Alert archive / Missouri / Flash Flood Warnings in 2018
Flash Flood Warning 1, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Feb 24, 2018, 4:23 PM CST for 8 counties in Missouri. It was in force for 6 hr. 5 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
- Feb 24, 2018, 4:23 PM CST (22:23 UTC)
- Expired
- Feb 24, 2018, 10:15 PM CST
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Crawford County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 115 km from the middle of the area, began a volume at 22:26 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 |
|---|---|---|---|
| Feb 24, 6:00 PM CST | FLASH FLOOD | 2 Se Arcadia, MO | HIGHWAY D CLOSED BOTH DIRECTIONS DUE TO FLASH FLOODING. TIME ESTIMATED. |
| Feb 24, 6:00 PM CST | FLASH FLOOD | 3 W Ellington, MO | HIGHWAY F IS CLOSED IN BOTH DIRECTIONS DUE TO FLASH FLOODING. TIME ESTIMATED. |
| Feb 24, 6:00 PM CST | FLASH FLOOD | 3 Wsw Arcadia, MO | HIGHWAY CC CLOSED BOTH DIRECTIONS DUE TO FLASH FLOODING. TIME ESTIMATED. |
| Feb 24, 6:50 PM CST | HEAVY RAIN 3.19 | 7 Sw Steelville, MO | TOTAL IS FROM MIDNIGHT ONWARD. |
| Feb 24, 8:12 PM CST | HEAVY RAIN 2.23 | Cuba, MO | REPORT VIA SOCIAL MEDIA. |
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 12:00Z, 10.4 hours before the alert went out and 271 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 460 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
777
WGUS53 KLSX 242223
FFWLSX
MOC055-093-099-123-179-186-187-221-250415-
/O.NEW.KLSX.FF.W.0001.180224T2223Z-180225T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
423 PM CST SAT FEB 24 2018
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
Crawford County in east central Missouri...
Iron County in southeastern Missouri...
Jefferson County in east central Missouri...
Ste. Genevieve County in southeastern Missouri...
Reynolds County in southeastern Missouri...
Madison County in southeastern Missouri...
Washington County in east central Missouri...
St. Francois County in southeastern Missouri...
* Until 1015 PM CST.
* At 421 PM CST, Doppler radar indicated heavy rain producing
thunderstorms which will cause flash flooding. 1 to 2 inches of
rainfall have fallen since 1 PM and is part of a much larger
rainfall event of up to 5 to 8 inches over the past several days.
Area roads are being closed due to these high rainfall amounts
over the past several days.
* Some locations that will experience flooding include...
Arnold, Farmington, Festus, Eureka, Sullivan, Bonne Terre, De Soto,
Pevely, Desloge, Crystal City, Ste. Genevieve, Fredericktown,
Herculaneum, Cuba, Hillsboro, Byrnes Mill, Potosi, Steelville,
Bourbon and Bismarck.
Additional rainfall amounts of up to a half inch or inch could occur
as the rainfall ends from west to east.
This includes the following highways...
Interstate 44 in Missouri between exits 203 and 218.
Interstate 55 in Missouri between exits 141 and 187.
This also includes Washington State Park, St. Joe State Park, St.
Francois State Park, Onondaga Cave State Park, Johnsons Shut-Ins
State Park, Hawn State Park, Fort Davidson Historic Site, Felix Valle
House State Park, Elephant Rocks State Park, Mastodon Historic Site,
Dillard Mill Historic Site, Taum Sauk Mountain State Park, Sandy
Creek Covered Bridge Historic Site, Missouri Mines Historic Site,
Gov. Dunklin's Grave Historic Site, and Clearwater Lake Recreational
Area.
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.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3705 9096 3726 9116 3750 9121 3751 9131
3759 9131 3759 9116 3770 9116 3770 9131
3779 9131 3779 9153 3821 9153 3820 9078
3848 9073 3850 9041 3819 9034 3796 8992
3764 9015 3731 9014 3727 9074 3705 9078
$$
TESThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 12:49 AM CST | River Flood Warning | LSX | Osage | 49 hr |
| Feb 24, 3:53 AM CST | Areal Flood Advisory | LSX | Crawford, Franklin, Gasconade, Osage, Washington | 6 hr |
| Feb 24, 4:56 AM CST | Areal Flood Advisory | LSX | Jefferson, Saint Charles, Saint Louis, Warren, City of Saint Louis | 4 hr |
| Feb 24, 7:42 AM CST | River Flood Warning | LSX | Jefferson | 3 days |
| Feb 24, 7:42 AM CST | River Flood Warning | LSX | Crawford | 68 hr |
| Feb 24, 7:42 AM CST | River Flood Warning | LSX | Crawford, Washington | 3 days |
| Feb 24, 9:03 AM CST | River Flood Warning | LSX | Reynolds | 64 hr |
Nearby
Flash Flood Warnings in Missouri, 2018Every flash flood warning in 2018
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.