Alert archive / Missouri / Flash Flood Watches in 2024

Flash Flood Watch 1, NWS St. Louis, MO

November 4, 2024Saint Francois County, Missouri

NWS St. Louis, MO issued this flash flood watch at Nov 4, 2024, 4:38 PM CST for Saint Francois County, Missouri. It was in force for 19 hr.

The area

The counties it named.

The facts

Issued: Nov 4, 2024, 4:38 PM CST (22:38 UTC)
Expired: Nov 5, 2024, 12:00 PM CST
In force: 19 hr
Issued by: NWS St. Louis, MO
Flood severity: None

County Saint Francois County, MO

The radar

The St Louis radar (KLSX), 101 km from the middle of the area, began a volume at 22:39 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.6 hours before the alert went out and 306 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash 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 flash flood watch went out at Nov 4, 3:31 PM CST, 1 hour 7 minutes earlier.

Area forecast discussion, Nov 4, 3:31 PM CST, 1 hour 7 minutes before

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Hazardous weather outlook, Nov 4, 1:54 PM CST, 2 hours 44 minutes before

Hazardous Weather Outlook
National Weather Service St Louis MO
154 PM CST Mon Nov 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>075-084-085-099-052000-
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-
154 PM CST Mon Nov 4 2024

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

.DAY ONE...This afternoon and tonight.

Thunderstorms are expected through tonight. Some could be severe,
mainly in central Missouri this evening. The primary threats are
damaging winds and a few tornadoes, along with locally heavy
rainfall.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Thunderstorms will end on Tuesday morning. Otherwise no hazardous
weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotters activation will be likely tonight.

Britt

In the hours before

Local storm report, Nov 4, 12:45 PM CST, 3 hours 53 minutes before

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Local storm report, Nov 4, 3:55 PM CST, 43 minutes before

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Local storm report, Nov 4, 4:01 PM CST, 37 minutes before

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Local storm report, Nov 4, 4:09 PM CST, 29 minutes before

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Local storm report, Nov 4, 4:20 PM CST, 18 minutes before

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Local storm report, Nov 4, 4:33 PM CST, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 4, 7:36 AM CST	Flash Flood Warning	LSX	Iron, Reynolds	5 hr
Nov 4, 8:27 AM CST	River Flood Warning	LSX	Jefferson	5 days
Nov 4, 8:30 AM CST	River Flood Warning	LSX	Reynolds	3 days
Nov 4, 8:41 AM CST	Areal Flood Advisory	LSX	Jefferson, Madison, Sainte Genevieve, Saint Francois, Washington	50 min
Nov 4, 9:31 AM CST	Flash Flood Warning	LSX	Jefferson, Madison, Sainte Genevieve, Saint Francois, Washington	7 hr
Nov 4, 12:27 PM CST	Flash Flood Warning	LSX	Iron, Madison, Reynolds, Saint Francois, Washington	3 hr
Nov 4, 3:11 PM CST	Areal Flood Advisory	LSX	Iron, Reynolds	6 hr
Nov 4, 4:26 PM CST	Areal Flood Advisory	LSX	Jefferson, Madison, Sainte Genevieve, Saint Francois, Washington	4 hr
Nov 4, 10:30 AM CST	Areal Flood Advisory	LSX	Washington	6 hr
Nov 4, 11:44 AM CST	Areal Flood Advisory	LSX	Monroe, Randolph	7 hr
Nov 4, 1:42 PM CST	Areal Flood Advisory	LSX	Clinton, Marion, Saint Clair, Washington	6 hr

Nearby

Flash Flood Watches in Missouri, 2024 Every flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.