Alert archive / Montana / Wind Advisories in 2013

Wind Advisory 9, NWS Billings, MT

February 12, 2013Park County, Stillwater County, Sweet Grass County, Montana

NWS Billings, MT issued this wind advisory at Feb 12, 2013, 3:35 AM MST for Park County, Stillwater County, Sweet Grass County, Montana. It took effect at Feb 12, 2013, 8:00 PM MST. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Feb 12, 2013, 3:35 AM MST (10:35 UTC)
In effect from: Feb 12, 2013, 8:00 PM MST
Expired: Feb 13, 2013, 9:33 AM MST
In force: 14 hr
Issued by: NWS Billings, MT

Counties Park County, MT, Stillwater County, MT, Sweet Grass County, MT

The radar

The Billings radar (KBLX), 107 km from the middle of the area, began a volume at 10:41 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

Riverton, WY (KRIW), launched 00:00Z, 10.6 hours before the alert went out and 313 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: 1886 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 207 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 wind advisory 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 wind advisory went out at Feb 11, 8:45 PM MST, 6 hours 50 minutes earlier.

Area forecast discussion, Feb 11, 8:45 PM MST, 6 hours 50 minutes before

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Nearby

Wind Advisories in Montana, 2013 Every wind advisory 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.