Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 177, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 19, 1994, 7:23 AM CDT for Olmsted County, Minnesota. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Aug 19, 1994, 7:23 AM CDT (12:23 UTC)
- Expired
- Aug 19, 1994, 8:00 AM CDT
- In force
- 37 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, 0.4 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
- 526 J/kg
- Mixed-layer CIN
- -196 J/kg
- Mixed-layer LCL
- 1006 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KRST 191223 RRA SVRRST MNC109-191300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ROCHESTER MN 723 AM CDT FRI AUG 19 1994 THE NATIONAL WEATHER SERVICE IN ROCHESTER MN HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 800 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST MINNESOTA ...SOUTHERN OLMSTED COUNTY AT 718 AM RADAR INDICATED A SEVERE THUNDERSTORM NEAR MANTORVILLE OR 15 MILES NORTHWEST OF ROCHESTER. THIS STORM WAS MOVING TO THE SOUTHEAST AT 25 MPH AND WILL MOVE THROUGH ROCHESTER AND STEWARTVILLE BY 8 AM. WHEN SEVERE THUNDERSTORMS ARE OCCURRING...STAY INSIDE A STRONG BUILDING. PROTECT YOURSELF FROM DAMAGING WINDS OR HAIL BY KEEPING AWAY FROM WINDOWS. LISTEN TO YOUR RADIO OR TELEVISION... BUT TURN OFF ALL OTHER ELECTRICAL APPLIANCES. DO NOT USE THE PHONE DURING PERIODS OF FREQUENT LIGHTNING.
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 19, 1:37 AM CDT, 5 hours 46 minutes before
MNZ052-053-059>063-065>070-073-WIZ014>016-023-028-190740- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 137 AM CDT FRI AUG 19 1994 ...STRONG THUNDERSTORMS OVER CENTRAL MINNESOTA... AT 135 AM...STRONG THUNDERSTORMS WERE OCCURRING BETWEEN ST CLOUD AND WILLMAR IN CENTRAL MINNESOTA. THEY MAY PRODUCE HAIL...STRONG GUSTY WINDS...VERY HEAVY RAINFALL...AND FREQUENT LIGHTNING. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER. OTHER SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER CENTRAL AND EAST CENTRAL MINNESOTA. THEY WERE MAINLY LOCATED TO THE NORTHWEST OF A LINE FROM WILLMAR TO MINNEAPOLIS TO DULUTH. MOVEMENT WAS TO THE SOUTHEAST AT 25 MILES AN HOUR. KRAFT
Special weather statement, Aug 19, 1:38 AM CDT, 5 hours 45 minutes before
MNZ052-053-059>063-065>070-073-WIZ014>016-023-028-190740- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 137 AM CDT FRI AUG 19 1994 ...STRONG THUNDERSTORMS OVER CENTRAL MINNESOTA... AT 135 AM...STRONG THUNDERSTORMS WERE OCCURRING BETWEEN ST CLOUD AND WILLMAR IN CENTRAL MINNESOTA. THEY MAY PRODUCE HAIL...STRONG GUSTY WINDS...VERY HEAVY RAINFALL...AND FREQUENT LIGHTNING. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER. OTHER SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER CENTRAL AND EAST CENTRAL MINNESOTA. THEY WERE MAINLY LOCATED TO THE NORTHWEST OF A LINE FROM WILLMAR TO MINNEAPOLIS TO DULUTH. MOVEMENT WAS TO THE SOUTHEAST AT 25 MILES AN HOUR. KRAFT
Special weather statement, Aug 19, 4:37 AM CDT, 2 hours 46 minutes before
MNZ052-053-059>063-065>070-073-WIZ014>016-023-028-191040- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 437 AM CDT FRI AUG 19 1994 ...STRONG THUNDERSTORM ENTERING TWIN CITIES METRO AREA... AT 435 AM...A STRONG THUNDERSTORM WAS LOCATED BETWEEN HUTCHINSON AND LE SUEUR...JUST WEST OF THE GREATER TWIN CITIES METRO AREA. THIS STORM IS MOVING TO THE EAST AT 25 MILES AN HOUR...AND SHOULD REACH DOWNTOWN MINNEAPOLIS BY ABOUT 600 AM. EARLY RUSH-HOUR MOTORISTS SHOULD USE CAUTION AS THIS STORM IS PRODUCING VERY HEAVY RAIN WHICH WILL RESTRICT VISIBILITY. OTHER SCATTERED THUNDERSHOWERS WERE LOCATED IN A 120 MILE WIDE BAND FROM NEAR WORTHINGTON MINNESOTA TO HAYWARD WISCONSIN. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. DLK
Special weather statement, Aug 19, 4:39 AM CDT, 2 hours 44 minutes before
MNZ052-053-059>063-065>070-073-WIZ014>016-023-028-191040- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 437 AM CDT FRI AUG 19 1994 ...STRONG THUNDERSTORM ENTERING TWIN CITIES METRO AREA... AT 435 AM...A STRONG THUNDERSTORM WAS LOCATED BETWEEN HUTCHINSON AND LE SUEUR...JUST WEST OF THE GREATER TWIN CITIES METRO AREA. THIS STORM IS MOVING TO THE EAST AT 25 MILES AN HOUR...AND SHOULD REACH DOWNTOWN MINNEAPOLIS BY ABOUT 600 AM. EARLY RUSH-HOUR MOTORISTS SHOULD USE CAUTION AS THIS STORM IS PRODUCING VERY HEAVY RAIN WHICH WILL RESTRICT VISIBILITY. OTHER SCATTERED THUNDERSHOWERS WERE LOCATED IN A 120 MILE WIDE BAND FROM NEAR WORTHINGTON MINNESOTA TO HAYWARD WISCONSIN. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. DLK
Special weather statement, Aug 19, 5:37 AM CDT, 1 hour 46 minutes before
MNZ052-053-059>063-065>070-073-WIZ014>016-023-028-191140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 537 AM CDT FRI AUG 19 1994 ...STRONG THUNDERSTORM OVER SOUTHWEST TWIN CITIES METRO AREA... A STRONG THUNDERSTORM DEVELOPED RAPIDLY OVER SCOTT COUNTY IN THE SOUTHWEST SUBURBS OF THE GREATER TWIN CITIES METRO AREA AT 535 AM. THIS STORM MAY PRODUCE HAIL...STRONG GUSTY WINDS TO 40 OR 50 MPH...AND PEA TO MARBLE SIZE HAIL. IT WAS LOCATED ON THE SOUTHERN SCOTT COUNTY LINE...NEAR NEW PRAGUE. IT WAS MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR INTO NORTHERN LE SUEUR AND RICE COUNTIES. PERSONS ENGAGED IN OUTDOOR ACTIVITIES IN THE NEW PRAGUE AREA SHOULD BE AWARE OF THE LIGHTNING DANGER AND BE READY TO SEEK SAFE SHELTER. DLK
Special weather statement, Aug 19, 5:38 AM CDT, 1 hour 45 minutes before
MNZ052-053-059>063-065>070-073-WIZ014>016-023-028-191140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 537 AM CDT FRI AUG 19 1994 ...STRONG THUNDERSTORM OVER SOUTHWEST TWIN CITIES METRO AREA... A STRONG THUNDERSTORM DEVELOPED RAPIDLY OVER SCOTT COUNTY IN THE SOUTHWEST SUBURBS OF THE GREATER TWIN CITIES METRO AREA AT 535 AM. THIS STORM MAY PRODUCE HAIL...STRONG GUSTY WINDS TO 40 OR 50 MPH...AND PEA TO MARBLE SIZE HAIL. IT WAS LOCATED ON THE SOUTHERN SCOTT COUNTY LINE...NEAR NEW PRAGUE. IT WAS MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR INTO NORTHERN LE SUEUR AND RICE COUNTIES. PERSONS ENGAGED IN OUTDOOR ACTIVITIES IN THE NEW PRAGUE AREA SHOULD BE AWARE OF THE LIGHTNING DANGER AND BE READY TO SEEK SAFE SHELTER. DLK
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 5:46 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Rice | 29 min |
| Aug 19, 6:13 AM CDT | Severe Thunderstorm Warning | MPX | Rice, Steele | 47 min |
| Aug 19, 6:59 AM CDT | Severe Thunderstorm Warning | MPX | Dodge | 31 min |
| Aug 19, 8:52 AM CDT | Severe Thunderstorm Warning | MPX | Houston | 38 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.