Alert archive / Missouri / Flood Watches in 2024

Flood Watch 4, NWS St. Louis, MO

May 25, 202425 counties in Missouri; 15 counties in Illinois

NWS St. Louis, MO issued this flood watch at May 25, 2024, 2:06 PM CDT for 25 counties in Missouri; 15 counties in Illinois. It took effect at May 26, 2024, 1:00 AM CDT. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: May 25, 2024, 2:06 PM CDT (19:06 UTC)
In effect from: May 26, 2024, 1:00 AM CDT
Expired: May 26, 2024, 9:52 PM CDT
In force: 21 hr
Issued by: NWS St. Louis, MO
Flood severity: None

All 40 counties

Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Pike County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 6 km from the middle of the area, began a volume at 19:07 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before this flood watch went out at May 25, 12:37 PM CDT, 1 hour 29 minutes earlier.

Area forecast discussion, May 25, 12:37 PM CDT, 1 hour 29 minutes before

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Hazardous weather outlook, May 25, 3:13 AM CDT, 10 hours 53 minutes before

Hazardous Weather Outlook
National Weather Service St Louis MO
313 AM CDT Sat May 25 2024

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-260815-
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-
313 AM CDT Sat May 25 2024

This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Today and tonight.

There is a chance for thunderstorms late tonight across portions of
central and northeast Missouri, moving east with time. A few may be
strong to severe.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is a chance for thunderstorms during the morning Sunday and
again Sunday afternoon and evening across the area. A few
thunderstorms may be strong to severe during the morning. A few
thunderstorms may become severe late Saturday night into Sunday
morning and possibly again during the afternoon/evening, with
damaging winds, large hail, a tornado, and flash flooding all
possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MRM

In the hours before

Local storm report, May 25, 9:13 AM CDT, 4 hours 53 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
913 AM CDT Sat May 25 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     Rain             1 NE Benld              39.11N 89.78W
05/25/2024  M3.71 Inch       Macoupin           IL   Cocorahs

&&

MAB

Local storm report, May 25, 9:15 AM CDT, 4 hours 51 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
915 AM CDT Sat May 25 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     Rain             4 WNW Wenonah           39.35N 89.35W
05/25/2024  M0.94 Inch       Montgomery         IL   Cocorahs

&&

MAB

Local storm report, May 25, 9:16 AM CDT, 4 hours 50 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
916 AM CDT Sat May 25 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     Rain             3 WNW Nutwood           39.10N 90.62W
05/25/2024  M1.67 Inch       Calhoun            IL   Cocorahs

&&

MAB

Local storm report, May 25, 9:17 AM CDT, 4 hours 49 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
917 AM CDT Sat May 25 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     Rain             1 NW Linn               38.49N 91.85W
05/25/2024  M1.82 Inch       Osage              MO   Cocorahs

&&

MAB

Local storm report, May 25, 9:18 AM CDT, 4 hours 48 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
918 AM CDT Sat May 25 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0625 AM     Rain             Hannibal                39.71N 91.38W
05/25/2024  M1.40 Inch       Marion             MO   Cocorahs

&&

MAB

Local storm report, May 25, 10:17 AM CDT, 3 hours 49 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
1017 AM CDT Sat May 25 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     Rain             3 NNE Bellflower        39.04N 91.34W
05/24/2024  M1.50 Inch       Montgomery         MO   Trained Spotter

            Measured 1.5 inches of rain, storm total.
            Most of it fell within 30 min. Nearby gravel
            road washed out.

&&

AE

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 8:25 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	50 min
May 24, 8:52 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson	38 min
May 24, 9:26 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	49 min
May 24, 10:03 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	19 min
May 24, 10:10 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve	50 min
May 24, 10:14 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Iron, Saint Francois, Washington	46 min
May 24, 10:59 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	31 min
May 24, 11:23 PM CDT	Tornado Warning	LSX	Iron	37 min
May 24, 11:29 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison, Reynolds	46 min
May 25, 12:09 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison	51 min
May 25, 12:32 AM CDT	Areal Flood Advisory	LSX	Iron, Madison, Reynolds	58 min
May 25, 10:55 AM CDT	River Flood Warning	LSX	Lincoln	21 days
May 24, 9:30 PM CDT	River Flood Warning	LSX	Calhoun, Greene, Jersey	7 days
May 24, 9:51 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	25 min

Nearby

Flood Watches in Missouri, 2024 Flood Watches in Illinois, 2024 Every flood watch in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.