Alert archive / Montana / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 4, NWS Missoula, MT

June 9, 2004Ravalli County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 9, 2004, 5:04 PM MDT for Ravalli County, Montana. It was in force for 11 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, 5:04 PM MDT (23:04 UTC)
Expired
Jun 9, 2004, 5:15 PM MDT
In force
11 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), 60 km from the middle of the area, began a volume at 23:03 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 9, 2:40 PM MDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.1 hours before the alert went out and 223 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, Spokane, WA at 12:00Z on 2004-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Spokane, WA at 12:00Z on 2004-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.19395878Sfc1 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
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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

130 
WUUS55 KMSO 092304
SVRMSO
MTC081-092315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
504 PM MDT WED JUN 9 2004

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN RAVALLI COUNTY IN WEST CENTRAL MONTANA

* UNTIL 515 PM MDT

* AT 458 PM MDT...WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM
  NEAR STEVENSVILLE...OR ABOUT 14 MILES NORTH OF HAMILTON...MOVING
  NORTH AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FLORENCE BY 510 PM MDT

LARGE HAIL HAS BEEN REPORTED WITH THIS SEVERE THUNDERSTORM. DAMAGING WINDS 
IN EXCESS OF 55 MPH ARE POSSIBLE...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 4641 11408 4642 11418 4654 11416 4664 11409
          4665 11383 4656 11386 4638 11397

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 4:00 PM MDTSevere Thunderstorm WarningMSORavalli45 min
Jun 9, 4:29 PM MDTSevere Thunderstorm WarningMSORavalli46 min
Jun 9, 4:35 PM MDTSevere Thunderstorm WarningMSOMissoula40 min
Jun 9, 5:14 PM MDTSevere Thunderstorm WarningMSOLake46 min
Jun 9, 5:20 PM MDTSevere Thunderstorm WarningMSOMissoula40 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.