Alert archive / Minnesota / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 33, NWS Twin Cities, MN

July 10, 1987Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 10, 1987, 10:00 PM CDT for Todd County, Minnesota. It was in force for 60 min.

The area

The counties it named.

The facts

Issued: Jul 10, 1987, 10:00 PM CDT (03:00 UTC)
Expired: Jul 10, 1987, 11:00 PM CDT
In force: 60 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Todd 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, 3.0 hours before the alert went out and 169 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2006 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1402 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTC 110307
SVRSTC
MNC153-110400-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MN
1000 PM CDT FRI JUL 10 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1100 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY OF 

CENTRAL MINNESOTA...TODD...INCLUDING THE CITIES OF LONG PRAIRIE...
BROWERVILLE AND CLARISSA.

AT 1000 PM CDT A SEVERE THUNDERSTORM WAS IN PROGRESS NORTHEAST OF   
OSAKIS WHICH IS 15 MILES EAST OF ALEXANDRIA MINNESOTA.

RADAR SHOWED THIS SEVERE THUNDERSTORM MOVING TO THE NORTHEAST AT
30 MPH.                                            

REMEMBER SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS..LARGE
HAIL AND FREQUENT LIGHTNING STRIKES. 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.

YOUNG

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
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	Hennepin, Sherburne	21 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, 1987 Every 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.