Alert archive / Montana / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 5, NWS Missoula, MT

June 15, 1996Beaverhead County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 15, 1996, 3:01 PM MDT for Beaverhead County, Montana. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 15, 1996, 3:01 PM MDT (21:01 UTC)
Expired: Jun 15, 1996, 4:00 PM MDT
In force: 59 min
Issued by: NWS Missoula, MT
Area: Whole counties

County Beaverhead County, MT

The radar

The Pocatello radar (KSFX), 226 km from the middle of the area, began a volume at 21:03 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 9.0 hours before the alert went out and 313 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1 J/kg
Mixed-layer CIN: -208 J/kg
Mixed-layer LCL: 1512 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 63 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 152103
SVRMSO
MTC001-152200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
301 PM MDT SAT JUN 15 1996
 
THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...                     ...
 
IN SOUTHWEST MONTANA
 
   ...SOUTHERN BEAVERHEAD COUNTY
 
MISSOULA WEATHER RADAR INDICATED A STRONG THUNDERSTORM 20 MILES TO THE
NORTHEAST OF THE TOWN OF LIMA. THIS STORM WAS MOVING TO THE NORTHEAST AT
10 MPH.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 15, 2:03 PM MDT, 58 minutes earlier.

Area forecast discussion, Jun 15, 2:03 PM MDT, 58 minutes before

88D AND SATELLITE ARE INDICATING RAPID THUNDERSTORM DEVELOPMENT. THE
HEAVIEST ACTIVITY WAS OVER WESTERN AND NORTHERN FLATHEAD COUNTY AND
BEAVERHEAD COUNTIES OF MONTANA...LEMHI COUNTY OF IDAHO. ANTICIPATING
THAT A FEW OF THESES STORMS WILL BECOME SEVERE IN THE NEXT COUPLE OF
HOURS. MODELS ARE SLOW ON POSITIONING OF S/WV APPROACHING THE
NORTHWEST WASHINGTON COAST...NEVER THE LESS MSO-ETA KEEPS MAIN S/WV
TO THE NORTHWEST OF OUR CWA...HOWEVER A WEAK S/WV COMES THROUGH OVER
NIGHT. ANOTHER WEAK S/WV MOVES ACROSS SOUTHWEST MONTANA AND THE EAST
CENTRAL MOUNTAINS OF IDAHO SUNDAY...SPELLING ANOTHER ROUND OF
CONVECTIVE WEATHER...MAINLY FROM HMM SOUTH THROUGH LEMHI AND
BEAVERHEAD COUNTIES. AVN SHOWING MAIN 5H LOW MOVING IN ALONG THE
WASHINGTON OREGON COAST BY 00Z TUESDAY...LOOKS LIKE ACTIVE WEATHER
INTO THE FIRST PART OF THE NEW WEEK.
TC

FCA 3124 048/080/048/075
LIB 2124 049/083/049/076
POL 2123 048/080/050/074
MSO 4223 051/081/052/077
HMM 3323 051/083/053/079
FN/04

In the hours before

Special weather statement, Jun 15, 1:16 PM MDT, 1 hour 45 minutes before

MTZ004-IDZ010-152100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
110 PM MDT SAT JUN 15 1996

...THUNDERSTORMS DEVELOPING OVER LEMHI COUNTY IN IDAHO AND BEAVERHEAD
   COUNTY IN MONTANA...

SATELLITE PICTURES AND WEATHER RADAR SHOW THUNDERSTORMS ARE
DEVELOPING OVER CENTRAL LEMHI COUNTY, IDAHO AND SOUTHERN BEAVERHEAD
COUNTY, MONTANA. ONE AREA OF STORMS WAS SITUATED IN THE TAYLOR
MOUNTAIN AREA OF LEMHI COUNTY. ANOTHER AREA OF STORM DEVELOPMENT WAS
AROUND THE CITY OF LIMA IN BEAVERHEAD COUNTY. THESE STORMS WERE
MOVING TO THE NORTHEAST AT 10 MPH.

THUNDERSTORMS ARE EXPECTED THROUGHOUT THE AFTERNOON. SOME OF THESE
STORMS MAY BECOME STRONG WITH GUSTY WINDS AND HAIL POSSIBLE.h

REMEMBER...ALL THUNDERSTORMS PRODUCE DEADLY LIGHTNING. IF A STORM
APPROACHES YOUR AREA SEEK SHELTER IMMEDIATELY.

FOSS

Special weather statement, Jun 15, 2:11 PM MDT, 50 minutes before

MTZ004-IDZ010-152100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
200 PM MDT SAT JUN 15 1996

...THUNDERSTORMS OVER LEMHI COUNTY IN IDAHO AND BEAVERHEAD COUNTY IN
MONTANA...

WEATHER RADAR IS INDICATING THUNDERSTORMS OVER LEMHI COUNTY. MODERATE
THUNDERSTORM ACTIVITY IS SHOWN IN SOUTHERN LEMHI COUNTY NEAR THE
PORTLAND MOUNTAIN AREA AND THERE WAS ANOTHER AREA OF THUNDERSTORMS
TWENTY MILES WEST OF SALMON. THESE STORMS WERE MOVING TO THE
NORTHEAST AT 10 MPH.

IN BEAVERHEAD COUNTY...MONTANA A LINE OF STRONG THUNDERSTORMS WAS
LOCATED HALFWAY BETWEEN THE CITIES OF DILLON AND LIMA. WEAKER STORMS
WERE DEVELOPING OVER THE NORTHERN HALF OF THE COUNTY AS WELL.

THESE STORMS THIS 0AFTERNOON HAVE THE POTENTIAL TO DEVELOP INTO SEVERE
THUNDERSTORMS WITH STRONG GUSTY WINDS, HAIL AND HEAVY RAINFALL. BE
AWARE OF THE WEATHER AROUND YOU AND SEEK SHELTER IF A STORM MOVES
INTO YOUR AREA.

FOSS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 8:33 PM MDT	Severe Thunderstorm Warning	MSO	Deer Lodge	57 min
Jun 15, 4:21 PM MDT	Severe Thunderstorm Warning	MSO	Granite	54 min
Jun 15, 5:17 PM MDT	Severe Thunderstorm Warning	MSO	Granite	43 min

Nearby

Severe Thunderstorm Warnings in Montana, 1996 Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.