Alert archive / Montana / Flash Flood Warnings in 2001

Flash Flood Warning 19, NWS Glasgow, MT

July 19, 2001Roosevelt County, Montana

NWS Glasgow, MT issued this flash flood warning at Jul 19, 2001, 1:30 PM MDT for Roosevelt County, Montana. It was in force for 6 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: Jul 19, 2001, 1:30 PM MDT (19:30 UTC)
Expired: Jul 19, 2001, 7:30 PM MDT
In force: 6 hr
Issued by: NWS Glasgow, MT
Area: Whole counties

County Roosevelt County, MT

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 7.5 hours before the alert went out and 118 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: 6 J/kg
Mixed-layer CIN: -292 J/kg
Mixed-layer LCL: 1879 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Glasgow, MT wrote its last area forecast discussion before this flash flood warning went out at Jul 19, 9:30 AM MDT, 4 hours earlier.

Area forecast discussion, Jul 19, 9:30 AM MDT, 4 hours before

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In the hours before

Special weather statement, Jul 19, 12:01 PM MDT, 1 hour 29 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 Glasgow, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 18, 6:12 PM MDT	Severe Thunderstorm Warning	GGW	Garfield	48 min
Jul 19, 10:39 AM MDT	Severe Thunderstorm Warning	GGW	Garfield	66 min
Jul 19, 11:31 AM MDT	Severe Thunderstorm Warning	GGW	McCone	59 min
Jul 19, 11:46 AM MDT	Severe Thunderstorm Warning	GGW	Garfield	29 min
Jul 19, 1:09 PM MDT	Severe Thunderstorm Warning	GGW	McCone	66 min
Jul 19, 1:21 PM MDT	Severe Thunderstorm Warning	GGW	Richland, Roosevelt	54 min
Jul 19, 2:02 PM MDT	Severe Thunderstorm Warning	GGW	Sheridan	58 min

Nearby

Flash Flood Warnings in Montana, 2001 Every flash flood warning in 2001

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.