Alert archive / Montana / Tornado Warnings in 1986

Tornado Warning 3, NWS Billings, MT

September 4, 1986Golden Valley County, Montana

NWS Billings, MT issued this tornado warning at Sep 4, 1986, 7:09 PM MDT for Golden Valley County, Montana. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Sep 4, 1986, 7:09 PM MDT (01:09 UTC)
Expired
Sep 4, 1986, 7:45 PM MDT
In force
36 min
Issued by
NWS Billings, MT
Area
Whole counties

County Golden Valley County, MT

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

Great_falls, MT (KTFX), launched 00:00Z, 1.2 hours before the alert went out and 162 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, Great_falls, MT at 00:00Z on 1986-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Great_falls, MT at 00:00Z on 1986-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3555 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
112 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 KBIL 050110
TORBIL
MTC037-050130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
709 PM MDT THU SEP 4 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 745 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

MONTANA...GOLDEN VALLEY

AT 700 PM MDT A FUNNEL CLOUD WAS SIGHTED 6 MILES NORTHEAST OF
SHAWMUT MONTANA...ON THE WHEATLAND/GOLDEN VALLEY COUNTY LINE.
RADAR SHOWS A VERY HEAVY THUNDERSTORM IN THIS AREA...MOVING
TO THE SOUTHEAST AT AROUND 25 MILES AN HOUR.


IF THREATENING WEATHER APPROACHES GO TO A SAFE PLACE IMMEDIATELY.
WHEN IT IS SAFE PLEASE ASK THE NEAREST LAW ENFORCEMENT AGENCY
TO RELAY YOUR SEVERE WEATHER REPORTS TO THE NgEAREST NATIONAL
WEATHER SERVICE OFFICE, OR CALL THE NATIONAL WEATHER SERVICE  AT
BILLINGS MONTANA. 406-657-6988
NOLL

The office that day

Everything else NWS Billings, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 4, 7:56 PM MDTTornado WarningBYZGolden Valley, Yellowstone34 min

Nearby

Tornado Warnings in Montana, 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.