Alert archive / Montana / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 89, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jul 23, 2008, 9:36 PM MDT for Cascade County, Lewis and Clark County, Meagher County, Montana. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 23, 2008, 9:36 PM MDT (03:36 UTC)
- Expired
- Jul 23, 2008, 10:30 PM MDT
- In force
- 54 min
- Issued by
- NWS Great Falls, MT
- Area
- Storm-based polygon
Counties Cascade County, MT, Lewis and Clark County, MT, Meagher County, MT
The radar
The Great Falls radar (KTFX), 51 km from the middle of the area, began a volume at 03:39 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 nearest sounding before it
Great_falls, MT (KTFX), launched 00:00Z, 3.6 hours before the alert went out and 87 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
- 2742 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 5:28 PM MDT, 4 hours 8 minutes earlier.
Area forecast discussion, Jul 23, 5:28 PM MDT, 4 hours 8 minutes before
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</html>Hazardous weather outlook, Jul 23, 5:23 AM MDT, 16 hours 13 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
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</html>The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 7:59 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 39 min |
| Jul 23, 8:54 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark | 51 min |
| Jul 23, 10:19 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 41 min |
| Jul 23, 10:25 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Judith Basin, Meagher | 50 min |
| Jul 23, 10:32 PM MDT | Tornado Warning | TFX | Pondera | 28 min |
| Jul 23, 10:55 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Toole | 50 min |
| Jul 23, 11:45 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 30 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2008Every severe thunderstorm warning in 2008
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.