Alert archive / Minnesota / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 91, NWS Sioux Falls, SD

August 13, 1995Lincoln County, Lyon County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 13, 1995, 1:51 PM CDT for Lincoln County, Lyon County, Minnesota. It was in force for 34 min.

The area

The counties it named.

The facts

Issued
Aug 13, 1995, 1:51 PM CDT (18:51 UTC)
Expired
Aug 13, 1995, 2:25 PM CDT
In force
34 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Lincoln County, MN, Lyon County, MN

The radar

The Sioux Falls radar (KFSD), 107 km from the middle of the area, began a volume at 18:52 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

Aberdeen, SD (KABR), launched 12:00Z, 6.9 hours before the alert went out and 193 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 12:00Z on 1995-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1795 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 12:00Z on 1995-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 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
1795 J/kg
Mixed-layer CIN
-149 J/kg
Mixed-layer LCL
514 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 131852 RRA
SVRFSD
MNC081-083-117-131925-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
151 PM CDT SUN AUG 13 1995

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 225 PM CDT 
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHWEST MINNESOTA

   ...SOUTHEASTERN LINCOLN COUNTY
   ...SOUTHWESTERN LYON COUNTY
   ...NORTHEASTERN PIPESTONE COUNTY
 
AT 148 PM CDT...A SEVERE THUNDERSTORM WAS DETECTED BY SIOUX FALLS
DOPPLER RADAR 10 MILES NORTH OF PIPESTONE  OR 5 MILES NORTHWEST OF
HOLLAND MOVING NORTHEAST AT 40 MPH.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
RUTHTON                  AROUND 200 PM CDT
TYLER                    AROUND 200 PM CDT
FLORENCE                 AROUND 205 PM CDT
BURCHARD                 AROUND 210 PM CDT
RUSSELL                  AROUND 215 PM CDT
BALATON                  AROUND 220 PM CDT
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG...REINFORCED BUILDING.  DAMAGING WIND...LARGE HAIL...VERY
HEAVY RAIN AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE
THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS
PASSED.

UM0LAND

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, Aug 13, 12:05 PM CDT, 1 hour 46 minutes before
SDZ004>011-016>023-033>040-045>071-132200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1205 PM CDT SUN AUG 13 1995

...SEVERE WEATHER POSSIBLE THIS AFTERNOON AND EVENING ACROSS
CENTRAL AND EASTERN SOUTH DAKOTA...

A STRONG POTENTIAL FOR SEVERE THUNDERSTORMS EXISTS THIS AFTERNOON
AND EVENING ACROSS CENTRAL AND EASTERN SOUTH DAKOTA...WITH THE
GREATEST THREAT OF SEVERE THUNDERSTORMS IN THE NORTHEAST PARTS OF
THE STATE.

A VERY WARM...MOIST...AND UNSTABLE AIR MASS LIES ACROSS CENTRAL AND
EASTERN SOUTH DAKOTA.  A STRONG COLD FRONT IN WESTERN SOUTH DAKOTA
AT LATE MORNING WILL RACE TO THE EAST THIS AFTERNOON AND SET OFF A
LINE OF STRONG TO SEVERE THUNDERSTORMS AHEAD OF THE FRONT.  AT THIS
TIME...THE FRONT IS EXPECTED TO REACH THE MISSOURI RIVER BY LATE
AFTERNOON AND THE EASTERN BORDER AROUND 9PM.

THUNDERSTORMS WERE DEVELOPING RAPIDLY LATE THIS MORNING EAST OF THE
MISSOURI RIVER...AND ACROSS MOST OF NORTHEAST NEBRASKA.  THESE STORMS
WILL CONTINUE TO PROPAGATE INTO AN INCREASINGLY UNSTABLE AIR MASS
OVER EASTERN SOUTH DAKOTA THIS AFTERNOON AND EVENING.  EXTREMELY
HEAVY RAIN AND STRONG WINDS APPEAR TO BE THE GREATEST THREAT WITH
THESE STORMS...BUT IN THE NORTHEAST PARTS OF THE STATE WHERE
STRONGER WINDS ALOFT EXIST...ISOLATED TORNADOES ARE POSSIBLE.

CHAPMAN
Special weather statement, Aug 13, 12:10 PM CDT, 1 hour 41 minutes before
SDZ004>011-016>023-033>040-045>071-132200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1205 PM CDT SUN AUG 13 1995

...SEVERE WEATHER POSSIBLE THIS AFTERNOON AND EVENING ACROSS
CENTRAL AND EASTERN SOUTH DAKOTA...

A STRONG POTENTIAL FOR SEVERE THUNDERSTORMS EXISTS THIS AFTERNOON
AND EVENING ACROSS CENTRAL AND EASTERN SOUTH DAKOTA...WITH THE
GREATEST THREAT OF SEVERE THUNDERSTORMS IN THE NORTHEAST PARTS OF
THE STATE.

A VERY WARM...MOIST...AND UNSTABLE AIR MASS LIES ACROSS CENTRAL AND
EASTERN SOUTH DAKOTA.  A STRONG COLD FRONT IN WESTERN SOUTH DAKOTA
AT LATE MORNING WILL RACE TO THE EAST THIS AFTERNOON AND SET OFF A
LINE OF STRONG TO SEVERE THUNDERSTORMS AHEAD OF THE FRONT.  AT THIS
TIME...THE FRONT IS EXPECTED TO REACH THE MISSOURI RIVER BY LATE
AFTERNOON AND THE EASTERN BORDER AROUND 9PM.

THUNDERSTORMS WERE DEVELOPING RAPIDLY LATE THIS MORNING EAST OF THE
MISSOURI RIVER...AND ACROSS MOST OF NORTHEAST NEBRASKA.  THESE STORMS
WILL CONTINUE TO PROPAGATE INTO AN INCREASINGLY UNSTABLE AIR MASS
OVER EASTERN SOUTH DAKOTA THIS AFTERNOON AND EVENING.  EXTREMELY
HEAVY RAIN AND STRONG WINDS APPEAR TO BE THE GREATEST THREAT WITH
THESE STORMS...BUT IN THE NORTHEAST PARTS OF THE STATE WHERE
STRONGER WINDS ALOFT EXIST...ISOLATED TORNADOES ARE POSSIBLE.

CHAPMAN

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 13, 1:32 PM CDTSevere Thunderstorm WarningFSDLincoln30 min
Aug 13, 1:51 PM CDTSevere Thunderstorm WarningFSDPipestone31 min
Aug 13, 2:06 PM CDTSevere Thunderstorm WarningFSDLincoln, Lyon34 min
Aug 13, 2:28 PM CDTSevere Thunderstorm WarningFSDLyon32 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.