Alert archive / Minnesota / Flash Flood Warnings in 2011
Flash Flood Warning 3, NWS Grand Forks, ND
NWS Grand Forks, ND issued this flash flood warning at May 30, 2011, 10:12 PM CDT for Grant County, Minnesota. It took effect at May 30, 2011, 10:17 PM CDT. It was in force for 8 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
- May 30, 2011, 10:12 PM CDT (03:12 UTC)
- In effect from
- May 30, 2011, 10:17 PM CDT
- Expired
- May 31, 2011, 6:45 AM CDT
- In force
- 8 hr
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Flood severity
- None
County Grant County, MN
The radar
The Aberdeen radar (KABR), 196 km from the middle of the area, began a volume at 03:11 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
Aberdeen, SD (KABR), launched 00:00Z, 3.2 hours before the alert went out and 222 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
- 1125 J/kg
- Mixed-layer CIN
- -258 J/kg
- Mixed-layer LCL
- 775 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.0
The text
As transmitted, in the capitals the NWS used until 2016.
849 WGUS53 KFGF 310317 FFWFGF MNC051-311200- /O.NEW.KFGF.FF.W.0003.110531T0317Z-110531T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1012 PM CDT MON MAY 30 2011 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * FLASH FLOOD WARNING FOR... GRANT COUNTY IN WEST CENTRAL MINNESOTA... * UNTIL 700 AM CDT TUESDAY * AT 1012 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR INDICATED 2 TO 3 INCHES OF RAIN HAVE FALLEN IN THE HERMAN...NORCROSS AND ELBOW LAKE AREAS. 1.60 INCHES OF RAIN HAD FALLEN BETWEEN 900 PM AND 1000 PM IN ELBOW LAKE. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ELBOW LAKE...BARRETT...HERMAN...NORCROSS AND WENDELL. ADDITIONAL STRONG THUNDERSTORMS ARE FORECAST TO MOVE ACROSS THE WARNING AREA BETWEEN 1030 PM AND 200 AM MONDAY MORNING. ONE TO TWO INCHES MORE RAIN... WITH LOCALLY HEAVIER AMOUNTS ARE POSSIBLE. THE FOLLOWING STREAMS ARE INCLUDED IN THE WARNING...POMME DE TERRE RIVER...MACSVILLE...FIVEMILE CREEK AND DELAWARE TS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN THE DANGERS OF FLASH FLOODING ARE HARD TO RECOGNIZE. TURN AROUND DONT DROWN. AVOID DRIVING ON FLOODED ROADS. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. && LAT...LON 4608 9583 4577 9583 4577 9624 4609 9623 $$ EWENS
2 follow-up statements
920 WGUS73 KFGF 310535 FFSFGF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1227 AM CDT TUE MAY 31 2011 MNC051-311200- /O.CON.KFGF.FF.W.0003.000000T0000Z-110531T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GRANT MN- 1227 AM CDT TUE MAY 31 2011 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM CDT FOR GRANT COUNTY... AT 1227 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT HEAVY RAINFALL OF 2 TO 3 INCHES HAD OCCURRED DURING THE EVENING HOURS MONDAY. MUCH OF THIS RAINFALL OCCURRED IN A SHORT PERIOD OF TIME. THE HEAVIEST RAINFALL FELL WITHIN A BAND FROM HERMAN TO JUST SOUTHWEST OF ELBOW LAKE. LAW ENFORCEMENT REPORTS SEVERAL ROADS WITH WATER FLOWING OVER TOP...AND FLOODED BASEMENTS WITHIN THIS HEAVIER BAND. THE FOLLOWING STREAMS ARE INCLUDED IN THE WARNING...POMME DE TERRE RIVER...MACSVILLE...FIVEMILE CREEK AND DELAWARE TS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN THE DANGERS OF FLASH FLOODING ARE HARD TO RECOGNIZE. TURN AROUND DONT DROWN. AVOID DRIVING ON FLOODED ROADS. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. && LAT...LON 4608 9583 4577 9583 4577 9624 4609 9623 $$ TG
520 WGUS73 KFGF 311145 FFSFGF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 645 AM CDT TUE MAY 31 2011 MNC051-311158- /O.CAN.KFGF.FF.W.0003.000000T0000Z-110531T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GRANT MN- 645 AM CDT TUE MAY 31 2011 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR GRANT COUNTY... 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 4608 9583 4577 9583 4577 9624 4609 9623 $$ HOPPES
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 8:47 PM CDT | Tornado Warning | FGF | Clay | 43 min |
| May 30, 8:58 PM CDT | Tornado Warning | FGF | Polk | 47 min |
| May 30, 9:06 PM CDT | Tornado Warning | FGF | Polk | 39 min |
| May 30, 9:12 PM CDT | Tornado Warning | FGF | Grant | 48 min |
| May 30, 9:22 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Norman | 38 min |
| May 30, 9:40 PM CDT | Severe Thunderstorm Warning | FGF | Pennington, Polk, Red Lake | 65 min |
| May 30, 9:43 PM CDT | Tornado Warning | FGF | Polk | 47 min |
| May 30, 9:48 PM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 27 min |
| May 30, 9:50 PM CDT | Severe Thunderstorm Warning | FGF | Kittson | 25 min |
| May 30, 10:20 PM CDT | Areal Flood Advisory | FGF | Polk | 8 hr |
| May 30, 10:21 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Otter Tail and 2 more | 54 min |
| May 30, 10:33 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more | 57 min |
| May 30, 11:16 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 29 min |
| May 31, 3:44 AM CDT | Wind Advisory | FGF | Becker, Beltrami, Clay, Clearwater, Grant, Hubbard and 11 more | 19 hr |
Nearby
Flash Flood Warnings in Minnesota, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.