Alert archive / Minnesota / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 32, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 29, 1988, 5:50 PM CDT for Mille Lacs County, Minnesota. It was in force for 60 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 29, 1988, 5:50 PM CDT (22:50 UTC)
- Expired
- Jul 29, 1988, 6:50 PM CDT
- In force
- 60 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Mille Lacs County, MN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 29, 5:50 PM CDT | Hail 1.75 | Mille Lacs, MN | |
| Jul 29, 6:05 PM CDT | Hail 1.75 | Mille Lacs, MN |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 10.8 hours before the alert went out and 121 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
- 1062 J/kg
- Mixed-layer CIN
- -167 J/kg
- Mixed-layer LCL
- 1247 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 74 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 KSTC 292256
SVRSTC
MNC095-292350-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MN
550PM CDT FRI JUL 29 1988
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 650PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF
CENTRAL MINNESOTA:
SOUTHERN MILLE LACS
INCLUDING THE CITY OF
MILACA
AT 550PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTH OF THE
CITY OF MILACA. A STATE TROOPER REPORTED GOLFBALL SIZE HAIL WITH THIS
STORM AT 550PM CDT.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. BOATERS SHOUL/D MOVE OFF LAKES TO NEARBY SHELTER. PEOPLE
OUTSIDE SHOULD MOVE INSIDE STRONG BUILDINGS BUT STAY AWAY FROM
WINDOWS.
WDV/JFWhat 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 29, 4:45 PM CDT, 1 hour 5 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, 34 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
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 5:45 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Sherburne | 60 min |
| Jul 29, 6:05 PM CDT | Severe Thunderstorm Warning | MPX | Meeker | 55 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1988Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.