Alert archive / California / Special Weather Statements in 2017
Special Weather Statement, NWS Sacramento, CA
NWS Sacramento, CA issued this special weather statement at Aug 9, 2017, 2:23 PM PDT for Glenn County, California. It was in force for 52 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
- Aug 9, 2017, 2:23 PM PDT (21:23 UTC)
- Expired
- Aug 9, 2017, 3:15 PM PDT
- In force
- 52 min
- Issued by
- NWS Sacramento, CA
County Glenn County, CA
The radar
The Beale AFB radar (KBBX), 103 km from the middle of the area, began a volume at 21:25 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
Oakland, CA (KOAK), launched 12:00Z, 9.4 hours before the alert went out and 198 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
- 797 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 17 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 Sacramento, CA wrote its last area forecast discussion before this special weather statement went out at Aug 9, 8:55 AM PDT, 5 hours 28 minutes earlier.
Area forecast discussion, Aug 9, 8:55 AM PDT, 5 hours 28 minutes before
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<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<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.
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</html>In the hours before
Special weather statement, Aug 9, 2:23 PM PDT, 0 minutes before
Special Weather Statement National Weather Service Sacramento CA 223 PM PDT WED AUG 9 2017 CAZ063-092215- Mountains Southwestern Shasta County to Northern Lake County CA- 223 PM PDT WED AUG 9 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN LAKE COUNTY UNTIL 315 PM PDT... At 223 PM PDT, Doppler radar was tracking a strong thunderstorm 10 miles northwest of Fouts Springs, or 15 miles south of Alder Springs, moving north at 10 mph. Dime size hail and winds in excess of 40 mph will be possible with this storm. This storm will remain over mainly rural areas of northern Lake County. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 3938 12286 3951 12289 3954 12277 3942 12275 TIME...MOT...LOC 2123Z 185DEG 7KT 3944 12282
The office that day
Everything else NWS Sacramento, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:27 PM PDT | Special Weather Statement | STO | Shasta | 48 min |
| Aug 9, 3:47 PM PDT | Severe Thunderstorm Warning | STO | Colusa, Glenn, Lake | 28 min |
| Aug 9, 4:02 PM PDT | Severe Thunderstorm Warning | STO | Shasta | 43 min |
| Aug 9, 4:14 PM PDT | Severe Thunderstorm Warning | STO | Shasta | 32 min |
| Aug 9, 4:50 PM PDT | Special Weather Statement | STO | 40 min |
Nearby
Special Weather Statements in California, 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.