Alert archive / Washington / Blowing Dust Advisories in 2015

Blowing Dust Advisory 4, NWS Spokane, WA

November 17, 20155 counties in Washington

NWS Spokane, WA issued this blowing dust advisory at Nov 17, 2015, 2:23 PM PST for 5 counties in Washington. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Nov 17, 2015, 2:23 PM PST (22:23 UTC)
Expired: Nov 17, 2015, 9:00 PM PST
In force: 7 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 22:24 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, 10.4 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-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: 47 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 435 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 260 m²/s²
0-3 km storm-relative helicity: 220 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 blowing dust 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 blowing dust advisory went out at Nov 17, 10:35 AM PST, 3 hours 48 minutes earlier.

Area forecast discussion, Nov 17, 10:35 AM PST, 3 hours 48 minutes before

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Hazardous weather outlook, Nov 17, 5:41 AM PST, 8 hours 42 minutes before

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In the hours before

Local storm report, Nov 17, 10:06 AM PST, 4 hours 17 minutes before

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Local storm report, Nov 17, 12:32 PM PST, 1 hour 51 minutes before

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Local storm report, Nov 17, 1:23 PM PST, 1 hour before

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Local storm report, Nov 17, 2:23 PM PST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 17, 3:23 PM PST	Areal Flood Advisory	OTX	Chelan	12 hr

Nearby

Blowing Dust Advisories in Washington, 2015 Every blowing dust 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.