Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 12, NWS Sioux Falls, SD

June 7, 1995Dickinson County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 7, 1995, 2:50 AM CDT for Dickinson County, Iowa. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Jun 7, 1995, 2:50 AM CDT (07:50 UTC)
Expired
Jun 7, 1995, 3:30 AM CDT
In force
40 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Dickinson County, IA

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.8 hours before the alert went out and 205 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 1995-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 433 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 1995-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
433 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
962 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 070751 RRA
SVRFSD
IAC059-070830-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
250 AM CDT WED JUN 7 1995
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST IOWA
 
   ...DICKINSON COUNTY
 
AT 250 AM CDT RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS 60 MILES EAST
OF SIOUX FALLS NEAR HARRIS IOWA TO 60 MILES SOUTHEAST OF SIOUX FALLS
NEAR MAY CITY IOWA. THE LINE WAS MOVING EAST AT 45 MPH.
 
BEFORE 330 AM CDT THESE THUNDERSTORMS WILL AFFECT LAKE PARK... SPIRIT
LAKE AND MILFORD IOWA.
 
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.
 
BLOOM

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, 5:44 AM CDTSevere Thunderstorm WarningFSDWoodbury31 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.