Alert archive / Washington / Winter Storm Watches in 2014

Winter Storm Watch 7, NWS Spokane, WA

February 17, 20145 counties in Washington; Bonner County, Boundary County, Kootenai County, Idaho

NWS Spokane, WA issued this winter storm watch at Feb 17, 2014, 2:27 PM PST for 5 counties in Washington; Bonner County, Boundary County, Kootenai County, Idaho. It took effect at Feb 18, 2014, 7:00 AM PST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 17, 2014, 2:27 PM PST (22:27 UTC)
In effect from: Feb 18, 2014, 7:00 AM PST
Expired: Feb 17, 2014, 10:27 PM PST
In force
Issued by: NWS Spokane, WA

Counties Bonner County, ID, Boundary County, ID, Kootenai County, ID, Ferry County, WA, Okanogan County, WA, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA

The radar

The Spokane radar (KOTX), 68 km from the middle of the area, began a volume at 22:31 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

Spokane, WA (KOTX), launched 12:00Z, 10.5 hours before the alert went out and 109 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: 1378 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 322 m²/s²
0-3 km storm-relative helicity: 312 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 Spokane, WA wrote its last area forecast discussion before this winter storm watch went out at Feb 17, 1:33 PM PST, 54 minutes earlier.

Area forecast discussion, Feb 17, 1:33 PM PST, 54 minutes before

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Hazardous weather outlook, Feb 17, 7:43 AM PST, 6 hours 44 minutes before

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In the hours before

Local storm report, Feb 17, 12:38 PM PST, 1 hour 49 minutes before

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Nearby

Winter Storm Watches in Washington, 2014 Winter Storm Watches in Idaho, 2014 Every winter storm watch in 2014

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.