Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 14, NWS Sioux Falls, SD

June 7, 1995Woodbury County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 7, 1995, 5:44 AM CDT for Woodbury County, Iowa. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Jun 7, 1995, 5:44 AM CDT (10:44 UTC)
Expired
Jun 7, 1995, 6:15 AM CDT
In force
31 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Woodbury County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 10.7 hours before the alert went out and 122 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, Omaha, NE at 00:00Z on 1995-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2589 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, Omaha, NE at 00:00Z on 1995-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
2589 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
1343 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 071045 RRA
SVRFSD
IAC193-071115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
544 AM CDT WED JUN 7 1995
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST IOWA
 
   ...EASTERN WOODBURY COUNTY
 
AT 540 AM CDT...SIOUX FALLS DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM 30 MILES SOUTHEAST OF SIOUX CITY NEAR HOLLY SPRINGS.
THE THUNDERSTORM WAS MOVING NORTHEAST AT 40 MPH AND WILL MOVE INTO
ANTHON AND CORRECTIONVILLE BETWEEN 600 AND 615.
 
IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A
REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS
OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY
RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.
 
 
CHAPMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 1:10 AM CDTSevere Thunderstorm WarningFSDLyon, Sioux35 min
Jun 7, 1:48 AM CDTSevere Thunderstorm WarningFSDLyon, Sioux42 min
Jun 7, 2:15 AM CDTSevere Thunderstorm WarningFSDOsceola60 min
Jun 7, 2:50 AM CDTSevere Thunderstorm WarningFSDDickinson40 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.