Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 2, NWS Gray, ME

March 26, 2021Belknap County, Carroll County, Strafford County, New Hampshire; Cumberland County, York County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Mar 26, 2021, 4:52 PM EDT for Belknap County, Carroll County, Strafford County, New Hampshire; Cumberland County, York County, Maine. It was in force for 38 min. 2 reports 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: Mar 26, 2021, 4:52 PM EDT (20:52 UTC)
Expired: Mar 26, 2021, 5:30 PM EDT
In force: 38 min
Issued by: NWS Gray, ME
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cumberland County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Strafford County, NH

The radar

The Portland,ME radar (KGYX), 51 km from the middle of the area, began a volume at 20:52 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
Mar 26, 4:55 PM EDT	TSTM WND GST 62	5 Se Ossipee, NH	TIME ESTIMATED FROM RADAR.
Mar 26, 4:55 PM EDT	HAIL 0.75	5 Se Ossipee, NH	TIME ESTIMATED FROM RADAR.

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, 8.9 hours before the alert went out and 50 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 485 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 305 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

673 
WUUS51 KGYX 262052
SVRGYX
MEC005-031-NHC001-003-017-262130-
/O.NEW.KGYX.SV.W.0002.210326T2052Z-210326T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gray ME
452 PM EDT Fri Mar 26 2021

The National Weather Service in Gray Maine has issued a

* Severe Thunderstorm Warning for...
  Northwestern York County in southwestern Maine...
  West central Cumberland County in southwestern Maine...
  Northwestern Strafford County in central New Hampshire...
  East central Belknap County in central New Hampshire...
  Southeastern Carroll County in northern New Hampshire...

* Until 530 PM EDT.

* At 451 PM EDT, severe thunderstorms were located along a line
  extending from near Cornish to Laconia, moving east at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Laconia, Alfred, Ossipee, Meredith, Moultonborough, Gorham, Buxton,
  Gray, Lebanon, Alton, Hollis, Hiram, Effingham, Cornish, Raymond,
  Standish, Wolfeboro, Waterboro, Belmont and Gilford.

This includes Interstate 95 between mile markers 63 and 64.
 
This also includes...
  Lake Winnipesaukee, Sebago Lake, and Douglas Mountain.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4382 7099 4379 7097 4381 7088 4381 7079
      4386 7080 4388 7075 4391 7076 4390 7030
      4362 7064 4346 7093 4353 7158
TIME...MOT...LOC 2051Z 263DEG 48KT 4382 7088 4356 7147 

HAIL...<.75IN
WIND...60MPH
 
$$

Clair

1 follow-up statement

973 
WWUS51 KGYX 262117
SVSGYX

Severe Weather Statement
National Weather Service Gray ME
517 PM EDT Fri Mar 26 2021

NHC001-003-017-262126-
/O.CAN.KGYX.SV.W.0002.000000T0000Z-210326T2130Z/
Strafford NH-Belknap NH-Carroll NH-
517 PM EDT Fri Mar 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN STRAFFORD...EAST
CENTRAL BELKNAP AND SOUTHEASTERN CARROLL COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4366 7073 4379 7064 4389 7046 4390 7030
      4362 7064 4354 7078 4359 7082
TIME...MOT...LOC 2116Z 263DEG 58KT 4388 7035 4357 7076 

$$

MEC005-031-262130-
/O.CON.KGYX.SV.W.0002.000000T0000Z-210326T2130Z/
York ME-Cumberland ME-
517 PM EDT Fri Mar 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTH CENTRAL YORK AND WEST CENTRAL CUMBERLAND COUNTIES...

At 516 PM EDT, severe thunderstorms were located along a line
extending from Gray to near Waterboro, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Alfred, Gorham, Buxton, Gray, Hollis, Standish, Raymond, Waterboro,
Limington, Limerick, Frye Island, Windham and Shapleigh.

This includes Interstate 95 between mile markers 63 and 64.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4366 7073 4379 7064 4389 7046 4390 7030
      4362 7064 4354 7078 4359 7082
TIME...MOT...LOC 2116Z 263DEG 58KT 4388 7035 4357 7076 

HAIL...<.75IN
WIND...60MPH
 
$$

Clair

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 25, 8:46 PM EDT	Dense Fog Advisory	GYX	Rockingham	15 hr
Mar 26, 3:31 AM EDT	Wind Advisory	GYX	Cheshire, Hillsborough, Merrimack, Sullivan	20 hr
Mar 26, 11:10 AM EDT	Special Weather Statement	GYX	Merrimack	35 min
Mar 26, 3:24 PM EDT	Special Weather Statement	GYX	Carroll, Grafton	36 min
Mar 26, 4:02 PM EDT	Special Weather Statement	GYX	Belknap, Carroll	28 min
Mar 26, 4:19 PM EDT	Severe Thunderstorm Warning	GYX	Carroll	41 min
Mar 26, 3:30 AM EDT	Gale Warning	GYX		27 hr
Mar 26, 12:21 PM EDT	Special Weather Statement	GYX	Androscoggin	24 min
Mar 26, 5:09 PM EDT	Special Weather Statement	GYX	Androscoggin, Sagadahoc	36 min
Mar 26, 5:22 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Kennebec, Lincoln, Sagadahoc	38 min
Mar 26, 5:29 PM EDT	Special Weather Statement	GYX	Cumberland	31 min
Mar 26, 5:54 PM EDT	Special Marine Warning	GYX		66 min
Mar 26, 6:00 PM EDT	Special Weather Statement	GYX	Knox, Lincoln	45 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2021 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.