Alert archive / Washington / Freezing Rain Advisories in 2015

Freezing Rain Advisory 3, NWS Spokane, WA

December 2, 20155 counties in Washington

NWS Spokane, WA issued this freezing rain advisory at Dec 2, 2015, 3:16 PM PST for 5 counties in Washington. It took effect at Dec 3, 2015, 1:00 AM PST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Dec 2, 2015, 3:16 PM PST (23:16 UTC)
In effect from
Dec 3, 2015, 1:00 AM PST
Expired
Dec 3, 2015, 10:00 AM PST
In force
9 hr
Issued by
NWS Spokane, WA

Counties Adams County, WA, Douglas County, WA, Grant County, WA, Lincoln County, WA, Okanogan County, WA

The radar

The Spokane radar (KOTX), 116 km from the middle of the area, began a volume at 23:22 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

Quillayute State, WA (KUIL), launched 12:00Z, 11.3 hours before the alert went out and 400 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-pSkew-T log-p diagram, Quillayute State, WA at 12:00Z on 2015-12-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Quillayute State, WA at 12:00Z on 2015-12-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 177 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
460 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
177 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 1, 10:32 PM PSTWinter Storm WatchOTXChelan, Douglas, Ferry, Grant, Okanogan17 hr
Dec 2, 3:16 PM PSTWinter Storm WarningOTXChelan, Douglas, Ferry, Grant, Okanogan39 hr

Nearby

Freezing Rain Advisories in Washington, 2015Every freezing rain advisory in 2015

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.