Alert archive / South Dakota / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 21, NWS Rapid City, SD

June 18, 1992Pennington County, South Dakota

NWS Rapid City, SD issued this severe thunderstorm warning at Jun 18, 1992, 7:51 PM MDT for Pennington County, South Dakota. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1992, 7:51 PM MDT (01:51 UTC)
Expired
Jun 18, 1992, 8:45 PM MDT
In force
54 min
Issued by
NWS Rapid City, SD
Area
Whole counties

County Pennington County, SD

The nearest sounding before it

Rapid City, SD (KRAP), launched 00:00Z, 1.9 hours before the alert went out and 9 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, Rapid City, SD at 00:00Z on 1992-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 256 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, Rapid City, SD at 00:00Z on 1992-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
256 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
1961 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRAP 190152
SVRRAP
SDC103-190245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RAPID CITY SD
751 PM MDT THU JUN 18 1992
 
THE NATIONAL WEATHER SERVICE IN RAPID CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  845 PM MDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN WEST CENTRAL SOUTH DAKOTA
 
   ...EASTERN PENNINGTON COUNTY
 
THE SEVERE THUNDERSTORM WHICH PASSED OVER ELLSWORTH AIR FORCE BASE A FEW
MINUTES AFTER 7 PM IS MOVING ACROSS CENTRAL PENNINGTON COUNTY INTO
EASTERN EASTERN PENNINGTON COUNTY. TOWNS EFFECTED WILL BE NEW UNDERWOOD
AND OWANKA WASTA AND WALL.
 
 
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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, Jun 18, 4:12 PM MDT, 3 hours 39 minutes before
SDZ001>002-006>009-014-182300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY  SD
410 PM MDT THU JUN 18 1992

AT 405 PM MDT THUNDERSTORMS WERE MOVING SOUTHEAST ACROSS FAR EASTERN
PENNINGTON AND NORTHERN SHANNON COUNTIES OF SOUTH DKAOTA...ABOUT 30 MILES
EAST THROUGH SOUTHEAST OF RAPID CITY.

ELSEWHERE WIDELY SCATTERED LIGHT RAIN SHOWERS ROAMED EASTWARD FROM THE
WYOMING...MONTANA...SOUTH DAKOTA BORDERS NORTHWEST OF RAPID CITY...TO
TH0E MISSOURI RIVER WEST OF PIERRE.

NO SEVERE WEATHER HAS BEEN REPORTED TO THE NATIONAL WEATHER SERVICE AS
OF 410 PM MDT.

REED
Special weather statement, Jun 18, 6:34 PM MDT, 1 hour 17 minutes before
SDZ001>002-006>009-014-190130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY  SD
625 PM MDT THU JUN 18 1992

AT 605 PM MDT THUNDERSTORMS WERE MOVING EAST ACROSS LAWRENCE AND MEADE
COUNTIES FROM THE SOUTHEAST EDGE OF STURGIS TO THE CHEYENNE RIVER
SOUTHEAST OF UNION CENTER.  THE THUNDERSTORMS HAVE INCREASED IN
INTENSITY DURING THE PAST HOUR AND ARE MOVING EAST AT 15 TO 20 MPH.

ONE OF THESE THUNDERSTORMS DROPED PEASIZED HAIL AROUND 6 PM AT UNION
CENTER ALONG WITH HEAVY RAIN AND GUSTY WINDS.

BRIEF HEAVY RAIN AND GUSTY WINDS ALONG WITH SMALL HAIL CAN BE EXPECTED
WITH THESE THUNDERSTORMS.  IT IS POSSIBLE SOME LARGER HAIL MAY FALL
IN SOME SMALL AREAS.  THE MOST DANGER WITH THE TFHUNDERSTORM IS THE
DEADLY LIGHTNING.  IF IN THE PATH OF THESE THUNDERSTORMS MOVE INTO
A STURDY BUILDING UNTILL THEY PASS.

GOSSARD

The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 7:01 PM MDTSevere Thunderstorm WarningUNRPennington29 min
Jun 18, 7:11 PM MDTSevere Thunderstorm WarningUNRPennington49 min
Jun 19, 3:22 PM MDTSevere Thunderstorm WarningUNRCuster, Pennington53 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1992Every severe thunderstorm warning in 1992

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.