Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 93, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 18, 1993, 9:04 AM CDT for Wabasha County, Winona County, Minnesota. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Aug 18, 1993, 9:04 AM CDT (14:04 UTC)
- Expired
- Aug 18, 1993, 9:45 AM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Wabasha County, MN, Winona County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 2.1 hours before the alert went out and 149 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
- 12 J/kg
- Mixed-layer CIN
- -421 J/kg
- Mixed-layer LCL
- 1027 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 100 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 KRST 181405 RRA SVRRST MNC157-169-181445- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ROCHESTER MN 904 AM CDT WED AUG 18 1993 THE NATIONAL WEATHER SERVICE IN ROCHESTER MN HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST MINNESOTA ...WABASHA COUNTY...WINONA COUNTY AT 857AM...ROCHESTER RADAR INDICATED THAT A SEVERE THUNDERSTORM WAS MOVING THROUGH THE EASTERN PORTION OF OLMSTED INTO WINONA AND WABASHA COUNTIES OF SOUTHEAST MINNESOTA. THESE THUNDERSTORMS WERE MOVING TOWARD THE EAST AT 40MPH AND SHOULD MOVE THROUGH THE WHITEWATER STATE PARK BY 910AM. THESE THUNDERSTORMS DID PRODUCE 70 MPH WINDS AS THEY MOVED THROUGH AND AROUND THE ROCHESTER AREA. THEY ALSO PRODUCED 3/4 INCH HAIL NEAR SIMPSON...WHICH IS 5 MILES TO THE SOUTH OF ROCHESTER. PERSONS IN THE PATH OF THIS STORM INCLUDE...PLAINVIEW...WEAVER... ALTURA...ST. CHARLES...AND WINONA. WINDS IN EXCESS OF 60 MPH...MAKE THIS A VERY DANGEROUS STORM. GET READY FOR DAMAGING WINDS. HOUSES COULD BE BADLY DAMAGED... SO HEAD FOR THE BASEMENT. MOBILE HOMES COULD BE OVERTURNED. PEOPLE IN MOBzILE HOMES SHOULD FLEE TO A STORM SHELTER. &
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, Aug 18, 8:05 AM CDT, 59 minutes before
MNZ016-WIZ003-006-181400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 758 AM CDT WED AUG 18 1993 SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL... DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM. PEOPLE IN MOBILE HOMES SHOULD GO TO A STORM SHELTER.
Special weather statement, Aug 18, 8:11 AM CDT, 53 minutes before
MNZ016-WIZ003-006-181400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 758 AM CDT WED AUG 18 1993 ...TORRENTIAL RAINS SOUTHEAST METRO AREA AND WEST CENTRAL WISCOSNIN... AT 750 AM...TORRENTIAL RAINS EXTENDED FROM EASTERN DAKOTA COUNTY ACROSS PIERCE AND ST CROIX CLUNTIES OF WEST CENTRAL WISCONSIN. AN INTENSE LINE OF THUNDERSTORMS THAT EXTENDED FROM NORTHFIELD TO HASTINGS..IN MINNESOTA..TO RIVER FALLS BALDWIN IN WISCONSIN..WAS RESPONSIBLE FOR THESE HEAVY RAINS. A SEVERE THUNDERSTORMS WARNING FOR DAMAGING WINDS IS STILL IN EFFECT ALONG THIS LINE OF STORMS UNTIL 815 AM FOR PIERCE.. ST CROIX AND POLK COUNTIES. RAINFALL OVER AN INCH AN HOUR HAS BEEN REPORTED WITH THESE STORMS. THIS AMOUNT OF RAIN IN A RELATIVELY SHORT PERIOD OF TIME IS USUALLY ENOUGH TO CAUSE RAPID RUNOFF AND LOCALIZED FLOODING. CAUTION IS ADVISED AROUND UNDERPASSES..SMALL STREAMS AND DRAINAGE DITCHES WHERE FLOODING IS LIKELY. THIS LINE OF INTENSE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR.
Special weather statement, Aug 18, 8:12 AM CDT, 52 minutes before
MNZ016-WIZ003-006-181400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 758 AM CDT WED AUG 18 1993 ...TORRENTIAL RAINS SOUTHEAST METRO AREA AND WEST CENTRAL WISCOSNIN... AT 750 AM...TORRENTIAL RAINS EXTENDED FROM EASTERN DAKOTA COUNTY ACROSS PIERCE AND ST CROIX CLUNTIES OF WEST CENTRAL WISCONSIN. AN INTENSE LINE OF THUNDERSTORMS THAT EXTENDED FROM NORTHFIELD TO HASTINGS..IN MINNESOTA..TO RIVER FALLS BALDWIN IN WISCONSIN..WAS RESPONSIBLE FOR THESE HEAVY RAINS. A SEVERE THUNDERSTORMS WARNING FOR DAMAGING WINDS IS STILL IN EFFECT ALONG THIS LINE OF STORMS UNTIL 815 AM FOR PIERCE.. ST CROIX AND POLK COUNTIES. RAINFALL OVER AN INCH AN HOUR HAS BEEN REPORTED WITH THESE STORMS. THIS AMOUNT OF RAIN IN A RELATIVELY SHORT PERIOD OF TIME IS USUALLY ENOUGH TO CAUSE RAPID RUNOFF AND LOCALIZED FLOODING. CAUTION IS ADVISED AROUND UNDERPASSES..SMALL STREAMS AND DRAINAGE DITCHES WHERE FLOODING IS LIKELY. THIS LINE OF INTENSE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR.
Special weather statement, Aug 18, 8:13 AM CDT, 51 minutes before
MNZ016-WIZ003-006-181400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 758 AM CDT WED AUG 18 1993 ...TORRENTIAL RAINS SOUTHEAST METRO AREA AND WEST CENTRAL WISCOSNIN... AT 750 AM...TORRENTIAL RAINS EXTENDED FROM EASTERN DAKOTA COUNTY ACROSS PIERCE AND ST CROIX CLUNTIES OF WEST CENTRAL WISCONSIN. AN INTENSE LINE OF THUNDERSTORMS THAT EXTENDED FROM NORTHFIELD TO HASTINGS..IN MINNESOTA..TO RIVER FALLS BALDWIN IN WISCONSIN..WAS RESPONSIBLE FOR THESE HEAVY RAINS. A SEVERE THUNDERSTORMS WARNING FOR DAMAGING WINDS IS STILL IN EFFECT ALONG THIS LINE OF STORMS UNTIL 815 AM FOR PIERCE.. ST CROIX AND POLK COUNTIES. RAINFALL OVER AN INCH AN HOUR HAS BEEN REPORTED WITH THESE STORMS. THIS AMOUNT OF RAIN IN A RELATIVELY SHORT PERIOD OF TIME IS USUALLY ENOUGH TO CAUSE RAPID RUNOFF AND LOCALIZED FLOODING. CAUTION IS ADVISED AROUND UNDERPASSES..SMALL STREAMS AND DRAINAGE DITCHES WHERE FLOODING IS LIKELY. THIS LINE OF "INTENSE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR.
Special weather statement, Aug 18, 8:20 AM CDT, 44 minutes before
MNZ016-WIZ003-006-181430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 820 AM CDT WED AUG 18 1993 ...SEVERE THUNDERSTORM WARNINGS HAVE EXPIRED IN WEST CENTRAL WISCONSIN... AT 820 AM...A LINE OF THUNDERSTORMS WITH HEAVY RAINFALL EXTENDED FROM MENOMONIE THROUGH ELLSWORTH IN WEST CENTRAL WISCONSIN TO CANNON FALLS IN NORTHERN GOODHUE COUNTY OF MINNESOTA. THIS LINE OF THUNDERSTORMS WAS MOVING EAST AT 30 MILES AN HOUR. NO SEVERE HAS BEEN REPORTED ALONG THIS LINE SINCE 800 AM. THE SEVERE THUNDERSTORM WARNINGS FOR PIERCE..ST CROIX AND POLK COUNTIES HAVE EXPIRED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL NOON ACROSS PORTIONS OF THE TWIN CITIES METRO AREA AS WELL AS WEST CENTRL WISCONSIN.
Special weather statement, Aug 18, 8:26 AM CDT, 38 minutes before
MNZ016-WIZ003-006-181430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 820 AM CDT WED AUG 18 1993 ...SEVERE THUNDERSTORM WARNINGS HAVE EXPIRED IN WEST CENTRAL WISCONSIN... AT 820 AM...A LINE OF THUNDERSTORMS WITH HEAVY RAINFALL EXTENDED FROM MENOMONIE THROUGH ELLSWORTH IN WEST CENTRAL WISCONSIN TO CANNON FALLS IN NORTHERN GOODHUE COUNTY OF MINNESOTA. THIS LINE OF THUNDERSTORMS WAS MOVING EAST AT 30 MILES AN HOUR. NO SEVERE HAS BEEN REPORTED ALONG THIS LINE SINCE 800 AM. THE SEVERE THUNDERSTORM WARNINGS FOR PIERCE..ST CROIX AND POLK COUNTIES HAVE EXPIRED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL NOON ACROSS PORTIONS OF THE TWIN CITIES METRO AREA AS WELLH AS WEST CENTRL WISCONSIN.
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 4:46 AM CDT | Tornado Warning | MPX | Benton | 29 min |
| Aug 18, 5:20 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Wright | 40 min |
| Aug 18, 5:24 AM CDT | Severe Thunderstorm Warning | MPX | Meeker | 36 min |
| Aug 18, 5:52 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Wright | 53 min |
| Aug 18, 6:46 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Nicollet | 44 min |
| Aug 18, 6:58 AM CDT | Severe Thunderstorm Warning | MPX | Ramsey | 30 min |
| Aug 18, 6:58 AM CDT | Severe Thunderstorm Warning | MPX | Chisago, Washington | 47 min |
| Aug 18, 8:07 AM CDT | Severe Thunderstorm Warning | MPX | Dodge, Steele | 38 min |
| Aug 18, 8:45 AM CDT | Severe Thunderstorm Warning | MPX | Olmsted | 15 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1993Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive.