Alert archive / Maine / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 71, NWS Gray, ME

July 21, 2022Franklin County, Somerset County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Jul 21, 2022, 7:29 PM EDT for Franklin County, Somerset County, Maine. It was in force for 28 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 21, 2022, 7:29 PM EDT (23:29 UTC)
Expired: Jul 21, 2022, 7:57 PM EDT
In force: 28 min
Issued by: NWS Gray, ME
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Franklin County, ME, Somerset County, ME

The radar

The Portland,ME radar (KGYX), 150 km from the middle of the area, began a volume at 23:30 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 21, 11:37 AM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 11.5 hours before the alert went out and 151 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: 503 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1489 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 21, 4:36 PM EDT, 2 hours 53 minutes earlier.

Area forecast discussion, Jul 21, 4:36 PM EDT, 2 hours 53 minutes before

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Hazardous weather outlook, Jul 21, 4:51 PM EDT, 2 hours 38 minutes before

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In the hours before

Local storm report, Jul 21, 6:30 PM EDT, 59 minutes before

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Local storm report, Jul 21, 6:36 PM EDT, 53 minutes before

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Local storm report, Jul 21, 6:40 PM EDT, 49 minutes before

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Local storm report, Jul 21, 6:45 PM EDT, 44 minutes before

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Local storm report, Jul 21, 7:13 PM EDT, 16 minutes before

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Local storm report, Jul 21, 7:26 PM EDT, 3 minutes before

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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 21, 2:38 PM EDT	Severe Thunderstorm Warning	GYX	Franklin	67 min
Jul 21, 3:24 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford, York	66 min
Jul 21, 3:26 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford	49 min
Jul 21, 4:11 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland	64 min
Jul 21, 4:42 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Kennebec, Lincoln, Oxford, Sagadahoc	48 min
Jul 21, 5:06 PM EDT	Special Marine Warning	GYX		114 min
Jul 21, 5:08 PM EDT	Severe Thunderstorm Warning	GYX	York	52 min
Jul 21, 5:08 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland	56 min
Jul 21, 5:17 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Somerset	43 min
Jul 21, 1:12 PM EDT	Special Weather Statement	GYX	Sullivan	48 min
Jul 21, 1:14 PM EDT	Special Weather Statement	GYX	Grafton	46 min
Jul 21, 1:33 PM EDT	Severe Thunderstorm Warning	GYX	Grafton, Merrimack, Sullivan	57 min
Jul 21, 1:38 PM EDT	Severe Thunderstorm Warning	GYX	Coos	67 min
Jul 21, 1:42 PM EDT	Tornado Warning	GYX	Grafton, Merrimack, Sullivan	33 min
Jul 21, 1:46 PM EDT	Severe Thunderstorm Warning	GYX	Grafton	59 min
Jul 21, 2:03 PM EDT	Special Weather Statement	GYX	Cheshire	42 min
Jul 21, 2:23 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Grafton, Merrimack, Sullivan	67 min
Jul 21, 2:26 PM EDT	Severe Thunderstorm Warning	GYX	Grafton	49 min
Jul 21, 2:28 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire	62 min
Jul 21, 2:51 PM EDT	Severe Thunderstorm Warning	GYX	Carroll	54 min
Jul 21, 3:08 PM EDT	Severe Thunderstorm Warning	GYX	Hillsborough, Merrimack	67 min
Jul 21, 3:28 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire, Hillsborough	62 min
Jul 21, 4:08 PM EDT	Severe Thunderstorm Warning	GYX	Hillsborough, Merrimack, Rockingham	46 min
Jul 21, 4:12 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Grafton, Merrimack	51 min
Jul 21, 4:24 PM EDT	Severe Thunderstorm Warning	GYX	Hillsborough, Rockingham	66 min
Jul 21, 4:33 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire, Sullivan	42 min
Jul 21, 4:57 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire	48 min
Jul 21, 5:19 PM EDT	Severe Thunderstorm Warning	GYX	Hillsborough, Merrimack	56 min
Jul 21, 5:41 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire	30 min
Jul 21, 5:58 PM EDT	Areal Flood Advisory	GYX	Cheshire	92 min

Nearby

Severe Thunderstorm Warnings in Maine, 2022 Every severe thunderstorm warning in 2022

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.