Alert archive / Washington / Winter Weather Advisories in 2022
Winter Weather Advisory 21, NWS Spokane, WA
NWS Spokane, WA issued this winter weather advisory at May 17, 2022, 3:07 PM PDT for Chelan County, Okanogan County, Washington. It took effect at May 18, 2022, 5:00 AM PDT. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- May 17, 2022, 3:07 PM PDT (22:07 UTC)
- In effect from
- May 18, 2022, 5:00 AM PDT
- Expired
- May 19, 2022, 5:00 AM PDT
- In force
- 24 hr
- Issued by
- NWS Spokane, WA
Counties Chelan County, WA, Okanogan County, WA
The radar
The Seattle radar (KATX), 172 km from the middle of the area, began a volume at 22:10 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, 10.1 hours before the alert went out and 322 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
- 9 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 586 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather 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 winter weather advisory went out at May 17, 2:55 PM PDT, 12 minutes earlier.
Area forecast discussion, May 17, 2:55 PM PDT, 12 minutes before
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</html>Hazardous weather outlook, May 17, 4:31 AM PDT, 10 hours 36 minutes before
Hazardous Weather Outlook National Weather Service Spokane WA 431 AM PDT Tue May 17 2022 IDZ001>004-026-027-WAZ031>038-041-043-044-047>049-181145- Northern Panhandle-Coeur d'Alene Area-Idaho Palouse- Central Panhandle Mountains-Lewiston Area- Lewis and Southern Nez Perce Counties-Northeast Blue Mountains- Lower Garfield and Asotin Counties-Washington Palouse- Moses Lake Area-Upper Columbia Basin-Spokane Area- Northeast Mountains-Okanogan Highlands-Wenatchee Area- Okanogan Valley-Waterville Plateau-Central Chelan County- Western Chelan County-Western Okanogan County- 431 AM PDT Tue May 17 2022 This Hazardous Weather Outlook is for portions of North Idaho... North Central Idaho...Central Washington...East Central Washington...North Central Washington...Northeast Washington and Southeast Washington. .DAY ONE...TODAY AND TONIGHT No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY Gusty winds on Wednesday may cause choppy conditions on waters and create patchy blowing dust for parts of the Columbia Basin. Periods of unsettled weather through this week may bring widespread rain showers, light mountain snow, and afternoon or early evening isolated thunderstorms. Chilly overnight lows and patchy frost is possible Thursday and Friday mornings. Please refer to our Graphical Hazardous Weather Outlook at https://weather.gov/erh/ghwo?wfo=otx for the latest information on potential weather hazards in the region.
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 3:15 PM PDT | Blowing Dust Advisory | OTX | Adams, Douglas, Grant, Lincoln, Okanogan | 29 hr |
Nearby
Winter Weather Advisories in Washington, 2022Every winter weather advisory in 2022
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.