Alert archive / Montana / Special Weather Statements in 2013

Special Weather Statement, NWS Billings, MT

September 5, 2013Sweet Grass County, Montana

NWS Billings, MT issued this special weather statement at Sep 5, 2013, 10:21 PM MDT for Sweet Grass County, Montana. It was in force for 39 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: Sep 5, 2013, 10:21 PM MDT (04:21 UTC)
Expired: Sep 5, 2013, 11:00 PM MDT
In force: 39 min
Issued by: NWS Billings, MT

County Sweet Grass County, MT

The radar

The Billings radar (KBLX), 90 km from the middle of the area, began a volume at 04:22 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, 4.4 hours before the alert went out and 187 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: 1752 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 65 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 Sep 5, 8:51 PM MDT, 1 hour 30 minutes earlier.

Area forecast discussion, Sep 5, 8:51 PM MDT, 1 hour 30 minutes before

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Hazardous weather outlook, Sep 5, 8:35 PM MDT, 1 hour 46 minutes before

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In the hours before

Special weather statement, Sep 5, 8:38 PM MDT, 1 hour 43 minutes before

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Local storm report, Sep 5, 8:46 PM MDT, 1 hour 35 minutes before

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Local storm report, Sep 5, 8:49 PM MDT, 1 hour 32 minutes before

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Special weather statement, Sep 5, 8:57 PM MDT, 1 hour 24 minutes before

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Special weather statement, Sep 5, 9:38 PM MDT, 43 minutes before

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Special weather statement, Sep 5, 10:21 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
Sep 5, 6:04 PM MDT	Special Weather Statement	BYZ	Musselshell	26 min
Sep 5, 6:48 PM MDT	Special Weather Statement	BYZ	Rosebud	42 min
Sep 5, 7:36 PM MDT	Special Weather Statement	BYZ	Rosebud	54 min
Sep 5, 8:38 PM MDT	Special Weather Statement	BYZ	Custer	52 min
Sep 5, 8:57 PM MDT	Special Weather Statement	BYZ	Park	33 min
Sep 5, 9:38 PM MDT	Special Weather Statement	BYZ	Park	37 min
Sep 5, 10:26 PM MDT	Special Weather Statement	BYZ	Yellowstone	49 min
Sep 6, 12:50 AM MDT	Special Weather Statement	BYZ	Rosebud	40 min
Sep 6, 2:31 PM MDT	Special Weather Statement	BYZ	Stillwater	44 min
Sep 6, 2:38 PM MDT	Special Weather Statement	BYZ	Wheatland	37 min
Sep 6, 3:01 PM MDT	Severe Thunderstorm Warning	BYZ	Stillwater	59 min
Sep 6, 3:31 PM MDT	Special Weather Statement	BYZ	Wheatland	44 min
Sep 6, 3:32 PM MDT	Special Weather Statement	BYZ	Yellowstone	88 min
Sep 6, 3:47 PM MDT	Special Weather Statement	BYZ	Golden Valley	43 min
Sep 6, 3:51 PM MDT	Special Weather Statement	BYZ	Big Horn	54 min
Sep 6, 4:06 PM MDT	Special Weather Statement	BYZ	Golden Valley	54 min
Sep 6, 4:46 PM MDT	Special Weather Statement	BYZ	Big Horn	44 min
Sep 6, 5:08 PM MDT	Special Weather Statement	BYZ	Musselshell	52 min
Sep 6, 5:32 PM MDT	Special Weather Statement	BYZ	Rosebud, Treasure	43 min
Sep 6, 4:39 PM MDT	Special Weather Statement	BYZ	Sheridan	51 min

Nearby

Special Weather Statements in Montana, 2013 Every special weather statement in 2013

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.