Hazardous Weather Outlook for O'Fallon, Illinois
Hazardous Weather Outlook
National Weather Service St Louis MO
248 PM CDT Wed May 1 2024
ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-022000-
Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL-
Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison IL-Saint Clair IL-Monroe IL-Knox MO-
Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO-Boone MO-
Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO-
Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-
Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-
Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-
Madison MO-Reynolds MO-
248 PM CDT Wed May 1 2024
This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.
.DAY ONE...Tonight.
There is a chance of thunderstorms tonight in portions of the area.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
There is a chance of thunderstorms at times Thursday through
Tuesday. An isolated strong to severe thunderstorm is possible
Thursday afternoon and evening in central and eastern Missouri and
west- central Illinois with damaging winds and marginally severe
hail.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
Flood Warning for O'Fallon, Illinois
Flood Statement
National Weather Service St Louis MO
1220 PM CDT Wed May 1 2024
...The Flood Warning is extended for the following rivers in
Illinois...Missouri...
Mississippi River at St. Louis.
Mississippi River at Chester.
Mississippi River near Herculaneum.
River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
This product, along with additional weather and stream information,
is available at https://water.weather.gov/ahps2/index.php?wfo=lsx.
The next statement will be issued late Thursday night at 1230 AM CDT.
ILC163-MOC189-510-030530-
/O.EXT.KLSX.FL.W.0045.000000T0000Z-240505T0600Z/
/EADM7.1.ER.240503T1200Z.240503T1200Z.240504T0000Z.NO/
1220 PM CDT Wed May 1 2024
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SUNDAY MORNING...
* WHAT...Minor flooding is forecast.
* WHERE...Mississippi River at St. Louis.
* WHEN...Until early Sunday morning.
* IMPACTS...At 30.0 feet, Floodwall at Lacledes Landing is closed.
Also at this level, the U.S. Coast Guard may prohibit all
recreational vessel traffic from just above the Chain of Rocks
Canal south entry to just below the mouth of the Meramec River.
* ADDITIONAL DETAILS...
- At 12:00 PM CDT Wednesday the stage was 29.2 feet.
- Forecast...The river will fall to 28.8 feet this afternoon.
It will then rise to flood stage Friday morning. It will fall
to 29.9 feet early Friday afternoon. It will then rise to
flood stage Friday evening. It will fall for the remainder of
the period.
- Flood stage is 30.0 feet.
Fld Observed Forecasts (7:00 am)
Location Stg Stage Thu Fri Sat Sun Mon
Mississippi River
St. Louis 30.0 29.2 29.4 30.0 29.4 26.3 23.3
LAT...LON 3881 9017 3883 9004 3826 9030 3826 9043
3873 9024