Alert archive / Arizona / Flash Flood Warnings in 2019

Flash Flood Warning 107, NWS Phoenix, AZ

November 20, 2019Gila County, Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Nov 20, 2019, 3:19 PM MST for Gila County, Maricopa County, Arizona. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 20, 2019, 3:19 PM MST (22:19 UTC)
Expired: Nov 20, 2019, 11:15 PM MST
In force: 8 hr
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Flood severity: None

Counties Gila County, AZ, Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 32 km from the middle of the area, began a volume at 22:22 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.

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Nov 20, 1:48 PM MST, 1 hour 31 minutes earlier.

Area forecast discussion, Nov 20, 1:48 PM MST, 1 hour 31 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

Local storm report, Nov 20, 1:32 PM MST, 1 hour 47 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, Nov 20, 1:36 PM MST, 1 hour 43 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, Nov 20, 2:30 PM MST, 49 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, Nov 20, 2:39 PM MST, 40 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, Nov 20, 2:42 PM MST, 37 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, Nov 20, 2:46 PM MST, 33 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 Phoenix, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 19, 5:04 PM MST	Special Weather Statement	PSR		26 min
Nov 19, 5:12 PM MST	Special Weather Statement	PSR	Pinal	33 min
Nov 19, 5:38 PM MST	Special Weather Statement	PSR	Maricopa	37 min
Nov 19, 5:51 PM MST	Flash Flood Warning	PSR	Maricopa, Pinal	5 hr
Nov 19, 11:35 PM MST	Areal Flood Advisory	PSR	La Paz, Yuma	4 hr
Nov 20, 12:33 AM MST	Flash Flood Warning	PSR	La Paz	4 hr
Nov 20, 3:22 AM MST	Areal Flood Advisory	PSR	La Paz, Yuma	113 min
Nov 20, 3:45 AM MST	Areal Flood Advisory	PSR	Maricopa	2 hr
Nov 20, 3:47 AM MST	Areal Flood Advisory	PSR	Gila, Maricopa, Pinal	3 hr
Nov 20, 5:13 AM MST	Areal Flood Advisory	PSR	Gila, Pinal	2 hr
Nov 20, 7:28 AM MST	Areal Flood Advisory	PSR	Maricopa	3 hr
Nov 20, 7:56 AM MST	Areal Flood Advisory	PSR	Maricopa	3 hr
Nov 20, 8:13 AM MST	Areal Flood Advisory	PSR	Gila, Maricopa, Pinal	3 hr
Nov 20, 8:32 AM MST	Flash Flood Warning	PSR	Maricopa	3 hr
Nov 20, 8:38 AM MST	Flash Flood Warning	PSR	Maricopa	3 hr
Nov 20, 12:07 PM MST	Special Weather Statement	PSR	Maricopa	23 min
Nov 20, 12:23 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	3 hr
Nov 20, 12:29 PM MST	Flash Flood Warning	PSR	Maricopa	9 hr
Nov 20, 1:13 PM MST	Special Weather Statement	PSR		47 min
Nov 20, 3:22 PM MST	Special Weather Statement	PSR		38 min
Nov 20, 3:55 PM MST	Special Weather Statement	PSR	Maricopa	50 min
Nov 20, 3:57 PM MST	Special Weather Statement	PSR		48 min
Nov 20, 4:00 PM MST	Special Weather Statement	PSR	Maricopa	30 min
Nov 20, 4:22 PM MST	Special Weather Statement	PSR		53 min
Nov 20, 4:23 PM MST	Special Weather Statement	PSR		52 min
Nov 19, 6:14 PM MST	Areal Flood Advisory	PSR	Riverside, San Bernardino	3 hr
Nov 19, 6:54 PM MST	Areal Flood Advisory	PSR	Imperial	3 hr
Nov 19, 7:03 PM MST	Special Weather Statement	PSR	Imperial	42 min
Nov 19, 8:07 PM MST	Areal Flood Advisory	PSR	Imperial, Riverside	3 hr
Nov 19, 9:07 PM MST	Flash Flood Warning	PSR	Imperial, Riverside	4 hr
Nov 19, 9:20 PM MST	Flash Flood Warning	PSR	Imperial, Riverside	4 hr
Nov 19, 10:10 PM MST	Areal Flood Advisory	PSR	Imperial, Riverside, San Bernardino	3 hr
Nov 19, 10:25 PM MST	Special Weather Statement	PSR	Imperial	35 min
Nov 19, 10:50 PM MST	Areal Flood Advisory	PSR	Imperial, Riverside	4 hr
Nov 19, 10:57 PM MST	Special Weather Statement	PSR	Imperial	48 min
Nov 20, 12:09 AM MST	Flash Flood Warning	PSR	Imperial, Riverside, San Bernardino	5 hr
Nov 20, 12:17 AM MST	Flash Flood Warning	PSR	Riverside	4 hr

Nearby

Flash Flood Warnings in Arizona, 2019 Every flash flood warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.