Alert archive / Minnesota / Tornado Warnings in 1988
Tornado Warning 5, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Jul 29, 1988, 7:25 PM CDT for Isanti County, Minnesota. It was in force for 5 min.
The area
The counties it named.
The facts
- Issued
- Jul 29, 1988, 7:25 PM CDT (00:25 UTC)
- Expired
- Jul 29, 1988, 7:30 PM CDT
- In force
- 5 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Isanti County, MN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 0.4 hours before the alert went out and 83 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
- 3828 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1155 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 300025
TORMSP
MNC059-300115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
725 PM CDT FRI JUL 29 1988
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE EAST CENTRAL PART OF MINNESOTA
NORTHERN ISANTI
AT 705 PM CDT..RADAR INDICATED A POSSIBLE TORNADO OVER THE CITY
OF CAMBRIDGE..IN NORTHERN ISANTI COUNTY. CAMBRIDGE IS 48 MILES
NORTH OF DOWNTOWN MINNEAPOLIS.
THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN
THE PATH OF A TORNADO MOVE TO A SHELTER BELOW GROUND IF AVAILABLE.
OTHERWISE..GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR
POSSIBLE. AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A
REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
HARRISONWhat 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, Jul 29, 4:45 PM CDT, 2 hours 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 445 PM CDT FRI JUL 29 1988 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM CDT... FOR SOUTHWEST THROUGH NORTHEAST MINNESOTA...ALONG WITH NORTHWEST WISCONSIN... AT 430 PM CDT...A BAND OF SCATTERED SHOWERS AND THUNDERSTORMS HAD DEVELOPED ACROSS NORTHEAST MINNESOTA SINCE 330 PM CDT. THIS NARROW BAND OF THUNDERSTORMS WAS LOCATED FROM 5 MILES WEST OF CLOQUET..TO JUST NORTHEAST OF ELY..IN NORTHEAST MINNESOTA. POSSIBLY HEAVY RAIN WAS FALLING NEAR THE TOWN OF CROMWELL. MOVEMENT WAS EAST AT 25 MILES AN HOUR. ANOTHER SMALL AREA OF SHOWERS AND A FEW THUNDERSTORMS HAD ALSO DEVELOPED ACROSS THE SOUTHWEST CORNER OF MINNESOTA..FROM 5 MILES NORTH OF MARSHALL..TO 5 MILES EAST OF WILLMAR. MOVEMENT WAS EAST AT 25 MILES AN HOUR. THESE SHOWERS AND THUNDERSTORMS WERE RAPIDLY DEVELOPING ALONG AN APPROACHING COLD FRONT. AT 3 PM CDT..THIS FRONTAL SYSTEM EXTENDED FROM NEAR ELY IN NORTHEAST MINNESOTA..ACROSS CENTRAL MINNESOTA..TO SOUTH OF ALEXANDRIA..THEN INTO WESTERN SOUTH DAKOTA. IF THREATENING WEATHER APPROACHES YOUR AREA..SEEK SHELTER. SJC
Special weather statement, Jul 29, 5:16 PM CDT, 2 hours 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MN 515 PM CDT FRI JUL 29 1988 ...SEVERE THUNDERSTORM WATCH IN CENTRAL MINNESOTA UNTIL 10PM CDT... NO SEVERE WEATHER HAS BEEN REPORTED IN CENTRAL MINNESOTA THIS AFTERNOON BUT A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM CDT. AT 510 PM CDT A VERY STRONG THUNDERSTORM WITH HEAVY RAIN AND POSSIBLY SOME HAIL WAS LOCATED IN BENTON COUNTY 10 MILES NORTHWEST OF FOLEY MINNESOTA OR 20 MILES NORTHEAST OF ST. CLOUD. THIS STORM WAS MOVING EAST AT 25 MPH. A SIGNIFICANT DANGER WITH ANY THUNDERSTORM IS LIGHTNING. BOATERS SHOULD GET OFF THE LAKE...GOLFERS HEAD TO THE CLUB HOUSE...BALL PLAYERS MOVE OFF THE DIAMONDS...ANY ONE OUTSIDE SHOULD MOVE INSIDE UNTIL THE STORM PASSES OUT OF THE AREA. WDV
Special weather statement, Jul 29, 5:51 PM CDT, 1 hour 34 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 549 PM CDT FRI JUL 29 1988 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM CDT... FOR SOUTHWEST THROUGH NORTHEAST MINNESOTA...ALONG WITH NORTHWEST WISCONSIN... AT 530 PM CDT...AN AREA OF SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED ACROSS NORTHEAST..EAST CENTRAL..CENTRAL..AND SOUTHWEST MINNESOTA. THESE THUNDERSTORMS HAD INCREASED..BOTH IN INTENSITY AND IN AREAL COVERAGE SINCE 430 PM. THIS AREA WAS LOCATED 20 MILES TO EITHER SIDE OF A LINE FROM THE DULUTH- TWO HARBORS AREA..TO MCGRATH..THEN THROUGH THE TOWNS OF MORA AND FOLEY.. THROUGH ST CLOUD..TO SOUTH OF WILLMAR..THEN STRETCHED SOUTH WEST TO JUST NORTH OF MARSHALL. MOVEMENT WAS EAST AT 20 MILES AN HOUR. . ONE OF THESE THUNDERSTORMS PRODUCED 65 MPH WIND GUSTS AS IT PASSED THROUGH THE TOWN OF CLOQUET..IN NORTHEAST MINNESOTA..JUST SOUTHWEST OF DULUTH. ANOTHER THUNDERSTORM WAS DEPOSITING MARBLE SIZE HAIL AND HEAVY RAIN IN THE FOLEY AND ST CLOUD AREA..ACROSS CENTRAL MINNESOTA. THESE THUNDERSTORMS HAVE HAD A HISTORY OF STRONG GUSTY WINDS..HEAVY RAIN..AND HAIL. LIGHTNING IS ANOTHER PROBLEM WITH THESE THUNDERSTORMS AS THEY CONTINUE THEIR PASSAGE EASTWARD ACROSS MINNESOTA. SHOULD SEVERE WEATHER APPROACH YOUR AREA..TAKE COVER. SJC
Special weather statement, Jul 29, 6:33 PM CDT, 52 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 630 PM CDT FRI JUL 29 1988 ...THUNDERSTORMS APPRAOCHING THE TWIN CITIES METROPOLITAN AREA... A LINE OF THUNDERSTORMS WITH HEAVY RAIN AND HAIL LOCATED JUST NORTH OF THE TWIN CITIES HAS BEEN MOVING SLOWLY SOUTHEAST. THIS LINE OF THUNDERSTORMS IS EXPECTED PASS THROUGH THE METROPOLITAN AREA THIS EVENING. GUSTY WINDS..HAIL AND HEAVY RAIN ARE EXPECTED TO REACH WRIGHT COUNTY AND ISANTI COUNTIES JUST TO THE NORTH AND NORTHWEST OF THE TWIN CITIES BY 700 PM. THE MOVEMENT OF THESE THUNDERSTORMS SHOULD BRING THEN ACROSS ANOKA COUNTY AND INTO NORTHERN HENNEPIN COUNTY BY 800 PM. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR A LARGE SECTION OF MINNESOTA INCLUDING THE TWIN CITIES UNTIL 1000 PM. THOSE OURDOORS THIS EVENING SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFETY. ALLOW PLENTY OF TIME TO GET OFF AREA LAKES. KEEP AN EYE ON THE SKY AND LISTEN FOR LATVER STATEMENTS AND POSSIBLE WARNINGS. WJH
Local storm report, Jul 29, 7:15 PM CDT, 10 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST. CLOUD MN
710 PM CDT FRI JUL 29 1988
...ATTN SELS...PRELIMINARY STORM REPORT FROM 29 JUL 1988...
540 PM CDT 1/2 INCH HAIL IN CITY OF ST. CLOUD.
550 PM CDT GOLF BALL SIZE HAIL AT MILACA IN MILLE LACS COUNTY...
28 MILES NORTHEAST OF ST. CLOUD.
605 PM CDT GOLF BALL SIZE HAIL AT 5 MILES EAST OF MILACA.
605 PM CDT 3/4 INCH HAIL 7 MILES EAST OF ST. CLOUD IN BENTON COUNTY.
625 PM CDT 3/4 INCH HAIL AT LITCHFIELD MINNESOTA IN MEEKER COUNTY...
35 MILES SOUTHWEST OF ST. CLOUD.
614-632 PM CDT CONTINOUS HAIL AT THE ST. CLOUD NATIONAL WEATHER
SERVICE OFFICE. NUMEROUS STONES 1 INCH.
545-6 PM CDT PUBLIC REPORT OF HEAVY HAIL SHOWER 8 MILES SOUTH OF ST.
CLOUD. SEVERAL CHUNKS OF 3 INCH SIZE.
FRASERNearby
Tornado Warnings in Minnesota, 1988Every tornado warning in 1988Tornadoes in 1988
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.