An isolated severe thunderstorm moved into western York County during the evening producing high winds which brought down several trees in a campground. One of the trees landed on a car and tent resulting in 6 injuries, one of which was serious.
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.
An isolated severe thunderstorm moved into western York County during the evening producing high winds which brought down several trees in a campground. One of the trees landed on a car and tent resulting in 6 injuries, one of which was serious.
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 Aug 9, 1:49 PM EST, 3 hours 11 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 249 PM EDT MON AUG 9 2010 .SYNOPSIS... A COLD FRONT WILL REMAIN NORTH OF THE REGION THROUGH TONIGHT...AND WILL SPARK SCATTERED SHOWERS AND THUNDERSTORMS. IT WILL PASS THROUGH THE AREA TUESDAY NIGHT. HIGH PRESSURE WILL THEN BUILD SOUTHWARD TOWARDS NEW ENGLAND FROM CANADA DURING THE MID TO LATE WEEK TIME FRAME. A WEAK COLD FRONT DROPS SOUTH ACROSS THE AREA TUESDAY...WITH ANOTHER CHANCE OF SHOWERS AND STORMS. COOLER HIGH PRESSURE BUILDS IN FROM THE NORTH WEDNESDAY THROUGH SATURDAY. ANOTHER COLD FRONT APPROACHES FROM THE WEST LATE IN THE WEEKEND. && .NEAR TERM /THROUGH TONIGHT/... SHOWERS AND THUNDERSTORMS EXPECTED THIS EVENING AS SHORTWAVE TROUGH MOVES EAST ACROSS NORTHERN NEW ENGLAND. WILL LIKELY SEE MOST OF THE ACTIVITY BEGIN TO DIE DOWN AS THE SUN SETS BUT MAY SEE SOME SHOWERS HOLD TOGETHER AS THEY MOVE OFF THE COAST BY MORNING. TEMPERATURES TONIGHT WILL FALL INTO THE 60S...WITH 50S POSSIBLE IN NORTHERN AREAS. && .SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/... SHOULD SEE SHOWERS AND THUNDERSTORMS DEVELOP ONCE AGAIN ON TUESDAY AFTERNOON AS MOISTURE REMAINS IN PLACE AND ANOTHER SHORTWAVE TROUGH APPROACHES FROM THE NORTHWEST. A COLD FRONT WILL ALSO BE DROPPING SOUTHWARD OUT OF CANADA AND APPROACHING THE NORTHERN PART OF THE AREA BY THE AFTERNOON. THIS WILL LIKELY AID IN THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS. UPPER LEVEL WIND SPEEDS INCREASE OUT OF THE WEST NORTHWEST TOMORROW AFTERNOON...YIELDING ENOUGH SHEER FOR ORGANIZED THUNDERSTORMS. HOWEVER...THE LIMITING FACTOR WILL BE INSTABILITY. RIGHT NOW FORECAST INSTABILITY MAY NOT BE ENOUGH TO SUPPORT LONG LIVED THUNDERSTORMS. BUT IF ENOUGH MOISTURE REMAINS IN PLACE AND TEMPERATURES ARE ABLE TO WARM INTO THE UPPER 80S AGAIN...THEN THERE MAY BE THE POTENTIAL FOR STRONGER STORMS TO DEVELOP. COLD FRONT MOVES OFFSHORE BY WEDNESDAY MORNING...BRINGING AN END TO THE PRECIPITATION. SOMEWHAT COOLER AND DRIER AIR WILL MOVE IN BEHIND THE FRONT. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... LARGE SCALE 500MB RIDGE LOOKS TO REMAIN ANCHORED TO OUR WEST...WITH CLOSED LOW LOCKED IN NEAR LABRADOR. THIS WILL KEEP NRN NEW ENGLAND IN NW ALOFT THROUGH FRIDAY. FLOW IN THE LOW LVLS LOOKS TO BE MORE N-NE...WHICH WILL MEAN A COOLER...BUT FAIR PERIOD. RIDGING SHIFTS TO THE EAST ON SATURDAY...WHICH SHOULD ALLOW FOR WARMER CONDITIONS. THE SFC RIDGE SHIFTS OFFSHORE BY SUNDAY...WITH A THREAT OF SHOWERS/THUNDERSTORMS LATE IN THE WEEKEND AND EARLY NEXT WEEK...AS ANOTHER COLD FRONT APPROACHES. && .AVIATION /18Z MONDAY THROUGH SATURDAY/... SHORT TERM...GENERALLY EXPECT VFR CONDITIONS TODAY AND TOMORROW. MAY HAVE THUNDERSTORMS THIS EVENING AFFECT PRIMARILY NEW HAMPSHIRE LOCATIONS. ANOTHER CHANCE OF THUNDERSTORMS TOMORROW AFTERNOON. TONIGHT MAY SEE SOME VALLEY FOG FORMING AND AFFECTING LEB BUT DID NOT HIT THIS TOO HARD IN THE FORECAST YET. LONG TERM...GENERALLY VFR WED THROUGH FRI. ONLY ISSUE WILL BE VLY FOG AT NIGHT...MAINLY AT KLEB/KCON. && .MARINE... SHORT TERM...SEAS GRADUALLY DIMINISHING WITH GENERALLY LIGHT WINDS EXPECTED. THUNDERSTORMS MAY PUSH OVER THE WATERS THIS EVENING. COLD FRONT CROSSES THE WATERS WEDNESDAY MORNING SHIFTING WINDS TO NORTHWEST. LONG TERM...ANTICIPATE NO FLAGS WED THROUGH SAT....AS HIGH PRES SLOWLY SHIFTS SWD OVER THE WATERS...AND THEN EASTWARD OFFSHORE. NE WINDS WED AND THU...SHIFTING TO S-SW FRI AND SAT. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && NEAR TERM...KIMBLE SHORT TERM...KIMBLE LONG TERM...CEMPA AVIATION...CEMPA/KIMBLE MARINE...CEMPA/KIMBLE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 427 PM EDT MON AUG 9 2010 MEZ007>009-012>014-018>028-NHZ001>010-013-014-102030- NORTHERN OXFORD-NORTHERN FRANKLIN-CENTRAL SOMERSET-SOUTHERN OXFORD- SOUTHERN FRANKLIN-SOUTHERN SOMERSET-INTERIOR YORK- INTERIOR CUMBERLAND-ANDROSCOGGIN-KENNEBEC-INTERIOR WALDO- COASTAL YORK-COASTAL CUMBERLAND-SAGADAHOC-LINCOLN-KNOX-COASTAL WALDO- NORTHERN COOS-SOUTHERN COOS-NORTHERN GRAFTON-NORTHERN CARROLL- SOUTHERN GRAFTON-SOUTHERN CARROLL-SULLIVAN-MERRIMACK-BELKNAP- STRAFFORD-INTERIOR ROCKINGHAM-COASTAL ROCKINGHAM- 427 PM EDT MON AUG 9 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW HAMPSHIRE...NORTHERN NEW HAMPSHIRE AND SOUTHEASTERN NEW HAMPSHIRE. .DAY ONE...TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW BUT A SLIGHT RISK FOR SOME SEVERE THUNDERSTORMS EXISTS FOR NEW HAMPSHIRE AMD WESTERN MAINE THROUGH THIS EVENING. THE MAIN THREAT FROM THESE STORMS WOULD BE LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ150>154-102030- STONINGTON ME TO PORT CLYDE ME OUT TO 25 NM-PENOBSCOT BAY- PORT CLYDE ME TO CAPE ELIZABETH ME OUT TO 25 NM-CASCO BAY- CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT TO 25 NM- 427 PM EDT MON AUG 9 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CASCO BAY...PENOBSCOT BAY...THE COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER MA...THE COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME AND THE COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
420 PM EDT MON AUG 9 2010
NHZ003-092100-
NORTHERN GRAFTON-
420 PM EDT MON AUG 9 2010
...STRONG THUNDERSTORMS WILL IMPACT GRAFTON COUNTY THROUGH 500 PM
EDT...
AT 419 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 10 MILES NORTHWEST OF
HAVERHILL...MOVING TO THE SOUTHEAST AT 25 MPH. THIS CLUSTER OF
STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND WOODSVILLE...
HAVERHILL...PIERMONT...BENTON AND LAKE TARLETON STATE PARK THROUGH
500 PM EDT.
HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS UP TO 40 MPH ARE
POSSIBLE WITH THESE THUNDERSTORMS.
LAT...LON 4401 7209 4403 7208 4408 7205 4410 7205
4416 7205 4411 7179 4388 7196 4395 7211
4397 7210 4398 7212
SJCSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
428 PM EDT MON AUG 9 2010
NHZ005-007-092115-
SOUTHERN GRAFTON-SULLIVAN-
428 PM EDT MON AUG 9 2010
...STRONG THUNDERSTORMS WILL IMPACT SULLIVAN COUNTY AND GRAFTON
COUNTY THROUGH 515 PM EDT...
AT 428 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED ABOUT 3 MILES SOUTH OF
LEBANON...MOVING TO THE SOUTHEAST AT 25 MPH. THIS CLUSTER OF STRONG
THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND MERIDEN...ENFIELD...
GRANTHAM...CROYDON...CANAAN...CARDIGAN MOUNTAIN STATE PARK...
SUNAPEE...SPRINGFIELD AND GRAFTON THROUGH 515 PM EDT.
HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS UP TO 40 MPH ARE
POSSIBLE WITH THESE THUNDERSTORMS.
LAT...LON 4366 7223 4364 7183 4346 7200 4344 7205
4336 7206 4356 7233
SJCSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
502 PM EDT MON AUG 9 2010
NHZ003-005-092145-
NORTHERN GRAFTON-SOUTHERN GRAFTON-
502 PM EDT MON AUG 9 2010
...STRONG THUNDERSTORMS WILL IMPACT GRAFTON COUNTY THROUGH 545 PM
EDT...
AT 502 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 3 MILES NORTHEAST OF HAVERHILL...
MOVING TO THE SOUTHEAST AT 25 MPH. THIS STRONG THUNDERSTORM WILL
AFFECT AREAS IN AND AROUND HAVERHILL...LAKE TARLETON STATE PARK
...WARREN...LOST RIVER AND WOODSTOCK THROUGH 545 PM EDT.
HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS UP TO 50 MPH ARE
POSSIBLE.
LAT...LON 4405 7207 4406 7206 4413 7201 4400 7163
4384 7182 4403 7209
SJCSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 514 PM EDT MON AUG 9 2010 NHZ008-009-092200- BELKNAP-MERRIMACK- 514 PM EDT MON AUG 9 2010 ...STRONG THUNDERSTORMS WILL IMPACT BELKNAP COUNTY AND MERRIMACK COUNTY THROUGH 600 PM EDT... AT 514 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED ABOUT 5 MILES NORTHWEST OF FRANKLIN ...MOVING TO THE SOUTHEAST AT 25 MPH. THIS STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND HILL...WEST FRANKLIN...FRANKLIN... TILTON-NORTHFIELD...TILTON...SANBORNTON...NORTH FIELD...LOCHMERE ...CANTERBURY AND BELMONT THROUGH 600 PM EDT. HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS... EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS UP TO 40 MPH ARE POSSIBLE. LAT...LON 4348 7127 4324 7145 4346 7177 4357 7167 SJC
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
546 PM EDT MON AUG 9 2010
NHZ001-002-092230-
NORTHERN COOS-SOUTHERN COOS-
546 PM EDT MON AUG 9 2010
...STRONG THUNDERSTORMS WILL IMPACT COOS COUNTY THROUGH 630 PM EDT...
AT 546 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 9 MILES WEST OF NORTH
STRATFORD...MOVING TO THE SOUTHEAST AT 25 MPH. THIS CLUSTER OF
STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND NORTH
STRATFORD...STRATFORD...GROVETON AND STARK THROUGH 630 PM EDT.
HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS UP TO TO 40 MPH
ARE POSSIBLE WITH THESE THUNDERSTORMS.
LAT...LON 4478 7159 4482 7158 4476 7128 4451 7145
4457 7155 4458 7155 4459 7156 4463 7157
4465 7160 4470 7163 4475 7164
SJCSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
557 PM EDT MON AUG 9 2010
NHZ005-007-092245-
SOUTHERN GRAFTON-SULLIVAN-
557 PM EDT MON AUG 9 2010
...STRONG THUNDERSTORMS WILL IMPACT SULLIVAN COUNTY AND GRAFTON
COUNTY THROUGH 645 PM EDT...
AT 557 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED ABOUT 10 MILES WEST OF
WHITE RIVER JUNCTION...MOVING TO THE EAST AT 25 MPH. THIS CLUSTER
OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND PLAINFIELD
...LEBANON...CORNISH...MERIDEN...CORNISH FLAT...ENFIELD...SUNAPEE
...SPRINGFIELD...NEWPORT AND GRANTHAM THROUGH 645 PM EDT.
HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS UP TO 45 MPH ARE
POSSIBLE WITH THESE THUNDERSTORMS.
LAT...LON 4347 7239 4352 7240 4357 7238 4360 7234
4369 7232 4365 7197 4362 7197 4349 7203
4346 7205 4329 7212 4340 7241
SJCThe Portland,ME radar (KGYX), 73 km away, was scanning. The volume nearest the first event began at 21:59 UTC.
1 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm downed several trees in a campground near Lebanon. One of the trees landed on a tent and car resulting in 6 injuries.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maine in 2010Every state in 2010This day in weather historyWarnings in Maine, August 2010
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 2026-09-24. Each event’s entry at NCEI: 257205.