Alert archive / South Dakota / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 21, NWS Rapid City, SD
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.
- 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
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 7:01 PM MDT | Severe Thunderstorm Warning | UNR | Pennington | 29 min |
| Jun 18, 7:11 PM MDT | Severe Thunderstorm Warning | UNR | Pennington | 49 min |
| Jun 19, 3:22 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 53 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.