Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 68, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 23, 1987, 12:15 PM CDT for Mille Lacs County, Minnesota. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Jul 23, 1987, 12:15 PM CDT (17:15 UTC)
- Expired
- Jul 23, 1987, 1:15 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.
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 5.3 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
- 575 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 1013 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- -25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 23, 6:15 AM CDT, 6 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 615 AM CDT THU JUL 23 1987 ...PART OF NORTHERN MINNESOTA IS BEING CLEARED FROM SEVERE THUNDERSTORM WATCH NUMBER 420... SEVERE THUNDERSTORMS HAVE MOVED RAPIDLY ACROSS PORTIONS OF NORTHERN MINNESOTA THIS MORNING. DUE TO THIS RAPID MOVEMENT MUCH OF THE WESTERN HALF OF SEVERE THUNDESTORM WATCH NUMBER 420 HAS BEEN CLEARED. THE COUNTIES WHICH HAVE BEEN CLEARED ARE...MARSHALL..LAKE OF THE WOODS.. POLK..PENNINGTON..RED LAKE..NORMAN..MAHNOMEN..CLEARWATER..BELTRAMI.. CLAY..BECKER..HUBBARD.WILKIN..OTTERTAIL..WADENA..TRAVERSE..GRANT AND NORTHERN DOUGLAS. THUNDERSTORMS CONTINUE OVER NORTH CENTRAL AND NORTHEAST MINNESOTA. THESE THUNDERSTORMS STILL HAVE THE POTIENTAL FOR PRODUCING SEVERE WEATHER UNTIL 9 AM THIS MORNING AND SEVERE THUNDERSTORM WATCH 420 WILL REMAIN IN EFFECT FOR HE EASTERN COUNTIES OF THE WATCH AREA. MOVEMENT OF THESE THUNDERSTORMS WAS EAST AT R40 TO 45 MILES AN HOUR. DOMBROWSKY
Special weather statement, Jul 23, 7:07 AM CDT, 5 hours 8 minutes before
SPECIAL WEATHER STATEMANT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 0705 AM CDT THU JUL 23 1987 THE NATIONAL SEVERE STORMS FORECAST CENTER HAS CANCELLED SEVERE THUNDERSTORM WATCH NUMBER 420 ISS}UED AT 211 AM CDT FOR CENTRAL AND NORTHERN MINNESOTA. THUNDERSTORMS WILL CONTINUE TO DIMINISH DURING THE NEXT SEVERAL HOURS BUT ARE NOT EXPECTED TO REACH SEVERE LIMITS. DOMBROWSKY
Special weather statement, Jul 23, 11:42 AM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MN 1142 AM CDT THU JUL 23 1987 ...STRONG THUNDERSTORM MOVING ACROSS CENTRAL STEARNS COUNTY... AT 1140 RADAR SHOWED A STRONG THUNDERSTORM NEAR ALBANY IN CENTRAL STEARNS COUNTY OF CENTRAL MINNESOTA. ALBANY IS 18 MILES NORTHWEST OF ST CLOUD. THESE THUNDERSTORMS HAVE PRODUCED PEA SIZE HAIL AND SOME HAIL UP TO 1/2 INCH. THE THUNDERSTORMS CONTINUE TO MOVE EAST AT 30 MILES AN HOUR. NO SEVERE WEATHER HAS BEEN REPORTED...HOWEVER PERSONS IN THE PATH OF THESE THUNDERSTORMS CAN EXPECT SMALL HAIL...GUSTY WINDS...AND BRIEF HEAVY RAIN. THESE STORMS WILL MOVE THROUGH THE ST CLOUD AREA BETWEEN 12 NOON CDT AND 1 PM CDT YOUNG
Special weather statement, Jul 23, 12:00 PM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1155 AM CDT THU JUL 23 1987
..STRONG THUNDERSTORM OVER CENTRAL MINNESOTA..
AT 1140 AM CDT..AN ISOLATED INTENSE THUNDERSTORM WAS OCCURRING OVER
CENTRAL MINNESOTA TO THE WEST OF ST CLOUD NEAR THE TOWN OF ALBANY IN
NORTHERN STEARNS COUNTY.
THIS THUNDERSTORM IS CAPABLE OF PRODUCING HAIL..STRONG GUSTY WINDS ALONG
WITH FREQUENT LIGHTNING STRIKES AND BRIEF HEAVY RAINS AS IT MOVES EAST
AT ABOUT 35 MILES AN HOUR TOWARD THE ST CLOUD AREA.
THIS STRONG THUNDERSTORM WAS PART OF AN AREA OF SHOWERS AND THUNDERSTORMS
REMAINING ACROSS PARTS OF CENTRAL AND EAST CENTRAL MINNESOTA AS WELL AS
NORTHWEST SECTIONS OF WISCONSIN FROM NEAR ALEXANDRIA..TO ST CLOUD AND
MONTICELLO..EAST TOWARD HAYWARD WISCONSIN.
MOVEMENT WAS EAST AT 35 MILES AN HOUR.
SWANBERGThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 12:15 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Sherburne, Stearns | 60 min |
| Jul 23, 1:11 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Isanti | 49 min |
| Jul 23, 2:08 PM CDT | Severe Thunderstorm Warning | MPX | Washington | 52 min |
| Jul 23, 5:15 PM CDT | Severe Thunderstorm Warning | MPX | Sherburne | 60 min |
| Jul 23, 5:33 PM CDT | Severe Thunderstorm Warning | MPX | Wright | 42 min |
| Jul 23, 6:16 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Wright | 59 min |
| Jul 23, 6:40 PM CDT | Tornado Warning | MPX | Anoka, Hennepin | 65 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.