Alert archive / South Dakota / Tornado Warnings in 1992
Tornado Warning 31, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Aug 9, 1992, 8:40 PM CDT for Moody County, South Dakota. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Aug 9, 1992, 8:40 PM CDT (01:40 UTC)
- Expired
- Aug 9, 1992, 9:30 PM CDT
- In force
- 50 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Moody County, SD
The nearest sounding before it
Aberdeen, SD (KHON), launched 00:00Z, 1.7 hours before the alert went out and 168 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
- 1762 J/kg
- Mixed-layer CIN
- -208 J/kg
- Mixed-layer LCL
- 1484 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 100140 TORFSD SDC101-100230- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 840 PM CDT SUN AUG 9 1992 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 930 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY... IN EAST CENTRAL SOUTH DAKOTA ...ALL OF MOODY COUNTY AT 839 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM ACROSS CENTRAL MOODY COUNTY NEAR THE TOWN OF EGAN...OR ABOUT 25 MILES SOUTH OF BROOKINGS. A FUNNEL CLOUD WAS ALSO REPORTED NEAR EGAN. RADAR CONTINUES TO SHOW INTENSE DEVELOPMENT WITH THIS STORM. ANOTHER SEVERE THUNDERSTORM WAS 5 MILES NORTHWEST OF FLANDREAU...AND SHOULD MOVE INTO FLANDREAU BY 850 PM CDT. PEOPLE ACROSS MOODY COUNTY SHOULD TAKE COVER IMMEDIATELY. STORMS WERE MOVING SOUTH AT 10 MILES AN HOUR. A TORNADO WATCH IS IN EFFECT FOR PARTS OF SOUTHEAST SOUTH DAKOTA... NORTHWEST IOWA AND SOUTHWEST MINNESOTA. THIS IS A DANGEROUS STORM. MOVE QUICKLY TO UNDERGROUND SHELTER IF AVAILABLE. OTHERWISE...GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR AN AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. MENTZER
What forecasters said that day
The local office's own words before this tornado 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, Aug 9, 8:05 PM CDT, 35 minutes before
IAZ020-021-031-032-043-NEZ094>096-SDZ066-100200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 804 PM CDT SUN AUG 9 1992 ...TORNADO WATCH FOR OBRIEN...PLYMOUTH...AND UNION COUNTIES UNTIL 2 AM MONDAY MORNING... AT 800 PM CDT NO PRECIPITATION WAS LOCATED IN THE SIOUXLAND AREA. THERE IS THE POSSIBILITY THAT SEVERE THUNDERSTORMS MAY DEVELOP IN THE AREA THAT COULD PRODUCE LARGE HAIL...DAMAGING WINDS...AND TORNADOES. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE NEWS MEDIA FOR UPDATES CONCERNING THE SEVERE WEATHER THREAT. IRELAND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:41 PM CDT | Tornado Warning | FSD | Brookings | 34 min |
| Aug 9, 8:02 PM CDT | Tornado Warning | FSD | Moody | 43 min |
| Aug 9, 8:50 PM CDT | Tornado Warning | FSD | Lake | 25 min |
| Aug 9, 9:28 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 47 min |
| Aug 9, 9:46 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha | 44 min |
| Aug 9, 10:20 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 40 min |
| Aug 9, 10:38 PM CDT | Tornado Warning | FSD | Turner | 37 min |
| Aug 9, 11:21 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 54 min |
Nearby
Tornado Warnings in South Dakota, 1992Every tornado warning in 1992Tornadoes 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.