Alert archive / Iowa / Tornado Warnings in 1992
Tornado Warning 26, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jul 9, 1992, 6:38 PM CDT for Sioux County, Iowa. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Jul 9, 1992, 6:38 PM CDT (23:38 UTC)
- Expired
- Jul 9, 1992, 7:15 PM CDT
- In force
- 37 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Sioux County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 12:00Z, 11.6 hours before the alert went out and 197 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1585 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 146 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 092340 TORFSD IAC167-100015- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 638 PM CDT THU JUL 9 1992 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES... IN NORTHWEST IOWA ...EASTERN SIOUX COUNTY AT 635 PM CDT A TORNADO WAS REPORTED ON THE GROUND 2 MILES WEST OF SIOUX CENTER MOVING EAST. TAKE COVER IMMEDIATELY. DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT. WILLIAMS
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, Jul 9, 5:09 PM CDT, 1 hour 29 minutes before
SDZ015-092245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 509 PM CDT THU JUL 9 1992 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM CDT FOR SOUTHCENTRAL SOUTH DAKOTA... AT 505 PM CDT RADAR INDICATED AN INTENSE THUNDERSTORM 20 MILES WEST OF MISSION SOUTH DAKOTA IN NORTHERN TODD COUNTY OF SOUTHCENTRAL SOUTH DAKOTA. THIS STORM WAS MOVING EAST AT 30 MPH. THIS THUNDERSTORM IS CAPABLE OF PRODUCING HEAVY RAINS...HAIL AND GUSTY WINDS. PERSONS IN NORTHERN TODD COUNTY SHOULD BE ALERT TO THE THE POSSIBLITY OF SEVERE WEATHER IN THEIR AREA AND MOVE IMMEDIATELY TO A REINFORCED SHELTER IF SEVERE WEATHER IS SIGHTED OF IF A WARNING IS ISSUED.
Special weather statement, Jul 9, 5:16 PM CDT, 1 hour 22 minutes before
SDZ012-018-020-MNZ017-IAZ002-092315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 516 PM CDT THU JUL 9 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 9 PM CDT... AT 500 PM CDT...RADAR INDICATED STRONG THUNDERSTORMS MOVING THROUGH SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND EXTREME NORTHWEST IOWA. THE HEAVIEST STORMS WERE LOCATED 30 MILES SOUTHWEST OF SIOUX FALLS NEAR PARKER SOUTH DAKOTA AND 35 MILES EAST OF SIOUX FALLS NEAR ELLSWORTH MINNESOTA. VERY HEAVY RAINS...GUSTY WINDS...AND POSSIBLE HAIL ARE POSSIBLE WITH THESE STORMS AS THEY MOVE NORTHEAST AT 30 MPH. THESE STORMS WERE PART OF A LARGER AREA OF SHOWERS AND STORMS...90 MILES WIDE...WHICH EXTENDED FROM YANKTON SOUTH DAKOTA TO REDWOOD FALLS MINNESOTA. HEAVY RAINS WERE SCATTERED IN THIS AREA...MAINLY SOUTH OF INTERSTATE 90. THE ENTIRE AREA WAS MOVING NORTHEAST AT 30 MPH. MORE STORMS WERE DEVELOPING IN NORTHEAST NEBRASKA...AND WILL MOVE INTO SOUTH DAKOTA DURING THE EVENING HOURS. AS THE HEAVY RAINS CONTINUE TO FALL...AREAS OF FLOODING ARE POSSIBLE. NO SEVERE WEATHER HAS YET TO BE REPORTED WITH THESE STORMS. HOWEVER... PEOPLE IN SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. GEELHART
Special weather statement, Jul 9, 5:42 PM CDT, 56 minutes before
SDZ017-092315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 540 PM CDT THU JUL 9 1992 ...A TORNADO WATCH UNTIL 9 PM CDT FOR SOUTHEAST SOUTH DAKOTA... ....SEVERE THUNDERSTORM WATCH UNTIL 9 PM CDT FOR SOUTHCENTRAL SOUTH DAKOTA... AT 535 PM CDT...RADAR INDICATED A INTENSE THUNDERSTORM 30 MILES SOUTH/ SOUTHWEST OF MITCHELL SOUTH DAKOTA IN SOUTHEAST DOUGLAS COUNTY. THE STORM WAS MOVING EAST AT 30 MPH AND WILL AFFECT SOUTHERN HUTCHINSON COUNTY THROUGH 630 PM CDT. THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINS...SMALL HAIL AND GUSTY WINDS. NO SEVERE WEATHER HAS YET TO BE REPORTED...HOWEVER...PEOPLE IN HUTCHINSOM COUNTY SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Jul 9, 6:01 PM CDT, 37 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-092335- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 601 PM CDT THU JUL 9 1992 ...A TORNADO WATCH IS IN EFFECT FOR THE SIOUXLAND AREA UNTIL 9PM... AT 6 PM A THUNDERSTORM PRODUCING HEAVY RAIN AND POSSIBLY SMALL HAIL WAS 40 MILES NORTHWEST OF SIOUX CITY...NEAR ALCESTER SOUTH DAKOTA. MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. THIS STORM WILL MOVE NORTHEAST OUT OF THE ALCESTER AREA BYx 630 PM AND TRACK ALONG THE ROCK RIVER OF EXTREME NORTHWEST IOWA. OTHER THUNDERSTORMS OVER NORTHEAST NEBRASKA WILL ENTER THE WEST PART OF THE SIOUXLAND AREA BY 7 PM. DROZD
Special weather statement, Jul 9, 6:19 PM CDT, 19 minutes before
SDZ012-018>-020-MNZ017-IAZ002-100015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 617 PM CDT THU JUL 9 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 9 PM CDT FOR SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT FOR PORTIONS OF SOUTH CENTRAL SOUTH DAKOTA... AT 600 PM CDT...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINS MOVING THROUGH SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA. THE HEAVIEST STORMS WERE LOCATED IN SOUTHWEST HUTCHINSON COUNTY OF SOUTH DAKOTA. ANOTHER THUNDERSTORM WITH VERY HEAVY RAINS WAS MOVING ACROSS LAKE FRANCIS CASE TO THE WEST OF PLATTE. THESE STORMS ARE MOVING NORTHEAST AT 30 MPH. THE GENERAL AREA OF STORMS EXTENDED EAST OF A LINE FROM BROOKINGS TO YANKTON SOUTH DAKOTA. THE RAIN AREA EXTENDED AS FAR EAST AS JACKSON AND REDWOOD FALLS MINNESOTA. THE AREA WAS MOVING NORTHEAST AT 30 MPH. < A BRIEF RESPITE FROM THE RAIN WILL BE MOVING THROUGH DURING THE NEXT COUPLE OF HOURS. HOWEVER...MORE THUNDERSTORMS ARE DEVELOPING IN NORTHEASTERN NEBRASKA. THESE STORMS WERE MOVING NORTHEAST AND WILL BE MOVING INTO EXTREME SOUTHEAST SOUTH DAKOTA...AFFECTING POINTS ALONG THE MISSOURI RIVER...BY 700 PM. AS THE STORMS CONTINUE TO MOVE THROUGH...FLOODING MAY BEGIN TO BE A PROBLEM. NO SEVERE WEATHER HAS YET TO BE REPORTED WITH THESE STORMS. HOWEVER... PEOPLE IN SOUTHEAST SOUTH DAKOTA...SOUTHWEST MINNESOTA...AND NORTHWEST IOWA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. GEELHART
Special weather statement, Jul 9, 6:34 PM CDT, 4 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-100005- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 634 PM CDT THU JUL 9 1992 ...A TORNADO WATCH IS IN EFFECT FOR THE SIOUXLAND AREA UNTIL 9PM... AT 630 PM THUNDERSTORMS PRODUCING HEAVY RAIN AND POSSIBLY SMALL HAIL WERE 45 MILES NORTHWEST OF SIOUX CITY...NEAR BERESFORD SOUTH DAKOTA. THUNDERSTORMS WILL CONTINUE TO MOVE NORTHEAST ACROSS THIS REGION ALONG HIGHWAY 46 THROUGH 730 PM. MEANWHILE...SCATTERED SHOWERS AND THUNDERSTORMS WERE 60 MILES NORTHEAST OF SIOUX CITY...NEAR SANBORN IOWA. STILL OTHER THUNDERSTORMS WERE 30 MILES WEST OF SIOUX CITY...NEAR DIXON NEBRASKA. MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. DROZD
Nearby
Tornado Warnings in Iowa, 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.