Alert archive / South Dakota / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 78, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 18, 1992, 5:07 PM CDT for Gregory County, South Dakota. It was in force for 48 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1992, 5:07 PM CDT (22:07 UTC)
- Expired
- Jul 18, 1992, 5:55 PM CDT
- In force
- 48 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Gregory County, SD
The nearest sounding before it
Aberdeen, SD (KHON), launched 12:00Z, 10.1 hours before the alert went out and 200 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
- 12 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 182207 SVRFSD SDC053-182300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 507 PM CDT SAT JUL 18 1992 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES... IN SOUTH CENTRAL SOUTH DAKOTA ...WESTERN GREGORY COUNTY AT 457 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM MOVING FROM EASTERN TRIPP COUNTY JUST WEST OF DALLAS SOUTH DAKOTA OR ABOUT 20 MILES EAST OF WINNER. TOWNS INCLUDED IN THE WARNING ARE DALLAS...GREGORY AND BURKE. THE THUNDERSTORM WAS MOVING TO THE SOUTHEAST AT 15 MPH WILL REACH DALLAS AND BURKE BETWEEN 515 AND 525 PM CDT. 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. DIRCKSEN
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 18, 4:02 PM CDT, 1 hour 5 minutes before
SDZ015-182015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 4 PM CDT SAT JUL 18 1992 ...HEAVY RAIN AND HAIL IN NORTHERN TRIPP COUNTY... A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 415 PM CDT FOR NORTHERN TRIP COUNTY IN SOUTH CENTRAL SOUTH DAKOTA. RADAR CONTINUED TO SHOW A SEVERE THUNDERSTORM ABOUT 20 MILES NORTH OF WINNER AT 355 PM CDT. VERY HEAVY RAIN AND DAMAGING HAIL WILL FALL WITH THIS SEVERE STORM AS IT MOVES EAST AT 15 MPH AND THREATENS THE COMMUNITIES OF IDEAL AND HAMILL. UMLAND
Special weather statement, Jul 18, 4:20 PM CDT, 47 minutes before
SDZ015-182100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 419 PM CDT SAT JUL 18 1992 ...THUNDERSTORM DIMINISHING IN INTENISTY... THE THUNDERSTORM IN NORTHERN TRIP COUNTY WAS DIMINISHING IN INTENSITY BY 415 PM CDT AND WAS NO LONGER SEVERE. THE SEVERE THUNDERSTORM WARNING WILL NOT BE RENEWED FOR NORTHERN TRIPP COUNTY. WINNER RECEIVED PEA SIZE HAIL AT 410 PM CDT. THUNDERSTORMS WILL CONTINUE TO MOVE EAST AT AROUND 15 MPH DROPPING LOCALLY HEAVY RAIN AND SMALL HAIL. DANGEROUS LIGHTNING WILL OCCUR WITH THE THUNDERSTORMS AS THEY MOVE EAST THROUGH NORTHERN TRIP COUNTY BY 5 PM CDT. PEOPLE IN AN NEAR THE COMMUNITIES OF WINNER AND HAMMIL SHOULD BE ALERT AS THESE THUNDER.STORMS MOVE THROUGH THEIR AREA. UMLAND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 3:42 PM CDT | Severe Thunderstorm Warning | FSD | Tripp | 33 min |
| Jul 18, 4:28 PM CDT | Severe Thunderstorm Warning | FSD | Tripp | 32 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.