Alert archive / Montana / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 33, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Aug 1, 1996, 9:42 PM MDT for Powell County, Montana. It was in force for 33 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
- Aug 1, 1996, 9:42 PM MDT (03:42 UTC)
- Expired
- Aug 1, 1996, 10:15 PM MDT
- In force
- 33 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
County Powell County, MT
The radar
The Missoula radar (KMSX), 82 km from the middle of the area, began a volume at 03:42 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 00:00Z, 3.7 hours before the alert went out and 189 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3905 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSO 020339 SVRMSO MTC077-020415- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 942 PM MDT THU AUG 1 1996 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... ... IN WEST CENTRAL MONTANA ...NORTHERN POWELL COUNTY AT 940PM MDT A SEVERE THUNDERSTORM WAS OVER SEELEY LAKE CROSSING INTO NORTHERN POWELL COUNTY INTO THE BOB MARSHALL WILDERNESS. THIS STORM HAS A HISTORY OF PRODUCING THERR-QUARTER INCH HAIL...HEAVY RAIN AND STRONG GUSTY WINDS. THE STORM MOVEMENT WAS TO THE NORTHEAST AT 25 MILES AN HOUR. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. BAILEY
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 Aug 1, 7:55 PM MDT, 1 hour 47 minutes earlier.
Area forecast discussion, Aug 1, 7:55 PM MDT, 1 hour 47 minutes before
CONVECTION STILL GOING OVER MT ZONES 2/4...IDAHO ZONES 10/11. MORE STORMS FIRING OVER WEST CENTRAL ID AHEAD OF VORT MAX ROTATING THROUGH CENTRAL OREGON. THESE STORMS SHOULD LOSE SOME OF THEIR PUNCH AFTER SUNSET...BUT DO EXPECT SOME ACTIVITY TO LINGER OVER ZONES 2/4 INTO EARLY TONIGHT. WILL BUMP UP POPS IN ZONE 2...MOST ACTIVITY IN ZONE 1 SHOULD BE CONFINED TO EXTREME SOUTH. LARGE UPPER TROF CONTINUES TO DIG TOWARD PACIFIC NW. ASSOCIATED COLD FRONT EXPECTED TO MOVE THROUGH AREA BY 18Z...WITH BEST MOISTURE AND DYNAMICS FOLLOWING. LOOKS LIKE COOL AND SHOWERY REGIME THROUGH SATURDAY. SFC DEWPOINTS FAIRLY HIGH THIS EVENING AND WITH APPROACHING TROF...THINK MINS TONIGHT WILL BE SEVERAL DEGREES ABOVE LAST NIGHT. WILL RAISE A FEW DEGREES. SULLIVAN FCA 1245 049/076/050/065 LIB 1345 048/075/048/064 POL 2244 056/078/054/066 MSO 3244 054/080/050/068 HMM 3233 055/082/050/070 FN/11
In the hours before
Special weather statement, Aug 1, 3:42 PM MDT, 6 hours before
MTZ001-002-004-IDZ009-010-011-020600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 335 PM MDT (235 PM PDT) THU AUG 1 1996 ...A COLD WEEKEND ON ITS WAY... A QUITE COLD AREA OF LOW PRESSURE OVER THE GULF OF ALASKA WILL PUSH INTO THE PACIFIC NORTHWEST OVER THE WEEKEND. A COLD FRONT WILL MOVE THROUGH NORTHERN IDAHO AND WESTERN MONTANA ON FRIDAY BRINGING THE INITIAL SURGE OF COLD AIR. MUCH COOLER TEMPERATURES...SCATTERED RAIN SHOWERS AND GUSTY WINDS WILL ARRIVE LATE FRIDAY AND CONTINUE INTO THE REMAINDER OF THE WEEKEND. THE UNSEASONABLY COLD AIR WILL ALLOW A RARE MID-SUMMER SNOW TO FALL OVER THE HIGHER MOUNTAINS...ESPECIALLY THE MOUNTAINS IN GLACIER NATIONAL PARK. IF YOjU ARE PLANNING ANY OUTDOOR ACTIVITIES THIS WEEKEND BE PREPARED FOR A CHANGE TO MUCH COOLER WEATHER. STAY TUNED FOR FURTHER UPDATES AND ADDITIONAL WEATHER INFORMATION. BELTZ
Special weather statement, Aug 1, 5:35 PM MDT, 4 hours 7 minutes before
MTZ004-IDZ010-011-020240- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 540 PM MDT (440 PM PDT) THU AUG 1 1996 ...THUNDERSTORMS CONTINUE OVER SOUTHWEST MONTANA AND NORTH CENTRAL IDAHO... THUNDERSTORMS CONTINUE OVER PARTS OF BEAVERHEAD...SILVER BOW AND DEER LODGE COUNTIES IN MONTANA AND LEMHI AND IDAHO COUNTIES IN IDAHO. THE STRONGEST STORMS ARE IN SOUTHEAST BEAVERHEAD COUNTY. THESE STORMS ARE MOVING TO THE NORTHEAST AT 3:0 MPH AND MAY CONTAIN HAIL...BRIEF HEAVY RAIN AND GUSTY WINDS. IF THREATENING WEATHER APPROACHES YOUR AREA MOVE INDOORS IMMEDIATELY. REMEMBER...LIGHTNING CAN KILL. LUDWIG
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 8:12 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 48 min |
| Aug 1, 9:07 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 38 min |
Nearby
Severe Thunderstorm Warnings in Montana, 1996Every 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.