Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 43, NWS Gray, ME

July 19, 2015Belknap County, Carroll County, Strafford County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jul 19, 2015, 2:46 PM EDT for Belknap County, Carroll County, Strafford County, New Hampshire. It was in force for 44 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 19, 2015, 2:46 PM EDT (18:46 UTC)
Expired: Jul 19, 2015, 3:30 PM EDT
In force: 44 min
Issued by: NWS Gray, ME
Area: Storm-based polygon

Counties Belknap County, NH, Carroll County, NH, Strafford County, NH

The radar

The Portland,ME radar (KGYX), 85 km from the middle of the area, began a volume at 18:47 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

Gray, ME (KGYX), launched 12:00Z, 6.8 hours before the alert went out and 85 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jul 19, 11:32 AM EDT, 3 hours 14 minutes earlier.

Area forecast discussion, Jul 19, 11:32 AM EDT, 3 hours 14 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, Jul 19, 4:43 AM EDT, 10 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>

In the hours before

Special weather statement, Jul 19, 9:22 AM EDT, 5 hours 24 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 19, 9:40 AM EDT, 5 hours 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>

Special weather statement, Jul 19, 2:42 PM EDT, 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 Gray, ME issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 19, 2:32 AM EDT	Special Weather Statement	GYX	Lincoln	58 min
Jul 19, 3:33 AM EDT	Special Weather Statement	GYX	Knox	42 min
Jul 19, 3:28 PM EDT	Severe Thunderstorm Warning	GYX	York	62 min
Jul 19, 4:11 PM EDT	Severe Thunderstorm Warning	GYX	York	49 min
Jul 19, 4:35 PM EDT	Special Marine Warning	GYX		55 min
Jul 19, 4:58 PM EDT	Severe Thunderstorm Warning	GYX	York	20 min
Jul 19, 5:02 PM EDT	Severe Thunderstorm Warning	GYX	York	43 min
Jul 19, 5:05 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland	40 min
Jul 19, 5:35 PM EDT	Severe Thunderstorm Warning	GYX	Oxford, York	55 min
Jul 19, 5:36 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	39 min
Jul 19, 5:43 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford, York	30 min
Jul 19, 6:00 PM EDT	Severe Thunderstorm Warning	GYX	York	28 min
Jul 19, 6:27 PM EDT	Severe Thunderstorm Warning	GYX	York	48 min
Jul 19, 6:36 PM EDT	Special Weather Statement	GYX	Oxford	24 min
Jul 19, 7:30 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	45 min
Jul 19, 7:36 PM EDT	Special Weather Statement	GYX	York	39 min
Jul 18, 9:42 PM EDT	Special Weather Statement	GYX	Grafton	48 min
Jul 19, 9:22 AM EDT	Special Weather Statement	GYX	Coos	38 min
Jul 19, 9:40 AM EDT	Special Weather Statement	GYX	Coos	50 min
Jul 19, 2:42 PM EDT	Special Weather Statement	GYX	Belknap	33 min
Jul 19, 3:56 PM EDT	Special Weather Statement	GYX	Belknap	49 min
Jul 19, 4:06 PM EDT	Special Weather Statement	GYX	Belknap	24 min
Jul 19, 4:26 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Merrimack, Strafford	49 min
Jul 19, 4:27 PM EDT	Special Weather Statement	GYX	Coos	48 min
Jul 19, 4:43 PM EDT	Special Weather Statement	GYX	Carroll	32 min
Jul 19, 5:00 PM EDT	Special Weather Statement	GYX	Grafton	45 min
Jul 19, 5:11 PM EDT	Severe Thunderstorm Warning	GYX	Grafton	64 min
Jul 19, 5:45 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Grafton, Merrimack	60 min
Jul 19, 6:24 PM EDT	Severe Thunderstorm Warning	GYX	Carroll, Coos, Grafton	66 min
Jul 19, 6:57 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Merrimack	48 min
Jul 19, 7:17 PM EDT	Severe Thunderstorm Warning	GYX	Merrimack, Sullivan	43 min
Jul 19, 7:35 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Merrimack, Strafford	40 min
Jul 19, 7:46 PM EDT	Areal Flood Advisory	GYX	Carroll, Coos, Grafton	3 hr
Jul 19, 7:57 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Grafton, Merrimack, Sullivan	32 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2015 Every severe thunderstorm warning in 2015

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.