Alert archive / Missouri / River Flood Warnings in 2024

River Flood Warning 120, NWS St. Louis, MO

July 4, 2024Jefferson County, Saint Louis County, Missouri

NWS St. Louis, MO issued this river flood warning at Jul 4, 2024, 9:40 PM CDT for Jefferson County, Saint Louis County, Missouri. It took effect at Jul 6, 2024, 7:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued
Jul 4, 2024, 9:40 PM CDT (02:40 UTC)
In effect from
Jul 6, 2024, 7:00 PM CDT
Expired
Jul 5, 2024, 9:38 PM CDT
In force
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
Minor

Counties Jefferson County, MO, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 32 km from the middle of the area, began a volume at 02:41 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.

The river

Written for the forecast point Meramec River at Fenton (FNNM7). The gauge peaked at 20.29 ft at Jul 5, 2024, 11:00 PM CDT.

actionminormoderate1520253007/0507/0607/07
Action stage
21 ft
Minor stage
23 ft
Moderate stage
29 ft
Major stage
32 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 07019210, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning 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 river flood warning went out at Jul 4, 6:09 PM CDT, 3 hours 31 minutes earlier.

Area forecast discussion, Jul 4, 6:09 PM CDT, 3 hours 31 minutes before
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Hazardous weather outlook, Jul 4, 7:35 PM CDT, 2 hours 5 minutes before
Hazardous Weather Outlook
National Weather Service St Louis MO
735 PM CDT Thu Jul 4 2024

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-060045-
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-
735 PM CDT Thu Jul 4 2024

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

.DAY ONE...Tonight.

Thunderstorms are likely late this evening and overnight across
portions of the area. A few thunderstorms may be strong to severe
with isolated damaging winds, large hail, and heavy rainfall that
could lead to isolated flash flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a chance of thunderstorms Sunday through Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

19

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 1:01 AM CDTAreal Flood AdvisoryLSXReynolds3 hr
Jul 5, 1:22 AM CDTAreal Flood AdvisoryLSXIron2 hr
Jul 5, 1:47 AM CDTAreal Flood AdvisoryLSXCrawford3 hr
Jul 5, 1:52 AM CDTAreal Flood AdvisoryLSXFranklin3 hr
Jul 5, 2:13 AM CDTAreal Flood AdvisoryLSXJefferson2 hr
Jul 5, 2:27 AM CDTFlash Flood WarningLSXFranklin3 hr
Jul 5, 2:36 AM CDTAreal Flood AdvisoryLSXSaint Louis118 min
Jul 5, 2:38 AM CDTAreal Flood AdvisoryLSXCity of Saint Louis116 min
Jul 5, 9:31 AM CDTRiver Flood WarningLSXMonroe12 hr
Jul 5, 3:13 AM CDTAreal Flood AdvisoryLSXMadison, Saint Clair82 min

Nearby

River Flood Warnings in Missouri, 2024Every river flood warning 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; the gauge from the NWS water service and the USGS.