Alert archive / Montana / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 59, NWS Billings, MT

June 16, 2007Stillwater County, Yellowstone County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 16, 2007, 5:25 PM MDT for Stillwater County, Yellowstone County, Montana. It was in force for 65 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: Jun 16, 2007, 5:25 PM MDT (23:25 UTC)
Expired: Jun 16, 2007, 6:30 PM MDT
In force: 65 min
Issued by: NWS Billings, MT
Area: Counties, with a storm outline in the text

Counties Stillwater County, MT, Yellowstone County, MT

The radar

The Billings radar (KBLX), 19 km from the middle of the area, began a volume at 23:25 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 16, 2:18 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 11.4 hours before the alert went out and 228 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: 9 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1294 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 16, 2:34 PM MDT, 2 hours 51 minutes earlier.

Area forecast discussion, Jun 16, 2:34 PM MDT, 2 hours 51 minutes before

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Hazardous weather outlook, Jun 16, 2:22 PM MDT, 3 hours 3 minutes before

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In the hours before

Local storm report, Jun 16, 3:24 PM MDT, 2 hours 1 minute before

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Local storm report, Jun 16, 3:54 PM MDT, 1 hour 31 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 12:49 AM MDT	Severe Thunderstorm Warning	BYZ	Powder River	26 min
Jun 16, 1:11 AM MDT	Severe Thunderstorm Warning	BYZ	Carter	64 min
Jun 16, 2:17 AM MDT	Severe Thunderstorm Warning	BYZ	Carter	27 min
Jun 16, 4:41 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Stillwater, Sweet Grass	49 min

Nearby

Severe Thunderstorm Warnings in Montana, 2007 Every severe thunderstorm warning in 2007

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.