Alert archive / Minnesota / Flash Flood Warnings in 2011
Flash Flood Warning 21, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jul 1, 2011, 3:41 PM CDT for Lincoln County, Pipestone County, Minnesota; Brookings County, Moody County, South Dakota. It was in force for 100 min. 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
- Jul 1, 2011, 3:41 PM CDT (20:41 UTC)
- Expired
- Jul 1, 2011, 5:21 PM CDT
- In force
- 100 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lincoln County, MN, Pipestone County, MN, Brookings County, SD, Moody County, SD
The radar
The Sioux Falls radar (KFSD), 72 km from the middle of the area, began a volume at 20:44 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 |
|---|---|---|---|
| Jul 1, 4:00 PM CDT | FLASH FLOOD | Brookings, SD | EXTENSIVE FLASH FLOODING IN STREETS, DITCHES AND YARDS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 8.7 hours before the alert went out and 178 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
- 407 J/kg
- Mixed-layer CIN
- -374 J/kg
- Mixed-layer LCL
- 983 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- -270 m²/s²
- 0-3 km storm-relative helicity
- -229 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
012 WGUS53 KFSD 012041 FFWFSD MNC081-117-SDC011-101-012330- /O.NEW.KFSD.FF.W.0021.110701T2041Z-110701T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 341 PM CDT FRI JUL 1 2011 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * FLASH FLOOD WARNING FOR... LINCOLN COUNTY IN SOUTHWEST MINNESOTA NORTHERN MOODY COUNTY IN EAST CENTRAL SOUTH DAKOTA NORTHERN PIPESTONE COUNTY IN SOUTHWEST MINNESOTA SOUTHERN BROOKINGS COUNTY IN EAST CENTRAL SOUTH DAKOTA * UNTIL 630 PM CDT * AT 340 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. A QUICK TWO TO FOUR INCHES OF RAINFALL IS EXPECTED WITH THIS COMPLEX OF THUNDERSTORMS. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... BROOKINGS...ARCO...AURORA...EGAN...ELKTON...FLANDREAU...HOLLAND... IVANHOE...LAKE BENTON...PIPESTONE NATIONAL MONUMENT...RUTHTON... TYLER...VOLGA AND WARD. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. && LAT...LON 4404 9606 4396 9678 4435 9696 4454 9609 $$ WEISSER
1 follow-up statement
943 WGUS73 KFSD 012221 FFSFSD FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 521 PM CDT FRI JUL 1 2011 MNC081-117-SDC011-101-012236- /O.CAN.KFSD.FF.W.0021.000000T0000Z-110701T2330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LINCOLN MN-PIPESTONE MN-MOODY SD-BROOKINGS SD- 521 PM CDT FRI JUL 1 2011 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN BROOKINGS...NORTHERN MOODY...NORTHERN PIPESTONE AND LINCOLN COUNTIES IS CANCELLED... EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED... PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. LAT...LON 4404 9606 4396 9678 4435 9696 4454 9609 $$ WEISSER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 3:13 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Pipestone | 62 min |
| Jul 1, 3:31 PM CDT | Tornado Warning | FSD | Lincoln, Pipestone | 29 min |
| Jul 1, 3:51 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon, Murray | 39 min |
| Jul 1, 3:53 PM CDT | Tornado Warning | FSD | Lincoln | 21 min |
| Jul 1, 4:02 PM CDT | Flash Flood Warning | FSD | Lyon, Murray | 3 hr |
| Jul 1, 4:13 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 32 min |
| Jul 1, 5:05 PM CDT | Severe Thunderstorm Warning | FSD | Murray, Nobles, Pipestone, Rock | 25 min |
| Jul 1, 5:44 PM CDT | Severe Thunderstorm Warning | FSD | Cottonwood, Jackson, Murray, Nobles | 46 min |
| Jul 1, 6:27 PM CDT | Severe Thunderstorm Warning | FSD | Cottonwood | 16 min |
| Jun 30, 10:07 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 38 min |
| Jun 30, 10:47 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 43 min |
| Jun 30, 11:38 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Gregory | 37 min |
| Jul 1, 12:10 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 35 min |
| Jul 1, 12:40 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 35 min |
| Jul 1, 1:11 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 49 min |
| Jul 1, 2:14 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner | 46 min |
| Jul 1, 2:18 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, McCook, Turner | 42 min |
| Jul 1, 2:42 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Minnehaha, Moody | 63 min |
| Jul 1, 3:18 PM CDT | Tornado Warning | FSD | Moody | 27 min |
Nearby
Flash Flood Warnings in Minnesota, 2011Flash Flood Warnings in South Dakota, 2011Every flash flood warning in 2011
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.