Alert archive / Montana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 7, NWS Missoula, MT

June 5, 1986Granite County, Ravalli County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 5, 1986, 1:46 PM MDT for Granite County, Ravalli County, Montana. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Jun 5, 1986, 1:46 PM MDT (19:46 UTC)
Expired
Jun 5, 1986, 2:45 PM MDT
In force
59 min
Issued by
NWS Missoula, MT
Area
Whole counties

Counties Granite County, MT, Ravalli 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 (KGTF), launched 12:00Z, 7.8 hours before the alert went out and 233 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 12:00Z on 1986-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 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, Great Falls, MT at 12:00Z on 1986-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 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
50 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
1187 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
81 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 051946
SVRMSO
MTC081-039-052045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
146 PM MDT THU JUN 5 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 245 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

WEST CENTRAL MONTANA...RAVALLI...GRANITE AND CITY OF HAMILTON

  A SEVERE THUNDERSTORM HAS BEEN SPOTTED IN THE WEST FORK
AREA  SOUTH OF DARBY AND ANOTHER IN THE ROCK CREEK DRAINAGE
WEST OF PHILIPSBURG AT ABOUT 1 30 PM TODAY.  UP TO 1 1/2
INCHES OF RAIN AND UP TO 1 INCH SIZE HAIL WERE REPORTED WITH
THESE STORMS.

 IF THREATENING WEATHER APPROACHES...TAKE COVER 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 5, 2:12 PM MDTSevere Thunderstorm WarningMSOBeaverhead, Deer Lodge, Silver Bow48 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.