Alert archive / Montana / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 30, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Aug 7, 2003, 11:39 PM MDT for Missoula County, Ravalli County, Montana. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2003, 11:39 PM MDT (05:39 UTC)
- Expired
- Aug 8, 2003, 12:30 AM MDT
- In force
- 51 min
- Issued by
- NWS Missoula, MT
- Area
- Counties, with a storm outline in the text
Counties Missoula County, MT, Ravalli County, MT
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 5.7 hours before the alert went out and 203 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
- 2238 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KMSO 080539 SVRMSO MTC063-081-080630- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 1139 PM MDT THU AUG 7 2003 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN MISSOULA COUNTY IN WEST CENTRAL MONTANA NORTHERN RAVALLI COUNTY IN WEST CENTRAL MONTANA * UNTIL 1230 AM MDT * AT 1139 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES SOUTHWEST OF FLORENCE...OR 22 MILES NORTH OF HAMILTON...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... OVER FLORENCE AT 1150 PM MDT 6 MILES SOUTHEAST OF LOLO AT 1210 AM MDT 7 MILES SOUTHEAST OF EAST MISSOULA...8 MILES SOUTHEAST OF MISSOULA AT 1230 AM MDT SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND HAIL...ALONG WITH FREQUENT LIGHTNING AND HEAVY RAIN. FOR YOUR PROTECTION...GO INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL PROTECTED AREA. LAT...LON 4660 11435 4647 11417 4684 11382 4696 11408
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 7, 9:00 PM MDT, 2 hours 39 minutes earlier.
Area forecast discussion, Aug 7, 9:00 PM MDT, 2 hours 39 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
900 PM MDT THU AUG 7 2003
.SHORT TERM...WILL UPDATE ZONES AND SFP TO DIMINISH SHOWERS AND
THUNDERSTORMS OVERNIGHT.
ONLY REMAINING THUNDERSTORMS THIS EVENING ARE SOUTH AND EAST OF A
LINE FROM MISSOULA TO SEELEY LAKE. THESE STORMS WILL SLOWLY
DISSIPATE AS WELL. HOWEVER...SHORTWAVE CAN BE SEEN ON WATER VAPOR
MAKING ITS WAY ACROSS SIERRAS TOWARD SOUTHEAST OREGON. THIS WILL
MOVE ACROSS NORTHERN ROCKIES OVERNIGHT. WITH LINGERING WEAK
INSTABILITY...COULD STILL SEE ISOLATED THUNDERSTORM DEVELOPMENT.
PREVIOUS FORECAST HAD THIS THINKING AND IT STILL LOOKS SOUND. ONLY
ADJUSTED TIMING.
NEW MESO ETA HAS SIMILAR CAPE VALUES BY EARLY AFTERNOON TOMORROW...
BUT SEEMS TO LACK ORGANIZED FORCING. LIKE IDEA OF EVEN LESS
ORGANIZED CONVECTION THAN WE SAW TODAY. WHITMORE
.LONG TERM...LOOKS LIKE MONDAY WILL BE THE TRANSITION DAY FROM
COOLING TO THE WEST AND NORTH AND STILL PRETTY WARM OVER THE
EASTERN AND SOUTHERN ZONES...AS THE SURFACE THERMAL TROUGH SHIFTS
OVER THE REGION TO NEAR THE DIVIDE. BY TUESDAY...THE THERMAL TROUGH
SHIFTS EAST OF THE DIVIDE FOR COOLING THROUGHOUT THE AREA
WITH BREEZY AFTERNOON AND EVENING WINDS. EXTENDED MODELS FAIRLY
CONSISTENT SHIFTING THE OFFSHORE CUTOFF LOW PRESSURE SYSTEM OVER THE
PACIFIC NORTHWEST BY WEDNESDAY MORNING...AND THEN OVER THE NORTHERN
ROCKIES ON THURSDAY. HENCE...THURSDAY SHOULD BE THE WETTEST...COOLEST
AND BREEZY DAY THROUGH THE PERIOD. WILL KEEP SLIGHT CHANCE OF
AFTERNOON AND EVENING CONVECTION MONDAY AND TUESDAY. THUNDERSTORM
CHANCES WILL INCREASE WEDNESDAY AFTERNOON AND EVENING WITH CHANCE OF
RAIN SHOWERS MOST AREAS THURSDAY. FELSCH
.MSO...NONE.
...7-DAY SPOT TEMPS AND POPS...
LIB BBB 053/094 053/097 055/099 33111122
BBEE 060/089 053/083 053/083 053/081 3022222333
FCA BBB 049/088 051/090 053/094 33111122
BBEE 057/087 050/081 050/081 050/078 3022222333
POL BBB 062/089 062/091 063/095 33122112
BBEE 060/088 053/082 053/082 053/080 3022222333
MSO BBB 051/090 053/093 055/096 33111112
BBBB 059/089 052/083 052/083 052/082 3022222333
HMM BBB 053/091 054/094 056/097 33211112
BBBB 060/093 053/084 053/084 053/081 3022222333
BTM BBB 046/087 049/091 051/095 33222221
BBBB 054/092 047/082 047/085 047/078 3012233333
ORO BBB 061/095 063/098 064/098 33011112
BBEE 061/091 058/085 058/085 058/084 3022222332
GRV BBB 052/089 053/094 057/093 33011112
BBBB 059/086 052/080 052/080 052/078 3022222332
SMN BBB 048/090 052/093 053/094 33122112
BBBB 059/091 052/084 052/087 052/082 3022222333Hazardous weather outlook, Aug 7, 6:00 AM MDT, 17 hours 39 minutes before
MTZ001>007-043-IDZ005>010-081200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MISSOULA MT 600 AM MDT THU AUG 7 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MONTANA AND NORTH CENTRAL IDAHO .DAY ONE... TODAY SCATTERED THUNDERSTORMS CAN BE EXPECTED ACROSS NORTH-CENTRAL IDAHO AND WEST-CENTRAL MONTANA TODAY THROUGH THIS EVENING. THE ATMOSPHERE REMAINS UNSTABLE TO SUPPORT THUNDERSTORM DEVELOPMENT WITH SOME POTENTIALLY GUSTY WINDS AND HAIL. .DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
Nearby
Severe Thunderstorm Warnings in Montana, 2003Every severe thunderstorm warning in 2003
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.