Alert archive / Montana / Flash Flood Watches in 2011
Flash Flood Watch 2, NWS Glasgow, MT
NWS Glasgow, MT issued this flash flood watch at Jun 12, 2011, 9:44 AM MDT for 9 counties in Montana. It took effect at Jun 12, 2011, 3:00 PM MDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Jun 12, 2011, 9:44 AM MDT (15:44 UTC)
- In effect from
- Jun 12, 2011, 3:00 PM MDT
- Expired
- Jun 12, 2011, 8:27 PM MDT
- In force
- 5 hr
- Issued by
- NWS Glasgow, MT
- Flood severity
- None
Counties Daniels County, MT, Dawson County, MT, McCone County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Valley County, MT, Wibaux County, MT
The radar
The Glasgow radar (KGGW), 114 km from the middle of the area, began a volume at 15:47 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 nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 3.7 hours before the alert went out and 359 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 145 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch 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 watch went out at Jun 12, 9:38 AM MDT, 6 minutes earlier.
Area forecast discussion, Jun 12, 9:38 AM MDT, 6 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>Hazardous weather outlook, Jun 12, 3:43 AM MDT, 6 hours 1 minute 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, Jun 12, 7:14 AM MDT, 2 hours 30 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 |
|---|---|---|---|---|
| Jun 11, 6:48 PM MDT | Special Weather Statement | GGW | Daniels | 57 min |
| Jun 11, 6:53 PM MDT | Special Weather Statement | GGW | Garfield | 67 min |
| Jun 11, 6:57 PM MDT | Special Weather Statement | GGW | 63 min | |
| Jun 11, 8:35 PM MDT | Areal Flood Warning | GGW | Phillips, Valley | 9 days |
| Jun 11, 9:02 PM MDT | Areal Flood Warning | GGW | Roosevelt, Valley | 20 hr |
| Jun 11, 10:08 PM MDT | Flash Flood Warning | GGW | Daniels, McCone, Roosevelt, Valley | 3 hr |
| Jun 12, 1:22 AM MDT | Areal Flood Warning | GGW | Roosevelt | 22 hr |
| Jun 12, 12:39 PM MDT | Special Weather Statement | GGW | 51 min | |
| Jun 12, 2:17 PM MDT | Special Weather Statement | GGW | Valley | 58 min |
| Jun 12, 3:30 PM MDT | Special Weather Statement | GGW | Petroleum | 60 min |
| Jun 12, 4:25 PM MDT | Special Weather Statement | GGW | Petroleum | 65 min |
Nearby
Flash Flood Watches in Montana, 2011Every flash flood watch in 2011
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; radar from the NEXRAD Level II archive.