Alert archive / Arizona / Special Weather Statements in 2015

Special Weather Statement, NWS Phoenix, AZ

August 7, 2015

NWS Phoenix, AZ issued this special weather statement at Aug 7, 2015, 6:06 AM MST. 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
Aug 7, 2015, 6:06 AM MST (13:06 UTC)
Expired
Aug 7, 2015, 6:45 AM MST
In force
39 min
Issued by
NWS Phoenix, AZ

The radar

The Phoenix radar (KIWA), 24 km from the middle of the area, began a volume at 13:08 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

Phoenix, AZ (KPSR), launched 12:00Z, 1.1 hours before the alert went out and 46 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-pSkew-T log-p diagram, Phoenix, AZ at 12:00Z on 2015-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 195 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phoenix, AZ at 12:00Z on 2015-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
195 J/kg
Mixed-layer CIN
-180 J/kg
Mixed-layer LCL
2488 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Aug 7, 6:02 AM MST, 4 minutes earlier.

Area forecast discussion, Aug 7, 6:02 AM MST, 4 minutes before
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<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.
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In the hours before

Special weather statement, Aug 7, 6:06 AM MST, 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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 5:04 PM MSTSpecial Weather StatementPSRYuma26 min
Aug 6, 7:14 PM MSTSpecial Weather StatementPSR16 min
Aug 6, 9:41 PM MSTSpecial Weather StatementPSR34 min
Aug 7, 6:52 AM MSTSpecial Weather StatementPSRPinal38 min
Aug 7, 7:29 AM MSTSpecial Weather StatementPSR46 min
Aug 7, 11:41 AM MSTSpecial Weather StatementPSRGila49 min
Aug 7, 11:44 AM MSTSpecial Weather StatementPSRGila46 min
Aug 7, 11:51 AM MSTSpecial Weather StatementPSRGila54 min
Aug 7, 11:56 AM MSTSevere Thunderstorm WarningPSRGila49 min
Aug 7, 12:21 PM MSTAreal Flood AdvisoryPSRGila3 hr
Aug 7, 12:29 PM MSTSpecial Weather StatementPSRGila61 min
Aug 7, 12:53 PM MSTSpecial Weather StatementPSRGila82 min
Aug 7, 1:25 PM MSTFlash Flood WarningPSRGila3 hr
Aug 7, 1:54 PM MSTBlowing Dust AdvisoryPSR2 hr
Aug 7, 2:16 PM MSTFlash Flood WarningPSRGila3 hr
Aug 7, 2:22 PM MSTSpecial Weather StatementPSRGila53 min
Aug 7, 2:28 PM MSTSevere Thunderstorm WarningPSRPinal17 min
Aug 7, 3:19 PM MSTSpecial Weather StatementPSRPinal41 min
Aug 7, 4:20 PM MSTSpecial Weather StatementPSR25 min
Aug 7, 4:47 PM MSTSpecial Weather StatementPSRMaricopa43 min
Aug 6, 7:26 PM MSTSevere Thunderstorm WarningPSRImperial, Riverside19 min
Aug 6, 7:46 PM MSTSpecial Weather StatementPSRRiverside29 min
Aug 6, 9:11 PM MSTSpecial Weather StatementPSRRiverside34 min
Aug 6, 9:27 PM MSTSevere Thunderstorm WarningPSRRiverside, San Bernardino33 min
Aug 6, 10:54 PM MSTSpecial Weather StatementPSRRiverside36 min
Aug 7, 12:46 AM MSTAreal Flood AdvisoryPSRRiverside, San Bernardino3 hr

Nearby

Special Weather Statements in Arizona, 2015Every 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.