Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 13, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 11, 1990, 9:28 PM CDT for Clay County, Norman County, Minnesota; Cass County, North Dakota. It was in force for 62 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 11, 1990, 9:28 PM CDT (02:28 UTC)
- Expired
- Jun 11, 1990, 10:30 PM CDT
- In force
- 62 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Clay County, MN, Norman County, MN, Cass County, ND
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 10:05 PM CDT | Tornado F0 | Clay, MN | |
| Jun 11, 10:10 PM CDT | Hail 1 | Cass, ND | |
| Jun 11, 10:20 PM CDT | Thunderstorm Wind 0 | Cass, ND |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Aberdeen, SD (KHON), launched 00:00Z, 2.5 hours before the alert went out and 272 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
- 2064 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1789 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KFAR 120228
SVRFAR
MNC027-107-NDC017-120330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FARGO ND
928 PM CDT MON JUN 11 1990
THE NATIONAL WEATHER SERVICE IN FARGO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTHWEST MINNESOTA
...WESTERN CLAY...SOUTHWESTERN NORMAN
IN EAST CENTRAL NORTH DAKOTA
...EASTERN CASS
THIS WARNING INCLUDES THE FARGO/MOORHEAD AREA...PERELEY AND GEORGETOWN
MINNESOTA.
AT 925 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES NORTHWEST
OF FARGO NORTH DAKOTA MOVING EAST AT 30 MILES AN HOUR. THIS
THUNDERSTORM IS PART OF A LINE WHICH HAS A HISTORY OF PRODUCING LARGE
HAIL AND WINDS OF OVER 55 MILES AN HOUR.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM0 BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
EWENSThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 10:30 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman | 45 min |
| Jun 11, 11:00 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen | 60 min |
| Jun 11, 8:07 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, LaMoure | 68 min |
| Jun 11, 8:07 PM CDT | Severe Thunderstorm Warning | FGF | Steele | 68 min |
| Jun 11, 8:26 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina | 64 min |
| Jun 11, 8:54 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom | 66 min |
| Jun 11, 8:54 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 66 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1990Severe Thunderstorm Warnings in North Dakota, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.