Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 60, NWS Sioux Falls, SD

July 25, 1995Osceola County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 25, 1995, 5:18 PM CDT for Osceola County, Iowa. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Jul 25, 1995, 5:18 PM CDT (22:18 UTC)
Expired
Jul 25, 1995, 6:05 PM CDT
In force
47 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Osceola County, IA

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.3 hours before the alert went out and 230 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 1995-07-25Temperature 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 1995-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
990 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
16 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 KFSD 252220
SVRFSD
IAC143-252305-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
518 PM CDT TUE JUL 25 1995

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 605 PM CDT 
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWEST IOWA

   ...NORTHERN OSCEOLA COUNTY
 
AT 515 PM CDT...A SEVERE THUNDERSTORM WAS DETECTED BY SIOUX FALLS
DOPPLER RADAR 7 MILES NORTHWEST OF SIBLEY  OR 7 MILES NORTHWEST OF
SIBLEY MOVING EAST AT 28 MPH.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
ALLENDORF                AROUND 544 PM CDT
OCHEYEDAN                AROUND 551 PM CDT
HARRIS                   AROUND 600 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 bTHE STORM HAS
PASSED.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 5:42 PM CDTSevere Thunderstorm WarningFSDLyon, Sioux33 min
Jul 25, 6:47 PM CDTSevere Thunderstorm WarningFSDClay43 min

Nearby

Severe Thunderstorm Warnings in Iowa, 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.