Alert archive / Maine / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 67, NWS Gray, ME

July 23, 2021Cumberland County, Sagadahoc County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Jul 23, 2021, 2:50 PM EDT for Cumberland County, Sagadahoc County, Maine. It was in force for 25 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 23, 2021, 2:50 PM EDT (18:50 UTC)
Expired: Jul 23, 2021, 3:15 PM EDT
In force: 25 min
Issued by: NWS Gray, ME
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cumberland County, ME, Sagadahoc County, ME

The radar

The Portland,ME radar (KGYX), 22 km from the middle of the area, began a volume at 18:50 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.

What was reported inside it

Time	Report	Where	Remark
Jul 23, 3:04 PM EDT	HAIL 0.25	Brunswick, ME	0.40 INCHES OF RAINFALL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 6.8 hours before the alert went out and 22 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: 16 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1504 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

792 
WUUS51 KGYX 231850
SVRGYX
MEC005-023-231915-
/O.NEW.KGYX.SV.W.0067.210723T1850Z-210723T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gray ME
250 PM EDT Fri Jul 23 2021

The National Weather Service in Gray Maine has issued a

* Severe Thunderstorm Warning for...
  East central Cumberland County in southwestern Maine...
  Southwestern Sagadahoc County in south central Maine...

* Until 315 PM EDT.

* At 250 PM EDT, a severe thunderstorm was located over Topsham,
  moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Brunswick, Topsham, Freeport, Harpswell, West Bath and Phippsburg. 

This includes Interstate 295 between mile markers 26 and 33.
 
This also includes...
  Orrs Island.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4379 6984 4374 7002 4393 7009 4393 7008
      4395 7006 4398 6996
TIME...MOT...LOC 1850Z 337DEG 18KT 4391 7000 

HAIL...1.00IN
WIND...60MPH
 
$$

MSC

1 follow-up statement

928 
WWUS51 KGYX 231907
SVSGYX

Severe Weather Statement
National Weather Service Gray ME
307 PM EDT Fri Jul 23 2021

MEC023-231916-
/O.CAN.KGYX.SV.W.0067.000000T0000Z-210723T1915Z/
Sagadahoc ME-
307 PM EDT Fri Jul 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SAGADAHOC COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4380 6985 4380 6988 4378 6987 4374 7002
      4387 7006 4391 6994 4391 6993 4392 6992
      4381 6985
TIME...MOT...LOC 1906Z 337DEG 18KT 4384 6996 

$$

MEC005-231915-
/O.CON.KGYX.SV.W.0067.000000T0000Z-210723T1915Z/
Cumberland ME-
307 PM EDT Fri Jul 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR EAST CENTRAL CUMBERLAND COUNTY...

At 306 PM EDT, a severe thunderstorm was located near Brunswick,
moving southeast at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Brunswick, Freeport, Harpswell, West Bath and Phippsburg. 

This also includes...
  Orrs Island.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4380 6985 4380 6988 4378 6987 4374 7002
      4387 7006 4391 6994 4391 6993 4392 6992
      4381 6985
TIME...MOT...LOC 1906Z 337DEG 18KT 4384 6996 

HAIL...1.00IN
WIND...60MPH
 
$$

MSC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 12:20 PM EDT	Special Weather Statement	GYX	York	25 min
Jul 23, 12:29 PM EDT	Special Weather Statement	GYX	Kennebec	31 min
Jul 23, 12:38 PM EDT	Special Weather Statement	GYX	York	37 min
Jul 23, 12:47 PM EDT	Special Weather Statement	GYX	Oxford	28 min
Jul 23, 12:57 PM EDT	Severe Thunderstorm Warning	GYX	York	33 min
Jul 23, 1:05 PM EDT	Special Weather Statement	GYX	Androscoggin	25 min
Jul 23, 1:09 PM EDT	Special Weather Statement	GYX	Kennebec	36 min
Jul 23, 1:30 PM EDT	Special Weather Statement	GYX	Androscoggin	30 min
Jul 23, 1:41 PM EDT	Special Weather Statement	GYX	Kennebec	34 min
Jul 23, 1:45 PM EDT	Special Weather Statement	GYX	York	30 min
Jul 23, 1:57 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford, York	27 min
Jul 23, 2:05 PM EDT	Special Weather Statement	GYX	Sagadahoc	25 min
Jul 23, 2:09 PM EDT	Special Weather Statement	GYX	Kennebec	36 min
Jul 23, 2:13 PM EDT	Severe Thunderstorm Warning	GYX	York	27 min
Jul 23, 2:16 PM EDT	Special Marine Warning	GYX		26 min
Jul 23, 2:21 PM EDT	Special Weather Statement	GYX	Somerset	39 min
Jul 23, 2:24 PM EDT	Severe Thunderstorm Warning	GYX	Oxford, York	51 min
Jul 23, 2:56 PM EDT	Special Marine Warning	GYX		34 min
Jul 23, 3:13 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Sagadahoc	32 min
Jul 23, 3:19 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Franklin, Kennebec, Oxford	41 min
Jul 23, 3:25 PM EDT	Severe Thunderstorm Warning	GYX	Kennebec, Somerset	23 min
Jul 23, 3:27 PM EDT	Special Marine Warning	GYX		48 min
Jul 23, 3:34 PM EDT	Special Weather Statement	GYX	Androscoggin	26 min
Jul 23, 3:39 PM EDT	Coastal Flood Statement	GYX	Cumberland, York	10 hr
Jul 23, 3:39 PM EDT	Special Marine Warning	GYX		66 min
Jul 23, 3:41 PM EDT	Special Weather Statement	GYX	Knox	34 min
Jul 23, 4:00 PM EDT	Special Weather Statement	GYX	Androscoggin	30 min
Jul 23, 4:09 PM EDT	Special Weather Statement	GYX	Androscoggin	36 min
Jul 23, 4:14 PM EDT	Special Weather Statement	GYX	Oxford	31 min
Jul 23, 4:22 PM EDT	Special Weather Statement	GYX	Kennebec	23 min
Jul 23, 4:44 PM EDT	Special Weather Statement	GYX	Androscoggin, Kennebec	31 min
Jul 23, 4:57 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Oxford	33 min
Jul 23, 5:23 PM EDT	Special Weather Statement	GYX	Lincoln	22 min
Jul 23, 5:28 PM EDT	Special Weather Statement	GYX	Cumberland, Sagadahoc	32 min
Jul 23, 5:35 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford	18 min
Jul 23, 5:53 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland	37 min
Jul 23, 6:17 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland	43 min
Jul 23, 6:19 PM EDT	Special Marine Warning	GYX		56 min
Jul 23, 6:30 PM EDT	Special Weather Statement	GYX	York	30 min
Jul 23, 6:57 PM EDT	Special Weather Statement	GYX	York	18 min
Jul 23, 7:06 PM EDT	Special Weather Statement	GYX	York	24 min

Nearby

Severe Thunderstorm Warnings in Maine, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.