St. Louis, MO Weather Alerts

Flood Warning issued July 11 at 11:23AM CDT until July 13 at 9:34AM CDT

Alert Icon Weather Alerts

...The Flood Warning is extended for the following rivers in
Illinois...Missouri...

Mississippi River at St. Louis.

...The Flood Warning continues for the following rivers in
Illinois...Missouri...

Mississippi River at Alton.

Mississippi River near Herculaneum.

Mississippi River at Mel Price LD.

Mississippi River at Grafton.

Mississippi River at Chester.

Mississippi River at Lock & Dam 21.

Mississippi River at Quincy.

Mississippi River at LaGrange.

Mississippi River at Canton.

Mississippi River at Winfield.

Mississippi River at Saverton.

Mississippi River at Hannibal.

Mississippi River at Louisiana.

Mississippi River at Clarksville.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Mississippi River at St. Louis.

* WHEN...Until late Saturday morning.

* IMPACTS...At 31.9 feet, The entrance to the parking garage just
north of Eads bridge begins flooding.

* ADDITIONAL DETAILS...
- At 11:00 AM CDT Thursday the stage was 31.5 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 11:00 AM CDT Thursday was 32.1 feet.
- Forecast...The river is expected to fall below flood stage
late tonight and continue falling to 23.3 feet Thursday, July
18.
- Flood stage is 30.0 feet.

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2 days ago

Air Quality Alert issued July 11 at 3:38PM CDT

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The St. Louis Clean Air Partnership has issued an air quality alert
for the St. Louis metropolitan area from 10 AM to 8 PM CDT Friday.

An Orange air quality forecast means that maximum ozone
concentrations are expected to reach levels that pose a health risk.
Adverse health effects increase as air quality deteriorates. Ground-
level ozone is an air contaminant which can cause breathing
difficulties for children, older adults, as well as persons with
respiratory problems.

Reducing outdoor physical activity is recommended. If it is a
regularly scheduled work day you are urged to consider
telecommuting, carpooling, or utilizing public transit. Avoid
excessive idling and do not top off when refueling motor vehicles.
The use of gasoline-powered lawn equipment should be reduced or
postponed until late in the day.

For more information visit the St. Louis Clean Air Partnership at
http://cleanair-stlouis.com/

For current Air Quality Index (AQI) values visit
https://www.airnow.gov/

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2 days ago

Flood Warning issued July 10 at 9:31PM CDT until July 13 at 9:24AM CDT

Alert Icon Weather Alerts

...The Flood Warning is extended for the following rivers in
Missouri...Illinois...

Mississippi River at St. Louis.

Mississippi River at Alton.

Mississippi River near Herculaneum.

...The Flood Warning continues for the following rivers in
Missouri...Illinois...

Mississippi River at Mel Price LD.

Mississippi River at Grafton.

Mississippi River at Chester.

Mississippi River at Lock & Dam 21.

Mississippi River at Quincy.

Mississippi River at LaGrange.

Mississippi River at Canton.

Mississippi River at Winfield.

Mississippi River at Saverton.

Mississippi River at Hannibal.

Mississippi River at Louisiana.

Mississippi River at Clarksville.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Mississippi River at St. Louis.

* WHEN...Until late Saturday morning.

* IMPACTS...At 31.9 feet, The entrance to the parking garage just
north of Eads bridge begins flooding.

* ADDITIONAL DETAILS...
- At 9:00 PM CDT Wednesday the stage was 31.9 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:00 PM CDT Wednesday was 32.3 feet.
- Forecast...The river is expected to fall below flood stage
early Friday morning and continue falling to 23.3 feet
Wednesday, July 17.
- Flood stage is 30.0 feet.

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3 days ago

Severe Thunderstorm Watch issued June 13 at 9:24PM CDT until June 14 at 1:00AM CDT

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SEVERE THUNDERSTORM WATCH 412 REMAINS VALID UNTIL 1 AM CDT FRIDAY
FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 6 COUNTIES

IN SOUTH CENTRAL ILLINOIS

MONTGOMERY

IN SOUTHWEST ILLINOIS

CALHOUN GREENE JERSEY
MACOUPIN MADISON

IN MISSOURI THIS WATCH INCLUDES 15 COUNTIES

IN CENTRAL MISSOURI

AUDRAIN BOONE CALLAWAY
COLE MONITEAU OSAGE

IN EAST CENTRAL MISSOURI

FRANKLIN GASCONADE LINCOLN
MONTGOMERY SAINT CHARLES SAINT LOUIS
SAINT LOUIS CITY WARREN

IN NORTHEAST MISSOURI

PIKE

THIS INCLUDES THE CITIES OF ALTON, BOWLING GREEN, COLUMBIA,
EDWARDSVILLE, FULTON, JEFFERSON CITY, LITCHFIELD, MEXICO,
SAINT CHARLES, SAINT LOUIS, SULLIVAN, UNION, AND WASHINGTON.

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1months ago

Flash Flood Warning issued April 2 at 4:36AM CDT until April 2 at 6:45AM CDT

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At 436 AM CDT, the public reported thunderstorms producing heavy
rain across the warned area. Between 1.5 and 3 inches of rain have
fallen. Additional rainfall amounts up to 0.5 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Public reported.

IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.

Some locations that will experience flash flooding include...
St. Louis, Belleville, Granite City, O'Fallon, Alton, East St.
Louis, Collinsville, Edwardsville, Webster Groves, Godfrey,
Fairview Heights, Cahokia, Jennings, Swansea, Glen Carbon, Shiloh,
Crestwood, Bellefontaine Neighbors, Wood River and Highland.

This includes the following State Parks...
Scott Joplin Historic Site and Horseshoe Lake State Park.

This includes the following highways...
Interstate 64 in Illinois between exits 9 and 27.
Interstate 55 in Illinois between exits 23 and 30.
Interstate 70 in Illinois between exits 21 and 24.

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3months ago

Wind Chill Advisory issued January 15 at 2:38PM CST until January 16 at 12:00PM CST

Alert Icon Weather Alerts

* WHAT...Very cold wind chills. Wind chills as low as 20 below zero.

* WHERE...Portions of south central and southwest Illinois and east
central and southeast Missouri.

* WHEN...Until noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as little as 30 minutes.

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5months ago

Wind Chill Warning issued January 13 at 2:02PM CST until January 14 at 12:00PM CST

Alert Icon Weather Alerts

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
expected. Wind chills as low as 30 below zero. For the Wind Chill
Advisory, very cold wind chills expected. Wind chills as low as 20
below zero.

* WHERE...Portions of south central and southwest Illinois and east
central Missouri.

* WHEN...For the Wind Chill Warning, from 6 PM this evening to noon
CST Sunday. For the Wind Chill Advisory, from noon Sunday to noon
CST Tuesday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as little as 30 minutes.

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6months ago

Wind Chill Advisory issued January 13 at 2:02PM CST until January 16 at 12:00PM CST

Alert Icon Weather Alerts

* WHAT...For the Wind Chill Warning, dangerously cold wind chills
expected. Wind chills as low as 30 below zero. For the Wind Chill
Advisory, very cold wind chills expected. Wind chills as low as 20
below zero.

* WHERE...Portions of south central and southwest Illinois and east
central Missouri.

* WHEN...For the Wind Chill Warning, from 6 PM this evening to noon
CST Sunday. For the Wind Chill Advisory, from noon Sunday to noon
CST Tuesday.

* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as little as 30 minutes.

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6months ago

Excessive Heat Watch issued August 18 at 2:51AM CDT until August 23 at 10:00PM CDT

Alert Icon Weather Alerts

* WHAT...Dangerously hot conditions with heat index values up to 111
possible.

* WHERE...Portions of south central, southwest, and west central
Illinois. Portions of central, east central, northeast, and
southeast Missouri.

* WHEN...From Sunday afternoon through Wednesday evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.

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10months ago

The Excessive Heat Watch has been replaced. Please see the latest information from NWS St Louis MO on this developing situation.

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The Excessive Heat Watch has been replaced. Please see the latest information from NWS St Louis MO on this developing situation.

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10months ago