Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 127, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 29, 1987, 9:21 PM CDT for Chippewa County, Minnesota. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- Aug 29, 1987, 9:21 PM CDT (02:21 UTC)
- Expired
- Aug 29, 1987, 10:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Chippewa 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, 2.4 hours before the alert went out and 156 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
- 1569 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1398 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 341 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 12.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSTC 300232
SVRSTC
MNC023-067-300300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MN
921 PM CDT SAT AUG 29 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES 0F...
CENTRAL MINNESOTA...SOUTHEAST HALF OF CHIPPEWA...INCLUDING THE CITIES
OF MAYNARD AND CLARA CITY....SOUTHERN HALF OF KANDIYOHI...INCLUDING
THE CITIES OF PRINSBURG..BLOMKEST...LAKE LILLIAN AND ROSELAND.
AT 920 PM CDT SHERIFFS DEPUTY OF CHIPPEWA COUNTY REPORT GOLF BALL
SIZE HAIL IN THE CITY OF CLARA CITY IN SOUTHEASTERN CHIPPEWA COUNTY
...18 MILES SOUTHWEST OF WILLMAR MINNESOTA. THIS SEVERE THUNDERSTORM
WAS MOVING TO THE EAST NORTHEAST AT 45 MILES PER HOUR.
REMEMBER SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS...LARGE
HAIL AND FREQUENT LIGHTNING STRIKES. ALSO SEVERE THUNDERSTORMS CAN
AND OCCASIONALLY DO PRODUCE A TORNADO bWITH LITTLE OR NO ADVANCE
WARNING...SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF
SAFETY SUCH AS A BASEMENT OR INTERIOR ROOM OF A REINFORCED BUILDING.
TRIPLETTWhat 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 29, 7:53 PM CDT, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 750 PM CDT SAT AUG 29 1987 AT 750 PM...ISOLATED THUNDERSTORMS WITH HEAVY RAIN WERE OCCURRING NEAR LITCHFIELD IN SOUTHERN MCLEOD COUNTY OF CENTRAL MINNESOTA... AND NEAR PRINCETON IN SOUTHERN MILLE LACS COUNTY OF EAST CENTRAL MINNESOTA. ALTHOUGH NO REPORTS OF SEVERE WEATHER HAD BEEN RECIEVED ...THE RAPID DEVELOPMENT OF THESE THUNDERSTORMS SUGGESTS THAT THEY MAY HAVE THE POTENTIAL TO PRODUCE STRONG GUSTY WINDS. MARBLE SIZE HAIL WAS REPORTED AT PRINCETON AT ABOUT 750 PM. MOVEMENT WAS TO THE EAST AT 30 TO 35 MILES AN HOUR. THESE THUNDERSTORMS WILL BE MOVING ACROSS ISANTI AND WRIGHT COUNTIES OF CENTRAL AND EAST CENTRAL MINNESOTA BETWEEN 750 PM AND 830 PM. IF THREATENING WEATHER APPROACHES...SEEK SAFE SHELTER AND IF POSSIBLE RELAY REPORTS OF THE WEATHER TO LAW ENFORCEMENT OFFICIALS. KRAFT
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 8:00 PM CDT | Severe Thunderstorm Warning | MPX | Meeker | 30 min |
| Aug 29, 8:04 PM CDT | Severe Thunderstorm Warning | MPX | Wright | 56 min |
| Aug 29, 8:21 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti | 54 min |
| Aug 29, 8:30 PM CDT | Severe Thunderstorm Warning | MPX | Sherburne | 30 min |
| Aug 29, 8:47 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Washington | 58 min |
| Aug 29, 9:53 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Isanti | 52 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1987Every severe thunderstorm warning in 1987
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.