Alert archive / Maine / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 100, NWS Gray, ME

September 6, 2014York County, Maine; Rockingham County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Sep 6, 2014, 12:57 PM EDT for York County, Maine; Rockingham County, New Hampshire. It was in force for 33 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 6, 2014, 12:57 PM EDT (16:57 UTC)
Expired: Sep 6, 2014, 1:30 PM EDT
In force: 33 min
Issued by: NWS Gray, ME
Area: Storm-based polygon

Counties York County, ME, Rockingham County, NH

The radar

The Portland,ME radar (KGYX), 91 km from the middle of the area, began a volume at 17:01 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, 5.0 hours before the alert went out and 91 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: 494 J/kg
Mixed-layer CIN: -168 J/kg
Mixed-layer LCL: 989 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 Sep 6, 9:43 AM EDT, 3 hours 14 minutes earlier.

Area forecast discussion, Sep 6, 9:43 AM EDT, 3 hours 14 minutes before

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Hazardous weather outlook, Sep 6, 4:12 AM EDT, 8 hours 45 minutes before

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    <section class="card" role="status" aria-live="polite">
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 6, 1:09 PM EDT	Special Marine Warning	GYX		66 min
Sep 6, 3:18 PM EDT	Severe Thunderstorm Warning	GYX	York	27 min
Sep 6, 3:46 PM EDT	Special Weather Statement	GYX	York	29 min
Sep 6, 3:49 PM EDT	Special Weather Statement	GYX	Oxford	41 min
Sep 6, 5:22 PM EDT	Special Weather Statement	GYX	Androscoggin, Cumberland	38 min
Sep 6, 5:27 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Kennebec, Oxford	33 min
Sep 6, 5:58 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Sagadahoc	32 min
Sep 6, 6:25 PM EDT	Special Marine Warning	GYX		35 min
Sep 6, 6:30 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Lincoln, Sagadahoc	30 min
Sep 6, 7:02 PM EDT	Special Marine Warning	GYX		43 min
Sep 6, 7:06 PM EDT	Special Weather Statement	GYX	Lincoln	24 min
Sep 6, 1:39 PM EDT	Special Weather Statement	GYX	Rockingham	21 min
Sep 6, 3:05 PM EDT	Special Weather Statement	GYX	Belknap	25 min
Sep 6, 3:59 PM EDT	Severe Thunderstorm Warning	GYX	Carroll, Grafton	46 min
Sep 6, 4:40 PM EDT	Special Weather Statement	GYX	Carroll	50 min

Nearby

Severe Thunderstorm Warnings in Maine, 2014 Severe Thunderstorm Warnings in New Hampshire, 2014 Every severe thunderstorm warning in 2014

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.