Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 28, NWS Sioux Falls, SD

July 14, 1995Woodbury County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 14, 1995, 7:50 PM CDT for Woodbury County, Iowa. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Jul 14, 1995, 7:50 PM CDT (00:50 UTC)
Expired
Jul 14, 1995, 8:20 PM CDT
In force
30 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Woodbury County, IA

The radar

The Omaha radar (KOAX), 122 km from the middle of the area, began a volume at 00:53 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

Omaha, NE (KOAX), launched 00:00Z, 0.8 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 1995-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1993 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 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 1995-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.1939Sfc1 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
1993 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
2102 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
96 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 
WUUS1 KFSD 150051 RRA
SVRFSD
IAC193-150120-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
750 PM CDT FRI JUL 14 1995

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 820 PM CDT (720 PM MDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWEST IOWA

   ...WESTERN WOODBURY COUNTY IA
 
AT 745 PM CDT...A SEVERE THUNDERSTORM WAS DETECTED BY SIOUX FALLS
DOPPLER RADAR 5 MILES SOUTHWEST OF THE SIOUX CITY AIRPORT MOVING EAST
AT 35 MPH.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
SERGEANT BLUFF...
SIOUX CITY...
SPRINGDALE               BY 800 PM CDT
BRONSON...
LAWTON                   BY 815 PM CDT
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.

RUBY

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

Local storm report, Jul 14, 4:00 PM CDT, 3 hours 50 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE HURON SD
400 PM CDT FRI JUL 14 1995

STORM DATA FOR THU JUL 13 1995

TIME            COUNTY...LOCATION          CHARACTER OF STORM...DAMAGE

1100 PM CDT      HUGHES CO...BLUNT            TREE DAMAGE...THREE INCH
                                              BRANCHES BROKEN

BETWEEN 1130 PM  HAND CO...ST. LAWRENCE       LARGE TREES UPROOTED...
AND MIDNIGHT               12 N               GARAGE BLOWN DOWN

ABOUT 10 PM CDT  JONES CO...OKATON            SMALL BRANCHES DOWN...
                                              HAIL DAMAGE TO CROPS.

SPRINGER
Local storm report, Jul 14, 4:05 PM CDT, 3 hours 45 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE HURON SD
400 PM CDT FRI JUL 14 1995

STORM DATA FOR THU JUL 13 1995

TIME            COUNTY...LOCATION          CHARACTER OF STORM...DAMAGE

1100 PM CDT      HUGHES CO...BLUNT            TREE DAMAGE...THREE INCH
                                              BRANCHES BROKEN

BETWEEN 1130 PM  HAND CO...ST. LAWRENCE       LARGE TREES UPROOTED...
AND MIDNIGHT               12 N               GARAGE BLOWN DOWN

ABOUT 10 PM CDT  JONES CO...OKATON            SMALL BRANCHES DOWN...
                                              HAIL DAMAGE TO CROPS.

SPRINGER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 8:48 PM CDTSevere Thunderstorm WarningFSDWoodbury32 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; radar from the NEXRAD Level II archive.