Alert archive / Montana / Special Weather Statements in 2012

Special Weather Statement, NWS Billings, MT

August 2, 2012Carter County, Montana

NWS Billings, MT issued this special weather statement at Aug 2, 2012, 4:41 PM MDT for Carter County, Montana. It was in force for 34 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 2, 2012, 4:41 PM MDT (22:41 UTC)
Expired: Aug 2, 2012, 5:15 PM MDT
In force: 34 min
Issued by: NWS Billings, MT

County Carter County, MT

The radar

The Rapid City radar (KUDX), 151 km from the middle of the area, began a volume at 22:43 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

Rapid City, SD (KRAP), launched 12:00Z, 10.7 hours before the alert went out and 152 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: 2040 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -120 m²/s²
0-3 km storm-relative helicity: -117 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 2, 3:09 PM MDT, 1 hour 32 minutes earlier.

Area forecast discussion, Aug 2, 3:09 PM MDT, 1 hour 32 minutes before

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Hazardous weather outlook, Aug 2, 3:59 PM MDT, 42 minutes before

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In the hours before

Local storm report, Aug 2, 2:07 PM MDT, 2 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
207 PM MDT THU AUG 02 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0158 PM     HAIL             3 SSE EPSIE             45.44N 105.63W
08/02/2012  E1.75 INCH       POWDER RIVER       MT   COCORAHS

&&

VICKIES

Special weather statement, Aug 2, 2:52 PM MDT, 1 hour 49 minutes before

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Local storm report, Aug 2, 3:10 PM MDT, 1 hour 31 minutes before

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Special weather statement, Aug 2, 3:55 PM MDT, 46 minutes before

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Local storm report, Aug 2, 4:15 PM MDT, 26 minutes before

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Special weather statement, Aug 2, 4:41 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 2, 1:33 PM MDT	Special Weather Statement	BYZ	Powder River	57 min
Aug 2, 1:46 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River	59 min
Aug 2, 1:59 PM MDT	Severe Thunderstorm Warning	BYZ	Carter, Custer, Fallon	59 min
Aug 2, 2:19 PM MDT	Severe Thunderstorm Warning	BYZ	Carter, Powder River	56 min
Aug 2, 2:52 PM MDT	Special Weather Statement	BYZ	Fallon	53 min
Aug 2, 3:15 PM MDT	Severe Thunderstorm Warning	BYZ	Carter, Powder River	26 min
Aug 2, 3:55 PM MDT	Special Weather Statement	BYZ	Carter	65 min

Nearby

Special Weather Statements in Montana, 2012 Every special weather statement in 2012

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.