Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 18, NWS Grand Forks, ND

June 17, 1986Douglas County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 17, 1986, 4:35 PM CDT for Douglas County, Minnesota. It was in force for 25 min.

The area

The counties it named.

The facts

Issued: Jun 17, 1986, 4:35 PM CDT (21:35 UTC)
Expired: Jun 17, 1986, 5:00 PM CDT
In force: 25 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Douglas 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, 9.6 hours before the alert went out and 188 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1303 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 172136
SVRFAR
MNC041-172200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FARGO ND
435 PM CDT TUE JUN 17 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF

WEST CENTRAL MINNESOTA...DOUGLAS AND THE CITY OF ALEXANDRIA

AT 425 PM CDT 3/4 INCH REPORTED AT KENSINGTON MINNESOTA..15 MILES
WEST OF ALEXANDRIA MINNESOTA.

REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 58 MPH AND/OR HAIL 3/4 OF AN INCH OR LARGER...DEADLY LIGHTNING...
AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA.

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING...SO YOU SHOULD BE ON THE LOOKOUT AND BE
PREPARED TO MOVE TO A PLACE OF SAFETY.

IF THREATENING WEATHER APPROACHES...YOU SHOULD GO TO A PLACE OF
SAFETY IMMEDIATELY.  REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW
ENF4ORCEMENT AGENCY AFTER THE STORM PASSES.
BENNETT

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

Local storm report, Jun 17, 4:12 PM CDT, 23 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
400 PM CDT TUE JUN 17 1986

TIME      EVENT
330 PM    OTTERTAIL COUNTY MN REPORTED 3/4 INCH HAIL AT ELBOW LAKE MN
          25 MILES WEST OF ALEXANDRIA MN

345 PM    GRANT COUNTY SHERIFF REPORTED 3/4 INCH HAIL AT HOFFMAN MN
          18 MILES WEST OF ALEXANDRIA MN

346 PM    DOUGLAS COUNTY MN SHERIFF REPORTED PEAS SIZE HAIL AND VERY
          HEAVY RAIN AT KENSINGTON MN 15 MILES WEST OF ALEXANDRIA MN

357 PM    ALEXANDRIA MN PD REPORTED GOLFBALL SIZE HAIL AT KENSINGTON MN
          15 MILES WEST OF ALEXANDRIA MN

358 PM    ALEXANDRIA MN PD REPORTED A FUNNEL CLOUD BY PUBLIC ABOUT 5
          MILES NORTH OF GARFIELD MN 10 MILES WEST OF ALEXANDRIA MN
          (FARGO SVR OUT UNTIL 430 PM)

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 3:38 PM CDT	Severe Thunderstorm Warning	FGF	Douglas, Grant	52 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1986 Every severe thunderstorm warning in 1986

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.