Alert archive / Oregon / Winter Storm Warnings in 2008

Winter Storm Warning 8, NWS Pendleton, OR

December 11, 20087 counties in Oregon; Columbia County, Walla Walla County, Washington

NWS Pendleton, OR issued this winter storm warning at Dec 11, 2008, 3:14 PM PST for 7 counties in Oregon; Columbia County, Walla Walla County, Washington. It took effect at Dec 11, 2008, 8:52 PM PST. It was in force for 66 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: Dec 11, 2008, 3:14 PM PST (23:14 UTC)
In effect from: Dec 11, 2008, 8:52 PM PST
Expired: Dec 14, 2008, 2:34 PM PST
In force: 66 hr
Issued by: NWS Pendleton, OR

Counties Gilliam County, OR, Grant County, OR, Morrow County, OR, Umatilla County, OR, Union County, OR, Wallowa County, OR, Wheeler County, OR, Columbia County, WA, Walla Walla County, WA

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.2 hours before the alert went out and 310 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: 1423 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 54 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 winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pendleton, OR wrote its last area forecast discussion before this winter storm warning went out at Dec 11, 2:30 PM PST, 44 minutes earlier.

Area forecast discussion, Dec 11, 2:30 PM PST, 44 minutes before

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Hazardous weather outlook, Dec 11, 5:25 AM PST, 9 hours 49 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 10, 8:55 PM PST	Winter Storm Watch	PDT	Gilliam, Grant, Morrow, Umatilla, Union, Wallowa and 1 more	32 hr
Dec 11, 3:26 AM PST	High Wind Watch	PDT	Crook, Deschutes, Gilliam, Grant, Jefferson, Morrow and 4 more	30 hr

Nearby

Winter Storm Warnings in Oregon, 2008 Winter Storm Warnings in Washington, 2008 Every winter storm warning in 2008

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.