Alert archive / Minnesota / Flash Flood Warnings in 1998
Flash Flood Warning 11, NWS Grand Forks, ND
NWS Grand Forks, ND issued this flash flood warning at Jul 7, 1998, 6:58 AM CDT for Otter Tail County, Minnesota. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 7, 1998, 6:58 AM CDT (11:58 UTC)
- Expired
- Jul 7, 1998, 7:55 AM CDT
- In force
- 57 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Otter Tail County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 175 km from the middle of the area, began a volume at 12:01 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
Minneapolis, MN (KMPX), launched 00:00Z, 12.0 hours before the alert went out and 239 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
- 585 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 755 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 071159 FFWFAR MNC111-071255- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 658 AM CDT TUE JUL 7 1998 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA * UNTIL 755 AM CDT * AT 655 AM CDT...DOPPLER RADAR INDICATED A CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED ACROSS NORTHERN OTTER TAIL COUNTY FROM 20 MILES NORTH OF FERGUS FALLS NEAR PELICAN RAPIDS...TO 40 MILES NORTHEAST OF FERGUS FALLS NEAR NEW YORK MILLS MOVING EAST AT 20 MPH. * LAW ENFORCEMENT OFFICIALS IN OTTER TAIL COUNTY REPORTED A WASH OUT ON HIGHWAY 108 5 TO 6 MILES EAST OF PELICAN RAPIDS. DOPPLER RADAR ESTIMATES OF 1 TO 3 INCHES OF RAIN HAVE ALREADY FALLEN...WITH ADDITIONAL AMOUNTS OF 1 TO 2 INCHES EXPECTED. 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. & RA
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Forks, ND wrote its last area forecast discussion before this flash flood warning went out at Jul 7, 3:00 AM CDT, 3 hours 58 minutes earlier.
Area forecast discussion, Jul 7, 3:00 AM CDT, 3 hours 58 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
300 AM CDT TUE JUL 7 1998
FORECAST PROBLEM FOR TODAY IS PCPN. IR SATELLITE IMAGERY SHOWS CLOUD
TOPS ON AREAS OF TSRA IN CWFA WARMING. KMVX HAS TWO AREAS OF TSRA...ONE
IN NE NE AND ANOTHER IN SE ND...MOVING E-NE AT 20 MPH. ALTHOUGH THETA-E
RIDGE REMAINS TO THE WEST OF THE CWFA AT THIS TIME...CONVERGENCE ALONG
AND AHEAD OF TROF AND VCNTY OF SHORTWAVE HAVE PRODUCED TSRA WITH HEAVY
RAIN. WITH THE MAJORITY OF THE CWFA GETTING HEAVY RAIN THE PAST FEW
DAYS...THE SOIL IS SATURATED AND FFG VALUES AT AN INCH OR LESS.
MODELS SIMILAR IN MOVING SHORTWAVE AND TROF ACROSS E ND THIS MORNING
AND THROUGH MOST OF MN SIDE OF CWFA THIS AFTERNOON. WITH SFC DEWPOINTS
REMAINING IN THE 60S...DECENT K-INDEX VALUES...AND THETA-E RIDGE MOVING
INTO E ND...EXPECT TSRA TO CONTINUE PRODUCING HEAVY RAIN AS MOVE
EASTWARD ACROSS CWFA. ALSO WITH SHORTWAVE STILL IN VCNTY THROUGH THE
AFTERNOON...AREAS THAT SEE SUN TODAY COULD PRODUCE ADDITIONAL SHRA AND
TSRA. WITH STORMS PRETTY LOCALIZED...DO NOT BELIEVE THAT FLASH FLOOD
WATCH IS NEEDED AT THIS TIME. SHOULD BE ABLE TO HANDLE SITUATION WITH
MOSTLY URBAN AND SMALL STREAM FLOOD ADVISORIES. FORECAST SUGGESTIONS
THAT FOLLOW ARE PRELIMINARY GUIDANCE FOR COORDINATION ONLY. OFFICIAL
FORECASTS ARE CONTAINED IN BISZFPND AND MSPZFPMN.
FOR ND: DVL: SCATTERED TSRA...SOME WITH HEAVY RAIN...THIS MORNING
THEN MC THIS AFTERNOON...HIGH AROUND 75...WIND BECMG NW
5 TO 15.
GFK: MOSTLY CLOUDY WITH SCT TSRA...SOME WITH HEAVY
RAIN...HIGH 75 TO 80...LIGHT WIND BECMG NW 5 TO 15.
FAR: MOSTLY CLOUDY SCT TSRA...SOME WITH HEAVY RAIN...HIGH
AROUND 80...LIGHT SE WIND BECMG NW 5 TO 15 THIS
AFTERNOON.
FOR MN: HCO/ROX/FGN/FSE/TVF/FSE/BJI MNZ004>009-013>017: MC WITH
SCT TSRA...SOME WITH HEAVY RAIN...HIGH AROUND 75...LIGHT
SE WIND BECMG NW 5 TO 15 THIS AFTERNOON.
DTL/PKD/FFM MNZ022>024-027>032-040: MC WITH SCT TSRA...SOME
WITH HEAVY RAIN...HIGH 75 TO 80...LIGHT SE WIND BECMG NW
AT 5 TO 15 THIS AFTERNOON.
NGIn the hours before
Special weather statement, Jul 7, 6:45 AM CDT, 13 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-072100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 645 AM CDT TUE JUL 7 1998 ...NO SEVERE WEATHER EXPECTED ACROSS EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA TODAY... A TROF OF LOW PRESSURE...EXTENDING THROUGH THE RED RIVER VALLEY...WILL CONTINUE MOVING EAST TODAY...PRODUCING THUNDERSTORMS...SOME WITH VERY HEAVY RAIN. AFTER THE SHOWERS AND THUNDERSTORMS PASS THIS MORNING... SOME SUN CAN BE ANTICIPATED BEFORE ADDITIONAL SHOWERS AND THUNDERSTORMS DEVELOP THIS AFTERNOON. ALTHOUGH NO SEVERE WEATHER IS EXPECTED...HEAVY RAINS FROM SOME OF THESE STORMS COULD4 CAUSE FLOODING PROBLEMS. THE HAZARDOUS WEATHER OUTLOOK FOR EASTERN NORTH DAKOTA AND NORTHWESTERN MINNESOTA IS ISSUED DAILY BY 7 AM FROM THE NATIONAL WEATHER SERVICE IN GRAND FORKS. NG
Special weather statement, Jul 7, 6:45 AM CDT, 13 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-072100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 645 AM CDT TUE JUL 7 1998 ...NO SEVERE WEATHER EXPECTED ACROSS EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA TODAY... A TROF OF LOW PRESSURE...EXTENDING THROUGH THE RED RIVER VALLEY...WILL CONTINUE MOVING EAST TODAY...PRODUCING THUNDERSTORMS...SOME WITH VERY HEAVY RAIN. AFTER THE SHOWERS AND THUNDERSTORMS PASS THIS MORNING... SOME SUN CAN BE ANTICIPATED BEFORE ADDITIONAL SHOWERS AND THUNDERSTORMS DEVELOP THIS AFTERNOON. ALTHOUGH NO SEVERE WEATHER IS EXPECTED...HEAVY RAINS FROM SOME OF THESE STORMS COULD4 CAUSE FLOODING PROBLEMS. THE HAZARDOUS WEATHER OUTLOOK FOR EASTERN NORTH DAKOTA AND NORTHWESTERN MINNESOTA IS ISSUED DAILY BY 7 AM FROM THE NATIONAL WEATHER SERVICE IN GRAND FORKS. NG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:56 AM CDT | Flash Flood Warning | FGF | Otter Tail | 59 min |
Nearby
Flash Flood Warnings in Minnesota, 1998Every flash flood warning in 1998
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.