Alert archive / Arizona / Flash Flood Warnings in 2026

Flash Flood Warning 104, NWS Flagstaff, AZ

August 11, 2026Yavapai County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Aug 11, 2026, 5:27 PM MST for Yavapai County, Arizona. It was in force for 3 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: Aug 11, 2026, 5:27 PM MST (00:27 UTC)
Expired: Aug 11, 2026, 8:30 PM MST
In force: 3 hr
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 00:29 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 Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Aug 11, 4:00 PM MST, 1 hour 27 minutes earlier.

Area forecast discussion, Aug 11, 4:00 PM MST, 1 hour 27 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, 2:59 PM MST, 2 hours 28 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, Aug 11, 4:55 PM MST, 32 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, Aug 11, 5:01 PM MST, 26 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, Aug 11, 5:12 PM MST, 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 Flagstaff, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 11, 5:32 PM MST	Special Weather Statement	FGZ	Yavapai	28 min
Aug 11, 6:26 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Apache	3 hr
Aug 12, 1:11 AM MST	Flood Watch	FGZ	Apache, Coconino, Gila, Navajo, Yavapai	23 hr
Aug 12, 10:06 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Aug 12, 10:55 AM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	24 min
Aug 12, 11:30 AM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Aug 12, 12:05 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Aug 12, 12:26 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	34 min
Aug 12, 12:34 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Aug 12, 12:43 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Aug 12, 1:48 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	3 hr
Aug 12, 2:26 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	34 min
Aug 12, 2:44 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Coconino	3 hr
Aug 12, 2:45 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	6 hr
Aug 12, 3:15 PM MST	Severe Thunderstorm Warning	FGZ	Gila	30 min
Aug 12, 3:41 PM MST	Areal Flood Advisory	FGZ	Gila	3 hr
Aug 12, 4:01 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Yavapai	6 hr
Aug 12, 4:18 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	8 hr
Aug 12, 4:52 PM MST	Flash Flood Warning Considerable damage threat	FGZ	Gila	3 hr

Nearby

Flash Flood Warnings in Arizona, 2026 Every flash flood warning in 2026

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.