Alert archive / North Dakota / Flash Flood Warnings in 2011
Flash Flood Warning 6, NWS Grand Forks, ND
NWS Grand Forks, ND issued this flash flood warning at Jul 16, 2011, 10:02 PM CDT for Nelson County, Ramsey County, North Dakota. It was in force for 10 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
- Jul 16, 2011, 10:02 PM CDT (03:02 UTC)
- Expired
- Jul 17, 2011, 8:00 AM CDT
- In force
- 10 hr
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Flood severity
- None
Counties Nelson County, ND, Ramsey County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 103 km from the middle of the area, began a volume at 03:03 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 3.0 hours before the alert went out and 217 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
- 4274 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1100 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 13.9
The text
As transmitted, in the capitals the NWS used until 2016.
532
WGUS53 KFGF 170304
FFWFGF
NDC063-071-171300-
/O.NEW.KFGF.FF.W.0006.110717T0304Z-110717T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1002 PM CDT SAT JUL 16 2011
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA...
NORTHERN NELSON COUNTY IN NORTHEAST NORTH DAKOTA...
* UNTIL 800 AM CDT SUNDAY
* AT 1002 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
RADAR ESTIMATES OF 2 TO 3 INCHES OF RAINFALL OVER THE PAST HOUR.
AN ADDITIONAL 1 TO 2 INCHES OF RAIN IS POSSIBLE OVERNIGHT.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
LAKOTA...CRARY...DAHLEN...DOYON...MAPES...MICHIGAN AND PETERSBURG.
THE FOLLOWING STREAMS AND LAKES ARE INCLUDED IN THE WARNING...GOOSE
RIVER...DEVILS LAKE ...EAST STUMP LAKE...WEST STUMP LAKE AND SILVER
CREEK.
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 4819 9874 4819 9793 4787 9788 4786 9850
4793 9853 4798 9867 4800 9867 4800 9874
$$
BRAMER2 follow-up statements
585
WGUS73 KFGF 170436
FFSFGF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1131 PM CDT SAT JUL 16 2011
NDC063-071-171300-
/O.CON.KFGF.FF.W.0006.000000T0000Z-110717T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NELSON ND-RAMSEY ND-
1136 PM CDT SAT JUL 16 2011
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 AM CDT SUNDAY
FOR SOUTH CENTRAL RAMSEY AND NORTHERN NELSON COUNTIES...
AT 1133 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
AN ISOLATED THUNDERSTORM WILL MOVE THROUGH THE MICHIGAN AND
PETERSBURG AREA BY MIDNIGHT. AN ADDITIONAL ONE HALF INCH WILL BE
POSSIBLE WITH THIS STORM. THE POSSIBILITY EXISTS FOR OTHER
THUNDERSTORMS TO DEVELOP OVERNIGHT.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
LAKOTA...CRARY...DAHLEN...DOYON...MAPES...MICHIGAN AND PETERSBURG.
THE FOLLOWING STREAMS AND LAKES ARE INCLUDED IN THE WARNING...GOOSE
RIVER...DEVILS LAKE...EAST STUMP LAKE...WEST STUMP LAKE AND SILVER
CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN THE DANGERS OF FLASH FLOODING
ARE HARD TO RECOGNIZE.
&&
LAT...LON 4819 9874 4819 9793 4787 9788 4786 9850
4793 9853 4798 9867 4800 9867 4800 9874
$$
BRAMER641
WGUS73 KFGF 171250
FFSFGF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
750 AM CDT SUN JUL 17 2011
NDC063-071-171305-
/O.EXP.KFGF.FF.W.0006.000000T0000Z-110717T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NELSON ND-RAMSEY ND-
750 AM CDT SUN JUL 17 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 AM CDT FOR SOUTH
CENTRAL RAMSEY AND NORTHERN NELSON 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 4819 9874 4819 9793 4787 9788 4786 9850
4793 9853 4798 9867 4800 9867 4800 9874
$$
JRThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:10 PM CDT | Tornado Warning | FGF | Griggs | 50 min |
| Jul 16, 7:53 PM CDT | Tornado Warning | FGF | Benson, Ramsey | 52 min |
| Jul 16, 8:36 PM CDT | Tornado Warning | FGF | Benson, Ramsey | 39 min |
| Jul 16, 9:24 PM CDT | Tornado Warning | FGF | Benson, Nelson, Ramsey | 51 min |
| Jul 16, 10:41 PM CDT | Areal Flood Advisory | FGF | Pembina, Walsh | 8 hr |
| Jul 16, 11:08 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 52 min |
| Jul 17, 11:45 AM CDT | Severe Thunderstorm Warning | FGF | Benson | 60 min |
| Jul 17, 12:33 PM CDT | Tornado Warning | FGF | Eddy | 42 min |
| Jul 17, 1:11 PM CDT | Tornado Warning | FGF | Eddy | 49 min |
| Jul 17, 2:24 PM CDT | Tornado Warning | FGF | Barnes, Griggs | 36 min |
| Jul 17, 2:57 PM CDT | Tornado Warning | FGF | Barnes, Griggs | 48 min |
| Jul 17, 3:34 PM CDT | Tornado Warning | FGF | Barnes, Griggs, Steele | 41 min |
| Jul 17, 4:12 PM CDT | Tornado Warning | FGF | Barnes, Cass | 63 min |
| Jul 17, 5:13 PM CDT | Tornado Warning | FGF | Cass | 45 min |
Nearby
Flash Flood Warnings in North 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.