Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 8, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 23, 1987, 2:01 AM CDT for Traill County, North Dakota; Norman County, Polk County, Minnesota. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- Jun 23, 1987, 2:01 AM CDT (07:01 UTC)
- Expired
- Jun 23, 1987, 3:00 AM CDT
- In force
- 59 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Norman County, MN, Polk County, MN, Traill County, ND
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
International Fa, MN (KINL), launched 00:00Z, 7.0 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
- 1488 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1799 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 109 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 230701 SVRFAR NDC097-MNC107-119-230800- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FARGO ND 201 AM CDT TUE JUN 23 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF EAST CENTRAL NORTH DAKOTA...EASTERN TRAILL NORTHWEST MINNESOTA...NORTHWEST NORMAN AND WESTERN POLK AT 155 AM CDT A SEVERE THUNDERSTORM WAS 30 MILES NORTH OF FARGO NORTH DAKOTA MOVING EAST AT 30 MILES AN HOUR. REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH AND/OR HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING... AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA. REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT. IF THREATENING WEATHER APPROACHES...YOU SHOULD GO TO A PLACE OF SAFETY IMMEDIATELY. REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY AFTER THE STORM PASSES. INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS... STAY AWAY FROM HIGH OBJECTS. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES AND ELECTRICAL EQUIPMENT. BENNETT
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, Jun 23, 12:43 AM CDT, 1 hour 18 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 1240 AM CDT TUE JUN 23 1987 ...STRONG THUNDERSTORMS OVER EASTERN NORTH DAKOTA AND WEST CENTRAL MINNESOTA... AT 1230 AM CDT...SCATTERED STRONG THUNDERSTORMS HAD MOVED INTO PARTS OF EASTERN NORTH DAKOTA AND A SMALL PART OF WEST CENTRAL MINNESOTA. STRONGEST THUNDERSTORMS WERE 40 MILES WEST OF GRAND FORKS NORTH DAKOTA NEAR MC VILLE...20 MILES NORTHEAST OF JAMESTOWN...60 MILES SOUTHWEST OF FARGO NEAR VERONA AND 30 MILES SOUTHWEST OF ALEXANDRIA MINNESOTA. THESE THUNDERSTORMS APPEARED TO BE PRODUCING VERY HEAVY RAIN AND DANGEROUS LIGHTNING STRIKES..BUT MAY ALSO DROP SOME SMALL HAIL AND CREATE SOME GUSTY WINDS. OTHER SHOWERS AND THUNDERSTORMS..SOME WITH VERY HEAVY RAIN..CONTINUED OVER CENTRAL..SOUTHEAST..AND NORTHEAST NORTH DAKOTA..AND EXTENDED INTO NORTHEAST SOUTH DAKOTA. . OTHER THUNDERSTORMS CONTINUED TO DEVELOP OVER PARTS OF WEST CENTRAL MINNESOTA..MAINLY FROM FERGUS FALLS SOUTH TO WILLMAR. MOVEMENT OF ALL THE THUNDERSTORMS WAS EAST AT 25 MILES AN HOUR. VOELKER
Special weather statement, Jun 23, 1:45 AM CDT, 16 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 140 AM CDT TUE JUN 23 1987 AT 130 AM CDT...SCATTERED STRONG THUNDERSTORMS CONTINUED TO MOVE INTO PARTS OF EASTERN NORTH DAKOTA AND PARTS OF WEST CENTRAL AND CENTRAL MINNESOTA. STRONGEST STORMS WERE 30 MILES WEST AND 15 MILES NORTH OF THE FARGO/ MOORHEAD AREA NEAR ARGUSVILLE AND BUFFALO...35 MILES SOUTHWEST OF GRAND FORKS NEAR SHARON AND 30 MILES NORTH OF FARGO NEAR HILLSBORO. THESE THUNDERSTORMS COULD PRODUCE VERY HEAVY RAIN..DANGEROUS LIGHTNING STRIKES..SMALL HAIL AND SOME GUSTY WINDS. OTHER THUNDERSTORMS...SOME WITH HEAVY RAIN CONTINUED OVER WEST CENTRAL MINNESOTA FROM THE DETROIT LAKES AREA SOUTH TO NEAR WILLMAR. MOVEMENT OF THE THUNDERSTORMS WAS EAST AT 30 MILES AN HOUR. VOELKER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 3:00 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater | 2 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1987Severe Thunderstorm Warnings in North Dakota, 1987Every severe thunderstorm warning in 1987
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.