Alert archive / Minnesota / Flash Flood Warnings in 2016
Flash Flood Warning 34, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Sep 22, 2016, 6:31 AM CDT for Cottonwood County, Minnesota. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 22, 2016, 6:31 AM CDT (11:31 UTC)
- Expired
- Sep 22, 2016, 9:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
County Cottonwood County, MN
The radar
The Minneapolis radar (KMPX), 143 km from the middle of the area, began a volume at 11:30 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
Minneapolis, MN (KMPX), launched 00:00Z, 11.5 hours before the alert went out and 140 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
- 144 J/kg
- Mixed-layer CIN
- -361 J/kg
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 428 m²/s²
- 0-3 km storm-relative helicity
- 596 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 11.6
The text
As transmitted.
261 WGUS53 KFSD 221131 FFWFSD MNC033-221430- /O.NEW.KFSD.FF.W.0034.160922T1131Z-160922T1430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 631 AM CDT THU SEP 22 2016 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL COTTONWOOD COUNTY IN SOUTHWESTERN MINNESOTA... * UNTIL 930 AM CDT * AT 629 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. RADAR ESTIMATES FROM 2 TO 3 INCHES OF RAINFALL HAS OCCURRED...WITH POTENTIAL FOR ANOTHER INCH OR TWO THROUGH 8 AM. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... COMFREY. AREAS NEAR HIGHWAY 30 EAST OF JEFFERS TO THE COUNTY LINE. 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 4400 9486 4403 9516 4411 9511 4411 9486 $$ CHAPMAN
2 follow-up statements
341 WGUS73 KFSD 221307 FFSFSD FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 807 AM CDT THU SEP 22 2016 MNC033-221430- /O.CON.KFSD.FF.W.0034.000000T0000Z-160922T1430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COTTONWOOD MN- 807 AM CDT THU SEP 22 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR EAST CENTRAL COTTONWOOD COUNTY... AT 806 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. THREE TO FIVE INCHES OF RAIN HAVE ALREADY FALLEN. ADDITIONAL RAINFALL AMOUNTS OF UP TO AN INCH ARE POSSIBLE IN THE WARNED AREA THROUGH 9 AM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU CAN DO SO SAFELY. && LAT...LON 4400 9486 4403 9516 4411 9511 4411 9486 $$ GILLISPIE
886 WGUS73 KFSD 221427 FFSFSD FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 927 AM CDT THU SEP 22 2016 MNC033-221436- /O.EXP.KFSD.FF.W.0034.000000T0000Z-160922T1430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COTTONWOOD MN- 927 AM CDT THU SEP 22 2016 ...THE FLASH FLOOD WARNING FOR EAST CENTRAL COTTONWOOD COUNTY WILL EXPIRE AT 930 AM CDT... THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. LIGHT RAIN WILL CONTINUE OFF AND ON THROUGH THE DAY. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. LAT...LON 4400 9486 4403 9516 4411 9511 4411 9486 $$ GILLISPIE
Nearby
Flash Flood Warnings in Minnesota, 2016Every flash flood warning in 2016
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.