Alert archive / Arizona / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 139, NWS Tucson, AZ

October 9, 2006Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Oct 9, 2006, 7:42 AM MST for Pima County, Pinal County, Arizona. It was in force for 48 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: Oct 9, 2006, 7:42 AM MST (14:42 UTC)
Expired: Oct 9, 2006, 8:30 AM MST
In force: 48 min
Issued by: NWS Tucson, AZ
Area: Counties, with a storm outline in the text

Counties Pima County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 88 km from the middle of the area, began a volume at 14:45 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

Tuscon, AZ (KTUS), launched 12:00Z, 2.7 hours before the alert went out and 73 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: 551 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1413 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.4

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 Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 9, 2:30 AM MST, 5 hours 12 minutes earlier.

Area forecast discussion, Oct 9, 2:30 AM MST, 5 hours 12 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>

Hazardous weather outlook, Oct 9, 6:00 AM MST, 1 hour 42 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 Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 8, 7:08 PM MST	Severe Thunderstorm Warning	TWC	Pima	37 min
Oct 9, 8:29 AM MST	Severe Thunderstorm Warning	TWC	Pinal	31 min
Oct 9, 9:18 AM MST	Severe Thunderstorm Warning	TWC	Cochise	42 min
Oct 9, 9:20 AM MST	Severe Thunderstorm Warning	TWC	Graham	40 min
Oct 9, 9:59 AM MST	Severe Thunderstorm Warning	TWC	Cochise	46 min
Oct 9, 10:22 AM MST	Severe Thunderstorm Warning	TWC	Greenlee	23 min
Oct 9, 10:45 AM MST	Severe Thunderstorm Warning	TWC	Greenlee	30 min
Oct 9, 10:47 AM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham	43 min
Oct 9, 10:55 AM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	35 min
Oct 9, 11:26 AM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	49 min
Oct 9, 12:28 PM MST	Severe Thunderstorm Warning	TWC	Graham	32 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2006 Every severe thunderstorm warning in 2006

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.