Alert archive / Colorado / Flash Flood Warnings in 2018

Flash Flood Warning 25, NWS Grand Junction, CO

August 12, 2018Montezuma County, Colorado

NWS Grand Junction, CO issued this flash flood warning at Aug 12, 2018, 3:38 PM MDT for Montezuma County, Colorado. It was in force for 117 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: Aug 12, 2018, 3:38 PM MDT (21:38 UTC)
Expired: Aug 12, 2018, 5:35 PM MDT
In force: 117 min
Issued by: NWS Grand Junction, CO
Area: Storm-based polygon
Flood severity: None

County Montezuma County, CO

The radar

The Grand Junction radar (KGJX), 195 km from the middle of the area, began a volume at 21:39 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 Grand Junction, CO wrote its last area forecast discussion before this flash flood warning went out at Aug 12, 11:45 AM MDT, 3 hours 53 minutes earlier.

Area forecast discussion, Aug 12, 11:45 AM MDT, 3 hours 53 minutes before

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Hazardous weather outlook, Aug 12, 5:04 AM MDT, 10 hours 34 minutes before

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</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.
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In the hours before

Special weather statement, Aug 12, 3:08 PM MDT, 30 minutes before

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  <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.
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The office that day

Everything else NWS Grand Junction, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 12, 3:08 PM MDT	Special Weather Statement	GJT	La Plata	52 min
Aug 12, 4:20 PM MDT	Special Weather Statement	GJT	San Juan	40 min
Aug 12, 4:36 PM MDT	Special Weather Statement	GJT	Montezuma	39 min
Aug 12, 5:11 PM MDT	Special Weather Statement	GJT	Archuleta	49 min
Aug 12, 5:59 PM MDT	Special Weather Statement	GJT	Dolores	46 min

Nearby

Flash Flood Warnings in Colorado, 2018 Every flash flood warning 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; radar from the NEXRAD Level II archive.