Alert archive / Montana / Special Weather Statements in 2009

Special Weather Statement, NWS Billings, MT

August 6, 2009Park County, Montana

NWS Billings, MT issued this special weather statement at Aug 6, 2009, 2:39 PM MDT for Park County, Montana. It was in force for 51 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: Aug 6, 2009, 2:39 PM MDT (20:39 UTC)
Expired: Aug 6, 2009, 3:30 PM MDT
In force: 51 min
Issued by: NWS Billings, MT

County Park County, MT

The radar

The Billings radar (KBLX), 172 km from the middle of the area, began a volume at 20:41 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 12:00Z, 8.7 hours before the alert went out and 210 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: 1271 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: -47 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.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 6, 9:18 AM MDT, 5 hours 21 minutes earlier.

Area forecast discussion, Aug 6, 9:18 AM MDT, 5 hours 21 minutes before

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Hazardous weather outlook, Aug 6, 2:11 PM MDT, 28 minutes before

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In the hours before

Special weather statement, Aug 6, 2:39 PM MDT, 0 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
Aug 6, 4:41 AM MDT	Special Weather Statement	BYZ	Rosebud	49 min
Aug 6, 5:27 AM MDT	Special Weather Statement	BYZ		63 min
Aug 6, 6:02 AM MDT	Special Weather Statement	BYZ	Powder River	58 min
Aug 6, 6:48 AM MDT	Special Weather Statement	BYZ	Powder River	57 min
Aug 6, 7:46 AM MDT	Special Weather Statement	BYZ	Carter	59 min
Aug 6, 3:35 PM MDT	Special Weather Statement	BYZ	Sweet Grass	55 min
Aug 6, 4:06 PM MDT	Severe Thunderstorm Warning	BYZ	Sweet Grass	54 min
Aug 6, 4:44 PM MDT	Special Weather Statement	BYZ	Yellowstone	61 min
Aug 6, 5:00 PM MDT	Severe Thunderstorm Warning	BYZ	Stillwater, Sweet Grass	60 min
Aug 6, 5:12 PM MDT	Special Weather Statement	BYZ	Sweet Grass	63 min
Aug 6, 5:31 PM MDT	Special Weather Statement	BYZ	Carbon	59 min
Aug 6, 5:51 PM MDT	Special Weather Statement	BYZ	Yellowstone	54 min
Aug 6, 5:59 PM MDT	Severe Thunderstorm Warning	BYZ	Stillwater	61 min

Nearby

Special Weather Statements in Montana, 2009 Every special weather statement in 2009

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.