Alert archive / Washington / Snow Advisories in 2007
Snow Advisory 1, NWS Spokane, WA
NWS Spokane, WA issued this snow advisory at Jan 3, 2007, 3:47 AM PST for Asotin County, Garfield County, Washington. It took effect at Jan 3, 2007, 8:52 AM PST. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Jan 3, 2007, 3:47 AM PST (11:47 UTC)
- In effect from
- Jan 3, 2007, 8:52 AM PST
- Expired
- Jan 4, 2007, 1:00 AM PST
- In force
- 16 hr
- Issued by
- NWS Spokane, WA
Counties Asotin County, WA, Garfield County, WA
The radar
The Pendleton radar (KPDT), 134 km from the middle of the area, began a volume at 11:49 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 00:00Z, 11.8 hours before the alert went out and 171 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1260 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 510 m²/s²
- 0-3 km storm-relative helicity
- 513 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Spokane, WA wrote its last area forecast discussion before this snow advisory went out at Jan 3, 3:25 AM PST, 22 minutes earlier.
Area forecast discussion, Jan 3, 3:25 AM PST, 22 minutes before
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</html>Hazardous weather outlook, Jan 3, 12:24 AM PST, 3 hours 23 minutes before
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Snow Advisories in Washington, 2007Every snow advisory in 2007
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.