A very hot and humid air mass remained entrenched across the forecast area on the 20th of July. An approaching cold front set the stage for more severe thunderstorms across the region.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GYX wrote it up.
A very hot and humid air mass remained entrenched across the forecast area on the 20th of July. An approaching cold front set the stage for more severe thunderstorms across the region. Once again elevated freezing levels inhibited development of large hail and all reports of severe weather involved wind damage.
The local office's own words before the first event, 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 the first event at Jul 20, 9:54 AM EST, 4 hours 6 minutes earlier.
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</html>PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAY ME
201 PM EDT SAT JUL 20 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0955 PM TSTM WND DMG MADISON 44.80N 69.88W
07/19/2013 SOMERSET ME LAW ENFORCEMENT
MULTIPLE TREES DOWN IN MADISON REPORTED BY SHERIIFS
OFFICE
&&
CORRECTED EVENT TIME
EVENT NUMBER GYX1300247
MPKSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
204 PM EDT SAT JUL 20 2013
NHZ013-014-201830-
COASTAL ROCKINGHAM-INTERIOR ROCKINGHAM-
204 PM EDT SAT JUL 20 2013
...STRONG THUNDERSTORMS WILL IMPACT ROCKINGHAM COUNTY THROUGH 230 PM
EDT...
AT 204 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORM OVER SOUTHERN ROCKINGHAM COUNTY. THE
STRONGEST STORM WAS CENTERED 2 MILES SOUTHWEST OF NEWTON...OR ABOUT
8 MILES WEST OF NEWBURYPORT...MOVING EAST AT 40 MPH. THIS STRONG
THUNDERSTORM WILL AFFECT AREAS IN AND AROUND KINGSTON STATE
PARK...EAST HAMPSTEAD...PLAISTOW...KINGSTON...DANVILLE...
ATKINSON...NEWTON...EAST KINGSTON...SOUTH HAMPTON AND KENSINGTON
THROUGH 230 PM EDT.
GUSTY WINDS OF 35 TO 45 MPH CAN BE EXPECTED.
LAT...LON 4281 7111 4281 7116 4291 7119 4302 7073
4299 7074 4294 7078 4287 7082 4286 7086
4288 7092 4286 7097 4285 7103 4280 7107
KIMBLEThe Portland,ME radar (KGYX), 105 km away, was scanning. The volume nearest the first event began at 18:59 UTC.
1 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm downed large branches leading to power outages in Milan.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Hampshire in 2013Every state in 2013This day in weather historyWarnings in New Hampshire, July 2013
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 469514.