Alert archive / Montana / High Wind Warnings in 2020

High Wind Warning 11, NWS Billings, MT

October 13, 202014 counties in Montana; Sheridan County, Wyoming

NWS Billings, MT issued this high wind warning at Oct 13, 2020, 2:57 PM MDT for 14 counties in Montana; Sheridan County, Wyoming. It took effect at Oct 14, 2020, 12:00 AM MDT. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 13, 2020, 2:57 PM MDT (20:57 UTC)
In effect from: Oct 14, 2020, 12:00 AM MDT
Expired: Oct 14, 2020, 5:54 PM MDT
In force: 18 hr
Issued by: NWS Billings, MT

Counties Big Horn County, MT, Carbon County, MT, Carter County, MT, Custer County, MT, Fallon County, MT, Golden Valley County, MT, Musselshell County, MT, Powder River County, MT, Rosebud County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Wheatland County, MT, Yellowstone County, MT, Sheridan County, WY

The radar

The Billings radar (KBLX), 85 km from the middle of the area, began a volume at 20:56 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 12:00Z, 9.0 hours before the alert went out and 320 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: 2305 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 194 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 high wind 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 high wind warning went out at Oct 13, 10:04 AM MDT, 4 hours 53 minutes earlier.

Area forecast discussion, Oct 13, 10:04 AM MDT, 4 hours 53 minutes before

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Hazardous weather outlook, Oct 13, 2:52 PM MDT, 5 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 13, 3:20 AM MDT	High Wind Watch	BYZ	Big Horn, Carbon, Carter, Golden Valley, Powder River, Rosebud and 4 more	12 hr
Oct 13, 3:20 AM MDT	Wind Advisory	BYZ	Park, Stillwater, Sweet Grass	36 hr

Nearby

High Wind Warnings in Montana, 2020 High Wind Warnings in Wyoming, 2020 Every high wind warning in 2020

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.