Alert archive / Montana / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 2, NWS Missoula, MT

June 9, 2004Ravalli County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 9, 2004, 4:29 PM MDT for Ravalli County, Montana. It was in force for 46 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, 4:29 PM MDT (22:29 UTC)
Expired: Jun 9, 2004, 5:15 PM MDT
In force: 46 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), 93 km from the middle of the area, began a volume at 22:28 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.

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, 10.5 hours before the alert went out and 232 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: 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.

250 
WUUS55 KMSO 092229
SVRMSO
MTC081-092315-

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

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL RAVALLI COUNTY IN WEST CENTRAL MONTANA
  THIS INCLUDES THE CITY OF HAMILTON

* UNTIL 515 PM MDT

* AT 423 PM MDT...WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM
  NEAR DARBY...OR ABOUT 17 MILES SOUTH OF HAMILTON...MOVING NORTH AT
  40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HAMILTON BY 445 PM MDT
  WOODSIDE BY 450 PM MDT
  VICTOR BY 505 PM MDT
  STEVENSVILLE BY 510 PM MDT

LARGE HAIL IS LIKELY 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 4596 11438 4594 11413 4661 11398 4663 11433

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 4:00 PM MDT	Severe Thunderstorm Warning	MSO	Ravalli	45 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, 2004 Every 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.