Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 45, NWS Grand Forks, ND

September 7, 1990Richland County, Sargent County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 7, 1990, 2:18 AM CDT for Richland County, Sargent County, North Dakota. It was in force for 42 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
Sep 7, 1990, 2:18 AM CDT (07:18 UTC)
Expired
Sep 7, 1990, 3:00 AM CDT
In force
42 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Richland County, ND, Sargent 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

TimeReportWhereRemark
Sep 7, 2:20 AM CDTThunderstorm Wind 0Richland, ND
Sep 7, 2:30 AM CDTThunderstorm Wind 0Richland, ND
Sep 7, 2:40 AM CDTThunderstorm Wind 0Richland, 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 00:00Z, 7.3 hours before the alert went out and 167 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, Aberdeen, SD at 00:00Z on 1990-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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, Aberdeen, SD at 00:00Z on 1990-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.19395878Sfc1 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
7 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
2740 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
49 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 KFAR 070718
SVRFAR
NDC017-077-081-070800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FARGO ND
218 AM CDT FRI SEP 7 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 300 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE EAST CENTRAL PART OF NORTH DAKOTA
      SOUTHERN CASS...

   IN THE SOUTHEAST PART OF NORTH DAKOTA
      RICHLAND...SARGENT...THE CITIES OF 
      WAHPETON/BRECKENRIDGE...

AT 215 AM CDT RADAR INDICATED SEVERE THUNDERSTORMS FROM 25 MILES
SOUTHWEST OF FARGO NORTH DAKOTA...IN EXTREME SOUTHERN CASS COUNTY
TO 75 MILES SOUTHWEST OF FARGO IN WESTERN SARGENT COUNTY NEAR THE
TOWNS OF GWINNER AND FORMAN.

THESE SEVERE THUNDERSTORMS WERE MOVING SOUTHEAST AT 45 MILES AN
HOUR AND HAVE PRODUCED WINDS IN EXCESS OF 60 MILES AN HOUR.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERGY HEAVY RAIN.
FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.

MORIN

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, Sep 7, 12:44 AM CDT, 1 hour 34 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-070630-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
1235 AM CDT FRI SEP 7 1990

...INTENSE THUNDERSTORMS WILL BE MOVING INTO SOUTHEAST NORTH DAKOTA...

AT 1227 AM CDT...INTENSE THUNDERSTORMS...WITH VERY HEAVY RAIN EXTENDED
FROM SOUTHERN GRIGGS COUNTY NEAR COOPERSTOWN...SOUTHWEST INTO STUTSMAN
COUNTY...JUST WEST AND NORTHWEST OF JAMESTOWN IN EAST CENTRAL AND
CENTRAL NORTH DAKOTA. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 45
MILES AN HOUR AND SHOULD MOVE THROUGH STUSTMAN AND GRIGGS COUNTIES
INTO LA MOURE AND BARNES COUNTIES OF SOUTHEAST NORTH DAKOTA BY 130 AM.
THESE INTENSE THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL...VERY
HEAVY RAIN...STRONG WIND AND DANGEROUS LIGHTNING AND PERSONS OVER
PARTS OF SOUTHEAST AND EAST CENTRAL NORTH DAKOTA SHOULD REMAIN ALERT
FOR RAPIDLY CHANGING WEATHER CONDITIONS.

A LARGE AREA OF SCATTERED SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY
RAIN WAS OVER A PORTION OF NORTHEAST...EAST CENTRAL AND CENTRAL NORTH
DAKOTA AND A SMALL PART OF NORTHWEST MINNESOTA.

THIS AREA WAS 100 MILES WIDE AND EXTENDED FROM 50 MILES WEST OF
JAMESTOWN IN CENTRAL NORTH DAKOTA...NORTHEASTWARD TO AROUND THIEF
RIVER FALLS IN NORTHWEST MINNESOTA.

THESE SHOWERS AND THUNDERSTORMS WERE ALSO MOVING SOUTHEAST AT 40 TO
45 MILES AN HOUR AND SHOULD MOVE INTO PARTS OF SOUTHEAST NORTH
DAKOTA AND WEST CENTRAL MINNESOTA BY 130 AM.
SPIES

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 1:14 AM CDTSevere Thunderstorm WarningFGFBarnes, Cass61 min
Sep 7, 1:14 AM CDTSevere Thunderstorm WarningFGFLaMoure61 min
Sep 7, 1:43 AM CDTSevere Thunderstorm WarningFGFRansom, Richland62 min
Sep 7, 2:18 AM CDTSevere Thunderstorm WarningFGFCass42 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1990Every severe thunderstorm warning in 1990

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.