Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 69, NWS Gray, ME

July 16, 2024York County, Maine; 4 counties in New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jul 16, 2024, 8:25 PM EDT for York County, Maine; 4 counties in New Hampshire. It was in force for 50 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 16, 2024, 8:25 PM EDT (00:25 UTC)
Expired: Jul 16, 2024, 9:15 PM EDT
In force: 50 min
Issued by: NWS Gray, ME
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties York County, ME, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH

The radar

The Portland,ME radar (KGYX), 111 km from the middle of the area, began a volume at 00:25 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 16, 5:55 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Gray, ME (KGYX), launched 00:00Z, 0.4 hours before the alert went out and 111 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: 471 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1436 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

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 16, 6:18 PM EDT, 2 hours 7 minutes earlier.

Area forecast discussion, Jul 16, 6:18 PM EDT, 2 hours 7 minutes before

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Hazardous weather outlook, Jul 16, 5:32 PM EDT, 2 hours 53 minutes before

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In the hours before

Local storm report, Jul 16, 7:42 PM EDT, 43 minutes before

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Local storm report, Jul 16, 7:49 PM EDT, 36 minutes before

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Local storm report, Jul 16, 7:56 PM EDT, 29 minutes before

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Local storm report, Jul 16, 7:58 PM EDT, 27 minutes before

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Local storm report, Jul 16, 8:09 PM EDT, 16 minutes before

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      <p id="message2">
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Jul 16, 8:12 PM EDT, 13 minutes before

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      <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.
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The office that day

Everything else NWS Gray, ME issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 16, 8:38 PM EDT	Special Weather Statement	GYX	Cumberland, York	52 min
Jul 16, 8:41 PM EDT	Special Marine Warning	GYX		64 min
Jul 16, 8:52 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, York	45 min
Jul 16, 9:02 PM EDT	Special Weather Statement	GYX	Cumberland	43 min
Jul 17, 3:36 PM EDT	Special Weather Statement	GYX	Kennebec	24 min
Jul 17, 3:50 PM EDT	Special Weather Statement	GYX	Oxford	25 min
Jul 17, 4:58 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Kennebec, Oxford	47 min
Jul 17, 5:31 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Kennebec	24 min
Jul 17, 5:52 PM EDT	Special Weather Statement	GYX	Waldo	38 min
Jul 17, 7:53 PM EDT	Special Marine Warning	GYX		97 min
Jul 16, 8:36 PM EDT	Areal Flood Advisory	GYX	Hillsborough, Rockingham	2 hr
Jul 17, 2:49 PM EDT	Special Weather Statement	GYX	Coos	26 min
Jul 17, 2:51 PM EDT	Special Weather Statement	GYX	Cheshire, Sullivan	39 min
Jul 17, 7:02 PM EDT	Special Weather Statement	GYX	Rockingham	43 min
Jul 17, 7:42 PM EDT	Severe Thunderstorm Warning	GYX	Rockingham	48 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2024 Severe Thunderstorm Warnings in Maine, 2024 Every severe thunderstorm warning in 2024

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.