Alert archive / South Dakota / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 77, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 18, 1992, 4:28 PM CDT for Tripp County, South Dakota. It was in force for 32 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 18, 1992, 4:28 PM CDT (21:28 UTC)
- Expired
- Jul 18, 1992, 5:00 PM CDT
- In force
- 32 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Tripp County, SD
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 5:00 PM CDT | Hail 2.5 | Tripp, SD |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Aberdeen, SD (KHON), launched 12:00Z, 9.5 hours before the alert went out and 209 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 182127 SVRFSD SDC123-182200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 428 PM CDT SAT JUL 18 1992 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES... IN SOUTH CENTRAL SOUTH DAKOTA ...NORTHEASTERN TRIPP COUNTY AT 425 PM CDT GOLFBALL SIZE HAIL WAS REPORTED AT WINNER SOUTH DAKOTA BY THE TRIPP COUNTY SHERIFF. THE STORMS WERE MOVING TO THE EAST AT 10 MPH. THIS WARNING INCLUDES THE TOWNS OF WINNER AND HAMILL WHICH IS ABOUT 10 MILES NORTHEAST OF WINNER. PEOPLE NEAR THE STORM SHOULD MOVE INSIDE A STRONG BUILDING AWAY FROM WINDOBWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED. MOTORISTS...DON'T DRIVE INTO FLOODED 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, Jul 18, 4:02 PM CDT, 26 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, 8 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, 5:07 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.