Alert archive / South Dakota / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 20, NWS Sioux Falls, SD

July 9, 1995Turner County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 9, 1995, 11:47 PM CDT for Turner County, South Dakota. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Jul 9, 1995, 11:47 PM CDT (04:47 UTC)
Expired
Jul 10, 1995, 12:15 AM CDT
In force
28 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Turner County, SD

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 4.8 hours before the alert went out and 203 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 00:00Z on 1995-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1363 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 00:00Z on 1995-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
1363 J/kg
Mixed-layer CIN
-173 J/kg
Mixed-layer LCL
1620 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 100449 RRA
SVRFSD
SDC125-100515-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1147 PM CDT SUN JUL 9 1995
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1215 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST SOUTH DAKOTA
 
   ...NORTHERN TURNER COUNTY
 
AT 1145 PM CDT RADAR SHOWED A SEVERE THUNDERSTORM 30 MILES WEST OF SIOUX
FALLS NEAR DOLTON SD MOVING SOUTHEAST AT 25 MPH.
 
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.
 
WILLIAMS

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, Jul 9, 11:00 PM CDT, 47 minutes before
SDZ004>011-016>023-100500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1100 PM CDT SUN JUL 9 1995

...SEVERE THUNDERSTORM WATCH CANCELLED FAR NORTHEAST SOUTH DAKOTA BUT
CONTINUES UNTIL MIDNIGHT FROM ABERDEEN AND HURON WEST TO THE MISSOURI
RIVER...

SEVERE THUNDERSTORM WATCH NUMBER 754 HAS BEEN CANCELLED FOR THE
NORTHEAST CORNER OF SOUTH DAKOTA BUT CONTINUED UNTIL MIDNIGHT CDT
FROM ABERDEEN AND HURON WEST TO LAKE OAHE. SCATTERED THUNDERSTORMS
CONTINUED TO DEVELOP LATE THIS EVENING JUST NORTH AND NORTHWEST OF THIS
AREA AND MAY CONTINUE TO BE A THREAT TO AND PAST MIDNIGHT.

WILLIAMS
Special weather statement, Jul 9, 11:05 PM CDT, 42 minutes before
SDZ004>011-016>023-100500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1100 PM CDT SUN JUL 9 1995

...SEVERE THUNDERSTORM WATCH CANCELLED FAR NORTHEAST SOUTH DAKOTA BUT
CONTINUES UNTIL MIDNIGHT FROM ABERDEEN AND HURON WEST TO THE MISSOURI
RIVER...

SEVERE THUNDERSTORM WATCH NUMBER 754 HAS BEEN CANCELLED FOR THE
NORTHEAST CORNER OF SOUTH DAKOTA BUT CONTINUED UNTIL MIDNIGHT CDT
FROM ABERDEEN AND HURON WEST TO LAKE OAHE. SCATTERED THUNDERSTORMS
CONTINUED TO DEVELOP LATE THIS EVENING JUST NORTH AND NORTHWEST OF THIS
AREA AND MAY CONTINUE TO BE A THREAT TO AND PAST MIDNIGHT.

WILLIAMS

Nearby

Severe Thunderstorm Warnings in South Dakota, 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.