Alert archive / California / Special Weather Statements in 2015

Special Weather Statement, NWS Phoenix, AZ

October 15, 2015Riverside County, California

NWS Phoenix, AZ issued this special weather statement at Oct 15, 2015, 5:36 PM PDT for Riverside County, California. It was in force for 39 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: Oct 15, 2015, 5:36 PM PDT (00:36 UTC)
Expired: Oct 15, 2015, 6:15 PM PDT
In force: 39 min
Issued by: NWS Phoenix, AZ

County Riverside County, CA

The radar

The San Diego radar (KNKX), 142 km from the middle of the area, began a volume at 00:39 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

San Diego, CA (KNKX), launched 00:00Z, 0.6 hours before the alert went out and 162 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: 514 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 912 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Phoenix, AZ wrote its last area forecast discussion before this special weather statement went out at Oct 15, 3:25 PM PDT, 2 hours 11 minutes earlier.

Area forecast discussion, Oct 15, 3:25 PM PDT, 2 hours 11 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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</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.
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      <p id="message2">
        Please try again in a few minutes.
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In the hours before

Special weather statement, Oct 15, 5:36 PM PDT, 0 minutes before

<!doctype html>
<html lang="en">
<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.
      </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>
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The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 16, 12:44 PM PDT	Special Weather Statement	PSR		46 min
Oct 16, 1:29 PM PDT	Special Weather Statement	PSR	Maricopa	46 min
Oct 16, 1:45 PM PDT	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	30 min
Oct 16, 1:52 PM PDT	Blowing Dust Advisory	PSR		2 hr
Oct 16, 2:06 PM PDT	Dust Storm Warning	PSR		76 min
Oct 16, 3:33 PM PDT	Special Weather Statement	PSR	Pinal	27 min
Oct 15, 7:56 PM PDT	Special Weather Statement	PSR	Imperial	34 min
Oct 15, 8:10 PM PDT	Areal Flood Advisory	PSR	Riverside	50 min
Oct 15, 9:42 PM PDT	Areal Flood Advisory	PSR	Imperial, Riverside	3 hr
Oct 16, 2:06 AM PDT	Areal Flood Advisory	PSR	Riverside, San Bernardino	3 hr

Nearby

Special Weather Statements in California, 2015 Every special weather statement 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.