Alert archive / Minnesota / Tornado Warnings in 1986

Tornado Warning 3, NWS Grand Forks, ND

June 26, 1986Otter Tail County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jun 26, 1986, 5:45 PM CDT for Otter Tail County, Minnesota. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Jun 26, 1986, 5:45 PM CDT (22:45 UTC)
Expired
Jun 26, 1986, 6:15 PM CDT
In force
30 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Otter Tail 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, 10.8 hours before the alert went out and 239 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 1986-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1777 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 1986-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1777 J/kg
Mixed-layer CIN
-197 J/kg
Mixed-layer LCL
1357 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 262245
TORFAR
MNC111-262315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE FARGO ND
545 PM CDT THU JUN 26 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 615 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

WEST CENTRAL MINNESOTA...WESTERN OTTER TAIL

AT 540 PM CDT...A FUNNEL CLOUD WAS REPORTED BY LAW ENFORECEMT
PERSONNEL 2 MILES EAST OF ROTHSAY MINNESOTA..ABOUT 40 MILES
SOUTHEAST OF FARGO.

IF A TORNADO IS APPROACHING GET INTO A BASEMENT...IF NO BASEMENT
IS AVAILABLE...GET INTO THE INNERMOST HALLWAY...STAY AWAY FROM
WINDOWS.  IF CAUGHT OUTSIDE GET INTO A DITCH...GULLY...RAVINE...OR
EVEN A LOW LYING SbPOT ON THE GROUND.  PROTECT YOUR HEAD.  ABANDON
CARS AND MOBILE HOMES.

ARMSTRONG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 3:54 PM CDTSevere Thunderstorm WarningFGFKoochiching66 min

Nearby

Tornado Warnings in Minnesota, 1986Every tornado warning in 1986Tornadoes 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.