Alert archive / Oregon / Winter Storm Watches in 2012

Winter Storm Watch 2, NWS Pendleton, OR

January 18, 201212 counties in Oregon; 5 counties in Washington

NWS Pendleton, OR issued this winter storm watch at Jan 18, 2012, 2:47 PM PST for 12 counties in Oregon; 5 counties in Washington. It took effect at Jan 19, 2012, 4:00 AM PST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 18, 2012, 2:47 PM PST (22:47 UTC)
In effect from: Jan 19, 2012, 4:00 AM PST
Expired: Jan 18, 2012, 8:07 PM PST
In force
Issued by: NWS Pendleton, OR

Counties Crook County, OR, Deschutes County, OR, Gilliam County, OR, Grant County, OR, Jefferson County, OR, Morrow County, OR, Sherman County, OR, Umatilla County, OR, Union County, OR, Wallowa County, OR, Wasco County, OR, Wheeler County, OR, Benton County, WA, Columbia County, WA, Franklin County, WA, Klickitat County, WA, Walla Walla County, WA

The radar

The Pendleton radar (KPDT), 69 km from the middle of the area, began a volume at 22:53 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

Boise Airport, ID (KBOI), launched 12:00Z, 10.8 hours before the alert went out and 334 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: 1894 m above ground
0-6 km bulk shear: 112 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 308 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 watch 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 watch went out at Jan 18, 9:55 AM PST, 4 hours 52 minutes earlier.

Area forecast discussion, Jan 18, 9:55 AM PST, 4 hours 52 minutes before

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Hazardous weather outlook, Jan 18, 6:05 AM PST, 8 hours 42 minutes before

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In the hours before

Local storm report, Jan 18, 11:54 AM PST, 2 hours 53 minutes before

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Local storm report, Jan 18, 1:15 PM PST, 1 hour 32 minutes before

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Local storm report, Jan 18, 1:29 PM PST, 1 hour 18 minutes before

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Local storm report, Jan 18, 1:53 PM PST, 54 minutes before

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Local storm report, Jan 18, 2:07 PM PST, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
207 PM PST WED JAN 18 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1100 AM     HEAVY SNOW       15 SSE FLORA            45.70N 117.15W
01/18/2012  M21.0 INCH       WALLOWA            OR   TRAINED SPOTTER

            RECORDED 21 INCHES OF SNOW ACCUMULATION IN LESS THAN 24
            HOURS. ELEVATION 3100 FEET.

&&

RQB

Local storm report, Jan 18, 2:30 PM PST, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
230 PM PST WED JAN 18 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 AM     HEAVY SNOW       15 SSE FLORA            45.70N 117.15W
01/18/2012  M21.0 INCH       WALLOWA            OR   TRAINED SPOTTER

            HEAVIEST SNOW THE SPOTTER HAS EVER SEEN IN SUCH A SHORT
            TIME PERIOD- 17 HRS.

0145 PM     HEAVY SNOW       LOSTINE                 45.49N 117.43W
01/18/2012  E5.0 INCH        WALLOWA            OR   PUBLIC

            5 INCHES SNOW OVERNIGHT. CURRENTLY WARMED UP TO 45
            DEGREES.

0148 PM     NON-TSTM WND GST 8 NNW CLARNO            45.03N 120.54W
01/18/2012  E66.00 MPH       WASCO              OR   MESONET

            NORTH POLE RIDGE.

0148 PM     HEAVY SNOW       5 NNW WILEY CITY        46.61N 120.69W
01/18/2012  M6.0 INCH        YAKIMA             WA   TRAINED SPOTTER

&&

MVESCIO

Nearby

Winter Storm Watches in Oregon, 2012 Winter Storm Watches in Washington, 2012 Every winter storm watch in 2012

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.