Alert archive / Minnesota / Tornado Warnings in 1993
Tornado Warning 7, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at May 7, 1993, 6:43 PM CDT for Lyon County, Minnesota. It was in force for 47 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
- May 7, 1993, 6:43 PM CDT (23:43 UTC)
- Expired
- May 7, 1993, 7:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Lyon County, MN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 7, 7:20 PM CDT | Tornado F1 | Cottonwood, MN | A short-lived tornado destroyed a home and injured four people. |
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
Minneapolis, MN (KSTC), launched 12:00Z, 11.7 hours before the alert went out and 184 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
- 634 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 236 m²/s²
- 0-3 km storm-relative helicity
- 209 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 072342 TORFSD MNC083-080030- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 643 PM CDT FRI MAY 7 1993 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 730 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHWEST MINNESOTA ...LYON COUNTY AT 635 PM CDT A TORNADO WAS REPORTED NEAR AMIRET MINNESOTA OR ABOUT 10 MILES SOUTHEAST OF MARSHALL. NUMEROUS REPORTS OF FUNNEL CLOUDS AND TORNADOES TOUCHING DOWN IN SOUTHEAST LYON COUNTY HAVE ALSO BEEN MADE IN THE TRACY AND GARVIN AREAS OR ABOUT 15 TO 20 MILES SOUTHEAST OF MARSHALL MN. PERSONS IN GARVIN...TRACY AND AMIRET SHOULD TAKE COVER IMMEDIATELY. THE FUNNEL CLOUDS AND TORNADOES WERE MOVING TO THE NORTHEAST AT 25 MILES AN HOUR AND WILL MOVE INTO THE CITY OF DUDELY BY 7 PM CDT. A TORNADO WATCH IS IN EFFECT FOR PARTS OF SOUTHEAST SOUTH DAKOTA... NORTHWEST IOWA AND SOUTHWEST MINNESOTA. DO NOT USE YOU>R 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. &
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, May 7, 5:08 PM CDT, 1 hour 35 minutes before
IAZ020-031-043-NEZ094-095-096-SDZ066-072300- SPECIAL WEATHER STATEMENT...CORRECTED TYPO NATIONAL WEATHER SERVICE SIOUX CITY IA 508 PM CDT FRI MAY 7 1993 ...THE THUNDERSTORMS HAVE MOVED OUT OF THE AREA... AT 500 PM CDT THE STRONG THUNDERSTORM THAT HAD BEEN NEAR BERESFORD SOUTH DAKOTA IN UNION COUNTY HAD MOVED NORTH OUT OF THE AREA. ACROSS THE REST OF THE AREA THERE WERE ONLY A FEW SCATTERED LIGHT SHOWERS. CONDITIONS ACROSS THE AREA LATE THIS AFTERNOON ARE SET FOR RAPID DEVELOPMENT OF THUNDERSTORMS. THESE STORMS WILL HAVE THE POTENTIAL TO PRODUCE HEAVY RAIN...DAMAGING WINDS AND LARGE HAIL. TORNADOES COULD ALSO FORM WITH LITTLE OR NO ADVANCED NOTICE. THEREFORE A TORNADO WATCH IS IN EFFECT UNTIL 1000 PM FOR UNION COUNTY SOUTH DAKOTA...DIXON... DAKOTA AND THURSTON COUNTIES IN IOWA AND PLYMOUTH...WOODBURY AND MONONA COUNTIES IN IOWA. IRELAND
Special weather statement, May 7, 5:08 PM CDT, 1 hour 35 minutes before
IAZ020-031-043-NEZ094-095-096-SDZ066-072300- SPECIAL WEATHER STATEMENT...CORRECTED TYPO NATIONAL WEATHER SERVICE SIOUX CITY IA 508 PM CDT FRI MAY 7 1993 ...THE THUNDERSTORMS HAVE MOVED OUT OF THE AREA... AT 500 PM CDT THE STRONG THUNDERSTORM THAT HAD BEEN NEAR BERESFORD SOUTH DAKOTA IN UNION COUNTY HAD MOVED NORTH OUT OF THE AREA. ACROSS THE REST OF THE AREA THERE WERE ONLY A FEW SCATTERED LIGHT SHOWERS. CONDITIONS ACROSS THE AREA LATE THIS AFTERNOON ARE SET FOR RAPID DEVELOPMENT OF THUNDERSTORMS. THESE STORMS WILL HAVE THE POTENTIAL TO PRODUCE HEAVY RAIN...DAMAGING WINDS AND LARGE HAIL. TORNADOES COULD ALSO FORM WITH LITTLE OR NO ADVANCED NOTICE. THEREFORE A TORNADO WATCH IS IN EFFECT UNTIL 1000 PM FOR UNION COUNTY SOUTH DAKOTA...DIXON... DAKOTA AND THURSTON COUNTIES IN IOWA AND PLYMOUTH...WOODBURY AND MONONA COUNTIES IN IOWA. IRELAND
Special weather statement, May 7, 5:30 PM CDT, 1 hour 13 minutes before
SDZ004-005-010-011-012-016-080015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HURON SD 530 PM CDT FRI MAY 7 1993 CENTRAL AND EAST CENTRAL SOUTH DAKOTA ...A TORNADO WATCH IS IN EFFECT UNTIL 10 PM CDT... THUNDERSTORMS...SOME OF WHICH MAY BE SEVERE...ARE EXPECTED TONIGHT AS A LINE MOVES THROUGH THE AREA. VERY HEAVY RAIN AND STRONG GUSTY WIND ARE LIKELY WITH HAIL...DAMAGING WIND...AND TORNADOES POSSIBLE. PERSONS IN OR NEAR THE WATCH AREA NEED TO WATCH FOR SUDDEN CHANGES IN THE WEATHER AND STAY TUNED TO RADIO OR TELEVISION FOR STATEMENTS AND WARNINGS. SPRINGER
Special weather statement, May 7, 5:35 PM CDT, 1 hour 8 minutes before
SDZ004-005-010-011-012-016-080015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HURON SD 530 PM CDT FRI MAY 7 1993 CENTRAL AND EAST CENTRAL SOUTH DAKOTA ...A TORNADO WATCH IS IN EFFECT UNTIL 10 PM CDT... THUNDERSTORMS...SOME OF WHICH MAY BE SEVERE...ARE EXPECTED TONIGHT AS A LINE MOVES THROUGH THE AREA. VERY HEAVY RAIN AND STRONG GUSTY WIND ARE LIKELY WITH HAIL...DAMAGING WIND...AND TORNADOES POSSIBLE. PERSONS IN OR NEAR THE WATCH AREA NEED TO WATCH FOR SUDDEN CHANGES IN THE WEATHER AND STAY TUNED TO RADIO OR TELEVISION FOR STATEMENTS AND WARNINGS. SPRINGER
Special weather statement, May 7, 6:02 PM CDT, 41 minutes before
IAZ020-021-031-032-043-NEZ094-095-096-SDZ066-080000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 602 PM CDT FRI MAY 7 1993 ...SCATTERED THUNDERSTORMS HAVE DEVELOPED IN THE AREA... AT 600 PM A THUNDERSTORM WAS LOCATED 5 MILES NORTH OF KINGSLEY IN PLYMOUTH...OR 25 MILES NORTHEAST OF SIOUX CITY. ANOTHER STORM WAS BETWEEN SOLDIER AND MOORHEAD IN MONONA COUNTY. BOTH STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR AND WERE NOT PRODUCING ANY SEVERE WEATHER. A LINE OF SEVERE STORMS STRETCHED ACROSS CENTRAL NEBRASKA. THIS LINE OF STORMS WILL BEGIN TO APPROACH THE WEST SECTIONS OF THE AREA AROUND 800 PM. A TORNADO WATCH CONTINUES UNTIL 1000 PM FOR DIXON...DAKOTA AND THURSTON COUNTIES IN NEBRASKA...PLYMOUTH...WOODBURY AND MONONA IN IOWA AND UNION IN SOUTH DAKOTA. IRELAND
Special weather statement, May 7, 6:04 PM CDT, 39 minutes before
IAZ020-021-031-032-043-NEZ094-095-096-SDZ066-080000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 602 PM CDT FRI MAY 7 1993 ...SCATTERED THUNDERSTORMS HAVE DEVELOPED IN THE AREA... AT 600 PM A THUNDERSTORM WAS LOCATED 5 MILES NORTH OF KINGSLEY IN PLYMOUTH...OR 25 MILES NORTHEAST OF SIOUX CITY. ANOTHER STORM WAS BETWEEN SOLDIER AND MOORHEAD IN MONONA COUNTY. BOTH STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR AND WERE NOT PRODUCING ANY SEVERE WEATHER. A LINE OF SEVERE STORMS STRETCHED ACROSS CENTRAL NEBRASKA. THIS LINE OF STORMS WILL BEGIN TO APPROACH THE WEST SECTIONS OF THE AREA AROUND 800 PM. A TORNADO WATCH CONTINUES UNTIL 1000 PM FOR DIXON...DAKOTA AND BTHURSTON COUNTIES IN NEBRASKA...PLYMOUTH...WOODBURY AND MONONA IN IOWA AND UNION IN SOUTH DAKOTA. IRELAND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 5:07 PM CDT | Tornado Warning | FSD | Pipestone | 53 min |
| May 7, 5:55 PM CDT | Tornado Warning | FSD | Murray | 50 min |
Nearby
Tornado Warnings in Minnesota, 1993Every tornado warning in 1993Tornadoes in 1993
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.