Alert archive / Maine / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 50, NWS Gray, ME

July 8, 20204 counties in Maine

NWS Gray, ME issued this severe thunderstorm warning at Jul 8, 2020, 3:16 PM EDT for 4 counties in Maine. 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 8, 2020, 3:16 PM EDT (19:16 UTC)
Expired: Jul 8, 2020, 4:00 PM EDT
In force: 44 min
Issued by: NWS Gray, ME
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Androscoggin County, ME, Franklin County, ME, Kennebec County, ME, Oxford County, ME

The radar

The Portland,ME radar (KGYX), 69 km from the middle of the area, began a volume at 19:18 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 8, 2:00 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 7.3 hours before the alert went out and 69 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: 6 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 611 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 110 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 8, 3:10 PM EDT, 6 minutes earlier.

Area forecast discussion, Jul 8, 3:10 PM EDT, 6 minutes before

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Hazardous weather outlook, Jul 8, 3:10 PM EDT, 6 minutes before

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In the hours before

Special weather statement, Jul 8, 2:01 PM EDT, 1 hour 15 minutes before

Special Weather Statement
National Weather Service Gray ME
201 PM EDT Wed Jul 8 2020

MEZ012-033-081830-
Southern Oxford-Interior Cumberland Highlands-
201 PM EDT Wed Jul 8 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN OXFORD AND
NORTHWESTERN CUMBERLAND COUNTIES...

At 201 PM EDT, a strong thunderstorm was located near Waterford, or
near Bridgton, moving east at 30 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Bridgton, Fryeburg, Naples, Waterford, Harrison, Denmark, Lovell,
Otisfield, Sweden, Stoneham, Oxford, Norway, Albany and Paris.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4406 7094 4427 7082 4419 7046 4397 7061
TIME...MOT...LOC 1801Z 286DEG 25KT 4412 7079

ES

Special weather statement, Jul 8, 2:14 PM EDT, 1 hour 2 minutes before

Special Weather Statement
National Weather Service Gray ME
214 PM EDT Wed Jul 8 2020

NHZ003-005-081900-
Northern Grafton-Southern Grafton-
214 PM EDT Wed Jul 8 2020

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL GRAFTON COUNTY...

At 214 PM EDT, a strong thunderstorm was located near Fairlee, or 18
miles northeast of Lebanon, moving east at 20 mph.

Wind gusts up to 50 mph and half inch hail are possible with this
storm.

Locations impacted include...
Groton, Piermont, Woodstock, Lyme, Dorchester, Ellsworth, Wentworth,
Rumney and Orford.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4390 7216 4392 7212 4394 7212 4396 7210
      4397 7173 4377 7177 4381 7217
TIME...MOT...LOC 1814Z 265DEG 19KT 4388 7209

ES

Special weather statement, Jul 8, 2:34 PM EDT, 42 minutes before

Special Weather Statement
National Weather Service Gray ME
234 PM EDT Wed Jul 8 2020

NHZ002-003-081900-
Northern Grafton-Southern Coos-
234 PM EDT Wed Jul 8 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN COOS AND NORTH
CENTRAL GRAFTON COUNTIES...

At 233 PM EDT, a strong thunderstorm was located near Littleton,
moving east at 20 mph.

Wind gusts up to 50 mph and half inch hail are possible with this
storm.

Locations impacted include...
Littleton, Bethlehem, Carroll, Dalton, Whitefield, Monroe and Lyman.

This includes Interstate 93 between mile markers 121 and 131.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4431 7198 4435 7191 4434 7187 4436 7181
      4438 7182 4439 7180 4440 7180 4442 7157
      4425 7157
TIME...MOT...LOC 1833Z 266DEG 16KT 4435 7179

ES

Local storm report, Jul 8, 3:00 PM EDT, 16 minutes before

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Local storm report, Jul 8, 3:01 PM EDT, 15 minutes before

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Special weather statement, Jul 8, 3:08 PM EDT, 8 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 8, 1:54 PM EDT	Areal Flood Advisory	GYX	Oxford	4 hr
Jul 8, 2:01 PM EDT	Special Weather Statement	GYX	Androscoggin	29 min
Jul 8, 2:07 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Oxford	38 min
Jul 8, 2:53 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Oxford	52 min
Jul 8, 3:08 PM EDT	Special Weather Statement	GYX	Franklin, Somerset	67 min
Jul 8, 3:25 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland	50 min
Jul 8, 3:26 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford, Somerset	49 min
Jul 8, 3:54 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Franklin, Kennebec, Oxford, Somerset	51 min
Jul 8, 4:10 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford, Somerset	50 min
Jul 8, 4:34 PM EDT	Severe Thunderstorm Warning	GYX	Oxford, York	41 min
Jul 8, 4:39 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Franklin, Kennebec	51 min
Jul 8, 4:54 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Franklin, Kennebec, Oxford, Somerset, Waldo	51 min
Jul 8, 4:59 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford, York	46 min
Jul 8, 5:06 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford	39 min
Jul 8, 5:15 PM EDT	Areal Flood Advisory	GYX	Androscoggin, Franklin, Kennebec, Oxford	3 hr
Jul 8, 5:22 PM EDT	Areal Flood Advisory	GYX	Franklin, Somerset	3 hr
Jul 8, 5:24 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Oxford	51 min
Jul 8, 5:39 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Kennebec, Knox, Lincoln, Sagadahoc and 2 more	36 min
Jul 8, 5:41 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	34 min
Jul 8, 5:50 PM EDT	Special Weather Statement	GYX	Waldo	40 min
Jul 8, 6:02 PM EDT	Special Marine Warning	GYX		88 min
Jul 8, 6:02 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Kennebec, Lincoln, Oxford, Sagadahoc and 1 more	43 min
Jul 8, 6:16 PM EDT	Areal Flood Advisory	GYX	Androscoggin, Cumberland, Oxford	3 hr
Jul 8, 6:26 PM EDT	Severe Thunderstorm Warning	GYX	Knox, Lincoln, Waldo	49 min
Jul 8, 6:30 PM EDT	Areal Flood Advisory	GYX	Kennebec, Knox, Lincoln, Sagadahoc, Waldo	2 hr
Jul 8, 6:56 PM EDT	Special Marine Warning	GYX		64 min
Jul 8, 6:56 PM EDT	Special Weather Statement	GYX	York	34 min
Jul 8, 7:11 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, York	49 min
Jul 8, 3:29 AM EDT	Heat Advisory	GYX	Hillsborough, Merrimack, Rockingham	40 hr
Jul 8, 9:24 AM EDT	Flash Flood Watch	GYX	Hillsborough, Merrimack, Rockingham	11 hr
Jul 8, 1:37 PM EDT	Special Weather Statement	GYX	Carroll	53 min
Jul 8, 2:14 PM EDT	Special Weather Statement	GYX	Grafton	46 min
Jul 8, 2:19 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire, Sullivan	56 min
Jul 8, 2:36 PM EDT	Flash Flood Warning	GYX	Cheshire, Sullivan	114 min
Jul 8, 3:29 PM EDT	Special Weather Statement	GYX	Cheshire	31 min
Jul 8, 3:37 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire	53 min
Jul 8, 3:57 PM EDT	Special Weather Statement	GYX	Belknap	33 min
Jul 8, 4:23 PM EDT	Flash Flood Warning	GYX	Cheshire	3 hr
Jul 8, 4:25 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire	50 min
Jul 8, 4:27 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Merrimack, Strafford	48 min
Jul 8, 4:40 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire, Hillsborough	50 min
Jul 8, 5:09 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire, Hillsborough	51 min
Jul 8, 5:19 PM EDT	Severe Thunderstorm Warning	GYX	Carroll, Coos, Grafton	41 min
Jul 8, 5:21 PM EDT	Flash Flood Warning	GYX	Coos, Grafton	3 hr
Jul 8, 5:36 PM EDT	Flash Flood Warning	GYX	Cheshire, Hillsborough	3 hr
Jul 8, 5:58 PM EDT	Severe Thunderstorm Warning	GYX	Carroll, Coos, Grafton	47 min
Jul 8, 6:35 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Grafton	40 min
Jul 8, 6:52 PM EDT	Special Weather Statement	GYX	Belknap	23 min
Jul 8, 7:14 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Grafton, Merrimack, Strafford	46 min

Nearby

Severe Thunderstorm Warnings in Maine, 2020 Every severe thunderstorm warning in 2020

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.