Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 1, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at May 29, 1989, 10:26 AM CDT for Wilkin County, Minnesota; Richland County, North Dakota. It was in force for 64 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
- May 29, 1989, 10:26 AM CDT (15:26 UTC)
- Expired
- May 29, 1989, 11:30 AM CDT
- In force
- 64 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Wilkin County, MN, Richland 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 |
|---|---|---|---|
| May 29, 10:30 AM CDT | Tornado F0 | Richland, ND | |
| May 29, 10:42 AM CDT | Tornado F0 | Richland, ND | |
| May 29, 10:45 AM CDT | Thunderstorm Wind 57 | Richland, 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 12:00Z, 3.4 hours before the alert went out and 205 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 257 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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, May 29, 6:10 AM CDT, 4 hours 16 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 610 AM CDT MON MAY 29 1989 AT 600 AM CDT AN INTENSE THUNDERSTORM HAD DEVELOPED 20 MILES WEST OF FARGO IN THE CASSELLTON/AMENIA NORTH DAKOTA AREA. THIS STORM WAS MOVING EAST AT 45 MILES AN HOUR AND WILL PASS THROUGH THE FARGO/ MOORHEAD AREA BETWEEN 615 AMD 645 AM CDT. STRONG GUSTY WINDS...HAIL... FREQUENT LIGHTNING STRIKES WILL ACCOMPANY THIS STORM AS IT MOVES EAST. THIS STORM WILL BE MOVING ACROSS CLAY AND INTO BECKER COUNTIES OF MINNESOTA BY 700 AM CDT. OTHER STRONG THUNDERSTORMS WERE MOVING INTO CENTRAL NORTH DAKOTA WEST OF JAMESTOWN. STAY TUNED TO RADIO AND T.V. AS WELL AS NOAA WEATHER RADIO FOR LATER STATEMENTS AND POSSIBLE WARNINGS. EWENS
Special weather statement, May 29, 6:40 AM CDT, 3 hours 46 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 640 AM CDT MON MAY 29 1989 AT 630 AM CDT AN INTENSE THUNDERSTORM WAS LOCATED 10 MILES NORTHWEST OF FARGO NEAR HARWOOD NORTH DAKOTA. THIS STORM WAS MOVING EAST AT 45 MILES AN HOUR AND LIKELY CONTAINS HAIL...STRONG GUSTY WINDS...DANGEROUS LIGHTNING AND VERY HEAVY RAINS. THIS STORM WILL CROSS INTO MINNESOTA AND AFFECT CLAY...NORMAN AND NORTHERN BECKER COUNTIES BY 730 AM CDT. SOME CITIES IN THE PATH OF THIS STORM ARE GEORGETOWN...FELTON AND ULEN MINNESOTA. OTHERWISE...NUMEROUS SHOWERS AND THUNDERSTORMS...A FEW WITH HEAVY RAIN.. CONTINUED IN A LARGE AREA OF LIGHT RAIN OVER EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA. SHOWERS AND THUNDERSTORMS WERE MOVING INTO WEST CENTRAL MINNESOTA. THE STRONGEST STORMS WERE FROM THE FARGO AREA TO 50 MILES NORTHEAST OF FARGO NEAR TWIN VALLEY MINNESOTA. MOVEMENT WAS EAST AT 45 MILES AN HOUR. . CONDITIONS ARE FAVORABLE FOR STRONG THUNDERSTORMS TO CONTINUE ACROSS THE REGION THIS MORNING. STAY TUNED TO RADIO AND T.V. AS WELL AS NOAA WEATHER RADIO FOR LATER STATEMENTS. EWENS
Special weather statement, May 29, 9:45 AM CDT, 41 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 945 AM CDT MON MAY 29 1989 AT 930 AM CDT A STRONG THUNDERSTORM HAD DEVELOPED QUITE RAPIDLY NEAR FERGUS FALLS...IN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 11:15 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 60 min |
| May 29, 12:36 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 69 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1989Severe Thunderstorm Warnings in North Dakota, 1989Every severe thunderstorm warning in 1989
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.