Alert archive / North Dakota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 8, NWS Grand Forks, ND

June 3, 1986LaMoure County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 3, 1986, 4:37 PM CDT for LaMoure County, North Dakota. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
Jun 3, 1986, 4:37 PM CDT (21:37 UTC)
Expired
Jun 3, 1986, 5:10 PM CDT
In force
33 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County LaMoure 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.6 hours before the alert went out and 169 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.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 1986-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 117 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 1986-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 236 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
117 J/kg
Mixed-layer CIN
-419 J/kg
Mixed-layer LCL
1807 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
236 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KBIS 032149 COR
SVRBIS
NDC045-047-032210-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING..CORRECTION
NATIONAL WEATHER SERVICE BISMARCK ND
437 PM CDT TUE JUN  3 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 510 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF

SOUTH CENTRAL NORTH DAKOTA..LOGAN
SOUTHEAST NORTH DAKOTA..LA MOURE

AT 437 PM CDT A SEVERE THUNDERSTORM WAS LOCATED 24 MILES
NORTH OF KULM NORTH DAKOTA OR 40 MILES SOUTHWEST OF
JAMESTOWN NORTH DAKOTA AND WAS MOVING EAST AT 35 MPH.

IF YOU ARE IN OR NEAR THE WARNED AREA CONSIDER GETTING INTO
A REINFORCED SHELTER. SEVERE THUNDERSTORMS CAN BE DEADLY
DUE TO..LIGHTNING..HAIL..HEAVOY RAINS..FLASH FLOODS..AND
STRONG WINDS. ALSO THESE STORMS CAN AND OCCASIONALLY
DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING.
KS 2137Z

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 3, 3:42 PM CDT, 55 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
340 PM CDT TUE JUN 3 1986

AT 330 PM CDT...ISOLATED THUNDERSTORMS WITH VERY HEAVY RAIN WERE
DEVELOPING RAPIDLY OVER WEST CENTRAL MINNESOTA BETWEEN FARGO AND
DETROIT LAKES.  THE  STRONGEST THUNDERSTORMS WERE IN A SMALL CLUSTER
BETWEEN HAWLEY AND LAKE PARK OR ABOUT 15 MILES WEST OF DETROIT LAKES
MINNESOTA.

ANOTHER THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED 20 MILES EAST OF
JAMESTOWN IN EXTREME WESTERN BARNES COUNTY.

THE THUNDERSTORMS NEAR DETROIT LAKES SHOULD BE MOVING THROUGH THE
DETROIT LAKES AREA BY 430 PM CDT.  THE STORM EAST OF JAMESTOWN SHOULD
BE MOVING INTO THE VALLEY CITY AREA OF EAST CENTRAL NORTH DAKOTA BY
430 PM CDT.

CONDITIONS ARE GOOD FOR THE CONTINUED DEVELOPMENT OF THESE THUNDER-
STORMS.  YOU SHOULD STAY ALERT FOR THREATENING WEATHER AND STAY TUNED
TO RADIO AND T.V. AS WELL AS NOAA WEATHER RADIO FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

IN ADDITION...WIDELY SCATTERED THUNDERSTORMS AND RAINSHOWERS CONTINUED
OVER PARTS OF NORTHWEST AND WEST CENTRAL MINNESOTA AS WELL AS NORTHEAST
NORTH DAKOTA.  THE STRONGEST THUNDERSTORMS WERE IN THE BEMIDJI/LEECH
LAKE AREAS.

MOVEMENT OF ALL THE THUNDERSTORMS AND RAINSHOWERS WAS EAST AT 25 MILES
AN HOUR.
EWENS

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 3, 3:52 PM CDTSevere Thunderstorm WarningFGFBarnes53 min
Jun 3, 5:03 PM CDTSevere Thunderstorm WarningFGFDickey, LaMoure42 min
Jun 3, 5:48 PM CDTSevere Thunderstorm WarningFGFDickey, LaMoure57 min
Jun 3, 6:16 PM CDTSevere Thunderstorm WarningFGFDickey59 min

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.