Alert archive / Minnesota / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 152, NWS Grand Forks, ND

August 21, 1996Clearwater County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 21, 1996, 5:55 PM CDT for Clearwater County, Minnesota. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 21, 1996, 5:55 PM CDT (22:55 UTC)
Expired
Aug 21, 1996, 6:30 PM CDT
In force
35 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Clearwater County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 146 km from the middle of the area, began a volume at 22:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 10.9 hours before the alert went out and 190 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, International Fa, MN at 12:00Z on 1996-08-21Temperature 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, International Fa, MN at 12:00Z on 1996-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1019 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
108 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 212256
SVRFAR
MNC029-212330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA ND
555 PM CDT WED AUG 21 1996
 
THE NATIONAL WEATHER SERVICE IN EASTERN NORTH DAKOTA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST MINNESOTA
 
   ...SOUTHERN CLEARWATER COUNTY
 
AT 551 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES
NORTHWEST OF ZERKEL...OR 25 MILES SOUTHWEST OF BEMIDJI. THIS STORM WAS
MOVING EAST AT 35 MPH AND WILL AFFECT THE TOWN OF ZERKEL.
 
 
WHEN THUNDERSTORMS ARE OCCURRING...MOVE INTO A STRONG BUILDING.
DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES AND STAY AWAY FROM
WINDOWS.

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, Aug 21, 12:05 PM CDT, 5 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA
1205 PM CDT WED AUG 21 1996

TIME(CDT)     .....CITY LOCATION....    STATE      ...EVENT/REMARKS...
              ....COUNTY LOdCATION...

1000 AM       FOURTOWN                  MN         0.75 INCH HAIL
08/21/96      NORTHERN BELTRAMI

STRAGER
Local storm report, Aug 21, 2:37 PM CDT, 3 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA
236 PM CDT WED AUG 21 1996

TIME(CDT)     .....CITY LOCATION....    STATE      ...EVENT/REMARKS...
              ....COUNTY LOCATION...

1105 AM       HOLMES                    ND         0.75 INCH HAIL
08/21/96      SE GRAND FORKS

BOHORQUEZ

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 7:20 AM CDTSevere Thunderstorm WarningFGFMarshall25 min
Aug 21, 7:45 AM CDTSevere Thunderstorm WarningFGFMarshall15 min
Aug 21, 9:39 AM CDTSevere Thunderstorm WarningFGFBeltrami36 min
Aug 21, 10:15 AM CDTSevere Thunderstorm WarningFGFBeltrami30 min
Aug 21, 11:09 AM CDTSevere Thunderstorm WarningFGFBeltrami36 min
Aug 21, 6:12 PM CDTSevere Thunderstorm WarningFGFWilkin48 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.