Alert archive / Arizona / Special Weather Statements in 2021

Special Weather Statement, NWS Phoenix, AZ

July 16, 2021Pinal County, Arizona

NWS Phoenix, AZ issued this special weather statement at Jul 16, 2021, 8:54 AM MST for Pinal County, Arizona. It was in force for 36 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: Jul 16, 2021, 8:54 AM MST (15:54 UTC)
Expired: Jul 16, 2021, 9:30 AM MST
In force: 36 min
Issued by: NWS Phoenix, AZ

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 19 km from the middle of the area, began a volume at 15:56 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, 3.9 hours before the alert went out and 26 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2375 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jul 16, 4:54 AM MST, 4 hours earlier.

Area forecast discussion, Jul 16, 4:54 AM MST, 4 hours before

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<body>
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    <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, Jul 16, 8:54 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>
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 5:06 PM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	4 hr
Jul 15, 5:07 PM MST	Special Weather Statement	PSR		38 min
Jul 15, 5:12 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	48 min
Jul 15, 5:33 PM MST	Special Weather Statement	PSR	La Paz	42 min
Jul 15, 5:43 PM MST	Special Weather Statement	PSR		47 min
Jul 15, 6:00 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	3 hr
Jul 15, 6:08 PM MST	Special Weather Statement	PSR	Pinal	52 min
Jul 16, 9:48 AM MST	Special Weather Statement	PSR		27 min
Jul 16, 11:21 AM MST	Areal Flood Advisory	PSR	Maricopa	111 min
Jul 16, 2:56 PM MST	Special Weather Statement	PSR	Gila	34 min
Jul 16, 3:27 PM MST	Special Weather Statement	PSR		33 min
Jul 16, 3:37 PM MST	Special Weather Statement	PSR	Gila	38 min
Jul 16, 4:39 PM MST	Special Weather Statement	PSR	Gila	36 min

Nearby

Special Weather Statements in Arizona, 2021 Every special weather statement 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.