Alert archive / Minnesota / Flash Flood Warnings in 2011
Flash Flood Warning 5, NWS Grand Forks, ND
NWS Grand Forks, ND issued this flash flood warning at Jul 16, 2011, 9:34 PM CDT for Kittson County, Roseau County, Minnesota. It was in force for 9 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
- Jul 16, 2011, 9:34 PM CDT (02:34 UTC)
- Expired
- Jul 17, 2011, 7:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kittson County, MN, Roseau County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 143 km from the middle of the area, began a volume at 02:35 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 16, 10:15 PM CDT | HEAVY RAIN 3.95 | Karlstad, MN | STREET FLOODING CONTINUES TO WORSEN IN KARLSTAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 2.6 hours before the alert went out and 223 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
- 1181 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 1398 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.9
The text
As transmitted, in the capitals the NWS used until 2016.
321 WGUS53 KFGF 170236 FFWFGF MNC069-135-171200- /O.NEW.KFGF.FF.W.0005.110717T0236Z-110717T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 934 PM CDT SAT JUL 16 2011 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN ROSEAU COUNTY IN NORTHWEST MINNESOTA... SOUTHEASTERN KITTSON COUNTY IN NORTHWEST MINNESOTA... * UNTIL 700 AM CDT SUNDAY * AT 934 PM CDT...WEATHER SPOTTERS REPORTED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATES OF 2 TO 3 INCHES OF RAIN OVER THE LAST HOUR FROM THESE THUNDERSTORMS. STREET FLOODING WAS BEGINNING TO OCCUR IN KARLSTAD. AN ADDITIONAL 1 TO 2 INCHES OF RAIN WILL BE POSSIBLE FROM THESE THUNDERSTORMS. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... KARLSTAD...HALMA AND STRATHCONA. THE FOLLOWING STREAM IS INCLUDED IN THE WARNING...SOUTH BRANCH TWO RIVERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE INTO WATER OF UNKNOWN DEPTH. ONE OR TWO FEET OF WATER WILL FLOAT MOST CARS DOWNSTREAM. TURN AROUND DONT DROWN. AVOID DRIVING ON FLOODED ROADS. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. && LAT...LON 4868 9603 4855 9603 4855 9683 4870 9676 $$ BRAMER
2 follow-up statements
734 WGUS73 KFGF 170415 FFSFGF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1111 PM CDT SAT JUL 16 2011 MNC069-135-171200- /O.CON.KFGF.FF.W.0005.000000T0000Z-110717T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KITTSON MN-ROSEAU MN- 1115 PM CDT SAT JUL 16 2011 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM CDT SUNDAY FOR SOUTHWESTERN ROSEAU AND SOUTHEASTERN KITTSON COUNTIES... AT 1111 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. AN ADDITIONAL BAND OF THUNDERSTORMS WILL MOVE THROUGH THE WARNED AREA THROUGH 1 AM CDT. RAINFALL RATES OF UP TO 2 INCHES PER HOUR ARE POSSIBLE WITH THESE THUNDERSTORMS. RAINFALL TOTALS OF UP TO 6 INCHES WILL BE POSSIBLE...ESPECIALLY IN THE KARLSTAD AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... KARLSTAD...HALMA AND STRATHCONA. THE FOLLOWING STREAM IS INCLUDED IN THE WARNING...SOUTH BRANCH TWO RIVERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN THE DANGERS OF FLASH FLOODING ARE HARD TO RECOGNIZE. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 4868 9603 4855 9603 4855 9683 4870 9676 $$ BRAMER
080 WGUS73 KFGF 171159 FFSFGF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 700 AM CDT SUN JUL 17 2011 MNC069-135-171215- /O.EXP.KFGF.FF.W.0005.000000T0000Z-110717T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KITTSON MN-ROSEAU MN- 700 AM CDT SUN JUL 17 2011 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHWESTERN ROSEAU AND SOUTHEASTERN KITTSON COUNTIES... 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. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN THE DANGERS OF FLASH FLOODING ARE HARD TO RECOGNIZE. && LAT...LON 4868 9603 4855 9603 4855 9683 4870 9676 $$ JR
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:54 PM CDT | Tornado Warning | FGF | Kittson, Marshall | 51 min |
| Jul 16, 8:42 PM CDT | Tornado Warning | FGF | Kittson, Marshall, Roseau | 48 min |
| Jul 16, 9:44 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Roseau | 61 min |
| Jul 16, 10:38 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Marshall, Roseau | 37 min |
| Jul 16, 10:41 PM CDT | Areal Flood Advisory | FGF | Kittson, Marshall | 8 hr |
| Jul 16, 11:08 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 52 min |
| Jul 16, 11:20 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Roseau | 40 min |
| Jul 17, 12:56 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Lake of the Woods, Marshall, Pennington | 64 min |
| Jul 17, 1:53 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 37 min |
| Jul 17, 2:25 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 25 min |
| Jul 17, 3:01 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 59 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.