Hazelwood, Missouri Weather Conditions

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Excessive Heat Warning View All Alerts

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Current Conditions

  • 76°
  • Scattered Clouds
  • Wind: ESE 6 mph
  • Humidity: 87%
  • Visibility: 10.0 miles
  • Dew Point: 72°
  • Pressure: 29.94 in. -

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Next 12 Hours

1  am
4  am
7  am
10  am
1  pm
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Overcast
Overcast
Partly Cloudy
Partly Cloudy
81°
79°
79°
84°
93°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Partly Cloudy
  • High: 97 °
  • Low: 75 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 95 °
  • Low: 77 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 93 °
  • Low: 75 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 97 °
  • Low: 75 °
  • Partly Cloudy
  • Monday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 75 °
  • Chance of a Thunderstorm

Forecast for Hazelwood, Missouri

Updated: 10:00 PM CDT on August 20, 2014

Excessive heat warning in effect until 7 PM CDT Sunday...
  • Thursday

    Overcast in the morning, then partly cloudy. High of 97F with a heat index of 104F. Winds from the SW at 5 to 15 mph.

  • Thursday Night

    Partly cloudy. Low of 75F. Winds from the SSW at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 95F with a heat index of 104F. Winds from the SW at 5 to 10 mph.

  • Friday Night

    Partly cloudy in the evening, then clear. Low of 77F. Winds from the SW at 5 to 10 mph.

  • Saturday

    Partly cloudy. High of 93F. Winds from the SW at 5 to 10 mph.

  • Saturday Night

    Partly cloudy in the evening, then clear. Low of 75F. Winds from the SSW at 5 to 10 mph.

  • Sunday

    Partly cloudy. High of 97F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Low of 75F. Winds from the SE at 5 to 10 mph.

  • Monday

    Partly cloudy with a chance of a thunderstorm and rain. High of 97F with a heat index of 102F. Winds less than 5 mph. Chance of rain 20%.

  • Monday Night

    Clear with a chance of a thunderstorm. Low of 75F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm. High of 91F with a heat index of 97F. Winds from the South at 5 to 10 mph. Chance of rain 40%.

  • Tuesday Night

    Clear with a chance of a thunderstorm. Low of 73F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.

  • Wednesday

    Mostly cloudy with a chance of a thunderstorm. High of 88F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Wednesday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 68F. Winds from the SSW at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Thursday

    Mostly cloudy with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 50%.

  • Thursday Night

    Mostly cloudy. Fog overnight. Low of 63F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 77F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 61F. Winds less than 5 mph.

  • Saturday

    Clear. High of 81F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 61F. Winds less than 5 mph.

  • Sunday

    Clear. High of 82F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 61F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Excessive Heat Warning  Statement as of 3:33 PM CDT on August 20, 2014


... Excessive heat warning remains in effect until 7 PM CDT
Sunday...

* timing... dangerous levels of heat and humidity will continue
for the rest of the week and into the upcoming weekend.

* Heat index values... up to 108.

* Impacts... the combination of hot temperatures and high humidity
will lead to an increased risk of heat-related stress and
illness. The very Young... the elderly... those without air
conditioning... and those participating in strenuous outdoor
activities will be the most susceptible. Also... car interiors
will reach lethal temperatures in a matter of minutes. Beat the
heat... check the backseat! Never leave children or pets
unattended in a vehicle... not even for a minute.

Precautionary/preparedness actions...

Take extra precautions if you work or spend time outside. When
possible... reschedule strenuous activities to the early morning
or evening. Know the signs and symptoms of heat exhaustion and
heat stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work... the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency. Call 9-1-1 immediately.

People in the St. Louis metropolitan area can get information
about cooling centers or energy assistance related to the
excessive heat by calling the United way of greater St. Louis at
800-427-4626... or if calling from a land line phone dial 2-1-1.
You can also call cool down St. Louis at 314-241-7668.






 Local Storm Report 



08/20/2014 0745 PM

Chesterfield, St Louis County.

Thunderstorm wind damage, reported by broadcast media.


            Medium sized tree down blocking old Chesterfield Road.





08/20/2014 0740 PM

3 miles W of Chesterfield, St Louis County.

Thunderstorm wind gust m43 mph, reported by ASOS.





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Riverwood Place, Florissant, MO

Updated: 1:17 AM CDT

Temperature: 74.8 °F Dew Point: 73 °F Humidity: 94% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: 1 Mile South of St. Louis Lambert Airport, Woodson Terrace, MO

Updated: 1:17 AM CDT

Temperature: 74.3 °F Dew Point: 73 °F Humidity: 96% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: St. Ann, MO, St. Ann, MO

Updated: 1:09 AM CDT

Temperature: 74.3 °F Dew Point: 72 °F Humidity: 93% Wind: SW at 3.2 mph Pressure: 29.88 in Hourly Precipitation: - Heat Index: 72 °F Graphs

Location: Earth City, Earth City, MO

Updated: 2:07 AM EDT

Temperature: 75.9 °F Dew Point: 73 °F Humidity: 91% Wind: ESE at 5.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Jost Farm, Florissant, MO

Updated: 1:15 AM CDT

Temperature: 72.7 °F Dew Point: 66 °F Humidity: 78% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Maryland Heights, St Louis, MO

Updated: 1:14 AM CDT

Temperature: 75.3 °F Dew Point: 74 °F Humidity: 96% Wind: ESE at 3.0 mph Pressure: 29.28 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Historic Saint Charles, Saint Charles, MO

Updated: 1:15 AM CDT

Temperature: 74.9 °F Dew Point: 74 °F Humidity: 96% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Lindenwood, St. Charles, MO

Updated: 1:16 AM CDT

Temperature: 73.9 °F Dew Point: 73 °F Humidity: 98% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 70 °F Graphs

Location: Graeser Acres, St. Louis, MO

Updated: 1:17 AM CDT

Temperature: 74.5 °F Dew Point: 72 °F Humidity: 90% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Quiet Village, Creve Coeur, MO

Updated: 1:17 AM CDT

Temperature: 75.1 °F Dew Point: 74 °F Humidity: 96% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Talbridge, St. Charles, MO

Updated: 1:16 AM CDT

Temperature: 74.7 °F Dew Point: 73 °F Humidity: 94% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 1.92 in Heat Index: 73 °F Graphs

Location: Creve Coeur, St. Louis, MO

Updated: 1:16 AM CDT

Temperature: 71.8 °F Dew Point: 72 °F Humidity: 100% Wind: Calm Pressure: 29.53 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Creve Coeur Airport, Maryland Heights, MO

Updated: 1:10 AM CDT

Temperature: 73.9 °F Dew Point: 73 °F Humidity: 97% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 70 °F Graphs

Location: Ross Ave, St. Louis, MO

Updated: 1:17 AM CDT

Temperature: 73.9 °F Dew Point: 70 °F Humidity: 89% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Whispering Hills, Creve Coeur, MO

Updated: 1:17 AM CDT

Temperature: 75.0 °F Dew Point: 74 °F Humidity: 95% Wind: SSE at 1.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Ladue Meadows, Creve Coeur, MO

Updated: 1:17 AM CDT

Temperature: 74.1 °F Dew Point: 71 °F Humidity: 91% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: De Smet Jesuit High School, Creve Coeur, MO

Updated: 1:14 AM CDT

Temperature: 74.2 °F Dew Point: 70 °F Humidity: 86% Wind: ESE at 2.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Chesterfield (East), Chesterfield, MO

Updated: 1:16 AM CDT

Temperature: 74.9 °F Dew Point: 74 °F Humidity: 96% Wind: ESE at 1.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Saint Charles Hills, Saint Charles, MO

Updated: 1:17 AM CDT

Temperature: 74.2 °F Dew Point: 73 °F Humidity: 96% Wind: East at 1.2 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Wilshire Valley, St. Charles, MO

Updated: 1:02 AM CDT

Temperature: 74.3 °F Dew Point: 68 °F Humidity: 82% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Danielle Downs, St. Peters, MO

Updated: 1:17 AM CDT

Temperature: 74.3 °F Dew Point: 74 °F Humidity: 99% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Foxborough Estates, St. Charles, MO

Updated: 1:17 AM CDT

Temperature: 74.3 °F Dew Point: 73 °F Humidity: 96% Wind: North at 1.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Parkridge, Brentwood, MO

Updated: 1:17 AM CDT

Temperature: 75.0 °F Dew Point: - Humidity: - Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: West Drive, St. Peters, MO

Updated: 1:17 AM CDT

Temperature: 73.9 °F Dew Point: 73 °F Humidity: 95% Wind: ESE at 1.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Harvester, St. Charles, MO

Updated: 1:06 AM CDT

Temperature: 73.8 °F Dew Point: 73 °F Humidity: 98% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: www.seedgeeks.com, Brentwood, MO

Updated: 1:14 AM CDT

Temperature: 73.9 °F Dew Point: 74 °F Humidity: 99% Wind: Calm Pressure: 29.91 in Hourly Precipitation: - Heat Index: - Graphs

Location: Polestar Boating Center, St. Charles, MO

Updated: 1:17 AM CDT

Temperature: 71.7 °F Dew Point: 70 °F Humidity: 95% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Alton - Beacon, Alton, IL

Updated: 1:17 AM CDT

Temperature: 74.0 °F Dew Point: 72 °F Humidity: 92% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Alton - Christian Hill Area, Alton, IL

Updated: 1:15 AM CDT

Temperature: 72.8 °F Dew Point: 69 °F Humidity: 89% Wind: NE at 1.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 71 °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 
1121 PM CDT Wed Aug 20 2014 


Short term: (through late tonight) 
issued at 312 PM CDT Wed Aug 20 2014 


Isolated sh/ts are possible tonight across parts of extreme 
northeastern MO through west central and southwest Illinois. 
Precipitation should tend to lift northeastward with time. 


Kanofsky 


Long term: (thursday through next wednesday) 
issued at 312 PM CDT Wed Aug 20 2014 


The primary forecast concern over the next several days is the 
increasing heat and humidity. An upper level ridge will build 
across the region and remain in place through the weekend. 850 mb 
temperatures are forecast to rise to 20-24 deg c through early 
next week, which translates to highs in the mid to upper 90s. 
South to southwest surface winds will continue to transport a 
moist air mass into the region, keeping dew points in the mid 60s 
to mid 70s. 


The combination of hot temperatures and a humid air mass will 
produce heat index values over 100 deg f for 4 days over most of 
the lsx cwa, and some areas should reach values of 105-107 at 
times. The going heat advisory and excessive heat warning both 
still look reasonable given concerns about dew points mixing out 
near the Ozarks. There is some concern that the heat advisory may 
need to be extended farther north because forecast heat index 
values are just shy of the 4-day duration criteria across the 
northern County Warning Area (the difference is within the margin of error for 
T/TD forecasting) and this has been a fairly mild Summer overall. 
After coordination with neighboring offices, we will hold off on 
expanding the heat advisory northward and let the next shift take 
another look. 


This has been a fairly mild Summer so far, and most people have not 
yet become acclimated to extended periods of hot/humid weather. Heat 
safety tips are available here: www.NWS.NOAA.Gov/om/heat/index.Shtml 


The 12z model runs depict significant differences regarding how the 
ridge breaks down next week in response to a strong trough moving 
into the northwestern US. At this time, it looks like the next 
opportunity for widespread organized rainfall would be associated 
with that pattern transition during middle/late next week. 


Kanofsky 


&& 


Aviation: (for the 06z tafs through 06z Thursday night) 
issued at 1043 PM CDT Wed Aug 20 2014 


Complex of showers and thunderstorms which brought locally heavy 
rain and strong wind gusts is currently moving into south-central 
Illinois away from taf sites. Rest of the tonight and tomorrow 
period will likely be dry...though secondary warm front which 
helped trigger organized convection earlier is still forecast to 
eventually move back north and east tonight. Also cannot rule out 
some diurnal airmass type thunderstorms tomorrow as capping does 
not look too strong. Will keep tafs though dry for now due to a 
low confidence in either one of these scenarios actually 
occurring. Other issue in the short term is fog potential as skies 
are already clearing out behind the mesoscale convective system in Illinois. Will have to 
monitor this close through the night as combination of clear skies 
and high dewpoints may cause fog development overnight 
tonight...especially at ksus and kcps which received some heavy 
rainfall earlier this evening. One factor that may preclude fog 
development is winds look to stay up aoa 5 knots. 




Specifics for kstl: 


Rest of the tonight and tomorrow period will likely be 
dry at the terminal...though secondary warm front which helped trigger 
organized convection earlier is still forecast to eventually move 
back north and east tonight. Also cannot rule out some diurnal 
airmass type thunderstorms tomorrow as capping does not look too 
strong. Will keep taf though dry for now due to a low confidence 
in either one of these scenarios actually occurring. Other 
potential in the short term is fog...but believe winds should stay 
up enough so will not include in taf for now but will monitor 
overnight as it is a possibility due to clearing skies and very 
high dewpoints/low level moisture. 




Gosselin 


&& 


Lsx watches/warnings/advisories: 
MO...heat advisory until 7 PM CDT Sunday for Audrain MO-Boone MO- 
Callaway MO-Cole MO-Franklin MO-Gasconade MO-Jefferson MO- 
Lincoln MO-Madison MO-Moniteau MO-Montgomery MO-Osage MO- 
St. Charles MO-St. Francois MO-Ste. Genevieve MO-Warren MO. 


Excessive heat warning until 7 PM CDT Sunday for St. Louis city 
MO-St. Louis MO. 


Illinois...heat advisory until 7 PM CDT Sunday for Bond Illinois-Calhoun Illinois- 
Clinton Illinois-Greene Illinois-Jersey Illinois-Macoupin Illinois-Marion Illinois-Monroe 
Illinois-Randolph Illinois-Washington Illinois. 


Excessive heat warning until 7 PM CDT Sunday for Madison IL-St. 
Clair Illinois. 


&& 


$$ 


Weather forecast office lsx 












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