Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 50, NWS Grand Forks, ND

September 13, 1990Wadena County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 13, 1990, 5:02 PM CDT for Wadena County, Minnesota. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Sep 13, 1990, 5:02 PM CDT (22:02 UTC)
Expired
Sep 13, 1990, 5:30 PM CDT
In force
28 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Wadena County, MN

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

Minneapolis, MN (KSTC), launched 12:00Z, 10.0 hours before the alert went out and 220 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, Minneapolis, MN at 12:00Z on 1990-09-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Minneapolis, MN at 12:00Z on 1990-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1762 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-139 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 132202
SVRFAR
MNC159-132230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FARGO ND
502 PM CDT THU SEP 13 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE CENTRAL PART OF MINNESOTA
      WADENA

AT 455 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 40 MILES
SOUTHEAST OF DETROIT LAKES MINNESOTA OR JUST NORTHEAST OF THE
TOWN OF SABEKA IN NORTHERN WADENA COUNTY OF MINNESOTA.  THIS
THUNDERSTORM WAS MOVING TO THE EAST AT 45 MILES AN HOUR.

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

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY TO PRODUCE TORNADOES
WITH LITTLE ORS NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.  IF YOU SPOT A FUNNEL OR A
TORNADO YOU SHOULD SEEK SHELTER IN A REINFORCED BUILDING.

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

Special weather statement, Sep 13, 4:37 PM CDT, 25 minutes before
NDZ012-013-014-015-016-017-018-MNZ001-006-007-010-011-013-132230-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
435 PM CDT THU SEP 13 1990

...RAPIDLY INTENSIFYING THUNDERSTORMS OVER NORTHCENTRAL AND WEST
CENTRAL MINNESOTA...

AT 430 PM CDT A CLUSTER OF RAPIDLY INTENSIFYING THUNDERSTORMS WITH VERY
HEAVY RAINS WAS IN THE AREA BOUNDED BY DETROIT LAKES...BEMIDJI AND
BRAINERD.  THESE STORMS WERE MOVING EAST AT 45 MILES AN HOUR AND WILL
BE CROSSING THE LEECH LAKE AREA BETWEEN 445 AND 515 PM CDT.  BOATERS
AND RECREATORS IN THE LAKES REGION AHEAD OF THIS CLUSTER OF STORMS
SHOULD BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING.
YOU SHOULD SEEK SHELTER WHEN THESE STORMS APPROACH YOUR AREA.

OTHERWISE...A BAND OF SHOWERS AND THUNDERSHOWERS WAS MOVING ACROSS
NORTHWEST MINNESOTA AND EAST CENTRAL NORTH DAKOTA.  THIS 30 MILE WIDE
AREA EXTENDED FROM NEAR VALLEY CITY NORTH DAKOTA TO JUST SOUTH OF
GRAND FORKS...TO 35 MILES NORTHEAST OF THIEF RIVER FALLS.  THIS LINE
OF SHOWERS AND THUNDERSHOWERS WAS MOVING EAST AT 45 MILES AN HOUR AND
WILL AFFECT THE CITIES OF HIGHLANDING...BELTRAMI...HENDRUM AND THE
AURTHUR/HUNTER AREA THROUGH 600 PM CDT.

IF YOU LI0VE IN THE TORNADO WATCH AREA YOU SHOULD BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS AND LISTEN TO RADIO...T.V. AS WELL AS NOAA
WEATHER RADIO FOR LATER STATEMENTS.
EWENS

Nearby

Severe Thunderstorm Warnings in Minnesota, 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; the sounding from the Mesonet's radiosonde archive.