Alert archive / North Dakota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 41, NWS Grand Forks, ND

July 3, 1986Barnes County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 3, 1986, 9:56 PM CDT for Barnes County, North Dakota. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jul 3, 1986, 9:56 PM CDT (02:56 UTC)
Expired
Jul 3, 1986, 11:00 PM CDT
In force
64 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Barnes 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 00:00Z, 2.9 hours before the alert went out and 201 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 00:00Z on 1986-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3938 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 00:00Z on 1986-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
3938 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1631 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 040308 COR
SVRFAR
NDC003-040400-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION
NATIONAL WEATHER SERVICE FARGO ND
956 PM CDT THU JUL 3 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1100 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF

EAST CENTRAL NORTH DAKOTA...BARNES AND THE CITY OF VALLEY CITY

AT 940 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES NORTHEAST
OF JAMESTOWN NORTH DAKOTA OR JUST WEST OF BALDHILL DAM OF EAST CENTRAL
NORTH DAKOTA.  THIS THUNDERSTORM WAS MOVING TO THE EAST AT 35 MILES
AN HOUR.

AT 940 PM GOLF BALL SIZE HAIL WAS REPORTED BY THE HIGHWAY
PATROL 15 MILES NORTHWEST OF VALLEY CITY NORTH DAKOTA OR AT THE
TOWN OF RODGERS.
REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 58 MPH AND/OR HAIL 3/4 OF AN INCH OR LARGER...DEADLY LIGHTNING...
AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA.

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING...SO YOU SHOULD BE ON THE LOOKOUT AND BE
PREPARED TO MOVE TO A PLACE OF SAFETY.

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.

DM/MB

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

Local storm report, Jul 3, 9:23 PM CDT, 33 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
900 PM CDT THU JUL 3 1986

TIME          EVENT
600 PM CDT   1/4 INCH HAIL 13 MILES NORTHWEST AND 7 MILES WEST OF
             LANGDON NORTH DAKOTA.  REPORTED BY CO-OP OBSERVERS IN
             CAVALIER COUNTY.

600 PM CDT   1/2 INCH TO 3/4 INCH HAIL REPORTED BY CO-OP OBSERVER
             8 MILES NORTHEAST OF STARKWEATHER NORTH DAKOTA.

650 PM CDT   GOLFBALL SIZE HAIL REPORTED BY HAM RADIO OPERATOR 2 MILES
             NORTH OF DEVILS LAKE NORTH DAKOTA.

710 PM CDT   1/4 INCH HAIL AT NEKOMA AND UNION IN CAVALIER COUNTY OF
             NORTHEAST NORTH DAKOTA.

740 PM CDT   10 MILES NORTH OF BORDULAC IN FOSTER COUNTY OF NORTH DAKOTA
             LAW ENFORCEMENT OFFICIAL REPORTED MARBLE SIZE HAIL...HEAVY
             RAIN...AND STRONG WINDS.

746 PM CDT   LAW ENFORCEMENT OFFICIAL AT LAKOTA NORTH DAKOTA REPORTED
             PEA SIZE HAIL...HEAVY RAIN...AND GUSTY WINDS.

749 PM CDT   PEA SIZE HAIL...HEAVY RAIN...AND GUSTY WINDS AT CARRINGTON
             NORTH DAKOTA.

705 PM CDT   CO-OP OBSERVER 12 MILES SOUTHWEST OF ADAMS NORTH DAKOTA IN
             WALSH COUNTY REPORTED 70 MPH WINDS.

800 PM CDT   CO-OP OBSERVER AT MCHENzRY NORTH DAKOTA IN FOSTER COUNTY
             REPORTED GOLFBALL SIZE HAIL.

MB

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 8:09 PM CDTSevere Thunderstorm WarningFGFGriggs, Nelson51 min
Jul 3, 9:01 PM CDTSevere Thunderstorm WarningFGFBarnes, Griggs59 min
Jul 3, 9:43 PM CDTTornado WarningFGFTraill47 min
Jul 3, 10:28 PM CDTSevere Thunderstorm WarningFGFCass, Traill62 min
Jul 3, 11:56 PM CDTSevere Thunderstorm WarningFGFRichland64 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.