Alert archive / Arizona / Special Weather Statements in 2021

Special Weather Statement, NWS Phoenix, AZ

August 13, 2021Gila County, Arizona

NWS Phoenix, AZ issued this special weather statement at Aug 13, 2021, 2:50 PM MST for Gila County, Arizona. It was in force for 40 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 13, 2021, 2:50 PM MST (21:50 UTC)
Expired: Aug 13, 2021, 3:30 PM MST
In force: 40 min
Issued by: NWS Phoenix, AZ
Hail: 0.88 in
Wind: 55

County Gila County, AZ

The radar

The Phoenix radar (KIWA), 117 km from the middle of the area, began a volume at 21:53 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, 9.8 hours before the alert went out and 144 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: 1066 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1319 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 15 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 Aug 13, 11:44 AM MST, 3 hours 6 minutes earlier.

Area forecast discussion, Aug 13, 11:44 AM MST, 3 hours 6 minutes before

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<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>
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        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 13, 2:50 PM MST, 0 minutes before

Special Weather Statement
National Weather Service Phoenix AZ
250 PM MST Fri Aug 13 2021

AZZ558-560-562-563-132230-
Southeast Gila County AZ-San Carlos AZ-Globe/Miami AZ-
Pinal/Superstition Mountains AZ-
250 PM MST Fri Aug 13 2021

...A strong thunderstorm will impact portions of Gila County through
330 PM MST...

At 249 PM MST, Doppler radar was tracking a strong thunderstorm near
San Carlos, or 13 miles east of Globe, moving southwest at 5 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Globe, San Carlos, Cutter, Hilltop and Peridot.

This includes the following highways...
US Highway 60 between mile markers 253 and 259.
AZ Route 70 between mile markers 254 and 271.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3343 11030 3344 11032 3340 11035 3340 11041
      3339 11042 3339 11044 3330 11045 3319 11060
      3345 11080 3363 11042 3344 11026
TIME...MOT...LOC 2149Z 054DEG 4KT 3340 11055

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

SDB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 5:16 PM MST	Special Weather Statement	PSR	Yuma	44 min
Aug 12, 5:17 PM MST	Special Weather Statement	PSR	Yuma	43 min
Aug 12, 5:53 PM MST	Areal Flood Advisory	PSR	Yuma	3 hr
Aug 12, 6:28 PM MST	Special Weather Statement	PSR	La Paz	47 min
Aug 12, 6:30 PM MST	Special Weather Statement	PSR	Yuma	45 min
Aug 12, 6:42 PM MST	Areal Flood Advisory	PSR	La Paz	3 hr
Aug 12, 6:47 PM MST	Areal Flood Advisory	PSR	Maricopa, Yuma	3 hr
Aug 12, 6:50 PM MST	Severe Thunderstorm Warning	PSR	Yuma	40 min
Aug 12, 6:52 PM MST	Severe Thunderstorm Warning	PSR	La Paz	38 min
Aug 12, 7:16 PM MST	Flash Flood Warning Considerable damage threat	PSR	Yuma	4 hr
Aug 12, 7:25 PM MST	Severe Thunderstorm Warning	PSR	La Paz	50 min
Aug 12, 7:42 PM MST	Areal Flood Advisory	PSR	La Paz, Yuma	3 hr
Aug 12, 7:56 PM MST	Special Weather Statement	PSR	La Paz	49 min
Aug 12, 8:05 PM MST	Dust Storm Advisory	PSR	La Paz, Yuma	55 min
Aug 12, 8:48 PM MST	Flash Flood Warning Considerable damage threat	PSR	La Paz, Yuma	4 hr
Aug 13, 3:30 PM MST	Severe Thunderstorm Warning	PSR	Gila	45 min
Aug 13, 3:36 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	4 hr
Aug 13, 4:12 PM MST	Flash Flood Warning Considerable damage threat	PSR	Gila	4 hr
Aug 13, 4:14 PM MST	Special Weather Statement	PSR	Gila	46 min
Aug 13, 4:34 PM MST	Severe Thunderstorm Warning	PSR	Gila, Maricopa, Pinal	41 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.