Alert archive / Montana / Snow Advisories in 2006

Snow Advisory 34, NWS Missoula, MT

November 26, 20064 counties in Montana; Clearwater County, Idaho County, Lemhi County, Idaho

NWS Missoula, MT issued this snow advisory at Nov 26, 2006, 5:48 PM MST for 4 counties in Montana; Clearwater County, Idaho County, Lemhi County, Idaho. It took effect at Nov 27, 2006, 1:00 AM MST. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued: Nov 26, 2006, 5:48 PM MST (00:48 UTC)
In effect from: Nov 27, 2006, 1:00 AM MST
Expired: Nov 27, 2006, 11:00 PM MST
In force: 22 hr
Issued by: NWS Missoula, MT

Counties Clearwater County, ID, Idaho County, ID, Lemhi County, ID, Deer Lodge County, MT, Granite County, MT, Powell County, MT, Silver Bow County, MT

The radar

The Missoula radar (KMSX), 105 km from the middle of the area, began a volume at 00:50 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, 0.8 hours before the alert went out and 292 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: 540 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 336 m²/s²
0-3 km storm-relative helicity: 497 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 snow advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before this snow advisory went out at Nov 26, 2:56 PM MST, 2 hours 52 minutes earlier.

Area forecast discussion, Nov 26, 2:56 PM MST, 2 hours 52 minutes before

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Hazardous weather outlook, Nov 26, 1:50 PM MST, 3 hours 58 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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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 27, 11:02 AM MST	Wind Chill Advisory	MSO	Flathead, Granite, Lake, Missoula, Ravalli, Sanders	27 hr
Nov 27, 11:02 AM MST	Winter Storm Warning	MSO	Deer Lodge, Granite, Powell, Silver Bow	18 hr

Nearby

Snow Advisories in Montana, 2006 Snow Advisories in Idaho, 2006 Every snow advisory in 2006

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.