Alert archive / Arizona / Special Weather Statements in 2018

Special Weather Statement, NWS Tucson, AZ

August 11, 2018Santa Cruz County, Arizona

NWS Tucson, AZ issued this special weather statement at Aug 11, 2018, 1:19 PM MST for Santa Cruz County, Arizona. It was in force for 41 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 11, 2018, 1:19 PM MST (20:19 UTC)
Expired: Aug 11, 2018, 2:00 PM MST
In force: 41 min
Issued by: NWS Tucson, AZ

County Santa Cruz County, AZ

The nearest sounding before it

Phoenix, AZ (KPSR), launched 12:00Z, 8.3 hours before the alert went out and 247 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: 2539 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: -50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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>

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 Tucson, AZ wrote its last area forecast discussion before this special weather statement went out at Aug 11, 9:05 AM MST, 4 hours 14 minutes earlier.

Area forecast discussion, Aug 11, 9:05 AM MST, 4 hours 14 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>

In the hours before

Special weather statement, Aug 11, 12:26 PM MST, 53 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>

Special weather statement, Aug 11, 1:19 PM MST, 0 minutes before

Special Weather Statement
National Weather Service Tucson AZ
119 PM MST SAT AUG 11 2018

AZZ503-513-112100-
Dragoon/Mule/Huachuca and Santa Rita Mountains including
Bisbee/Canelo Hills/Madera Canyon-Upper Santa Cruz River and Altar
Valleys including Nogales-
119 PM MST SAT AUG 11 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL SANTA CRUZ COUNTY
UNTIL 200 PM MST...

At 119 PM MST, Doppler radar was tracking a strong thunderstorm 8
miles east of Nogales, moving west at 10 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Nogales, Rio Rico Southwest, Rio Rico Southeast and Kino Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3144 11103 3146 11072 3133 11070 3133 11100
TIME...MOT...LOC 2019Z 072DEG 8KT 3138 11080

GL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 5:13 PM MST	Special Weather Statement	TWC		47 min
Aug 10, 5:17 PM MST	Severe Thunderstorm Warning	TWC	Pima	43 min
Aug 10, 5:38 PM MST	Severe Thunderstorm Warning	TWC	Pinal	52 min
Aug 10, 5:49 PM MST	Areal Flood Advisory	TWC	Pima	116 min
Aug 10, 6:01 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr
Aug 10, 6:22 PM MST	Dust Storm Advisory	TWC	Pima, Pinal	53 min
Aug 10, 6:38 PM MST	Dust Storm Warning	TWC	Pima, Pinal	43 min
Aug 10, 6:43 PM MST	Special Weather Statement	TWC	Pinal	47 min
Aug 10, 9:14 PM MST	Dust Storm Advisory	TWC	Pima, Pinal	61 min
Aug 10, 10:14 PM MST	Dust Storm Advisory	TWC	Pinal	31 min
Aug 11, 12:26 PM MST	Special Weather Statement	TWC	Santa Cruz	49 min
Aug 11, 3:48 PM MST	Special Weather Statement	TWC	Pima	42 min
Aug 11, 4:10 PM MST	Special Weather Statement	TWC		35 min

Nearby

Special Weather Statements in Arizona, 2018 Every special weather statement in 2018

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.