Alert archive / South Dakota / Tornado Warnings in 1994
Tornado Warning 1, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Apr 25, 1994, 6:37 PM CDT for Lincoln County, Turner County, South Dakota. It was in force for 36 min.
The area
The counties it named.
The facts
- Issued
- Apr 25, 1994, 6:37 PM CDT (23:37 UTC)
- Expired
- Apr 25, 1994, 7:13 PM CDT
- In force
- 36 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Lincoln County, SD, Turner County, SD
The nearest sounding before it
Aberdeen, SD (KHON), launched 12:00Z, 11.6 hours before the alert went out and 213 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 589 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 167 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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
Local storm report, Apr 25, 1:16 PM CDT, 5 hours 21 minutes before
STORM REPORT NATIONAL WEATHER SERVICE HURON SD 115 PM CDT MON APR 25 1994 STORM DATA FOR APR 25 1994 TIME COUNTY...LOCATION CHARACTER OF STORM...DAMAGE 538 AM CDT GRANT VCO...9 SW MARVIN 3/4 INCH HAIL...NWS SPOTTER STOREY
Special weather statement, Apr 25, 2:18 PM CDT, 4 hours 19 minutes before
IAZ013-020-021-031-032-043-NEZ013>015-SDZ071-252015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 217 PM CDT MON APR 25 1994 ...A TORNADO WATCH IS IN EFFECT WEST OF SIOUX CITY... A TORNADO WATCH HAS BEEN ISSUED FOR SOUTHEAST SOUTH DAKOTA AND NORTHEAST NEBRASKA. THE WATCH IS IN EFFECT UNTIL 10 PM THIS EVENING. ALTHOUGH NO THUNDERTORMS ARE OCCURING IN THE AREA AT THE PRESENT TIME CONDITIONS ARE FAVAROBLE FOR STRONG THUNDERSTORMS TO DEVELOP VERY QUICKLY. THE THUNDERSTORMS THAT DO DEVELOPE WILL HAVE THE CAPABILITY OF PRODUCING TORNADOES. KEEP MONITORING NOAA WEATHER RADIO...LOCAL TELEVISION STATIONS AND RADIO STATIONS FOR THE LATEST WEATHER DEVELOPMENTS. HUMPHREY
Special weather statement, Apr 25, 3:03 PM CDT, 3 hours 34 minutes before
IAZ013-020-021-031-032-043-NEZ013>015-SDZ071-252115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 302 PM CDT MON APR 25 1994 ...A TORNADO WATCH IS IN EFFECT FOR PARTS OF THE AREA... A TORNADO WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES IN THE SIOXLAND AREA...UNION IN SOUTH DAKOTA...DIXON...DAKOTA AND THURSTON IN NEBRASKA AND SIOUX IN IOWA. ALTHOUGH NO THUNDERTORMS WERE OCCURING IN THE WATCH AREA...CONDITIONS ARE RIPE FOR RAPID DEVELOPMENT OF SEVERE WEATHER. TORNADOES...LARGE HAIL AND DAMAGING WINDS ARE ALL POSSIBLE WITH DEVELOPING THUNDERSTORMS THIS AFTERNOON AND EVENING. KEEP MONITORING NOAA WEATHER RADIO...LOCAL TELEVISION STATIONS AND RADIO STATIONS FOR THE LATEST WEATHER DEVELOPMENTS. HUMPHREY
Special weather statement, Apr 25, 3:07 PM CDT, 3 hours 30 minutes before
IAZ013-020-021-031-032-043-NEZ013>015-SDZ071-252115- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE SIOUX CITY IA 306 PM CDT MON APR 25 1994 ...A TORNADO WATCH IS IN EFFECT FOR PARTS OF THE AREA... A TORNADO WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES IN THE SIOUXLAND AREA...UNION IN SOUTH DAKOTA...DIXON...DAKOTA AND THURSTON IN NEBRASKA AND SIOUX IN IOWA. ALTHOUGH NO THUNDERTORMS WERE OCCURING IN THE WATCH AREA...CONDITIONS ARE RIPE FOR RAPID DEVELOPMENT OF SEVERE WEATHER. TORNADOES...LARGE HAIL AND DAMAGING WINDS ARE ALL POSSIBLE WITH DEVELOPING THUNDERSTORMS THIS AFTERNOON AND EVENING. KEEP MONITORING NOAA WEATHER RADIO...LOCAL TELEVISION STATIONS AND RADIO STATIONS FOR THE LATEST WEATHER DEVELOPMENTS. HUMPHREY ...CORRECTED
Special weather statement, Apr 25, 4:12 PM CDT, 2 hours 25 minutes before
IAZ013-020-021-031-032-043-NEZ013>015-SDZ071-252215- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE SIOUX CITY IA 411 PM CDT MON APR 25 1994 ...STRONG THUNDERSTORMS WERE MOVING TOWARD NORTHEAST NEBRASKA... AT 410 PM CDT STRONG THUNDERSTORMS WERE MOVING NORTHEAST FROM CENTRAL NEBRASKA. THE STORMS WILL BE ENTERING DIXON...THURSTON AND DAKOTA COUNTIES AROUND 6 PM. THESE COUNTIES ARE UNDER A TORNADO WATCH UNTIL 10 PM SO PEOPLE IN THESE AREAS SHOULD BE READY TO TAKE SHELER IF THREATENING WEATHER APPROACHES. THE ATMOSPHERE IS RIPE FOR EXPLOSIVE THUNDERSTORM DEVELOPMENT SO BE ON THE LOOKOUT FOR RAPIDLY CHANGING WEATHER. MONITOR NOAA WEATHER RADIO...LOCAL TELEVISION AND RADIO STATIONS FOR THE LATEST WEATHER INFORMATION. HUMPHREY
Special weather statement, Apr 25, 5:21 PM CDT, 1 hour 16 minutes before
IAZ013-020-021-031-032-043-NEZ013>015-SDZ071-252315- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE SIOUX CITY IA 520 PM CDT MON APR 25 1994 ...STRONG THUNDERSTORMS WILL MOVE INTO THE AREA... AT 518 PM CDT STRONG THUNDERSTORMS WERE LOCATED SOUTH OF SIOUX CITY OR FROM BURT COUNTY NEBRASKA TO MONONA COUNTY IOWA. MOVEMENT WAS NORTHWEST AT 40 MILES AN HOUR. THE THUNDERSTORMS WILL REACH PENDER AND THURSTON NEBRASKA AND MAPLETON IOWA BY 615 PM. THE STORMS WILL LIKELY PRODUCE HAIL AND STRONG WINDS. IF THREATENING WEATHER APPROACHES YOU SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFETY. HOPPES
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 5:41 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 49 min |
| Apr 25, 6:33 PM CDT | Severe Thunderstorm Warning | FSD | Union | 57 min |
| Apr 25, 6:53 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 52 min |
Nearby
Tornado Warnings in South Dakota, 1994Every tornado warning in 1994Tornadoes in 1994
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.