Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 40, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 12, 1994, 6:11 PM CDT for Jackson County, Minnesota. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1994, 6:11 PM CDT (23:11 UTC)
- Expired
- Jun 12, 1994, 7:15 PM CDT
- In force
- 64 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Jackson County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 11.2 hours before the alert went out and 180 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
- 7 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 1636 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS1 KFSD 122312 RRA SVRFSD MNC063-130015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 611 PM CDT SUN JUN 12 1994 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHWEST MINNESOTA ...JACKSON COUNTY AT 608 PM CDT A SEVERE THUNDERSTORM WAS LOCATED 60 MILES EAST OF SIOUX FALLS NEAR WORTHINGTON MINNESOTA. AT 605 PM GOLF BALL SIZE HAIL WAS REPORTED IN WORTHINGTON. THE STORM WAS MOVING EAST AT 20 MPH AND WILL AFFECT OKABENA...SPAFFORD AND JACKSON. 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.
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, Jun 12, 4:42 PM CDT, 1 hour 29 minutes before
SDZ037-038-052-122235- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 440 PM CDT SUN JUN 12 1994 ...TORNADO WATCH FOR MUCH OD CENTRAL AND EASTERN SOUTH DAKOTA UNTIL 1000 PM CDT... AT 425 PM CDT...AN ISOLATED SEVERE THUNDERSTORM CONTINUED OVER A SMALL PART OF EAST CENTRAL SOUTH DAKOTA. THIS STORM WAS LOCATED 10 MILES SOUTHWEST OF WESSINGTON AND INDICATED A POSSIBLE TORNADO AT 405 PM. AT 437 PM A WEATHER SPOTTER IN SOUTHERN HAND COUNTY REPORTED GOLF BALL SIZE HAIL AND AN ESTIMATED 60 MPH WIND WITH THIS STORM. PERSONS IN SOUTHWEST BEADLE COUNTY SHOULD SEEK SHELTER IMMEDIATELY AS THIS IS A DANGEROUS STORM. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR. PF&EIFFER
Special weather statement, Jun 12, 4:58 PM CDT, 1 hour 13 minutes before
SDZ040-122300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 457 PM CDT SUN JUN 12 1994 ...STRONG THUNDERSTORM MOVING TOWARDS BROOKINGS COUNTY OF SOUTH DAKOTA... AT 455 PM CDT RADAR INDICATED A STRONG THUNDERSTORM 35 MILES NORTHWEST OF BROOKINGS SOUTH DAKOTA. THIS STORM WAS MOVING SOUTHEAST AT 25 MPH AND WILL BEGIN TO AFFECT NORTHERN BROOKINGS COUNTY BY 530 PM CDT. THIS STORM WILL PRODUCE SMALL HAIL...GUSTY WINDS AND HEAVYp RAINS. PERSONS IN BROOKINGS COUNTY SHOULD KEEP ABREAST OF THIS STORM AND BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. A TORNADO WATCH IS ALSO IN EFFECT UNTIL 10 PM CDT.
Special weather statement, Jun 12, 5:08 PM CDT, 1 hour 3 minutes before
MNZ071-072-080-081-089-090-097-098-122310- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 506 PM CDT SUN JUN 12 1994 ...STRONG THUNDERSTORMS MOVE INTO SOUTHWEST MINNESOTA... AT 505 PM CDT RADAR INDICATED THAT STRONG THUNDERSTORMS MOVED INTO SOUTHWEST MINNESOTA. THE STRONGEST STORMS WERE LOCATED ACROSS PIPESTONE AND ROCK COUNTIES. STORMS WERE MOVING SOUTHEAST AT 20 MILES AN HOUR. THESE STORMS MAY PRODUCE BRIEF HEAVY RAIN...GUSTY WINDS...AND SMALL HAIL. PEOPLE IN PIPESTONE...MARSHALL...WORTHINGTON...AND OTHER TOWNS IN SOUTHWEST MINNESOTA SHOULD MONITOR NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST ON THESE STORMS OVER THE NEXT FEW HOURS. MENTZER
Special weather statement, Jun 12, 5:16 PM CDT, 55 minutes before
SDZ062-122320- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 516 PM CDT SUN JUN 12 1994 ...STRONG THUNDERSTORM DEVELOPING OVER NORTHWEST MINNEHAHA COUNTY... AT 510 PM CDT RADAR SHOWED A STRONG THUNDERSTORM OVER NORTHWEST MINNEHAHA COUNTY OF SOUTHEAST SOUTH DAKOTA. THE STORM WAS LOCATED 20 MILES NORTHWEST OF SIOUX FALLS NEAR COLTON. MOVEMENT WAS TO THE EAST AT 20 MPH. THIS STORM WILL AFFECT NORTHERN MINNEHAHA COUNTY THROUGH 545 PM CDT. SMALL HAIL...HEAVY RAINS AND GUSTY WINDS CAN BE EXPECTED WITH THIS STORM. PERSONS IN NORTHERN MINNEHAHA COUNTY SHOULD KEEP ABREAST OF THIS STORM AND BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. A TORNADO WATCH IS ALSO IN EFFECT UNTIL 10 PM CDT.
Special weather statement, Jun 12, 5:40 PM CDT, 31 minutes before
SDZ022-023-038-039-053-054-122335- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 540 PM CDT SUN JUN 12 1994 ...TORNADO WATCH FOR MUCH OF CENTRAL AND EASTERN SOUTH DAKOTA UNTIL 1000 PM CDT... AT 530 PM CDT...ISOLATED SEVERE THUNDERSTORMS CONTINUED OVER A SMALL PART OF EAST CENTRAL SOUTH DAKOTA. THESE STORMS WERE LOCATED 15 MILES SOUTHEAST OF HURON AND 20 MILES SOUTH OF WATERTOWN AND HAVE PRODUCE LARGE HAIL AND STRONG DAMAGING WINDS. PERSONS IN SOUTHEAST BEADLE...NORTHERN SANBORN...SOUTHEAST HAMLIN AND SOUTHERN DEUEL COUNTIES SHOULD REMAIN ALERT FOR THREATENING WEATHER AND SEEK SHELTER IMMEDIATELY IF SIGHTED. MOVEMENT WAS EAST AT 30 MILES AN HOUR. PFEIFFER
Special weather statement, Jun 12, 5:43 PM CDT, 28 minutes before
SDZ022-023-038-039-053-054-122335- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HURON SD 540 PM CDT SUN JUN 12 1994 ...TORNADO WATCH FOR MUCH OF CENTRAL AND EASTERN SOUTH DAKOTA UNTIL 1000 PM CDT... AT 530 PM CDT...ISOLATED SEVERE THUNDERSTORMS CONTINUED OVER A SMALL PART OF EAST CENTRAL SOUTH DAKOTA. THESE STORMS WERE LOCATED 15 MILES SOUTHEAST OF HURON AND 20 MILES SOUTH OF WATERTOWN AND HAVE PRODUCE LARGE HAIL AND STRONG DAMAGING WINDS. PERSONS IN SOUTHEAST BEADLE...NORTHERN SANBORN...SOUTHEAST HAMLIN AND SOUTHERN DEUEL COUNTIES SHOULD REMAIN ALERT FOR THREATENING WEATHER AND SEEK SHELTER IMMEDIATELY IF SIGHTED. MOVEMENT WAS EAST AT 30 MILES AN HOUR. PFEIFFER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 5:53 PM CDT | Tornado Warning | FSD | Rock | 37 min |
| Jun 12, 6:31 PM CDT | Severe Thunderstorm Warning | FSD | Nobles | 59 min |
| Jun 12, 6:51 PM CDT | Severe Thunderstorm Warning | FSD | Rock | 69 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1994Every severe thunderstorm warning 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.