Alert archive / Montana / Severe Thunderstorm Warnings in 1988

Severe Thunderstorm Warning 8, NWS Missoula, MT

June 28, 1988Granite County, Missoula County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 28, 1988, 4:19 PM MDT for Granite County, Missoula County, Montana. It was in force for 86 min.

The area

The counties it named.

The facts

Issued
Jun 28, 1988, 4:19 PM MDT (22:19 UTC)
Expired
Jun 28, 1988, 5:45 PM MDT
In force
86 min
Issued by
NWS Missoula, MT
Area
Whole counties

Counties Granite County, MT, Missoula 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, 10.3 hours before the alert went out and 199 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 1988-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 62 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 1988-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
62 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1380 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 9:47 AM MDTSevere Thunderstorm WarningMSOMineral, Sanders58 min
Jun 28, 10:58 AM MDTSevere Thunderstorm WarningMSOFlathead, Lincoln62 min
Jun 28, 1:55 PM MDTSevere Thunderstorm WarningMSOLake, Mineral, Missoula, Sanders2 hr
Jun 28, 2:35 PM MDTSevere Thunderstorm WarningMSOGranite, Ravalli115 min
Jun 28, 2:37 PM MDTSevere Thunderstorm WarningMSOFlathead2 hr

Nearby

Severe Thunderstorm Warnings in Montana, 1988Every severe thunderstorm warning in 1988

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.