Alert archive / Montana / River Flood Warnings in 2018

River Flood Warning 15, NWS Great Falls, MT

May 11, 2018Broadwater County, Gallatin County, Montana

NWS Great Falls, MT issued this river flood warning at May 11, 2018, 5:15 PM MDT for Broadwater County, Gallatin County, Montana. It took effect at May 12, 2018, 12:00 PM MDT. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued: May 11, 2018, 5:15 PM MDT (23:15 UTC)
In effect from: May 12, 2018, 12:00 PM MDT
Expired: May 13, 2018, 8:00 PM MDT
In force: 32 hr
Issued by: NWS Great Falls, MT
Area: Storm-based polygon
Flood severity: Minor

Counties Broadwater County, MT, Gallatin County, MT

The radar

The Great Falls radar (KTFX), 169 km from the middle of the area, began a volume at 23:18 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 river

Written for the forecast point Jefferson River near Three Forks (TFKM8). The gauge peaked at 8.04 ft at May 13, 2018, 4:00 AM MDT.

Action stage: 7 ft
Minor stage: 8 ft
Moderate stage: 8.5 ft
Major stage: 9 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06036650, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Great Falls, MT wrote its last area forecast discussion before this river flood warning went out at May 11, 3:06 PM MDT, 2 hours 9 minutes earlier.

Area forecast discussion, May 11, 3:06 PM MDT, 2 hours 9 minutes before

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      <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.
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      <p id="message2">
        Please try again in a few minutes.
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      <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

Local storm report, May 11, 12:16 PM MDT, 4 hours 59 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.
      </p>
    </section>
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Local storm report, May 11, 12:42 PM MDT, 4 hours 33 minutes before

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<html lang="en">
<head>
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  <title>Service Notice</title>
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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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, May 11, 12:45 PM MDT, 4 hours 30 minutes before

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<html lang="en">
<head>
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  <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, May 11, 12:48 PM MDT, 4 hours 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>

Local storm report, May 11, 12:50 PM MDT, 4 hours 25 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 Great Falls, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 10, 6:00 PM MDT	Severe Thunderstorm Warning	TFX	Hill	15 min
May 10, 6:21 PM MDT	Flood Watch	TFX		42 hr
May 10, 6:41 PM MDT	Areal Flood Advisory	TFX	Jefferson	4 days
May 10, 7:21 PM MDT	River Flood Warning	TFX	Beaverhead, Madison	51 hr
May 10, 8:47 PM MDT	Special Weather Statement	TFX	Judith Basin	43 min
May 10, 9:39 PM MDT	Special Weather Statement	TFX	Judith Basin	66 min
May 10, 11:21 PM MDT	Areal Flood Warning	TFX	Lewis and Clark	7 days
May 11, 10:54 AM MDT	River Flood Watch	TFX		14 hr
May 11, 1:24 PM MDT	Areal Flood Warning	TFX	Cascade	47 hr
May 11, 2:50 PM MDT	Winter Weather Advisory	TFX		18 hr
May 11, 2:58 PM MDT	River Flood Warning	TFX	Cascade	29 hr

Nearby

River Flood Warnings in Montana, 2018 Every river 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; the gauge from the NWS water service and the USGS.