Alert archive / Montana / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 1, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Jun 9, 2004, 4:00 PM MDT for Ravalli County, Montana. It was in force for 45 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
- Jun 9, 2004, 4:00 PM MDT (22:00 UTC)
- Expired
- Jun 9, 2004, 4:45 PM MDT
- In force
- 45 min
- Issued by
- NWS Missoula, MT
- Area
- Counties, with a storm outline in the text
County Ravalli County, MT
The radar
The Missoula radar (KMSX), 75 km from the middle of the area, began a volume at 22:04 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.
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 9, 2:40 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 10.0 hours before the alert went out and 218 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
- 1395 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
302
WUUS55 KMSO 092200
SVRMSO
MTC081-092245-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
358 PM MDT WED JUN 9 2004
THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN RAVALLI COUNTY IN WEST CENTRAL MONTANA
* UNTIL 445 PM MDT
* AT 354 PM MDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 13
MILES SOUTHWEST OF VICTOR...OR ABOUT 9 MILES WEST OF HAMILTON...
MOVING NORTHEAST AT 45 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
VICTOR BY 410 PM MDT
STEVENSVILLE BY 415 PM MDT
FLORENCE BY 425 PM MDT
THIS SEVERE THUNDERSTORM WILL PRODUCE DAMAGING WINDS TO 60 MPH AND
LARGE 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 4626 11442 4637 11441 4664 11426 4664 11395
4637 11412 4620 11426
$$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 9, 3:06 PM MDT, 54 minutes earlier.
Area forecast discussion, Jun 9, 3:06 PM MDT, 54 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
306 PM MDT WED JUN 9 2004
UPDATED HIGHLIGHTS BELOW
.SHORT TERM...TONIGHT THROUGH FRIDAY...MAIN FORECAST CHALLENGE IS
THUNDERSTORM POTENTIAL THIS EVENING AND TONIGHT. SOUTHERLY FLOW WILL
CONTINUE TO CLEAR OUT THE VALLEY STRATUS THIS AFTERNOON. AS IT DOES
THUNDERSTORMS WILL BEGIN TO DEVELOP. SATELLITE AND RADAR SHOW
THUNDERSTORM DEVELOPMENT ALREADY OVER CENTRAL IDAHO. MAIN
THUNDERSTORM THREATS IN NORTHWESTERN MONTANA AND CENTRAL IDAHO WILL
BE GUSTY WINDS...SPORATIC HEAVY RAIN...AND HAIL. SEVERE BURN AREAS
WILL HAVE TO BE MONITORED THIS EVENING FOR FLASH FLOODING. AS THE LOW
PRESSURE SYSTEM MOVES OUT OF THE AREA TOMORROW...GULF MOISTURE
TRAINING INTO THE LOW ACROSS THE GREAT PLAINS IS EXPECTED TO WRAP
AROUND THE LOW BACK INTO OUR AREA...BRINGING WIDESPREAD SHOWERS. A
RELATIVELY COOL UPPER TROUGH OF LOW PRESSURE WILL SWING ACROSS THE
REGION FRIDAY. UNDER THIS FLOW REGIME THE HIGHER TERRAIN OF NORTHWEST
MONTANA AND NORTHCENTRAL IDAHO SHOULD SEE THE MOST SHOWER ACTIVITY.
FRIDAY NIGHT AND SATURDAY...WEAK HIGH PRESSURE SHOULD RETURN WITH THE
AIR MASS SLOWLY DRYING AND STABILIZING.
.LONG TERM...A FAIRLY MOIST WESTERLY FLOW SHOULD PUNCH INTO
NORTHWEST MONTANA SUNDAY. THE NEW GFS AND ECMWF MODELS SHOW THIS
MORE ZONAL FLOW. HOWEVER...RELATIVELY DRY AND STABLE CONDITIONS
SHOULD PREVAIL ELSEWHERE. THE MAIN STORM TRACK MAY SHIFT NORTHWARD
MONDAY INTO MID WEEK ALLOWING HIGH PRESSURE AND A WARMER AIR MASS TO
BUILD INTO THE REGION.
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...SEVERE THUNDERSTORM WATCH UNTIL 9 PM MDT...SEE GTFSLSMT FOR
DETAILS...
...FLASH FLOOD WATCH FOR SEVERELY BURNED AREAS UNTIL 9 PM MDT...SEE
GTFFFAMSO FOR DETAILS...
ID...SEVERE THUNDERSTORM WATCH UNTIL 9 PM MDT...SEE GTFSLSMT FOR
DETAILS...
&&
SHORT TERM/BOLDT/STEGEMILLER
LONG TERM/BAUCKHazardous weather outlook, Jun 9, 9:42 AM MDT, 6 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MISSOULA MT 941 AM MDT (841 AM PDT) WED JUN 9 2004 IDZ006>010-MTZ005>007-043-100600- SOUTHERN CLEARWATER MOUNTAINS-OROFINO/GRANGEVILLE REGION- LOWER HELLS CANYON/SALMON RIVER-WESTERN LEMHI COUNTY- EASTERN LEMHI COUNTY-MISSOULA/BITTERROOT VALLEYS- BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/PINTLAR REGION-BLACKFOOT REGION- 941 AM MDT (841 AM PDT) WED JUN 9 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL IDAHO AND WESTERN MONTANA .DAY ONE... TODAY LOW PRESSURE SYSTEM MOVING THROUGH THE AREA TODAY HAS THE POTENTIAL TO PRODUCE WIDESPREAD THUNDERSTORMS. STRONG WINDS AND HAIL WILL BE POSSIBLE WITH STORMS IN SOUTHWEST MONTANA AND CENTRAL IDAHO. .DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 4:29 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 46 min |
| Jun 9, 4:35 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 40 min |
| Jun 9, 5:04 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 11 min |
| Jun 9, 5:14 PM MDT | Severe Thunderstorm Warning | MSO | Lake | 46 min |
| Jun 9, 5:20 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 40 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2004Every severe thunderstorm warning in 2004
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.