02/28/2015 1107 PM

Pevely, Jefferson County.

Heavy snow m6.0 inch, reported by public.






02/28/2015 1107 PM

Pevely, Jefferson County.

Heavy snow m6.0 inch, reported by public.






02/28/2015 1049 PM

Hillsboro, Jefferson County.

Heavy snow m6.0 inch, reported by broadcast media.






02/28/2015 1049 PM

Hillsboro, Jefferson County.

Heavy snow m6.0 inch, reported by broadcast media.






02/28/2015 1015 PM

Hillsboro, Jefferson County.

Snow m5.5 inch, reported by trained spotter.






02/28/2015 1015 PM

Hillsboro, Jefferson County.

Snow m5.5 inch, reported by trained spotter.






02/28/2015 1021 PM

Hematite, Jefferson County.

Snow m5.0 inch, reported by trained spotter.


            Some sleet mixing in.





02/28/2015 1021 PM

Hematite, Jefferson County.

Snow m5.0 inch, reported by trained spotter.


            Some sleet mixing in.





02/28/2015 0911 PM

Imperial, Jefferson County.

Snow m4.8 inch, reported by public.






02/28/2015 0911 PM

Imperial, Jefferson County.

Snow m4.8 inch, reported by public.






02/28/2015 0912 PM

De Soto, Jefferson County.

Snow m5.5 inch, reported by public.






02/28/2015 0912 PM

De Soto, Jefferson County.

Snow m5.5 inch, reported by public.






02/28/2015 0900 PM

High ridge, Jefferson County.

Snow m3.3 inch, reported by trained spotter.






02/28/2015 0900 PM

High ridge, Jefferson County.

Snow m3.3 inch, reported by trained spotter.






02/28/2015 0830 PM

1 miles W of Herculaneum, Jefferson County.

Snow e5.0 inch, reported by trained spotter.






02/28/2015 0830 PM

1 miles W of Herculaneum, Jefferson County.

Snow e5.0 inch, reported by trained spotter.






02/28/2015 0849 PM

High ridge, Jefferson County.

Snow m3.0 inch, reported by trained spotter.






02/28/2015 0849 PM

High ridge, Jefferson County.

Snow m3.0 inch, reported by trained spotter.






02/28/2015 0818 PM

Festus, Jefferson County.

Snow m4.5 inch, reported by broadcast media.






02/28/2015 0818 PM

Festus, Jefferson County.

Snow m4.5 inch, reported by broadcast media.






02/28/2015 0800 PM

Festus, Jefferson County.

Snow m4.0 inch, reported by trained spotter.






02/28/2015 0800 PM

Festus, Jefferson County.

Snow m4.0 inch, reported by trained spotter.






02/28/2015 0810 PM

De Soto, Jefferson County.

Snow m5.0 inch, reported by public.






02/28/2015 0810 PM

De Soto, Jefferson County.

Snow m5.0 inch, reported by public.






02/28/2015 0730 PM

Pevely, Jefferson County.

Snow e4.0 inch, reported by trained spotter.






02/28/2015 0658 PM

Herculaneum, Jefferson County.

Snow m3.5 inch, reported by trained spotter.






02/28/2015 0645 PM

Imperial, Jefferson County.

Snow m2.3 inch, reported by trained spotter.






02/28/2015 0730 PM

Pevely, Jefferson County.

Snow e4.0 inch, reported by trained spotter.






02/28/2015 0627 PM

Arnold, Jefferson County.

Snow e2.8 inch, reported by public.






02/28/2015 0715 PM

Arnold, Jefferson County.

Snow m3.2 inch, reported by public.






02/28/2015 0730 PM

Pevely, Jefferson County.

Snow e4.0 inch, reported by trained spotter.






02/28/2015 0730 PM

Pevely, Jefferson County.

Snow e4.0 inch, reported by trained spotter.






02/28/2015 0645 PM

Imperial, Jefferson County.

Snow m2.3 inch, reported by trained spotter.






02/28/2015 0636 PM

De Soto, Jefferson County.

Snow m3.0 inch, reported by public.






02/28/2015 0627 PM

Arnold, Jefferson County.

Snow e2.8 inch, reported by public.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0725 PM

Herculaneum, Jefferson County.

Snow m3.8 inch, reported by trained spotter.






02/28/2015 0725 PM

Herculaneum, Jefferson County.

Snow m3.8 inch, reported by trained spotter.






02/28/2015 0718 PM

De Soto, Jefferson County.

Snow m4.3 inch, reported by public.






02/28/2015 0718 PM

De Soto, Jefferson County.

Snow m4.3 inch, reported by public.






02/28/2015 0715 PM

Arnold, Jefferson County.

Snow m3.2 inch, reported by public.






02/28/2015 0715 PM

Arnold, Jefferson County.

Snow m3.2 inch, reported by public.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0658 PM

Herculaneum, Jefferson County.

Snow m3.5 inch, reported by trained spotter.






02/28/2015 0658 PM

Herculaneum, Jefferson County.

Snow m3.5 inch, reported by trained spotter.






02/28/2015 0537 PM

High ridge, Jefferson County.

Snow m1.5 inch, reported by trained spotter.






02/28/2015 0528 PM

Herculaneum, Jefferson County.

Snow m1.8 inch, reported by trained spotter.






02/28/2015 0514 PM

Herculaneum, Jefferson County.

Snow m1.0 inch, reported by trained spotter.






02/28/2015 0500 PM

Herculaneum, Jefferson County.

Snow m1.3 inch, reported by trained spotter.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0636 PM

De Soto, Jefferson County.

Snow m3.0 inch, reported by public.






02/28/2015 0636 PM

De Soto, Jefferson County.

Snow m3.0 inch, reported by public.






02/28/2015 0627 PM

Arnold, Jefferson County.

Snow e2.8 inch, reported by public.






02/28/2015 0627 PM

Arnold, Jefferson County.

Snow e2.8 inch, reported by public.






02/28/2015 0503 PM

De Soto, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0622 PM

3 miles se of Hematite, Jefferson County.

Snow m2.5 inch, reported by trained spotter.






02/28/2015 0436 PM

Pevely, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0537 PM

High ridge, Jefferson County.

Snow m1.5 inch, reported by trained spotter.






02/28/2015 0537 PM

High ridge, Jefferson County.

Snow m1.5 inch, reported by trained spotter.






02/28/2015 0528 PM

Herculaneum, Jefferson County.

Snow m1.8 inch, reported by trained spotter.






02/28/2015 0528 PM

Herculaneum, Jefferson County.

Snow m1.8 inch, reported by trained spotter.






02/28/2015 0514 PM

Herculaneum, Jefferson County.

Snow m1.0 inch, reported by trained spotter.






02/28/2015 0514 PM

Herculaneum, Jefferson County.

Snow m1.0 inch, reported by trained spotter.






02/28/2015 0500 PM

Herculaneum, Jefferson County.

Snow m1.3 inch, reported by trained spotter.






02/28/2015 0500 PM

Herculaneum, Jefferson County.

Snow m1.3 inch, reported by trained spotter.






02/28/2015 0503 PM

De Soto, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0503 PM

De Soto, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0436 PM

Pevely, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0436 PM

Pevely, Jefferson County.

Snow m1.3 inch, reported by public.






02/28/2015 0340 PM

De Soto, Jefferson County.

Snow m1.0 inch, reported by public.






02/28/2015 0340 PM

De Soto, Jefferson County.

Snow m1.0 inch, reported by public.





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: APRSWXNET Arnold MO US, Sulphur Springs, MO

Updated: 8:35 PM CST

Temperature: 31 °F Dew Point: 22 °F Humidity: 69% Wind: ESE at 1 mph Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: summerfield, Imperial, MO

Updated: 9:05 PM CST

Temperature: 31.3 °F Dew Point: 13 °F Humidity: 46% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Guardian Court, Arnold, MO

Updated: 9:00 PM CST

Temperature: 32.5 °F Dew Point: 21 °F Humidity: 62% Wind: North at - Pressure: 30.22 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: Arnold, MO

Updated: 9:03 PM CST

Temperature: 30.8 °F Dew Point: 23 °F Humidity: 72% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Arnold # 1, Arnold, MO

Updated: 8:58 PM CST

Temperature: 30.9 °F Dew Point: 20 °F Humidity: 64% Wind: SE at 6.7 mph Pressure: 30.30 in Hourly Precipitation: - Windchill: 24 °F Graphs

Location: APRSWXNET Imperial MO US, Imperial, MO

Updated: 8:34 PM CST

Temperature: 32 °F Dew Point: 24 °F Humidity: 72% Wind: SSE at 2 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: ARNOLD, Arnold, MO

Updated: 8:50 PM CST

Temperature: 30.0 °F Dew Point: - Humidity: 61% Wind: North at - Pressure: 29.57 in Hourly Precipitation: - Windchill: 30 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 9:05 PM CST

Temperature: 28.6 °F Dew Point: 20 °F Humidity: 70% Wind: ENE at 1.0 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Upper Moss Hollow Road, Barnhart, MO

Updated: 9:01 PM CST

Temperature: 33.3 °F Dew Point: 14 °F Humidity: 45% Wind: North at - Pressure: 29.64 in Hourly Precipitation: - Windchill: 33 °F Graphs

Location: Arnold, Arnold, MO

Updated: 9:05 PM CST

Temperature: 31.1 °F Dew Point: 21 °F Humidity: 67% Wind: SE at 2.0 mph Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Arrowhead STL County, Saint Louis, MO

Updated: 8:58 PM CST

Temperature: 30.6 °F Dew Point: 19 °F Humidity: 62% Wind: ESE at 3.2 mph Pressure: 30.33 in Hourly Precipitation: - Windchill: 27 °F Graphs

Location: Wynfield Terrace, St. Louis, MO

Updated: 9:05 PM CST

Temperature: 31.1 °F Dew Point: 16 °F Humidity: 53% Wind: SE at 2.0 mph Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 9:05 PM CST

Temperature: 31.2 °F Dew Point: 22 °F Humidity: 67% Wind: Calm Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: MesoWest HLCRST MO US UPR, Saint Louis, MO

Updated: 8:00 PM CST

Temperature: 32 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: High Ridge Fire District House #1, High Ridge, MO

Updated: 9:02 PM CST

Temperature: 32.2 °F Dew Point: 22 °F Humidity: 65% Wind: ESE at 11.0 mph Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 24 °F Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 9:05 PM CST

Temperature: 31.0 °F Dew Point: 21 °F Humidity: 67% Wind: ESE at 4.0 mph Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 9:05 PM CST

Temperature: 31.5 °F Dew Point: 16 °F Humidity: 53% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: San Luis Trails, Fenton, MO

Updated: 9:05 PM CST

Temperature: 30.1 °F Dew Point: 19 °F Humidity: 62% Wind: ESE at 3.0 mph Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 9:05 PM CST

Temperature: 30.9 °F Dew Point: 16 °F Humidity: 54% Wind: SE at 5.4 mph Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 25 °F Graphs

Location: Christopher Winds, Oakville, MO

Updated: 9:05 PM CST

Temperature: 30.6 °F Dew Point: 22 °F Humidity: 71% Wind: SE at 3.0 mph Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 9:05 PM CST

Temperature: 30.6 °F Dew Point: 22 °F Humidity: 71% Wind: ESE at 4.0 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Deerpath Acres Court, Saint Louis, MO

Updated: 9:00 PM CST

Temperature: 31.3 °F Dew Point: 20 °F Humidity: 64% Wind: North at - Pressure: 30.27 in Hourly Precipitation: - Windchill: 31 °F Graphs

Location: APRSWXNET Pevely MO US, Pevely, MO

Updated: 8:23 PM CST

Temperature: 30 °F Dew Point: 21 °F Humidity: 68% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Cathedral Drive, Saint Louis, MO

Updated: 9:00 PM CST

Temperature: 31.6 °F Dew Point: 23 °F Humidity: 70% Wind: North at - Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Hawkins/Smizer Mill, Fenton, MO

Updated: 9:05 PM CST

Temperature: 31.1 °F Dew Point: 22 °F Humidity: 69% Wind: ESE at 5.0 mph Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: MesoWest WARNK1 IL US UPR, Columbia, IL

Updated: 8:00 PM CST

Temperature: 30 °F Dew Point: - Humidity: - Wind: North at 255 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: -1 °F Graphs

Location: Bent Tree Trails, Fenton, MO

Updated: 8:53 PM CST

Temperature: 30.9 °F Dew Point: 20 °F Humidity: 64% Wind: ESE at 1.6 mph Pressure: 29.97 in Hourly Precipitation: - Windchill: 31 °F Graphs

Location: Herculaneum, Mott Street, Herculaneum, MO

Updated: 8:50 PM CST

Temperature: 31.8 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.85 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: St. Louis, MO

Updated: 9:05 PM CST

Temperature: 31.2 °F Dew Point: 22 °F Humidity: 68% Wind: North at 2.0 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: APRSWXNET Sappington MO US, Saint Louis, MO

Updated: 8:26 PM CST

Temperature: 32 °F Dew Point: 22 °F Humidity: 67% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: APRSWXNET Cedar Hill MO US, Cedar Hill, MO

Updated: 8:25 PM CST

Temperature: 31 °F Dew Point: 21 °F Humidity: 66% Wind: Calm Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Chesapeake on the Bluff, Columbia, IL

Updated: 9:04 PM CST

Temperature: 31.1 °F Dew Point: 18 °F Humidity: 57% Wind: ESE at 4.3 mph Pressure: 29.59 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Jefferson Barracks, Mehlville, MO

Updated: 9:05 PM CST

Temperature: 30.6 °F Dew Point: 20 °F Humidity: 64% Wind: ENE at 3.8 mph Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: BUCKLEY MEADOWS 4, Saint Louis, MO

Updated: 8:52 PM CST

Temperature: 30.7 °F Dew Point: 21 °F Humidity: 67% Wind: ENE at 2.7 mph Pressure: 30.04 in Hourly Precipitation: - Windchill: 31 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated aviation 
National Weather Service St Louis MO 
628 PM CST Mon Mar 2 2015 


Short term: (through late tonight) 
issued at 350 PM CST Mon Mar 2 2015 


Interesting forecast for tonight, as return flow develops in the 
wake of the retreating surface ridge. Resultant warm air advection/lift and 
moisture return should mean precipitation threat ramping up as the 
evening progresses, generally right over the County Warning Area and in the 
residually cold and relatively dry low level air mass. Soundings over 
the northeast half of the County Warning Area have a produced warm wedge aloft (as 
much as +5c around 850mb) with low levels remaining below freezing. 
With the above in mind, the key to the forecast is how rapidly 
surface temperatures will rebound after a brief bit of cooling this 
evening. Low level warm advection should also be attempting to push 
surface temps above freezing with time, but think that this will be 
a rather slow process with the existing snow cover and believe that 
the evaporative cooling that occurs once the precip starts may 
temporarly retard the slow northward push of the warmer air. In our 
far north, evaporative cooling processes are likely to cause a bit 
of sleet and perhaps even some snow to occur along with the freezing 
rain. 


Although quantitative precipitation forecast will be quite light, am concerned about the below 
freezing surface temps and the cold ground causing icing conditions 
on untreated pavement. Based on this reasoning, have opted to issue 
a Winter Weather Advisory for about the northeast half of the County Warning Area 
(along and north of a Mexico-St Louis-Salem Illinois line), where the 
coldest surface temps and slightly higher quantitative precipitation forecast will be co-located. 
Uncertain as to exactly when the precip will start, but think the 
"heaviest" will likely be during the overnight hours so will begin 
the advisory at 06z. Will run it long enough to the morning rush 
hour...14z Tuesday. 


Obviously, additions and/or deletions to the advisory area may be 
needed as precip and temp trends become a bit more clear. 


Truett 


Long term: (tuesday through next monday) 
issued at 350 PM CST Mon Mar 2 2015 


(tuesday-thursday) 


Once the freezing rain threat ends early, primary forecast concern 
on Tuesday is pop trends, as warm advection continues lift and 
moisture transport into the mid-Mississippi Valley. Hard to get a 
handle on exact precip trends as lift is rather broad and somewhat 
unfocused, but there does seem to be some model consensus that 
highest pops will become focused over the southeast half of the County Warning Area 
heading into the afternoon and early evening, with the strongest 
moisture advection and lift along and ahead of approaching cold 
front. Instability looks even more meager than before, so have 
removed thunder from forecast. 


Winter weather concerns return to the forecast Tuesday night and 
Wednesday as next round of cold Canadian air undercuts energetic 
southwest flow aloft. The rain over the southeast half of the County Warning Area 
will gradually change over to snow across the southeast half of the 
County Warning Area as the low level cloud air deepens, and by Wednesday morning 
thermal profiles support all snow across the County Warning Area. 


All of the synoptic guidance suggests a potent shortwave ejecting 
out of the longwave trof over the southern rockes and pushing into 
the Southern Plains during the day on Wednesday. Resultant warm air advection over 
the top of the deepening cold air to our south is expected to 
produce a band of heavy precip from Arkansas into the lower Ohio River 
valley. Southern sections of our County Warning Area will be on the northern 
fringes of this heavier precip. The last 2 days the NAM has been 
the northern outlier with this band of precip and this trend 
continued with the 12z run...so have continued to trend forecast to 
the more southward solutions of the GFS, Gem and European model (ecmwf). 


Early indications are that snow accumulations of 4-6 inches will be 
possible in our far southern areas, but a very slight shift in the 
track of the system is going to have a huge impact on exact 
amounts. Coordinated the potential for a Winter Storm Watch, but 
since the system is still 2 days away opted to wait another forecast 
cycle to see if we can get a better handle on the northern fringes 
of the system. However, snow potential will be highlighted in the 
severe weather potential statement and an Special Weather Statement. 


Current timing of shortwave is such that precip should wind down 
rapidly on Wednesday evening across the south. Secondary surge of 
colder air in the wake of the shortwave should mean clear, dry and 
cold weather heading into Thursday. 


(Friday through monday) 


Surface ridge to move to the south allowing southerly winds to 
return to the region Thursday night. After a cold start Friday 
morning in the single digits to upper teens, temperatures to 
moderate through the extended with highs in the mid 30s to mid 40s 
Friday, rising into the 40s and 50s for the rest of the weekend and 
into early next week. Dry conditions to prevail through the period. 


Truett/Byrd 


&& 


Aviation: (for the 00z tafs through 00z Tuesday evening) 
issued at 537 PM CST Mon Mar 2 2015 


Specifics for kuin: a lifting warm front will spread warmer air 
northward atop the colder air in place at the surface, creating 
conditions for freezing rain and sleet for a couple of hours 
overnight. There may also be some snow mixed in at times. Ceilings 
will likely fall to IFR once precipitation begins. As 
temperatures warm up above freezing, the rain will no longer 
freeze on contact with colder surfaces. Just beyond the end of the 
valid taf period, winds will turn northwesterly behind a cold 
front. 


Specifics for kcou: a lifting warm front will bring rain showers 
to the area tonight and tomorrow, but it is possible that 
precipitation will remain to the north and east of kcou. If 
any precipitation does occur at kcou overnight, BUFKIT soundings 
indicate that it would initially fall as light freezing rain until 
temperatures rise far enough to keep the rain from freezing on 
contact with cold surfaces. Ceilings will likely fall to IFR due 
to the increasingly moisture and nearby rain showers. Just beyond 
the end of the taf period, a cold front will cause a sharp wind 
shift from southwesterly to northwesterly. 


Specifics for kstl, kcps, ksus: a warm front will lift through the 
region tonight. The warm air aloft spreading over the much colder 
air at the surface will produce freezing rain and perhaps even a 
brief period of sleet for a couple of hours overnight based on 
BUFKIT soundings. The increasingly warm air mass spreading into 
the region will eliminate the "freezing" part of the freezing rain 
during the morning, but rain showers are expected to continue for 
most of the day on Tuesday. Ceilings will likely fall to IFR once 
precipitation begins. Even after the rain ends, lingering moisture 
should be sufficient for continued IFR ceilings and a few hours of 
drizzle until a cold front moves through after 04/00z. Initially 
southeasterly winds become southerly then southwesterly behind the 
warm front on Tuesday, then turn sharply northwesterly behind the 
cold front on Tuesday night. 


Kanofsky 


&& 


Lsx watches/warnings/advisories: 
MO...Winter Weather Advisory from midnight tonight to 8 am CST 
Tuesday for Audrain MO-Knox MO-Lewis MO-Lincoln MO-Marion 
MO-Monroe MO-Montgomery MO-Pike MO-Ralls MO-Shelby MO-St. 
Charles MO-St. Louis city MO-St. Louis MO-Warren MO. 


Illinois...Winter Weather Advisory from midnight tonight to 8 am CST 
Tuesday for Adams Illinois-Bond Illinois-Brown Illinois-Calhoun Illinois-Clinton Illinois- 
Fayette Illinois-Greene Illinois-Jersey Illinois-Macoupin Illinois-Madison Illinois- 
Marion Illinois-Montgomery Illinois-Pike IL-St. Clair Illinois. 


&& 


$$ 


Weather forecast office lsx 












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