Alert archive / Arizona / Areal Flood Advisories in 2021

Areal Flood Advisory 36, NWS Tucson, AZ

July 15, 2021Pima County, Arizona

NWS Tucson, AZ issued this areal flood advisory at Jul 15, 2021, 6:07 AM MST for Pima County, Arizona. It was in force for 113 min.

The area

The counties it named.

The facts

Issued: Jul 15, 2021, 6:07 AM MST (13:07 UTC)
Expired: Jul 15, 2021, 8:00 AM MST
In force: 113 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon

County Pima County, AZ

The radar

The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 13:09 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, 1.1 hours before the alert went out and 84 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: 1024 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 1408 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 41 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 areal flood advisory 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 areal flood advisory went out at Jul 15, 2:52 AM MST, 3 hours 15 minutes earlier.

Area forecast discussion, Jul 15, 2:52 AM MST, 3 hours 15 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
Jul 14, 5:33 PM MST	Special Weather Statement	TWC		27 min
Jul 14, 5:41 PM MST	Special Weather Statement	TWC		49 min
Jul 15, 6:33 AM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 15, 8:12 AM MST	Areal Flood Advisory	TWC	Pima	2 hr
Jul 15, 8:32 AM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 15, 8:40 AM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	114 min
Jul 15, 1:51 PM MST	Areal Flood Advisory	TWC	Cochise, Graham	3 hr
Jul 15, 1:55 PM MST	Special Weather Statement	TWC	Greenlee	35 min
Jul 15, 2:19 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham	41 min
Jul 15, 2:31 PM MST	Areal Flood Advisory	TWC	Cochise	119 min
Jul 15, 2:52 PM MST	Severe Thunderstorm Warning	TWC	Cochise	38 min
Jul 15, 3:15 PM MST	Severe Thunderstorm Warning	TWC	Graham	45 min
Jul 15, 3:30 PM MST	Areal Flood Advisory	TWC	Graham, Greenlee	3 hr
Jul 15, 3:57 PM MST	Severe Thunderstorm Warning	TWC	Graham	33 min
Jul 15, 4:29 PM MST	Flash Flood Warning Considerable damage threat	TWC	Graham	2 hr
Jul 15, 4:42 PM MST	Special Weather Statement	TWC	Graham	33 min

Nearby

Areal Flood Advisories in Arizona, 2021 Every areal flood advisory 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.