Alert archive / Missouri / Flash Flood Warnings in 2018
Flash Flood Warning 39, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Sep 7, 2018, 6:33 PM CDT for Crawford County, Missouri. It was in force for 6 hr. 1 report 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
- Sep 7, 2018, 6:33 PM CDT (23:33 UTC)
- Expired
- Sep 8, 2018, 12:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Crawford County, MO
The radar
The St Louis radar (KLSX), 101 km from the middle of the area, began a volume at 23:37 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 |
|---|---|---|---|
| Sep 7, 7:30 PM CDT | HEAVY RAIN 0.99 | Cuba, 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 12:00Z, 11.6 hours before the alert went out and 246 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
- 619 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 484 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
108 WGUS53 KLSX 072333 FFWLSX MOC055-080530- /O.NEW.KLSX.FF.W.0039.180907T2333Z-180908T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service St Louis MO 633 PM CDT FRI SEP 7 2018 The National Weather Service in St Louis has issued a * Flash Flood Warning for... Crawford County in east central Missouri... * Until 1230 AM CDT. * At 633 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to three inches of rain have already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Sullivan, Cuba, Steelville, Bourbon, Leasburg, Cherryville, St. Cloud, Cook Station, Davisville, Oak Hill and Rosati. This includes Interstate 44 in Missouri between exits 203 and 218. This also includes Onondaga Cave State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3779 9153 3821 9153 3820 9110 3779 9110 $$ Tilly
1 follow-up statement
896 WGUS73 KLSX 080528 FFSLSX Flash Flood Statement National Weather Service St Louis MO 1228 AM CDT SAT SEP 8 2018 MOC055-080535- /O.EXP.KLSX.FF.W.0039.000000T0000Z-180908T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Crawford MO- 1228 AM CDT SAT SEP 8 2018 ...THE FLASH FLOOD WARNING FOR CRAWFORD COUNTY WILL EXPIRE AT 1230 AM CDT... Heavier rain that impacted this location earlier this evening has moved out of the warned area. Coordination with Central Dispatch revealed no additional flooding has been reported. Rainfall will continue to impact the area tonight. Please continue to heed any remaining road closures and report flooding to local authorities. LAT...LON 3779 9153 3821 9153 3820 9110 3779 9110 $$ Maples
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 9:01 PM CDT | River Flood Warning | LSX | Marion | 4 days |
| Sep 6, 10:20 PM CDT | River Flood Warning | LSX | Lewis | 6 days |
| Sep 7, 5:10 AM CDT | River Flood Warning | LSX | Lewis | 4 days |
| Sep 7, 10:12 AM CDT | Areal Flood Advisory | LSX | Lewis | 3 hr |
| Sep 7, 6:01 PM CDT | River Flood Warning | LSX | Marion | 30 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.