Damage Survey PNS from KGYX

[akr...@iastate.edu]

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771 
NOUS41 KGYX 242140
PNSGYX
MEZ007>009-012>014-018>028-033-NHZ001>015-250145-

Public Information Statement
National Weather Service Gray ME
540 PM EDT Wed Jun 24 2026

...NWS Damage Survey for 06/24/26 Thunderstorm Wind Event...

Overview...A broken line of severe thunderstorms moved across most 
of New Hampshire during the afternoon of June 18th. While
instability was fairly meager, shear was extreme for the region,
especially in the low levels. This led to numerous instances of
mesocyclogenesis along the line. These tended to be areas where
strong wind gusts and wind damage were more likely. One of these
mesocyclones crossed Lake Winnipesaukee and was responsible for two
microbursts.

.Gilford-Tuftonboro Microburst #1...

Peak Wind Estimated:    90 mph
Path Length /statute/:  3.3 miles
Path Width /maximum/:   1,500 yards
Fatalities:             0
Injuries:               0

Start Date:             06/24/2026 
Start Time:             04:06 PM EDT
Start Location:         4 NNE Gilford / Belknap County / NH
Start Lat/Lon:          43.6023 / -71.3760

End Date:               06/24/2026
End Time:               04:10 PM EDT
End Location:           4 WSW Bridgewater / Carroll County / NH
End Lat/Lon:            43.6256 / -71.3165

Survey Summary: The first microburst occurred over the open water of 
Lake Winnipesaukee shortly after 4:00 PM on June 18th. Based on
damage reports this likely occurred in the vicinity of Round and 
Welch Islands in Gilford, New Hampshire. There were pictures of 
trees snapped on Round Island and reported damage on parts of Welch
Island. The microburst continued unimpeded by friction towards 
Sandy and Cow Islands in Tuftonboro, New Hampshire. There were 
at least three camps damaged by tree falls on Sandy Island. On the 
southwest side of Cow Island there was significant tree damage. At
least three additional camps were damaged by falling trees, as well 
as at least two docks that sustained damage. An estimated 1,500
trees, mostly softwood, were either snapped or uprooted by the
winds. The open water and lack of friction likely allowed this
microburst to expand beyond on the accepted definition of areal 
extent.

.Tuftonboro Microburst #2...

Peak Wind Estimated:    100 mph
Path Length /statute/:  0.75 miles
Path Width /maximum/:   0.50 miles
Fatalities:             0
Injuries:               1

Start Date:             06/24/2026
Start Time:             04:11 PM EDT
Start Location:         3 W Bridgewater / Carroll County / NH
Start Lat/Lon:          43.6310 / -71.2975

End Date:               06/24/2026
End Time:               04:13 PM EDT
End Location:           2 W Bridgewater / Carroll County/ NH
End Lat/Lon:            43.6346 / -71.2848

Survey Summary: It was determined that there was a second 
microburst just northeast of the first, along the path of the 
mesocyclone. There was no visible damage to the backlands of Cow 
Island, so the NWS Storm Damage Survey Team estimates the second 
microburst began somewhere just north of Barbers Pole channel 
before Tuftonboro Neck. This microburst was smaller in areal 
extent but more intense. Another 1,500 trees, again mostly 
softwood, were estimated to have been snapped or uprooted. These 
also caused the majority of the damage observed. There were five 
vehicles damaged, two of which were total losses. In addition, 
there were five cabins or outbuildings attached to summer camps 
that were destroyed and at least another twelve that were 
damaged by falling trees. Near the Sandy Island Dock several 
people escaped with minor cuts and scrapes when two trees fell 
through the shelter they were under. In a nearby parking lot a 
tree fell onto a car causing one minor hand injury in which 
medical attention was not necessary.

&&

NOTE:
The information in this statement is preliminary and subject to
change pending final review of the events and publication in NWS
Storm Data.

$$

Legro