Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 149, NWS Twin Cities, MN

July 19, 1994Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 19, 1994, 1:57 AM CDT for Wright County, Minnesota. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Jul 19, 1994, 1:57 AM CDT (06:57 UTC)
Expired
Jul 19, 1994, 2:45 AM CDT
In force
48 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Wright County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 7.0 hours before the alert went out and 46 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 1994-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 600 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1994-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 180 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
600 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
1060 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
180 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMSP 190656 RRA
SVRMSP
MNC171-190745-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
157 AM CDT TUE JUL 19 1994
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  245 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MINNESOTA
 
   ...WRIGHT COUNTY
 
AT 155 AM...RADAR INDICATED A SEVERE THUNDERSTORM MOVING INTO WESTERN
WRIGHT COUNTY...NEAR ANNANDALE TO KNAPP. THESE TOWNS ARE 40 MILES WEST
OF THE TWIN CITIES. CITIES IN THE PATH ARE SILVER CREEK...MAPLE
LAKE...BUFFALO...AND COKATO.
 
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL.
 
 
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.
 
 
KRC/DRB

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, Jul 19, 1:15 AM CDT, 42 minutes before
MNZ004>096-190700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
115 AM CDT TUE JUL 19 1994

...SEVERE THUNDERSTORM WATCH NUMBER 631 FOR NORTHWEST MINNESOTA
CANCELLED...

THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT FOR NORTHWEST
MINNESOTA UNTIL 3 AM THIS MORNING HAS BEEN CANCELLED.  THUNDERSTORMS
IN THIS AREA HAVE MOVED EASTWARD AND GENERALLY DECREASED IN INTENSITY
SINCE LATE MONDAY EVENING.

AS OF 110 AM...THUNDERSTORMS PERSISTED ALONG A LINE FROM NEAR BEMIDJI
TO GULL LAKE TO LITTLE FALLS TO JUST NORTHWEST OF ST CLOUD.  WEATHER
RADAR INDICATED THAT THE STRONGEST OF THESE STORMS WERE ALONG THAT
PORTION OF THE LINE FROM JUST WEST OF GULL LAKE TO NEAR ST CLOUD.

WHILE NO SEVERE WEATHER WATCHES ARE CURRENTLY IN EFFECT OVER THE
STATE...CONDITIONS STILL REMAIN FOR THE POTENTIAL DEVELOPMENT OF
LOCALIZED HEAVY RAIN AND ISOLATED OCCURRENCES OF SEVERE WEATHER
DURING THE EARLY MORNING HOURS.  IN PARTICULAR...THE CENTRAL AND EAST
CENTRAL PORTIONS OF MINNESOTA APPEAR MOST SUSCEPTIBLE TO HEAVY
WEATHER UNTIL AT LEAST 300 AM.

LUSSKY
Special weather statement, Jul 19, 1:21 AM CDT, 36 minutes before
MNZ004>096-190700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
115 AM CDT TUE JUL 19 1994

...SEVERE THUNDERSTORM WATCH NUMBER 631 FOR NORTHWEST MINNESOTA
CANCELLED...

THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT FOR NORTHWEST
MINNESOTA UNTIL 3 AM THIS MORNING HAS BEEN CANCELLED.  THUNDERSTORMS
IN THIS AREA HAVE MOVED EASTWARD AND GENERALLY DECREASED IN INTENSITY
SINCE LATE MONDAY EVENING.

AS OF 110 AM...THUNDERSTORMS PERSISTED ALONG A LINE FROM NEAR BEMIDJI
TO GULL LAKE TO LITTLE FALLS TO JUST NORTHWEST OF ST CLOUD.  WEATHER
RADAR INDICATED THAT THE STRONGEST OF THESE STORMS WERE ALONG THAT
PORTION OF THE LINE FROM JUST WEST OF GULL LAKE TO NEAR ST CLOUD.

WHILE NO SEVERE WEATHER WATCHES ARE CURRENTLY IN EFFECT OVER THE
STATE...CONDITIONS STILL REMAIN FOR THE POTENTIAL DEVELOPMENT OF
LOCALIZED HEAVY RAIN AND ISOLATED OCCURRENCES OF SEVERE WEATHER
DURING THE EARLY MORNING HOURS.  IN PARTICULAR...THE CENTRAL AND EAST
CENTRAL PORTIONS OF MINNESOTA APPEAR MOST SUSCEPTIBLE TO HEAVY
WEATHER UNTIL AT LEAST 300 AM.

LUSSKY
Special weather statement, Jul 19, 1:34 AM CDT, 23 minutes before
MNZ059-060-065-066-067-068-073-190730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
134 AM CDT TUE JUL 19 1994

AT 130 AM RADAR SHOWED A LINE OF STRONG THUNDERSTORMS RAPIDLY
DEVELOPING OVER CENTRAL MINNESOTA. THE LINE EXTENDED FROM JUST WEST
OF ST CLOUD TO LITCHFIELD TO JUST WEST OF HUTCHINSON.

THE STORMS WERE DEVELOPING VERY QUICKLY AND HAVE THE POTENTIAL TO
PRODUCE STRONG WINDS...HAIL...AND VERY HEAVY RAINFALL.

THE STORMS WERE MOVING SOUTHEAST AT 15 TO 20 MPH TOWARD WRIGHT AND
MCLEOD COUTNIES.  THESE STORMS WILL MOVE THROUGH THE CITIES OF
CLEARWATER...ANNANDALE...COKATO...AND HUTCHINSON BEFORE 215 AM.

IF STORMS APPROACH YOUR AREA...BE PREPARED TO MOVE TO A PLACE OF
SAFETY QUICKLY.  AVOID THE USE OF TELEPHONES OR ELECTRICAL A
PPLIANCES DURING LIGHTNING ACTIVITY.

DRB
Special weather statement, Jul 19, 1:35 AM CDT, 22 minutes before
MNZ059-060-065-066-067-068-073-190730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
134 AM CDT TUE JUL 19 1994

AT 130 AM RADAR SHOWED A LINE OF STRONG THUNDERSTORMS RAPIDLY
DEVELOPING OVER CENTRAL MINNESOTA. THE LINE EXTENDED FROM JUST WEST
OF ST CLOUD TO LITCHFIELD TO JUST WEST OF HUTCHINSON.

THE STORMS WERE DEVELOPING VERY QUICKLY AND HAVE THE POTENTIAL TO
PRODUCE STRONG WINDS...HAIL...AND VERY HEAVY RAINFALL.

THE STORMS WERE MOVING SOUTHEAST AT 15 TO 20 MPH TOWARD WRIGHT AND
MCLEOD COUTNIES.  THESE STORMS WILL MOVE THROUGH THE CITIES OF
CLEARWATER...ANNANDALE...COKATO...AND HUTCHINSON BEFORE 215 AM.

IF STORMS APPROACH YOUR AREA...BE PREPARED TO MOVE TO A PDLACE OF
SAFETY QUICKLY.  AVOID THE USE OF TELEPHONES OR ELECTRICAL A
PPLIANCES DURING LIGHTNING ACTIVITY.

DRB
Local storm report, Jul 19, 1:45 AM CDT, 12 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
145 AM CDT TUE JUL 19 1994

PRELIMINARY REPORT FOR 19 JUL 94

140   AM      STEARNS COUNTY...CITY OF ST CLOUD...3/4 TO 1 INCH HAIL.

RAY
Local storm report, Jul 19, 1:49 AM CDT, 8 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
145 AM CDT TUE JUL 19 1994

PRELIMINARY REPORT FOR 19 JUL 94

140   AM      STEARNS COUNTY...CITY OF ST CLOUD...3/4 TO 1 INCH HAIL.

RAY

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 8:13 PM CDTSevere Thunderstorm WarningMPXStearns47 min
Jul 19, 1:31 AM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns59 min
Jul 19, 2:26 AM CDTSevere Thunderstorm WarningMPXCarver, McLeod39 min
Jul 19, 2:37 AM CDTSevere Thunderstorm WarningMPXHennepin54 min
Jul 19, 3:49 PM CDTSevere Thunderstorm WarningMPXBrown, Nicollet41 min
Jul 19, 4:04 PM CDTTornado WarningMPXMille Lacs26 min
Jul 19, 4:15 PM CDTTornado WarningMPXBenton30 min
Jul 19, 4:39 PM CDTTornado WarningMPXAnoka, Chisago, Isanti51 min
Jul 19, 5:27 PM CDTSevere Thunderstorm WarningMPXCarver48 min
Jul 19, 5:31 PM CDTSevere Thunderstorm WarningMPXChisago44 min
Jul 19, 5:48 PM CDTSevere Thunderstorm WarningMPXHennepin42 min
Jul 19, 6:11 PM CDTSevere Thunderstorm WarningMPXChisago49 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.