A cold front moving through northern New England produced scattered convection across northern and central Maine. A few of these thunderstorm cells became severe and produced mainly wind damage.
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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 cold front moving through northern New England produced scattered convection across northern and central Maine. A few of these thunderstorm cells became severe and produced mainly 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 Aug 10, 2:33 PM EST, 1 hour 32 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 333 PM EDT TUE AUG 10 2010 .SYNOPSIS... A COLD FRONT WILL CROSS THE REGION TONIGHT...AND WILL SET OFF SCATTERED SHOWERS AND THUNDERSTORMS THROUGH TONIGHT. HIGH PRESSURE WILL THEN BUILD OVER NORTHERN NEW ENGLAND THROUGH THE WEEKEND...PROVIDING A STRETCH OF FAIR WEATHER. A COLD FRONT APPROACHES FROM THE WEST EARLY NEXT WEEK. && .NEAR TERM /THROUGH TONIGHT/... SHOWERS AND THUNDERSTORMS ARE FORMING IN ASSOCIATION WITH A SHORTWAVE TROUGH MOVING SOUTHEAST THROUGH QUEBEC AND NORTHERN MAINE THIS AFTERNOON. LATEST RADAR IMAGERY SEEMS TO SHOW A LINE OF STORMS FORMING ON WHAT MAY BE THE SURFACE FRONT SLOWLY PUSHING SOUTHWARD THROUGH SOUTHERN QUEBEC. THESE STORMS WILL MOVE INTO NORTHERN NEW HAMPSHIRE AND NORTHWEST MAINE WITHIN THE NEXT FEW HOURS. MAIN THREAT WITH THIS ACTIVITY WILL BE LIGHTNING...HEAVY RAIN...AND POSSIBLY A FEW STRONG WIND GUSTS. THIS THREAT WILL ONLY LAST THROUGH THE EARLY EVENING AS STRONG MIXING HAS CREATED THE POTENTIAL FOR STRONG DOWNDRAFTS IN COLLAPSING THUNDERSTORMS. THIS THREAT SHOULD DIMINISH NOT LONG AFTER SUNSET. OTHERWISE...WITH DAYTIME HEATING SOME DRIER AIR WAS ABLE TO MIX DOWN TO THE SURFACE ACROSS MUCH OF THE AREA TODAY...AND IT IS THIS DRIER AIR COMBINED WITH WARMER TEMPERATURES ALOFT THAT HAS KEPT MOST CONVECTION FROM FORMING TODAY OUTSIDE OF THE AREA AIDED BY SYNOPTIC SCALE LIFT ACROSS SOUTHERN QUEBEC. A FEW ISOLATED SHOWERS OR STORMS MAY FORM THIS AFTERNOON...BUT THE MAIN FEATURE WILL BE THE COLD FRONT ADVANCING SOUTHWARD ACROSS THE REGION TONIGHT. MODEL SOUNDINGS INDICATE BEST INSTABILITY ARRIVES WITH THE SHORTWAVE TROUGH AND COLD FRONT THIS EVENING IN THE 5 TO 10 PM TIME FRAME. WITH THE ENHANCED LIFT FROM THE SYNOPTIC SCALE WAVE ALONG WITH THE SURFACE COLD FRONT...CONVECTIVE ACTIVITY MAY CONTINUE THROUGH THE NIGHT AND PASS THROUGH THE AREA BY TOMORROW MORNING AS THE COLD FRONT PUSHES OFFSHORE. TEMPERATURES TONIGHT FALL INTO THE LOW 60S AND UPPER 50S. DESPITE SLIGHTLY DRIER AIR BEHIND THE FRONT...STILL COULD SEE FOG FORMING IN FAVORED VALLEY LOCATIONS ESPECIALLY TOWARD MORNING. THIS WAS INCLUDED IN THE FORECAST. && .SHORT TERM /WEDNESDAY/... DRIER AIR MOVES INTO THE AREA ON LIGHT NORTHERLY WINDS. WILL PROBABLY STILL HAVE ENOUGH MOISTURE AROUND TO GENERATE A CUMULUS FIELD TOMORROW. CANNOT RULE OUT A STRAY SHOWER...BUT WAS NOT CONFIDENT ENOUGH TO INCLUDE MENTIONABLE POPS IN THE FORECAST. TEMPERATURES WARM INTO THE UPPER 70S AND LOW 80S. WITH THE LIGHT WINDS...EXPECT A SEA BREEZE TO AFFECT COASTAL LOCATIONS DURING THE AFTERNOON. && .LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/... 500MB RIDGING TO OUR WEST WILL SLOWLY SHIFT E AT THE END OF THE WEEK AND THROUGH THE WEEKEND. THIS WILL ALLOW SFC HIGH PRES TO BUILD OVER NRN NEW ENGLAND...ALLOWING FOR FAIR WX INTO SUNDAY. COOLER NE FLOW...WITH TEMPS SLIGHTLY BLO SEASONAL LEVELS...ON THU/FRI WILL TRANSITION TO SW OVER THE WEEKEND...WITH TEMPS RISING TO JUST ABOVE NORMAL BY SUNDAY. RIDGE BREAKS DOWN EARLY NEXT WEEK...WITH ANOTHER CHC FOR SHOWERS EARLY NEXT WEEK AS A COLD FRONT APPROACHED FROM THE WEST. && .AVIATION /19Z TUESDAY THROUGH SUNDAY/... SHORT TERM... MAY SEE THUNDERSTORMS AFFECT THE TERMINALS THIS EVENING...BUT CONFIDENCE WAS NOT HIGH ENOUGH TO INCLUDE IN THE FORECAST YET ASIDE FROM A CB REMARK. THIS WILL LIKELY END BY 06Z TONIGHT. WILL PROBABLY SEE FOG ONCE AGAIN AT CON AND LEB BY MORNING. QUIET TOMORROW WITH LIGHT NORTH WINDS. LONG TERM... GENERALLY VFR CONDITIONS EXPECTED. MAY SEE RADIATION FOG DEVELOP IN THE MORNINGS AT CON AND LEB WEDNESDAY AND THURSDAY NIGHTS. && .MARINE... SHORT TERM... LIGHT SOUTHWEST WINDS TODAY WILL SHIFT TO LIGHT NORTHERLY TOMORROW. SEAS SHOULD REMAIN FAIRLY CALM AS WELL...GENERALLY 2 TO 3 FEET. LONG TERM... NO FLAGS EXPECTED. LIGHT NE FLOW LATE THIS WEEK WILL TRANSITION TO SW OVER THE WEEKEND. && .TIDES/COASTAL FLOODING... HIGH ASTRONOMICAL TIDES TONIGHT WILL RAISE TIDE LEVELS TO 11.5 FEET AT PORTLAND. THE TIDE THIS AFTERNOON WAS ABOUT 0.5 FT ABOVE PREDICTED. WINDS ARE SOUTHWEST OVER THE WATERS AND VERY LIGHT. WAVES ONLY 2 TO 3 FEET. SO DO NOT EXPECT A SIGNIFICANT SURGE OR SPLASHOVER BUT IF THERE IS ANOTHER 0.5 FT SURGE AGAIN FOR THE HIGH TIDE AROUND MIDNIGHT TONIGHT IT IS POSSIBLE TO BRIEFLY REACH THE 12.0 FT FLOOD STAGE AT THE PORTLAND TIDE GAGE. WILL CONTINUE TO MONITOR THE SITUATION THROUGH THE EVENING AND ISSUE ADVISORIES OR STATEMENTS AS APPROPRIATE. && .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 TIDES/COASTAL FLOODING...KIMBLE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 415 PM EDT TUE AUG 10 2010 MEZ007>009-012>014-018>021-NHZ001>010-112015- NORTHERN OXFORD-NORTHERN FRANKLIN-CENTRAL SOMERSET-SOUTHERN OXFORD- SOUTHERN FRANKLIN-SOUTHERN SOMERSET-INTERIOR YORK- INTERIOR CUMBERLAND-ANDROSCOGGIN-KENNEBEC-NORTHERN COOS- SOUTHERN COOS-NORTHERN GRAFTON-NORTHERN CARROLL-SOUTHERN GRAFTON- SOUTHERN CARROLL-SULLIVAN-MERRIMACK-BELKNAP-STRAFFORD- 415 PM EDT TUE AUG 10 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW HAMPSHIRE AND NORTHERN NEW HAMPSHIRE. .DAY ONE...TONIGHT THE STORM PREDICTION CENTER OF THE NATIONAL WEATHER SERVICE HAS PLACED MOST OF INTERIOR NEW HAMPSHIRE AND MUCH OF INTERIOR WESTERN MAINE IN AN AREA WITH A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH THIS EVENING. SCATTERED THUNDERSTORMS ARE EXPECTED TO MOVE SOUTHEAST ACROSS THE REGION THROUGH THIS EVENING. THE MAIN THREAT IF SEVERE WEATHER DEVELOPS WILL BE FROM DAMAGING WIND GUSTS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED IF STRONG OR SEVERE THUNDERSTORMS DEVELOP THROUGH THIS EVENING. MEZ022>028-NHZ013-014-112015- INTERIOR WALDO-COASTAL YORK-COASTAL CUMBERLAND-SAGADAHOC-LINCOLN- KNOX-COASTAL WALDO-INTERIOR ROCKINGHAM-COASTAL ROCKINGHAM- 415 PM EDT TUE AUG 10 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE AND SOUTHEASTERN NEW HAMPSHIRE. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ150>154-112015- 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- 415 PM EDT TUE AUG 10 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...WEDNESDAY THROUGH MONDAY 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
326 PM EDT TUE AUG 10 2010
MEZ007>009-102030-
CENTRAL SOMERSET-NORTHERN FRANKLIN-NORTHERN OXFORD-
326 PM EDT TUE AUG 10 2010
...STRONG THUNDERSTORMS WILL IMPACT OXFORD COUNTY...SOMERSET COUNTY
AND FRANKLIN COUNTY THROUGH 430 PM EDT...
AT 325 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 9 MILES WEST OF COBURN
GORE...MOVING SOUTHEAST AT 25 MPH. THIS CLUSTER OF STRONG
THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND COBURN GORE...DAVIS...
TIM POND AND EUSTIS THROUGH 430 PM EDT.
SMALL HAIL...HEAVY DOWNPOURS...CLOUD-TO-GROUND LIGHTNING AND GUSTY
WINDS OF 35 TO 45 MPH CAN BE EXPECTED.
LAT...LON 4539 7067 4539 7065 4529 7032 4499 7072
4532 7104 4534 7102 4535 7100 4534 7095
4524 7087 4535 7082 4540 7084 4543 7080
4543 7077
ESSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 426 PM EDT TUE AUG 10 2010 MEZ008-009-013-014-102130- CENTRAL SOMERSET-NORTHERN FRANKLIN-SOUTHERN FRANKLIN-SOUTHERN SOMERSET- 426 PM EDT TUE AUG 10 2010 ...STRONG THUNDERSTORMS WILL IMPACT SOMERSET COUNTY AND FRANKLIN COUNTY THROUGH 530 PM EDT... AT 426 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 3 MILES SOUTHWEST OF STRATTON...OR ABOUT 7 MILES SOUTH OF EUSTIS...MOVING SOUTHEAST AT 25 MPH. THIS STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND STRATTON...REDINGTON... CARRABASSETT VALLEY...SALEM...KINGFIELD...STRONG...NEW PORTLAND AND NEW VINEYARD THROUGH 530 PM EDT. HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS... EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH CAN BE EXPECTED. LAT...LON 4495 6987 4476 7016 4507 7061 4522 7047 ES
The Portland,ME radar (KGYX), 114 km away, was scanning. The volume nearest the first event began at 21:06 UTC.
4 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm downed trees and wires on River Road near New Portland.
A severe thunderstorm downed trees and wires on Main Street in Madison.
A severe thunderstorm downed trees on Horseback Road near Clinton.
A severe thunderstorm downed trees in the vicinity of Johnson Flat Road and Route 100 near Burnham.
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: 257208, 257211, 257212, 257213.