Alert archive / Montana / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 100, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jul 9, 2016, 7:51 PM MDT for Garfield County, McCone County, Valley County, Montana. It was in force for 54 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
- Jul 9, 2016, 7:51 PM MDT (01:51 UTC)
- Expired
- Jul 9, 2016, 8:45 PM MDT
- In force
- 54 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Garfield County, MT, McCone County, MT, Valley County, MT
The radar
The Glasgow radar (KGGW), 50 km from the middle of the area, began a volume at 01:54 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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.9 hours before the alert went out and 52 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
- 643 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 2334 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.7
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 9, 2:33 PM MDT, 5 hours 18 minutes earlier.
Area forecast discussion, Jul 9, 2:33 PM MDT, 5 hours 18 minutes before
Area Forecast Discussion National Weather Service GLASGOW MT 233 PM MDT SAT JUL 9 2016 .SHORT TERM...for northeast Montana...tonight through Mon... Now, as we get into the beginning of a wet weekend period, the overall forecast thinking is similar to previous forecast discussions, but some model disagreements and uncertainty still exist for the timing, placement and intensity of the individual stronger storms. Just now at forecast issuance time, a strong and/or possibly severe thunderstorm is about to enter the western edge of our Petroleum County. Once again, the SPC SSEO output lined up with this storm nearly perfectly. Expect the greatest threat of these storms this afternoon and evening to continue along that trajectory and include additional strong storms for our western zones. Rain showers and strong thunderstorms are expected to march through the remainder of our CWA tonight and overnight, much like what happened last night. The nature of tonight's storms will be more scattered. Model continue to have a difficult time agreeing where most of the precipitation will be realized. Sunday, SPC has outline part of northeast Montana for and enhanced risk of severe thunderstorms. Even though that is just the eastern narrow edge of our area, much of the remaining eastern two-thirds of our CWA is outlined for a slight risk of severe thunderstorms. Model are a bit more in agreement here with the alignment, trajectory, timing, and placement of these storms. It should be noted that the significant precipitation amounts that have recently been depicted in the model solutions have back off somewhat. Expecting these storms to emerge from central and southern Montana, then intensify over our CWA during the mid-day hours, then become severe as they move through our eastern CWA. The intense 2+ inches of accumulation now seem to be favored more for North Dakota and Saskatchewan. Tried to adjust the forecast PoPs and QPF to reflect this thinking and model trends. Monday, as the main upper-level circulation and colder air filters into the area from the west, the back-side, wrap-around precipitation will be a bit more widespread. Good amounts of rain accumulation will continue to be possible. It should be noted that a Lake Wind Advisory could be needed for Monday with expected strong winds on the back-side of this system. BMickelson .LONG TERM...Mon night through Sat... Update: The going forecast as described below stands, with minimal changes. Gilchrist Previous long term discussion: Upper low moving across the northern plains through the early part of next week will keep showers and thunderstorms over the region into Tuesday. Widespread rain will be tapering off from the west as the system lifts into Manitoba. The remainder of the period will feature unsettled conditions with generally west to northwest flow aloft. No strong system indicated in the models but enough moisture and instability in the flow for the potential for a few thunderstorms most days, with best chances near the Canadian border. With the northwest flow temperatures will be slightly below normal for the period. By the end of the week, models indicating the formation of another upper low over the Pacific Northwest with flow potentially turning back to the southwest. Low confidence still for any significant weather with large spread for position of this low in the models. Ebert && .AVIATION... Flight category: mainly VFR. Synopsis: Quiet conditions are expected through most of the day, with sct-bkn mid and high clouds. Another round of thunderstorms will move across the region late this afternoon through the overnight hours tonight which could produce a brief reduction in flight conditions and gusty winds. Winds: Northwest 5-10kts, going northeast by early Sunday morning. Gilchrist && .GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE. && weather.gov/glasgow
Hazardous weather outlook, Jul 9, 3:20 AM MDT, 16 hours 31 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
Local storm report, Jul 9, 3:25 PM MDT, 4 hours 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, Jul 9, 5:25 PM MDT, 2 hours 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>Special weather statement, Jul 9, 5:48 PM MDT, 2 hours 3 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>Special weather statement, Jul 9, 6:50 PM MDT, 1 hour 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>Local storm report, Jul 9, 7:29 PM MDT, 22 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, Jul 9, 7:47 PM MDT, 4 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 9, 6:04 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie | 35 min |
| Jul 9, 6:50 PM MDT | Special Weather Statement | GGW | Phillips | 55 min |
| Jul 9, 7:04 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 56 min |
| Jul 9, 8:39 PM MDT | Special Weather Statement | GGW | Daniels | 66 min |
| Jul 9, 9:56 PM MDT | Special Weather Statement | GGW | Wibaux | 49 min |
| Jul 9, 10:35 PM MDT | Special Weather Statement | GGW | Sheridan | 55 min |
| Jul 10, 1:26 PM MDT | Special Weather Statement | GGW | Wibaux | 49 min |
| Jul 10, 2:43 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie | 31 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2016Every severe thunderstorm warning in 2016
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.