Alert archive / Minnesota / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 124, NWS Twin Cities, MN

August 11, 1995Swift County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 11, 1995, 5:29 AM CDT for Swift County, Minnesota. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Aug 11, 1995, 5:29 AM CDT (10:29 UTC)
Expired
Aug 11, 1995, 6:00 AM CDT
In force
31 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Swift County, MN

The radar

The Minneapolis radar (KMPX), 173 km from the middle of the area, began a volume at 10:28 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

Minneapolis, MN (KMPX), launched 00:00Z, 10.5 hours before the alert went out and 170 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 00:00Z on 1995-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1599 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, Minneapolis, MN at 00:00Z on 1995-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.1939587897117Sfc1 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
1599 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
943 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KMSP 111030 RRA
SVRMSP
MNC151-111100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
529 AM CDT FRI AUG 11 1995
 
THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  600 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL MINNESOTA
 
   ...EASTERN SWIFT COUNTY
 
AT 528 AM DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR BENSON...OR
40 MILES SOUTH OF ALEXANDRIA. OFF DUTY LAW ENFORCEMENT REPORTED 60 MPH
WINDS JUST NORTH OF BENSON. TOWNS IN THE PATH INCLUDE...DEGRAFF... SWIFT
FALLS...AND MURDOCK.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL...
DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM.  PEOPLE IN MOBILE HOMES SHOULD GO
TO A STORM SHELTER.
 
&

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 4:40 AM CDTSevere Thunderstorm WarningMPXLac qui Parle33 min
Aug 11, 4:49 AM CDTSevere Thunderstorm WarningMPXStevens, Swift41 min
Aug 11, 5:18 AM CDTSevere Thunderstorm WarningMPXPope42 min
Aug 11, 5:45 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Stearns45 min
Aug 11, 6:01 AM CDTSevere Thunderstorm WarningMPXMeeker, Stearns44 min
Aug 11, 6:33 AM CDTSevere Thunderstorm WarningMPXMeeker, Wright57 min
Aug 11, 6:33 AM CDTSevere Thunderstorm WarningMPXBenton, Sherburne35 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1995Every severe thunderstorm warning in 1995

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.