Alert archive / North Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 1, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Apr 25, 1986, 1:53 PM CST for Richland County, North Dakota. It was in force for 52 min.
The area
The counties it named.
The facts
- Issued
- Apr 25, 1986, 1:53 PM CST (19:53 UTC)
- Expired
- Apr 25, 1986, 2:45 PM CST
- In force
- 52 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Richland 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
Aberdeen, SD (KHON), launched 12:00Z, 7.9 hours before the alert went out and 189 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
- 504 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 142 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 251953 SVRFAR NDC077-252045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FARGO ND 153 PM CST FRI APR 25 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 245 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTHEAST NORTH DAKOTA...RICHLAND AT 145 PM CST 3/4 INCH HAIL WAS REPORTED BY LAW ENFORCEMENT AT GREAT BEND NORTH DAKOTA..15 MILES SOUTHWEST OF WAHPETGON NORTH DAKOTA. THIS WARNING INCLUDES THE CITIES OF WAHPETON/BRECKENRIDGE.
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, Apr 25, 1:09 PM CST, 44 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 109 PM CST FRI APR 25 1986 AT 105 PM CST...A CLUSTER OF INTENSE THUNDERSTORMS HAD RAPIDLY DEVELOPED OVER RICHLAND COUNTY OF SOUTHEAST NORTH DAKOTA...ABOUT 40 TO 60 MILES SOUTH OF FARGO. THESE THUNDERSTORMS LIKELY CONTAIN VERY HEAVY RAIN..HAIL..GUSTY WINDS AND DANGEROUS LIGHTNING. THESE THUNDERSTORMS WERE MOVING NORTH AT 45 MILES AN HOUR AND WILL BE IN THE FARGO/MOORHEAD AREA BETWEEN 145 AND 2PM CST THIS AFTERNOON. EWENS
Special weather statement, Apr 25, 1:43 PM CST, 10 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 140 PM CST FRI APR 25 1986 ..TORNADO WATCH FOR PARTS OF NORTHEAST SOUTH DAKOTA AND WEST CENTRAL MINNESOTA UNTIL 8PM CST... AT 130 PM CST...A CLUSTER OF INTENSE THUNDERSTORMS CONTINUED OVER RICHLAND COUNTY OF SOUTHEAST NORTH DAKOTA AND WERE MOVING INTO CASS COUNTY OF SOUTHEAST NORTH DAKOTA...BETWEEN 30 AND 45 MILES SOUTH OF FARGO. BETWEEN 1PM AND 115 PM CST THESE THUNDERSTORMS HAD PRODUCED 1/2 INCH DIAMETER HAIL IN LIDGERWOOD AND MANTADOR NORTH DAKOTA..ABOUT 50 MILES SOUTH OF FARGO. THESE THUNDERSTORMS WILL MOVE THROUGH THE FARGO/MOORHEAD AREA BETWEEN 145 AND 215 PM CST AND WILL LIKELY CONTAIN HAIL..VERY HEAVY RAIN.. DANGEROUS LIGHTNING AND BREIF GUSTY WINDS. IN ADDITION...WIDELY SCATTERED THUNDERSTORMS..A FEW WITH VERY HEAVY RAIN..WERE EMBEDED IN A LARGE AREA OF RAIN THAT COVERED MOST OF EASTERN NORTH DAKOTA..NORTHEAST SOUTH DAKOTA..AND MUCH OF NORTHWEST AND WEST CENTRAL MINNESOTA. THE STRONGEST THUNDERSTORMS WERE 35 MILES SOUTHWEST OF GRAND FORKS NORTH DAKOTA AND ALONG THE NORTH DAKOTA/MINNESOTA STALE LINES 35 MILES WEST OF FERGUS FALLS MINNESOTA. AREAL COVERAGE AND INTENSITY H2AD INCREASED SINCE 1230 PM CST AND MOVEMENT WAS NOW NORTH AT 45 MILES AN HOUR. EWENS
Nearby
Severe Thunderstorm Warnings in North Dakota, 1986Every severe thunderstorm warning in 1986
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.