Alert archive / Washington / Special Weather Statements in 2017
Special Weather Statement, NWS Spokane, WA
NWS Spokane, WA issued this special weather statement at May 11, 2017, 3:02 PM PDT for Ferry County, Washington. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 11, 2017, 3:02 PM PDT (22:02 UTC)
- Expired
- May 11, 2017, 3:45 PM PDT
- In force
- 43 min
- Issued by
- NWS Spokane, WA
County Ferry County, WA
The radar
The Spokane radar (KOTX), 112 km from the middle of the area, began a volume at 22:03 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, 10.0 hours before the alert went out and 194 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
- 2353 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 379 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at May 11, 2:15 PM PDT, 47 minutes earlier.
Area forecast discussion, May 11, 2:15 PM PDT, 47 minutes before
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</html>Hazardous weather outlook, May 11, 2:00 PM PDT, 1 hour 2 minutes before
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<div class="status" id="status">Temporary Notice</div>
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</html>In the hours before
Special weather statement, May 11, 3:02 PM PDT, 0 minutes before
Special Weather Statement National Weather Service Spokane WA 302 PM PDT THU MAY 11 2017 WAZ035-038-043-044-112245- Upper Columbia Basin WA-Waterville Plateau WA-Okanogan Valley WA- Okanogan Highlands WA- 302 PM PDT THU MAY 11 2017 ...SPECIAL WEATHER STATEMENT... At 302 PM PDT, Doppler radar was tracking a strong thunderstorm 7 miles south of Nespelem Community, or 31 miles southeast of Omak, moving northeast at 45 mph. Half inch hail will be possible with this storm. Locations impacted include... Nespelem Community and Nespelem. LAT...LON 4797 11901 4808 11922 4863 11887 4844 11836 TIME...MOT...LOC 2202Z 218DEG 38KT 4809 11905 BW
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 12:14 PM PDT | River Flood Warning | OTX | Ferry | 4 days |
| May 11, 2:37 PM PDT | Areal Flood Advisory | OTX | Chelan, Okanogan | 18 hr |
| May 11, 3:18 PM PDT | Severe Thunderstorm Warning | OTX | Ferry, Okanogan | 42 min |
| May 11, 11:50 AM PDT | River Flood Watch | OTX | Boundary | 72 hr |
Nearby
Special Weather Statements in Washington, 2017Every special weather statement in 2017
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.