Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 49, NWS Gray, ME
NWS Gray, ME issued this severe thunderstorm warning at Sep 7, 2023, 11:43 PM EDT for 5 counties in New Hampshire. It was in force for 13 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
- Sep 7, 2023, 11:43 PM EDT (03:43 UTC)
- Expired
- Sep 7, 2023, 11:56 PM EDT
- In force
- 13 min
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Belknap County, NH, Carroll County, NH, Coos County, NH, Grafton County, NH, Merrimack County, NH
The radar
The Portland,ME radar (KGYX), 99 km from the middle of the area, began a volume at 03:43 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
Brookhaven, NY (KOKX), launched 00:00Z, 3.7 hours before the alert went out and 352 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
- 1143 J/kg
- Mixed-layer CIN
- -178 J/kg
- Mixed-layer LCL
- 1431 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Gray, ME wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 7, 11:40 PM EDT, 3 minutes earlier.
Area forecast discussion, Sep 7, 11:40 PM EDT, 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>Hazardous weather outlook, Sep 7, 6:33 PM EDT, 5 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Gray ME 633 PM EDT Thu Sep 7 2023 MEZ007>009-012>014-018>028-033-NHZ001>015-082245- Northern Oxford-Northern Franklin-Central Somerset-Southern Oxford- Southern Franklin-Southern Somerset-Interior York- Central Interior Cumberland-Androscoggin-Kennebec-Interior Waldo- Coastal York-Coastal Cumberland-Sagadahoc-Lincoln-Knox-Coastal Waldo- Interior Cumberland Highlands-Northern Coos-Southern Coos- Northern Grafton-Northern Carroll-Southern Grafton-Southern Carroll- Sullivan-Merrimack-Belknap-Strafford-Cheshire-Eastern Hillsborough- Interior Rockingham-Coastal Rockingham- Western And Central Hillsborough- 633 PM EDT Thu Sep 7 2023 This Hazardous Weather Outlook is for Maine, south central Maine, southwest Maine, west central Maine, western Maine, New Hampshire, central New Hampshire, northern New Hampshire and southern New Hampshire. .DAY ONE...Tonight. Thunderstorms this evening into the first half of tonight are expected to produce gusty winds. There is a marginal (5%) chance for these winds to be damaging. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Strong to severe thunderstorms will be possible Friday from early afternoon into the evening. Multiple rounds of rainfall through the weekend and into early next week as a front stalls near the area. Repeated rounds of heavy rainfall over the same areas may lead to flooding, especially in poorly drained areas like those in urban centers. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ150>154-082245- Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM- Penobscot Bay- Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM- Casco Bay- Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM- 633 PM EDT Thu Sep 7 2023 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Sep 7, 8:09 PM EDT, 3 hours 34 minutes before
Special Weather Statement
National Weather Service Gray ME
809 PM EDT Thu Sep 7 2023
MEZ009-014-080045-
Southern Somerset ME-Central Somerset ME-
809 PM EDT Thu Sep 7 2023
...A strong thunderstorm will impact portions of south central
Somerset County through 845 PM EDT...
At 808 PM EDT, Doppler radar was tracking a strong thunderstorm near
Kingfield, or 19 miles north of Farmington, moving east at 15 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Madison, Bingham, Anson, Embden, New Portland, Concord, Lexington,
Moscow, Pleasant Ridge Plantation, Highland Plantation, and Solon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4511 6983 4485 6986 4486 7003 4486 7013
4490 7014 4491 7015 4494 7015 4495 7012
4495 7011 4505 7013
TIME...MOT...LOC 0008Z 271DEG 13KT 4496 7010
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
MSCLocal storm report, Sep 7, 8:21 PM EDT, 3 hours 22 minutes before
Preliminary Local Storm Report
National Weather Service Gray ME
821 PM EDT Thu Sep 7 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0535 PM Tstm Wnd Dmg 1 WNW Pittsburg 45.06N 71.40W
09/07/2023 Coos NH Amateur Radio
Trees down on forest lane in Pittsburg. Time
estimated by radar.
&&Local storm report, Sep 7, 8:23 PM EDT, 3 hours 20 minutes before
Preliminary Local Storm Report
National Weather Service Gray ME
823 PM EDT Thu Sep 7 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0535 PM Hail 1 WNW Pittsburg 45.06N 71.40W
09/07/2023 M1.00 inch Coos NH Amateur Radio
Hailstones 0.75 to 1.00 inch observed.
&&Local storm report, Sep 7, 8:26 PM EDT, 3 hours 17 minutes before
Preliminary Local Storm Report
National Weather Service Gray ME
826 PM EDT Thu Sep 7 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0535 PM Hail 3 ENE Stewartstown 45.02N 71.46W
09/07/2023 M1.00 inch Coos NH Amateur Radio
SOCIAL MEDIA PHOTOS OF 1 INCH HAIL IN
CLARKSVILLE AREA ON OLD CANAAN RD. HAIL
LASTED FOR 6-7 MINUTES. Time estimated by
radar.
&&Local storm report, Sep 7, 9:25 PM EDT, 2 hours 18 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, Sep 7, 9:48 PM EDT, 1 hour 55 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 Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 8:09 PM EDT | Special Weather Statement | GYX | Franklin | 36 min |
| Sep 7, 8:47 PM EDT | Severe Thunderstorm Warning | GYX | Somerset | 43 min |
| Sep 8, 12:26 AM EDT | Special Weather Statement | GYX | Franklin, Oxford | 64 min |
| Sep 8, 3:02 PM EDT | Special Marine Warning | GYX | 88 min | |
| Sep 8, 3:47 PM EDT | Severe Thunderstorm Warning | GYX | York | 43 min |
| Sep 8, 3:52 PM EDT | Special Marine Warning | GYX | 53 min | |
| Sep 8, 4:26 PM EDT | Severe Thunderstorm Warning | GYX | Cumberland, Sagadahoc, York | 64 min |
| Sep 8, 4:31 PM EDT | Special Marine Warning | GYX | 59 min | |
| Sep 8, 4:50 PM EDT | Severe Thunderstorm Warning | GYX | Oxford, York | 40 min |
| Sep 8, 5:32 PM EDT | Special Weather Statement | GYX | Androscoggin, Kennebec | 43 min |
| Sep 8, 7:50 PM EDT | Special Weather Statement | GYX | York | 55 min |
| Sep 7, 9:49 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 41 min |
| Sep 7, 10:18 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Coos, Grafton, Merrimack, Sullivan | 57 min |
| Sep 7, 10:32 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough, Merrimack, Sullivan | 25 min |
| Sep 7, 11:09 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Coos, Grafton, Merrimack | 51 min |
| Sep 7, 11:55 PM EDT | Special Weather Statement | GYX | Carroll | 35 min |
| Sep 8, 2:28 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Rockingham | 62 min |
| Sep 8, 3:10 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Rockingham | 65 min |
| Sep 8, 3:19 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Merrimack, Rockingham, Strafford | 36 min |
| Sep 8, 3:22 PM EDT | Special Weather Statement | GYX | Belknap | 23 min |
| Sep 8, 3:44 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 46 min |
| Sep 8, 4:01 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Merrimack, Strafford | 44 min |
| Sep 8, 4:09 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 51 min |
| Sep 8, 4:24 PM EDT | Severe Thunderstorm Warning | GYX | Sullivan | 36 min |
| Sep 8, 4:58 PM EDT | Flash Flood Warning | GYX | Cheshire | 3 hr |
| Sep 8, 5:10 PM EDT | Severe Thunderstorm Warning | GYX | Sullivan | 50 min |
| Sep 8, 5:12 PM EDT | Flash Flood Warning | GYX | Sullivan | 3 hr |
| Sep 8, 5:50 PM EDT | Special Weather Statement | GYX | Grafton | 25 min |
| Sep 8, 5:54 PM EDT | Severe Thunderstorm Warning | GYX | Carroll, Grafton | 36 min |
| Sep 8, 6:03 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire | 42 min |
| Sep 8, 6:11 PM EDT | Special Weather Statement | GYX | Grafton | 34 min |
| Sep 8, 6:37 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Hillsborough, Merrimack | 38 min |
| Sep 8, 6:54 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Merrimack, Rockingham, Strafford | 51 min |
| Sep 8, 7:31 PM EDT | Flash Flood Warning | GYX | Merrimack, Rockingham | 3 hr |
Nearby
Severe Thunderstorm Warnings in New Hampshire, 2023Every severe thunderstorm warning in 2023
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.