Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 41, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 11, 1987, 7:19 AM CDT for Hennepin County, Sherburne County, Minnesota. It was in force for 21 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1987, 7:19 AM CDT (12:19 UTC)
- Expired
- Jul 11, 1987, 7:40 AM CDT
- In force
- 21 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Hennepin County, MN, Sherburne 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, 0.3 hours before the alert went out and 42 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
- 2637 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSP 111219 SVRMSP MNC053-003-059-141-111315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 719 AM CDT SAT JUL 11 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF EAST CENTRAL MINNESOTA... NORTHERN HENNEPIN...ANOKA...SOUTHERN ISANTI AND SHERBURNE AT 710 AM CDT REPORTS NEAR BUFFALO IN WRIGHT COUNTY OF EAST CENTRAL MINNESOTA INDICATED STRONG WINDS CAUSING LOTS OF TREE DAMAGE AND WIDESPREAD POWER OUTAGES IN NORTHERN WRIGHT COUNTY. RADAR CONTINUED TO INDICATE SEVERE THUNDERSTORMS EXITING WRIGHT COUNTY AND ENTERING SHEREBURNE..NRN HENNEPIN AND ANOKA COUNTIES. LARGE HAIL VERY HEAVY RAINS CAUSING MINOR URBAN FLOODING AND WIND GUSTS IN EXCESS OF 55 MILES AN HOUR. CITIES IN THE PATH OF THESE THUNDERSTORMS ELK RIVER..ANOKA..BETHEL AND BROOKLYN PARK. MOVEMENTOF THESE SEVERE THUNDERSTORMS WAS TO THE EAST NORTHEAST AT 35 MILES AN HOUR. REMEMBER SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH..DESTRUCTIVE HAIL..DEADLY LIGHTNING AND VERY HEAVY RAIN. ALSO SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IF ONE IS SPOTTED. DOMBROWSKY
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 10:00 PM CDT | Severe Thunderstorm Warning | MPX | Todd | 60 min |
| Jul 10, 10:20 PM CDT | Tornado Warning | MPX | Todd | 25 min |
| Jul 11, 12:16 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott, Sibley | 44 min |
| Jul 11, 3:20 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 60 min |
| Jul 11, 4:20 AM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 60 min |
| Jul 11, 5:50 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 60 min |
| Jul 11, 6:15 AM CDT | Severe Thunderstorm Warning | MPX | Meeker | 60 min |
| Jul 11, 6:45 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 45 min |
| Jul 11, 7:11 AM CDT | Severe Thunderstorm Warning | MPX | Watonwan | 49 min |
| Jul 11, 7:19 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Isanti | 56 min |
| Jul 11, 7:42 AM CDT | Severe Thunderstorm Warning | MPX | Blue Earth | 48 min |
| Jul 11, 7:52 AM CDT | Severe Thunderstorm Warning | MPX | Washington | 28 min |
| Jul 11, 7:52 AM CDT | Severe Thunderstorm Warning | MPX | Chisago | 38 min |
| Jul 11, 4:47 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn | 53 min |
| Jul 11, 4:47 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 53 min |
| Jul 11, 5:31 PM CDT | Severe Thunderstorm Warning | MPX | Dodge, Freeborn, Steele | 44 min |
| Jul 11, 5:48 PM CDT | Severe Thunderstorm Warning | MPX | Wabasha, Winona | 42 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.