Herculaneum, Missouri Weather Conditions

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Current Conditions

  • 84°
  • Mostly Cloudy
  • Wind: NW 5 mph
  • Humidity: 47%
  • Visibility: 10.0 miles
  • Dew Point: 62°
  • Pressure: 29.83 in. -
  • Heat Index: 84

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Next 12 Hours

5  pm
8  pm
11  pm
2  am
5  am
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Clear
Clear
84°
79°
73°
70°
68°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Partly Cloudy
  • High: 88 °
  • Low: 69 °
  • Partly Cloudy
  • Wednesday
  • Thunderstorm
  • High: 78 °
  • Low: 68 °
  • T-Storms
  • Thursday
  • Partly Cloudy
  • High: 81 °
  • Low: 67 °
  • Partly Cloudy
  • Friday
  • Chance of a Thunderstorm
  • High: 80 °
  • Low: 67 °
  • Chance of T-Storms
  • Saturday
  • Chance of a Thunderstorm
  • High: 82 °
  • Low: 68 °
  • Chance of T-Storms

Forecast for Herculaneum, Missouri

Updated: 4:01 PM CDT on January 29, 2015

  • Monday

    Partly cloudy. Lows overnight in the upper 60s.

  • Monday Night

    Partly cloudy skies. A stray shower or thunderstorm is possible. Low 67F. Winds W at 5 to 10 mph.

  • Tuesday

    Sunshine and clouds mixed. A stray shower or thunderstorm is possible. High 88F. Winds WNW at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy in the evening. Increasing clouds with periods of showers after midnight. Low 69F. Winds NNW at 5 to 10 mph. Chance of rain 60%.

  • Wednesday

    Thunderstorms likely. A few storms may be severe. High 78F. Winds SW at 5 to 10 mph. Chance of rain 90%.

  • Wednesday Night

    Thunderstorms likely in the evening. Then the chance of scattered thunderstorms later on. Low 68F. Winds light and variable. Chance of rain 80%.

  • Thursday

    Intervals of clouds and sunshine. High 81F. Winds NE at 5 to 10 mph.

  • Thursday Night

    Mostly cloudy skies early with showers developing late. Low 67F. Winds NE at 5 to 10 mph. Chance of rain 50%.

  • Friday

    Scattered showers and thunderstorms. High around 80F. Winds NW at 5 to 10 mph. Chance of rain 50%.

  • Friday Night

    Partly cloudy. Low 67F. Winds NNW at 5 to 10 mph.

  • Saturday

    Variable clouds with scattered thunderstorms. High 82F. Winds light and variable. Chance of rain 60%.

  • Saturday Night

    Partly cloudy in the evening followed by scattered thunderstorms after midnight. Low 68F. Winds light and variable. Chance of rain 40%.

  • Sunday

    Partly to mostly cloudy skies with scattered thunderstorms mainly in the morning. High near 85F. Winds SSW at 10 to 15 mph. Chance of rain 40%.

  • Sunday Night

    Variable clouds with scattered showers and thunderstorms, mainly overnight. Low 72F. Winds SSW at 5 to 10 mph. Chance of rain 40%.

  • Monday

    Mixed clouds and sun with scattered thunderstorms. High 89F. Winds SW at 10 to 15 mph. Chance of rain 50%.

  • Monday Night

    A few clouds. Low 72F. Winds SW at 5 to 10 mph.

  • Tuesday

    Intervals of clouds and sunshine. High 86F. Winds WSW at 5 to 10 mph.

  • Tuesday Night

    Scattered showers and thunderstorms. Low near 70F. Winds WSW at 5 to 10 mph. Chance of rain 50%.

  • Wednesday

    Variable clouds with scattered thunderstorms. High 88F. Winds W at 5 to 10 mph. Chance of rain 50%.

  • Wednesday Night

    Partly to mostly cloudy with a chance of thunderstorms. Low around 70F. Winds NNW at 5 to 10 mph. Chance of rain 40%.

  • Thursday

    Sunshine and clouds mixed. High 87F. Winds NW at 5 to 10 mph.

  • Thursday Night

    Variable clouds with a slight chance of thunderstorms overnight. Low around 70F. Winds ENE at 5 to 10 mph. Chance of rain 30%.

Severe Weather Alert Descriptions

 Flood Warning  Statement as of 11:43 am CDT on June 29, 2015


The Flood Warning continues for
the Meramec river near Arnold
* at 11:00 am Monday the stage was 34.3 feet.
* Flood stage is 24.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Forecast: the river will continue rising to near 35.2 feet by
early tomorrow afternoon then begin falling.
* Impact: at 35.1 feet... intersection of romaine Creek Road and old
Missouri 141 begins flooding.
* Impact: at 35.0 feet... water gets into the pool at Springdale Park
on Highway 141. Also, Covered Bridge RV park and storage begins
flooding near this height east of Highway 141.
* Impact: at 34.5 feet... widman park along Telegraph Road begins
flooding near this height. Also, Meramec bottom Road floods near
Quail Creek Golf club.
* Impact: at 33.0 feet... Springdale Park floods at this height.
* Impact: at 30.0 feet... Wells Road below suson Woods begins flooding
at this height.
* Impact: at 27.0 feet... Meramec bottom Road between Wells Road and
kerth Road begins flooding near this height.
* Impact: at 26.0 feet... house at the end of kasebaum Lane is
surrounded by water just west of Lemay Ferry Road bridge. Also,
Hawkins Road south of Meramec bottom Road is closed near this
height.
* Impact: at 25.1 feet... St. Louis County closes the following roads
at this height: Butler Hill west of summerhedge place, Meramec
bottom Road between Hageman Road and Highway 21, Hawkins Road south
of Meramec bottom Road, and old Telegraph Road at Earl widman
County park.
* Impact: at 24.7 feet... Hawkins Road south of Meramec bottom Road
begins flooding.
* Impact: at 24.0 feet... corisande hills Road begins flooding at this
height. Meramec bottom Road between Hageman Road and Highway 21
begins flooding.
* Impact: at 23.5 feet... the boat ramps and fishing banks at Arnold
City Park and at the Flamm City access on the West Bank near the
Telegraph Road bridge are flooded.
* Impact: at 23.0 feet... old Telegraph Road at Earl widman County
park and Butler Hill Road west beyond summerhedge place begin
flooding. Heintz Road between Telegraph and erb also floods near
this height.

                   Fld latest 7 a.M. Forecast
location stg obs stg 06/30 07/01 07/02 07/03 07/04

Meramec river
Arnold 24.0 34.35 35.1 35.1 33.8 32.0 29.7




Lat... Lon 3851 9043 3851 9039 3845 9032 3841 9034
     3845 9043







1143 am CDT Mon Jun 29 2015

The Flood Warning continues for
the Meramec river at Valley Park
* at 11:00 am Monday the stage was 16.2 feet.
* Flood stage is 16.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast: the river will continue rising to near 16.6 feet by
early tomorrow afternoon. The river will fall below flood stage
Wednesday afternoon.
* Impact: at 16.0 feet... flood stage. Minor flooding begins. Buder
Park begins to flood.
* Impact: at 12.0 feet... sluice gates at 5th street, 3rd street, and
fishpot creek at Union Pacific railway tracks must be closed.

                   Fld latest 7 a.M. Forecast
location stg obs stg 06/30 07/01 07/02 07/03 07/04

Meramec River
Valley Park 16.0 16.19 16.5 16.4 15.1 12.9 10.8




Lat... Lon 3854 9056 3855 9056 3857 9043 3851 9044








 Local Storm Report 



06/28/2015 0830 PM

2 miles S of De Soto, Jefferson County.

Funnel cloud, reported by trained spotter.





06/28/2015 0830 PM

2 miles S of De Soto, Jefferson County.

Funnel cloud, reported by trained spotter.





06/28/2015 0830 PM

2 miles S of De Soto, Jefferson County.

Funnel cloud, reported by trained spotter.






06/28/2015 0830 PM

2 miles S of De Soto, Jefferson County.

Funnel cloud, reported by trained spotter.





 Public Information Statement  Statement as of 1:07 PM CDT on June 29, 2015


... St. Peters tornado given a preliminary rating of EF-2... .

National Weather Service storm survey team has determined that
the maximum damage produced by yesterday evenings tornado on the
north side of St. Peters was EF2... with estimated winds of around
120 mph. This damage was to house near the intersection of
silvers Road and Highway c... about 2 miles north of mid rivers
mall.

It appears that the maximum width was about 350 yards. The survey
team is still trying to determine the path length, but flooding in
the area is hindering their efforts.

The survey team will be heading up to the Eolia area shortly.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: APRSWXNET, Pevely, MO

Updated: 5:44 PM CDT

Temperature: 86 °F Dew Point: 69 °F Humidity: 58% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Upper Moss Hollow Road, Barnhart, MO

Updated: 6:06 PM CDT

Temperature: 83.1 °F Dew Point: 70 °F Humidity: 64% Wind: North at - Pressure: 29.24 in Hourly Precipitation: - Heat Index: 87 °F Graphs

Location: MesoWest, Maeystown, IL

Updated: 5:20 PM CDT

Temperature: 81 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Imperial - Wellington Subdivision, Imperial, MO

Updated: 6:08 PM CDT

Temperature: 85.7 °F Dew Point: 69 °F Humidity: 58% Wind: NNW at 1.2 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: On The Bluffs, Waterloo, IL

Updated: 6:08 PM CDT

Temperature: 82.8 °F Dew Point: 66 °F Humidity: 56% Wind: Calm Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: summerfield, Imperial, MO

Updated: 6:08 PM CDT

Temperature: 88.0 °F Dew Point: 67 °F Humidity: 50% Wind: Calm Pressure: 29.60 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Main Street, Fults, IL

Updated: 6:06 PM CDT

Temperature: 81.9 °F Dew Point: 76 °F Humidity: 81% Wind: North at - Pressure: 29.46 in Hourly Precipitation: - Heat Index: 89 °F Graphs

Location: APRSWXNET, Sulphur Springs, MO

Updated: 5:35 PM CDT

Temperature: 83 °F Dew Point: 66 °F Humidity: 57% Wind: West at 2 mph Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Hillsboro, Missouri, Hillsboro, MO

Updated: 5:54 PM CDT

Temperature: 95.9 °F Dew Point: 68 °F Humidity: 40% Wind: Calm Pressure: 29.65 in Hourly Precipitation: - Heat Index: 101 °F Graphs

Location: Guardian Court, Arnold, MO

Updated: 6:05 PM CDT

Temperature: 87.1 °F Dew Point: 70 °F Humidity: 57% Wind: North at - Pressure: 29.81 in Hourly Precipitation: - Heat Index: 92 °F Graphs

Location: Arrowhead STL County, Saint Louis, MO

Updated: 5:56 PM CDT

Temperature: 90.0 °F Dew Point: 65 °F Humidity: 44% Wind: NNW at 3.2 mph Pressure: 29.93 in Hourly Precipitation: - Heat Index: 92 °F Graphs

Location: Arnold # 1, Arnold, MO

Updated: 5:54 PM CDT

Temperature: 89.2 °F Dew Point: 66 °F Humidity: 47% Wind: Calm Pressure: 29.85 in Hourly Precipitation: - Heat Index: 92 °F Graphs

Location: 6735 Wynfield Terrace Dr., St. Louis, MO

Updated: 6:08 PM CDT

Temperature: 91.2 °F Dew Point: 58 °F Humidity: 33% Wind: SSE at 1.3 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Arnold, MO

Updated: 6:05 PM CDT

Temperature: 81.0 °F Dew Point: 72 °F Humidity: 75% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Arnold, Arnold, MO

Updated: 6:05 PM CDT

Temperature: 83.9 °F Dew Point: 69 °F Humidity: 61% Wind: NNW at 1.0 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Oakville, Cliffwood Trail, Oakville, MO

Updated: 6:08 PM CDT

Temperature: 87.6 °F Dew Point: 62 °F Humidity: 42% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: APRSWXNET, Cedar Hill, MO

Updated: 5:49 PM CDT

Temperature: 82 °F Dew Point: 71 °F Humidity: 69% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Christopher Winds, Oakville, MO

Updated: 6:08 PM CDT

Temperature: 83.1 °F Dew Point: 66 °F Humidity: 56% Wind: North at 1.0 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Rock Creek Terrace, High Ridge, MO

Updated: 6:08 PM CDT

Temperature: 81.6 °F Dew Point: 68 °F Humidity: 64% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Hardy Acres / AA9UC, Waterloo, IL

Updated: 6:08 PM CDT

Temperature: 84.7 °F Dew Point: 67 °F Humidity: 55% Wind: SW at 2.5 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Oakville, Cardinal Creek Subd, Oakville, MO

Updated: 6:08 PM CDT

Temperature: 82.9 °F Dew Point: 71 °F Humidity: 67% Wind: NW at 1.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: House Springs, House Springs, MO

Updated: 6:07 PM CDT

Temperature: 81.1 °F Dew Point: 64 °F Humidity: 56% Wind: SW at 1.0 mph Pressure: 26.69 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Saint Louis County, Saint Louis County, MO

Updated: 6:05 PM CDT

Temperature: 85.2 °F Dew Point: 70 °F Humidity: 61% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Oakville, Providence Pointe, Oakville, MO

Updated: 6:08 PM CDT

Temperature: 86.2 °F Dew Point: 66 °F Humidity: 51% Wind: NW at 5.2 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Olde Mill Estates, Byrnes Mill, MO

Updated: 6:08 PM CDT

Temperature: 84.9 °F Dew Point: 67 °F Humidity: 55% Wind: NW at 2.2 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Cathedral Drive, Saint Louis, MO

Updated: 6:05 PM CDT

Temperature: 82.4 °F Dew Point: 71 °F Humidity: 68% Wind: North at - Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Brookton Oaks Drive, Cedar Hill, MO

Updated: 6:06 PM CDT

Temperature: 89.2 °F Dew Point: 69 °F Humidity: 50% Wind: North at - Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 93 °F Graphs

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

Updated: 5:59 PM CDT

Temperature: 84.7 °F Dew Point: 67 °F Humidity: 56% Wind: WNW at 2.0 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Lakeview Ridge Drive, Fenton, MO

Updated: 6:05 PM CDT

Temperature: 90.1 °F Dew Point: 72 °F Humidity: 54% Wind: North at - Pressure: 29.87 in Hourly Precipitation: - Heat Index: 97 °F Graphs

Location: Gedern Village, Columbia, IL

Updated: 6:07 PM CDT

Temperature: 82.6 °F Dew Point: 68 °F Humidity: 61% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Deerpath Acres Court, Saint Louis, MO

Updated: 6:05 PM CDT

Temperature: 87.1 °F Dew Point: 70 °F Humidity: 56% Wind: North at - Pressure: 29.85 in Hourly Precipitation: - Heat Index: 92 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service St Louis MO 
405 PM CDT Mon Jun 29 2015 


Short term: (through late tonight) 
issued at 347 PM CDT Mon Jun 29 2015 


Isolated convection has formed over the last hour in a narrow 
north-south band along the Mississippi River from near Quincy to 
near St Louis. Could be a bit more development over the next 
several hours, and then anticipate that this activity will quickly 
dissipate with loss of heating. 


However, upstream shortwave currently fueling convection over 
eastern Minnesota and NW WI will be dropping south overnight, and this 
may return a low shower/thunderstorm threat to areas along and 
north of I-70 in the midnight-daybreak time frame. 


Truett 


Long term: (tuesday through next monday) 
issued at 347 PM CDT Mon Jun 29 2015 


(tuesday-thursday) 


Weak ripples in the upper level northwest flow will continue a threat of 
showers and a few thunderstorms into the day on Tuesday. Have 
attempted to reflect a bit of a diurnal trend to the pops with 
afternoon heating and instability leading to a bit more of a 
threat/coverage, but this trend may certainly be altered by the 
arrival of the difficult to time shortwaves. At this point i've 
only made modest tweaks to going forecasts, and will likely have to 
save any major adjustments to the Nowcast time frame. 


Unfortunately, it appears that several rounds of convection...and 
more heavy rain...are in the offing as we head into midweek. 12z 
runs are maintaining trends of previous solutions in forecasting a 
slight eastward shift of the upper level trof during this time, 
which willl allow baroclinicity over the plains to work back to 
the east. Deep upward vertical velocity is progged to develop across the forecast area on Tuesday 
night due to strong shortwave in the northwest flow sweeping into the 
mid-Mississippi Valley, with resultant low level warm air advection producing 
strong isentropic ascent over eastward advancing baroclinic zone. 
Resultant strong lift and rapid eastward advection of lower 
tropospheric moisture should cause elevated convection to develop 
during the late evening over western MO and then grow into an mesoscale convective system 
which will then work its way east-southeast late Tuesday night and 
early Wednesday morning. This round of convection should then be 
followed by more storms late Wednesday and Wednesday night as yet 
another shortwave in the northwest flow propagates into the region, with 
both the GFS and NAM suggesting nearly persistent warm air advection/Theta-E 
advection over the southern half of the County Warning Area in this time frame. 
Both the GFS and the NAM are progging precipitable waters  of over 2 inches in 
our area heading into midweek, so storms should be efficient rain- 
makers...again... it does appear that the heaviest rainfall may be 
located over the southwest or southern half of the County Warning Area (avoiding 
the critically water-logged northeast half of the fa), but in 
reality no spot in our County Warning Area needs any more wet weather. Have 
mentioned this heavy rain potential in a hydrologic outlook 
issued earlier this afternoon. 


A chance of thunderstorms will certain carry into Thursday, but it 
does appear that the barrage of shortwaves in the Tuesday night- 
Wednesday night time frame...along with the convection they 
produce...will cause a southward and westward displacement of the 
low level baroclinicity, lessening the heavy rain threat by that time. 


(Friday-monday) 


Medium range solutions maintain ridging over the western Continental U.S. And 
a mean trof over the northeast U.S.,Which places mid-Mississippi 
Valley in The Heart of the northwest flow regime throughout the period. 
With shortwaves rippling through this northwest flow it appears that 
there will be a chance of showers and thunderstorms throughout the 
Friday-Monday time frame. There should be lots of dry time and 
certainly don't see any all-day rains at this point, but for now 
no solution really offers any significant rain-free period. 


Truett 


&& 


Aviation: (for the 18z tafs through 18z Tuesday afternoon) 
issued at 1247 PM CDT Mon Jun 29 2015 


Surface low over central Indiana will continue to weaken and lift 
to the northeast. However will stay in busy northwest flow aloft 
with more shortwaves sliding south into region. Cu has begun to 
lift a bit and scatter out more so cigs for the most part are VFR 
for rest of forecast period. Could see some isolated showers 
develop this afternoon, but coverage is minimal so did not add 
mention to tafs at this time. Otherwise, north winds to back to 
the northwest to west and become light. Then winds to pick back up 
a bit by mid morning on Tuesday from the west. 


Specifics for kstl: 
surface low over central Indiana will continue to weaken and lift 
to the northeast. However will stay in busy northwest flow aloft 
with more shortwaves sliding south into region. Cu has begun to 
lift a bit and scatter out more so cigs for the most part are VFR 
for rest of forecast period. Could see some isolated showers 
develop this afternoon, but coverage is minimal so did not add 
mention to taf at this time. Otherwise, north winds to back to 
the northwest to west and become light by 02z Tuesday. Then winds 
to pick back up a bit by 15z Tuesday from the west. 


Byrd 


&& 


Preliminary point temperatures/pops: 
Saint Louis 68 88 70 80 / 20 30 60 60 
Quincy 66 84 66 79 / 30 30 40 50 
Columbia 66 88 68 80 / 20 20 60 60 
Jefferson City 66 88 69 80 / 20 20 60 60 
Salem 66 84 67 79 / 20 40 40 60 
Farmington 65 87 68 80 / 10 20 50 70 


&& 


Lsx watches/warnings/advisories: 
MO...none. 
Illinois...none. 
&& 


$$ 


Weather forecast office lsx 












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