Alert archive / Maine / Mesoscale Discussions in 2007
Mesoscale Discussion 1889
The Storm Prediction Center issued this mesoscale discussion at Aug 25, 2007, 2:36 PM EDT for 7 counties in Maine; Carroll County, Coos County, Grafton County, New Hampshire; Essex County, Vermont. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Aug 25, 2007, 2:36 PM EDT (18:36 UTC)
- Expired
- Aug 25, 2007, 4:00 PM EDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
Counties Androscoggin County, ME, Franklin County, ME, Kennebec County, ME, Oxford County, ME, Penobscot County, ME, Piscataquis County, ME, Somerset County, ME, Carroll County, NH, Coos County, NH, Grafton County, NH, Essex County, VT
The radar
The Portland,ME radar (KGYX), 140 km from the middle of the area, began a volume at 18:35 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Caribou, ME (KCAR), launched 12:00Z, 6.6 hours before the alert went out and 257 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
- 647 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
<!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>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 3:16 PM EDT | Severe Thunderstorm Watch | SPC | Androscoggin, Aroostook, Cumberland, Franklin, Hancock, Kennebec and 10 more | 8 hr |
| Aug 25, 4:26 PM EDT | Mesoscale Discussion | SPC | Androscoggin, Cumberland, Franklin, Kennebec, Oxford, Penobscot and 3 more | 94 min |
| Aug 25, 6:48 PM EDT | Mesoscale Discussion | SPC | Androscoggin, Aroostook, Cumberland, Franklin, Hancock, Kennebec and 10 more | 87 min |
| Aug 25, 1:58 PM EDT | Severe Thunderstorm Watch | SPC | Addison, Bennington, Caledonia, Chittenden, Essex, Franklin and 8 more | 8 hr |
| Aug 25, 7:24 PM EDT | Mesoscale Discussion | SPC | Chittenden | 96 min |
Nearby
Mesoscale Discussions in Maine, 2007Mesoscale Discussions in New Hampshire, 2007Mesoscale Discussions in Vermont, 2007Every mesoscale discussion in 2007
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.