Alert archive / Arizona / Dust Storm Advisories in 2021

Dust Storm Advisory 47, NWS Phoenix, AZ

September 5, 2021Maricopa County, Pinal County, Arizona

NWS Phoenix, AZ issued this dust storm advisory at Sep 5, 2021, 5:43 PM MST for Maricopa County, Pinal County, Arizona. It was in force for 89 min.

The area

The counties it named.

The facts

Issued: Sep 5, 2021, 5:43 PM MST (00:43 UTC)
Expired: Sep 5, 2021, 7:12 PM MST
In force: 89 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon

Counties Maricopa County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 29 km from the middle of the area, began a volume at 00:43 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 00:00Z, 0.7 hours before the alert went out and 34 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: 48 J/kg
Mixed-layer CIN: -147 J/kg
Mixed-layer LCL: 3562 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this dust storm advisory 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 dust storm advisory went out at Sep 5, 4:31 PM MST, 1 hour 12 minutes earlier.

Area forecast discussion, Sep 5, 4:31 PM MST, 1 hour 12 minutes before

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In the hours before

Special weather statement, Sep 5, 3:12 PM MST, 2 hours 31 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.

Issued	Product	Office	Counties	Lasted
Sep 5, 5:04 PM MST	Severe Thunderstorm Warning	PSR	Gila, Pinal	41 min
Sep 5, 5:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	4 hr
Sep 6, 12:12 PM MST	Excessive Heat Warning	PSR	La Paz, Maricopa	3 days

Nearby

Dust Storm Advisories in Arizona, 2021 Every dust storm advisory in 2021

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.