Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 92, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 18, 1993, 8:45 AM CDT for Olmsted County, Minnesota. It was in force for 15 min.
The area
The counties it named.
The facts
- Issued
- Aug 18, 1993, 8:45 AM CDT (13:45 UTC)
- Expired
- Aug 18, 1993, 9:00 AM CDT
- In force
- 15 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Olmsted County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 1.8 hours before the alert went out and 134 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 WUUS1 KRST 181345 RRA SVRRST MNC109-181430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ROCHESTER MINNESOTA ISSUED BY MINNEAPOLIS MN 845 AM CDT WED AUG 18 1993 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST MINNESOTA ...OLMSTED COUNTY AT 840 AM...SEVERE THUNDERSTORMS WINDS WERE ESTIMATED AT 70 MILES AN HOUR JUST NORTH OF ROCHESTER NEAR THE TOWN OF ORONOCO IN NORTHERN OLMSTED COUNTY. THIS THUNDERSTORM WAS MOVING EAST AT 40 MILES AN HOUR. SOME TOWNS IN THE PATH OF THIS STORM INCLUDE ORONOCO..ROCHESTER AND CHESTER. 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. WJH
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, 40 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, 34 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, 33 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, 32 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, 25 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, 19 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, 9:04 AM CDT | Severe Thunderstorm Warning | MPX | Wabasha, Winona | 41 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.