Alert archive / Montana / Mesoscale Discussions in 2004
Mesoscale Discussion 1098
The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2004, 12:21 PM PDT for 4 counties in Idaho; 35 counties in Montana. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Jun 5, 2004, 12:21 PM PDT (19:21 UTC)
- Expired
- Jun 5, 2004, 2:15 PM PDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 39 counties
Clearwater County, ID, Idaho County, ID, Lemhi County, ID, Shoshone County, ID, Beaverhead County, MT, Blaine County, MT, Broadwater County, MT, Cascade County, MT, Chouteau County, MT, Deer Lodge County, MT, Fergus County, MT, Flathead County, MT, Gallatin County, MT, Glacier County, MT, Golden Valley County, MT, Granite County, MT, Hill County, MT, Jefferson County, MT, Judith Basin County, MT, Lake County, MT, Lewis and Clark County, MT, Liberty County, MT, Madison County, MT, Meagher County, MT, Mineral County, MT, Missoula County, MT, Musselshell County, MT, Park County, MT, Petroleum County, MT, Phillips County, MT, Pondera County, MT, Powell County, MT, Ravalli County, MT, Sanders County, MT, Silver Bow County, MT, Sweet Grass County, MT, Teton County, MT, Toole County, MT, Wheatland County, MT
The radar
The Missoula radar (KMSX), 88 km from the middle of the area, began a volume at 19:24 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 7.4 hours before the alert went out and 188 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
- 1736 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -50 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 3:05 PM PDT | Severe Thunderstorm Watch | SPC | Broadwater, Cascade, Chouteau, Glacier, Hill, Jefferson and 9 more | 6 hr |
Nearby
Mesoscale Discussions in Montana, 2004Mesoscale Discussions in Idaho, 2004Every mesoscale discussion 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.