Alert archive / North Dakota / Flash Flood Warnings in 1997
Flash Flood Warning 29, NWS Grand Forks, ND
NWS Grand Forks, ND issued this flash flood warning at Oct 11, 1997, 11:25 PM CDT for Pembina County, Ramsey County, Walsh County, North Dakota. 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 counties it named.
The facts
- Issued
- Oct 11, 1997, 11:25 PM CDT (04:25 UTC)
- Expired
- Oct 12, 1997, 2:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Pembina County, ND, Ramsey County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 116 km from the middle of the area, began a volume at 04:28 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, 4.4 hours before the alert went out and 277 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
- 2113 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1427 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 120424 FFWFAR NDC067-071-099-120730- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1125 PM CDT SAT OCT 11 1997 THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 230 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST NORTH DAKOTA ...WESTERN PEMBINA COUNTY...RAMSEY COUNTY ...WESTERN WALSH COUNTY AT 1115 PM CDT RADAR RAINFALL ESTIMATES INDICATED THAT 1 TO 2.5 INCHES OF RAIN HAS FALLEN OVER AN AREA FROM DEVILS LAKE TO CAVILIER. AT 1115 PM CDT INTENSE THUNDERSTORMS WITH VERY HEAVY WERE IN A LINE FROM DEVILS LAKE TO CAVALIER. THESE STROMS CONTINUED TO MOVE NORTHEAST AT 35 MPH AND CONTINUED TO PRODUCE HEAVY RAIN OVER ALREADY SATURATED GROUND. LOCALLY...UP TO AN ADDITIONAL INCH OF RAIN IS EXPECETD OVER THIS AREA BY 1 AM. ALONG WITH THE TORRIENTIAL...RAIN SMALL HAIL IS ALSO LIKELY FROM THESE STORMS. FLOODED ROADWAYS...PONDING OF WATER ON ROADS...OVERFILLED DITCHES AND FLOODING OF LOWLYING AREAS ARE LIKELY IN THE VICINITY OF DEVILS LAKE...LAWTON...EDMORE...HENSEL...FAIRDALE AND CAVALIER. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOG"NIZE FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED... MOVE QUICKLY TO HIGHER GROUND. KENNEDY
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 7:57 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy | 33 min |
| Oct 11, 8:30 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 45 min |
| Oct 11, 8:38 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 52 min |
| Oct 11, 11:47 PM CDT | Severe Thunderstorm Warning | FGF | Eddy | 28 min |
Nearby
Flash Flood Warnings in North Dakota, 1997Every flash flood warning in 1997
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.