Alert archive / Missouri / Flash Flood Warnings in 2026
Flash Flood Warning 2, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Mar 7, 2026, 4:08 AM CST for 4 counties in Missouri. It was in force for 5 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 7, 2026, 4:08 AM CST (10:08 UTC)
- Expired
- Mar 7, 2026, 9:00 AM CST
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Crawford County, MO, Iron County, MO, Reynolds County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 116 km from the middle of the area, began a volume at 10:10 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 7, 5:00 AM CST | RAIN 1.76 | 4 Sw Potosi, MO | |
| Mar 7, 7:00 AM CST | RAIN 2.6 | Viburnum, MO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 10.1 hours before the alert went out and 255 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.
- Mixed-layer CAPE
- 469 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1415 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 245 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.8
The text
As transmitted.
454
WGUS53 KLSX 071008
FFWLSX
MOC055-093-179-221-071500-
/O.NEW.KLSX.FF.W.0002.260307T1008Z-260307T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
408 AM CST Sat Mar 7 2026
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
Southeastern Crawford County in east central Missouri...
Southern Washington County in east central Missouri...
Northern Iron County in southeastern Missouri...
North Central Reynolds County in southeastern Missouri...
* Until 900 AM CST.
* At 408 AM CST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts around 1 to two inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
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...
Potosi, Pilot Knob, Viburnum, Irondale, Courtois, Bixby, Belleview,
Caledonia, Belgrade, Davisville, Dillard and Granite.
This includes the following State Parks...
Elephant Rocks State Park and Dillard Mill Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3771 9131 3779 9131 3779 9133 3788 9111
3795 9065 3762 9065 3759 9078 3758 9116
3759 9116 3765 9115 3770 9115 3770 9122
FLASH FLOOD...RADAR INDICATED
$$
Carney1 follow-up statement
128
WGUS73 KLSX 071500
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
900 AM CST Sat Mar 7 2026
MOC055-093-179-221-071510-
/O.EXP.KLSX.FF.W.0002.000000T0000Z-260307T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Crawford MO-Iron MO-Reynolds MO-Washington MO-
900 AM CST Sat Mar 7 2026
...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHEASTERN CRAWFORD AND
SOUTHERN WASHINGTON COUNTIES IN EAST CENTRAL MISSOURI AND NORTHERN
IRON AND NORTH CENTRAL REYNOLDS COUNTIES IN SOUTHEASTERN MISSOURI...
The heavy rain has ended. A Flood Advisory is now in effect until
noon, small stream and urban flooding is possible with additional
rainfall. Please continue to heed remaining road closures.
&&
LAT...LON 3771 9131 3779 9131 3779 9133 3788 9111
3795 9065 3762 9065 3759 9078 3758 9116
3759 9116 3765 9115 3770 9115 3770 9122
$$
DeliaThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 6:27 PM CST | River Flood Warning | LSX | Jefferson, Saint Louis | 5 days |
| Mar 6, 6:27 PM CST | River Flood Warning | LSX | Jefferson, Saint Louis | 5 days |
| Mar 6, 10:25 PM CST | Severe Thunderstorm Warning | LSX | Boone, Cole, Moniteau | 31 min |
| Mar 7, 2:31 AM CST | Severe Thunderstorm Warning | LSX | Boone, Callaway | 19 min |
| Mar 7, 3:06 AM CST | Areal Flood Advisory | LSX | Crawford, Iron, Reynolds, Washington | 62 min |
| Mar 7, 4:50 AM CST | Severe Thunderstorm Warning | LSX | Iron, Madison | 40 min |
| Mar 7, 5:05 AM CST | Areal Flood Advisory | LSX | Sainte Genevieve, Saint Francois | 7 hr |
| Mar 7, 8:59 AM CST | Areal Flood Advisory | LSX | Crawford, Iron, Reynolds, Washington | 3 hr |
| Mar 7, 10:38 AM CST | River Flood Warning | LSX | Franklin, Jefferson | 30 hr |
| Mar 7, 10:50 AM CST | River Flood Warning | LSX | Jefferson, Saint Louis | 3 days |
| Mar 7, 11:43 AM CST | River Flood Warning | LSX | Reynolds | 27 hr |
| Mar 7, 11:45 AM CST | River Flood Warning | LSX | Crawford | 33 hr |
Nearby
Flash Flood Warnings in Missouri, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.