Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 26, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 7, 1990, 5:08 PM CDT for Becker County, Otter Tail County, Minnesota. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Jul 7, 1990, 5:08 PM CDT (22:08 UTC)
- Expired
- Jul 7, 1990, 5:45 PM CDT
- In force
- 37 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Becker County, MN, Otter Tail County, MN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 10.1 hours before the alert went out and 260 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
- 24 J/kg
- Mixed-layer CIN
- -594 J/kg
- Mixed-layer LCL
- 595 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 677 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KFAR 072208
SVRFAR
MNC005-027-107-111-072315-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FARGO ND
508 PM CDT SAT JUL 7 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 615 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE NORTHWEST PART OF MINNESOTA
SOUTHERN BECKER...NORTHERN CLAY...SOUTHERN NORMAN...THE
CITY OF DETROIT LAKES...
IN THE WEST CENTRAL PART OF MINNESOTA
EXTREME NORTHERN OTTER TAIL...
AT 500 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTH-
WEST OF DETROIT LAKES MINNESOTA IN THE CITY OF COMMORANT AREA AND
ANOTHER SEVERE THUNDERSTORM 15 TO 30 MILES NORTH-NORTHEAST OF FARGO
IN THE GEORGETOWN AREA. BOTH STORMS WERE MOVING EAST AT 35 MILES
AN HOUR.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION...MOVE T{O AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.
EWENSWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 7, 2:37 PM CDT, 2 hours 31 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-072030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 225 PM CDT SAT JUL 7 1990 ...THUNDERSTORMS DEVELOPING RAPDILY OVER SOUTHEAST NORTH DAKOTA AND NORTHEAST SOUTH DAKOTA... AT 225 PM CDT A SMALL AREA OF SCATTERED THUNDERSTORMS HAD DEVELOPED OVER SOUTHEAST NORTH DAKOTA AND NORTHEAST SOUTH DAKOTA. THESE THUNDERSTORMS WERE LOCATED 30 MILES SOUTH OF FARGO NORTH DAKOTA SOUTHWEST TO 20 MILES NORTHEAST OF ABERDEEN SOUTH DAKOTA. MOVEMENT WAS TO THE EAST AT 20 MILES AN HOUR. THESE THUNDERSTORMS COULD DEVELOP RAPIDLY AS THEY ARE IN AN AREA OF POTENTIALLY UNSTABLE AIR. ANOTHER AREA OF THUNDERSTORMS CONTINUED OVER CENTRAL AND NORTHEAST NORTH DAKOTA AND NORTHWEST MINNESOTA. THESE THUNDERSTORMS EXTENDED FROM 50 MILES EAST OF THIEF RIVER FALLS MINNESOTA SOUTHWEST TO JAMESTOWN NORTH DAKOTA AND WERE MOVING EAST AT 25 MILES AN HOUR. SKIES REMAINED MOSTLY CLOUDY OVER EASTERN NORTH DAKOTA AND NORTHWEST AND WEST CENTRAL MINNESOTA. WINDS WERE SHIFTING TO THE EAST AT 10 TO 20 MILES AN HOUR AND TEMPERATURES HAD WARMED INTO THE LOWER 80S OVER MUCH OF THE AREA. A LOW PRESSURE SYSTEM OVER EASTERN SOUTH DAKOTA WAS MOVING EAST AND WILL CONTINUE TO PUSH MOISTURE INTO THE RED RIVER VALLEY THIS AFTERNOON. ANDERSEN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 5:08 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman | 52 min |
| Jul 7, 6:11 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Hubbard | 64 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1990Every severe thunderstorm warning in 1990
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.