Alert archive / Arizona / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 93, NWS Phoenix, AZ

August 7, 2024Gila County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 7, 2024, 4:26 PM MST for Gila County, Arizona. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 7, 2024, 4:26 PM MST (23:26 UTC)
Expired: Aug 7, 2024, 4:53 PM MST
In force: 27 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Gila County, AZ

The radar

The Flagstaff radar (KFSX), 93 km from the middle of the area, began a volume at 23:27 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, 11.4 hours before the alert went out and 115 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: 2262 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: 22 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 severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 7, 4:20 PM MST, 6 minutes earlier.

Area forecast discussion, Aug 7, 4:20 PM MST, 6 minutes before

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In the hours before

Local storm report, Aug 7, 12:47 PM MST, 3 hours 39 minutes before

Preliminary Local Storm Report
National Weather Service Phoenix AZ
1247 PM MST Wed Aug 7 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0636 PM     Dust Storm       3 ENE Arizona City      32.78N 111.62W
08/06/2024                   Pinal              AZ   NWS Employee

            Visibility reduced below one quarter mile
            from blowing dust.

&&

TW

Local storm report, Aug 7, 1:01 PM MST, 3 hours 25 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>

Local storm report, Aug 7, 1:33 PM MST, 2 hours 53 minutes before

Preliminary Local Storm Report
National Weather Service Phoenix AZ
133 PM MST Wed Aug 7 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0905 PM     Tstm Wnd Dmg     2 NE Paradise Valley    33.55N 111.92W
08/06/2024                   Maricopa           AZ   Broadcast Media

            Approximately 30 trees were uprooted at the
            McCormick Ranch Golf Club.

&&

TW

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 5:02 PM MST	Special Weather Statement	PSR	Gila	43 min
Aug 6, 5:44 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa	46 min
Aug 6, 6:15 PM MST	Special Weather Statement	PSR	Gila	45 min
Aug 6, 6:32 PM MST	Dust Storm Warning	PSR	Pinal	58 min
Aug 6, 7:20 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	40 min
Aug 6, 7:28 PM MST	Dust Storm Warning	PSR	Maricopa, Pinal	47 min
Aug 6, 7:31 PM MST	Special Weather Statement	PSR	Pinal	44 min
Aug 6, 7:34 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	41 min
Aug 6, 7:37 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	38 min
Aug 6, 7:44 PM MST	Special Weather Statement	PSR		46 min
Aug 6, 8:01 PM MST	Dust Storm Advisory	PSR	Maricopa, Pinal	44 min
Aug 6, 8:16 PM MST	Special Weather Statement	PSR		44 min
Aug 6, 8:52 PM MST	Special Weather Statement	PSR	Maricopa	38 min
Aug 6, 9:01 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	44 min
Aug 6, 11:29 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	31 min
Aug 6, 11:38 PM MST	Special Weather Statement	PSR	Pinal	37 min
Aug 6, 11:42 PM MST	Severe Thunderstorm Warning	PSR	Pinal	33 min
Aug 7, 12:34 AM MST	Special Weather Statement	PSR	Pinal	86 min
Aug 7, 12:46 AM MST	Areal Flood Advisory	PSR	Pinal	3 hr
Aug 7, 1:16 AM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	44 min
Aug 7, 1:38 AM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	112 min
Aug 7, 1:56 AM MST	Flash Flood Warning Considerable damage threat	PSR	Maricopa	3 hr
Aug 7, 2:24 PM MST	Severe Thunderstorm Warning	PSR	Gila	51 min
Aug 7, 4:10 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	3 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2024 Every severe thunderstorm warning in 2024

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.