Alert archive / Montana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 2, NWS Missoula, MT

June 4, 1986Lake County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 4, 1986, 2:54 PM MDT for Lake County, Montana. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Jun 4, 1986, 2:54 PM MDT (20:54 UTC)
Expired
Jun 4, 1986, 3:30 PM MDT
In force
36 min
Issued by
NWS Missoula, MT
Area
Whole counties

County Lake 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

Spokane, WA (KOTX), launched 12:00Z, 8.9 hours before the alert went out and 173 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, Spokane, WA at 12:00Z on 1986-06-04Temperature 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, Spokane, WA at 12:00Z on 1986-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
3599 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
36 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 KMSO 042054
SVRMSO
MTC063-061-089-047-042330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
254 PM MDT WED JUN 4 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 530 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

WEST CENTRAL MONTANA...MISSOULA...MINERAL...SANDERS AND LAKE

HEAVY THUNDERSTORMS WITH ONE INCH HAIL, GUSTY WINDS AND HEAVY
RAN HAS BEEN REPORTED SOUTHERN PARTS OF LAKE COUNTY. ALSO
RADAR SHOWS SCATTERED STRONG THUNDERSTORMS IN SANDERS AND
MINERAL COUNTIES. THESE THUNDERSTROMS ARE MOVING FROM THE WEST
AT 25 MPH AND SHOULD MOVE INTO NORTHERN PARTS OF MISSOULA
COUNTY DURING THE NEXT FEW HOURS.

 THIS STORM IS ACCOMPANIED BY INTENSE LIGHTNING AND STRONG
 GUSTY WINDS.

 THIS STORM MAY CONTAIN LARGE DAMAGING HAIL AS WELL AS STRONG
 GUSTY WIND..LOCALLY HEAVY RAIN..AND INTENSE LIGHTNING.

 IF THREATENING WEATHER APPROACHES...TAKE COV7ER IMMEDIATELY!
 ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY ANY SEVERE WEATHER
 REPORTS YOU MIGHT HAVE TO THE NATIONAL WEATHER SERVICE OR CALL
 THE WEATHER SERVICE IN MISSOULA DIRECT ON 329-4841.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 2:54 PM MDTSevere Thunderstorm WarningMSOMineral, Missoula, Sanders36 min
Jun 4, 4:28 PM MDTSevere Thunderstorm WarningMSOLewis and Clark, Powell62 min
Jun 4, 5:30 PM MDTSevere Thunderstorm WarningMSOGranite60 min
Jun 4, 5:38 PM MDTSevere Thunderstorm WarningMSOLewis and Clark22 min
Jun 4, 5:47 PM MDTSevere Thunderstorm WarningMSOPowell58 min

Nearby

Severe Thunderstorm Warnings in Montana, 1986Every 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.