Alert archive / Oregon / Winter Weather Advisories in 2017
Winter Weather Advisory 21, NWS Pendleton, OR
NWS Pendleton, OR issued this winter weather advisory at Apr 7, 2017, 2:50 PM PDT for 10 counties in Oregon; Columbia County, Walla Walla County, Washington. It took effect at Apr 7, 2017, 11:00 PM PDT. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Apr 7, 2017, 2:50 PM PDT (21:50 UTC)
- In effect from
- Apr 7, 2017, 11:00 PM PDT
- Expired
- Apr 8, 2017, 2:32 PM PDT
- In force
- 16 hr
- Issued by
- NWS Pendleton, OR
Counties Crook County, OR, Deschutes County, OR, Gilliam County, OR, Grant County, OR, Jefferson County, OR, Morrow County, OR, Umatilla County, OR, Union County, OR, Wallowa County, OR, Wheeler County, OR, Columbia County, WA, Walla Walla County, WA
The radar
The Pendleton radar (KPDT), 71 km from the middle of the area, began a volume at 21:53 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, 9.8 hours before the alert went out and 362 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
- 781 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 323 m²/s²
- 0-3 km storm-relative helicity
- 516 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 Pendleton, OR wrote its last area forecast discussion before this winter weather advisory went out at Apr 7, 2:43 PM PDT, 7 minutes earlier.
Area forecast discussion, Apr 7, 2:43 PM PDT, 7 minutes before
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Local storm report, Apr 7, 10:35 AM PDT, 4 hours 15 minutes before
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</html>Local storm report, Apr 7, 11:02 AM PDT, 3 hours 48 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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</html>Local storm report, Apr 7, 11:26 AM PDT, 3 hours 24 minutes before
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<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Local storm report, Apr 7, 11:39 AM PDT, 3 hours 11 minutes before
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<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Local storm report, Apr 7, 12:36 PM PDT, 2 hours 14 minutes before
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<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
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</body>
</html>The office that day
Everything else NWS Pendleton, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 4:12 AM PDT | High Wind Warning | PDT | Crook, Deschutes, Gilliam, Jefferson, Morrow, Sherman and 3 more | 12 hr |
| Apr 7, 5:30 AM PDT | Special Weather Statement | PDT | Benton | 45 min |
| Apr 7, 5:32 AM PDT | Special Weather Statement | PDT | Franklin | 13 min |
| Apr 7, 3:17 PM PDT | Special Weather Statement | PDT | Walla Walla | 43 min |
Nearby
Winter Weather Advisories in Oregon, 2017Winter Weather Advisories in Washington, 2017Every winter weather advisory 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.