A shortwave trough and an associated cold front approached the forecast area on the afternoon of June 17th. Moderate to strong speed shear shifted into southern Maine by mid afternoon as CAPE values peaked.
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 shortwave trough and an associated cold front approached the forecast area on the afternoon of June 17th. Moderate to strong speed shear shifted into southern Maine by mid afternoon as CAPE values peaked. Several severe thunderstorms developed during the remainder of the afternoon with wind damage the main feature with these storms. Some small hail was also reported.
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 Jun 17, 2:12 PM EST, 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 312 PM EDT MON JUN 17 2013 .SYNOPSIS... A COLD FRONT WILL PUSH SOUTHEAST ACROSS NEW ENGLAND TONIGHT THEN STALL TO OUR SOUTH ON TUESDAY. WEAK LOW PRESSURE WILL TRACK TO THE NORTHEAST ALONG THE FRONT TUESDAY NIGHT...STAYING JUST BEYOND THE GULF OF MAINE. HIGH PRESSURE WILL BUILD EAST ACROSS THE REGION FOR WEDNESDAY AND THURSDAY. A WEAK COLD FRONT WILL DROP SOUTH ACROSS THE AREA FRIDAY. A SERIES OF WEAK DISTURBANCES WILL RACE EASTWARD AND BRING MILD BUT UNSETTLED WEATHER TO THE AREA FOR THE UPCOMING WEEKEND AND EARLY NEXT WEEK. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... A COLD FRONT PUSHES SOUTHEAST ACROSS THE FORECAST AREA TONIGHT WITH SHOWERS AND SCATTERED THUNDERSTORMS AHEAD OF THE FRONT. THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT THROUGH 9 PM THIS EVENING FOR OUR THREE SOUTHERN MOST NEW HAMPSHIRE COUNTIES. ELSEWHERE CONVECTION WON'T BE NEARLY AS STRONG AS INSTABILITY IS MUCH LOWER. NOT MUCH DIRECTIONAL SHEAR BUT FAIRLY STRONG SPEED SHEAR WITH WESTERLY WINDS FAIRLY STRONG ALOFT. THIS COULD PRODUCE ISOLATED SHORT LINES AND BOW ECHOES TO PRODUCE STRONG/POSSIBLY DAMAGING WIND GUSTS. SOME HAIL POSSIBLE...GETTING REPORTS OF PEA SIZE HAIL IN SOUTHERN NEW HAMPSHIRE. AS THE EVENING WEARS ON THE CONVECTION SHOULD END OR AT LEAST DROP OFF DRAMATICALLY. PATCHY FOG WILL FORM...ESPECIALLY IN AREAS THAT SEE RAINFALL. LOWS TONIGHT RANGE FROM THE 40S NORTH TO THE 50S SOUTH AS WINDS DROP OFF DURING THE EVENING HOURS AND REMAIN FAIRLY LIGHT FOR THE REST OF THE NIGHT. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/... THE SLOW MOVING FRONT SETTLES JUST TO OUR SOUTH AS AN UPPER LEVEL DISTURBANCE RIDES EASTWARD ALONG THE BOUNDARY ON TUESDAY. THIS WILL PROVIDE A CHANCE OF SHOWERS AND THUNDERSTORMS OVER SOUTHERN ZONES WHILE OUR NORTHERN ZONES WILL BE A BIT TOO FAR NORTH TO BE IMPACTED BY THESE SYSTEMS AND ARE EXPECTED TO BE MOSTLY DRY. WEAK LOW PRESSURE MOVES TO THE NORTHEAST ALONG THE FRONT TUESDAY NIGHT BRINGING AN END TO ANY RAIN OVER SOUTHERN ZONES. ON TUESDAY THE CLOUDS AND SHOWERS WILL KEEP TEMPERATURES COOLER SOUTH WHILE COOLER AIR COMING IN FROM THE NORTH BEHIND THE FRONT WILL HOLD TEMPERATURES DOWN SOME IN THE NORTH. OVERALL EXPECT HIGHS ON TUESDAY IN THE MID 60S TO MID 70S. TUESDAY NIGHT SHOULD SEE SLOWLY IMPROVING WEATHER WITH TEMPERATURES COOLING OFF INTO THE LOWER TO MID 40S NORTH AND UPPER 40S TO LOWER 50S SOUTH. && .LONG TERM /WEDNESDAY THROUGH MONDAY/... THE MODELS ARE IN DECENT AGREEMENT THROUGH FRIDAY ON LONGWAVE PATTERN BEFORE DIFFERENCES ARISE. THE GFS SHIFTS THE RIDGE AXIS EAST INTO NEW ENGLAND BY SATURDAY WHILE THE ECMWF KEEPS THE RIDGE AXIS THROUGH THE GREAT LAKES WITH BROAD TROUGHING ACROSS THE FORECAST AREA. WHILE DIFFERENCES EXIT IN THE LONGWAVE SOLUTION...THE MODEL SUITE DOES ADVERTISE A MEAN JET LOCATION NEAR THE INTERNATIONAL BORDER WHICH ALSO SERVES TO INCREASE FORECAST UNCERTAINTY FROM THIS WEEKEND AND BEYOND. A BLEND OF ECMWF AND GFS SUGGESTS TEMPERATURES SHOULD AVERAGE NEAR TO SLIGHTLY ABOVE NORMAL FOR MUCH OF THE PERIOD. IN THE DAILIES...HIGH PRESSURE WILL BUILD EAST ACROSS THE REGION FOR WEDNESDAY AND THURSDAY. A WEAK COLD FRONT WILL DROP SOUTH ACROSS THE AREA FRIDAY. A SERIES OF WEAK DISTURBANCES WILL RACE EASTWARD AND BRING MILD BUT UNSETTLED WEATHER TO THE AREA FOR THE UPCOMING WEEKEND AND EARLY NEXT WEEK. && .AVIATION /19Z MONDAY THROUGH SATURDAY/... SHORT TERM /THROUGH TUESDAY NIGHT/...VARIABLE CONDITIONS IN SHOWERS AND THUNDERSTORMS THIS EVENING THEN VFR EXCEPT FOR AREAS OF FOG LOWERING TO IFR OR MAYBE LOCALLY TO LIFR. VFR ON TUESDAY WITH POSSIBLE MVFR OR IFR DEVELOPING IN SOUTHERN AREAS THEN IMPROVING AGAIN TUESDAY NIGHT. LONG TERM... FRI...SCT MVFR POSSIBLE IN SHOWERS AND THUNDERSTORMS. && .MARINE... SHORT TERM /TONIGHT THROUGH TUESDAY NIGHT/...SOUTHWESTERLY WINDS AHEAD OF THE FRONT MAY GUST UP TO 20 KNOTS WITH SEAS AS HIGH AS 4 FEET THROUGH THIS EVENING THEN WINDS SHIFT TO THE NORTHWEST LATER TONIGHT THROUGH TUESDAY AND INTO TUESDAY NIGHT BEHIND A SLOW MOVING COLD FRONT. SEAS WILL SLOWLY LOWER AS WINDS TURN OFFSHORE. EXPECT THAT WINDS AND SEAS REMAIN BELOW SMALL CRAFT ADVISORY LEVELS THROUGH TUESDAY NIGHT. LONG TERM... WINDS AND SEAS ARE EXPECTED TO REMAIN BELOW SMALL CRAFT THRESHOLD. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 125 PM EDT MON JUN 17 2013 MEZ007>009-012>014-018>028-NHZ001>006-009-010-181730- 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-BELKNAP-STRAFFORD- 125 PM EDT MON JUN 17 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW HAMPSHIRE AND NORTHERN NEW HAMPSHIRE. .DAY ONE...THIS AFTERNOON AND TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS AFTERNOON. THERE IS THE POSSIBILITY THAT A FEW STORMS COULD PRODUCE SMALL HAIL AND GUSTY WINDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN THEIR REPORTS. NHZ007-008-013-014-181730- SULLIVAN-MERRIMACK-INTERIOR ROCKINGHAM-COASTAL ROCKINGHAM- 125 PM EDT MON JUN 17 2013 ...SEVERE THUNDERSTORM WATCH 321 IN EFFECT UNTIL 9 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW HAMPSHIRE AND SOUTHEASTERN NEW HAMPSHIRE. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN THEIR REPORTS. ANZ150>154-181730- 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- 125 PM EDT MON JUN 17 2013 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...THIS AFTERNOON AND 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 WILL LIKELY BE NEEDED. SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN THEIR REPORTS.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 247 PM EDT MON JUN 17 2013 MEZ021-022-028-171930- COASTAL WALDO-INTERIOR WALDO-KENNEBEC- 247 PM EDT MON JUN 17 2013 ...STRONG THUNDERSTORMS WILL IMPACT KENNEBEC COUNTY AND WALDO COUNTY THROUGH 330 PM EDT... AT 247 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS CENTERED 2 MILES NORTHEAST OF CHINA...OR ABOUT 7 MILES SOUTHEAST OF WATERVILLE...MOVING EAST AT 30 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND CHINA...ALBION...THORNDIKE...LIBERTY...FREEDOM...MONTVILLE... KNOX...MORRILL...JACKSON AND BROOKS THROUGH 330 PM EDT. HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS... EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED. LAT...LON 4463 6899 4435 6901 4441 6954 4459 6954 MARINE
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
304 PM EDT MON JUN 17 2013
MEZ019-020-024-171930-
ANDROSCOGGIN-COASTAL CUMBERLAND-INTERIOR CUMBERLAND-
304 PM EDT MON JUN 17 2013
...STRONG THUNDERSTORMS WILL IMPACT ANDROSCOGGIN COUNTY AND
CUMBERLAND COUNTY THROUGH 330 PM EDT...
AT 303 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 4 MILES SOUTH OF POLAND...OR
ABOUT 7 MILES SOUTH OF MECHANIC FALLS...MOVING EAST AT 30 MPH. THIS
CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND RANGE
PONDS STATE PARK...POLAND...MINOT...NEW GLOUCESTER...BRADBURY
MOUNTAIN STATE PARK...LISBON...DURHAM AND LISBON FALLS THROUGH 330 PM
EDT.
HAIL UP TO ONE HALF INCH IN DIAMETER...HEAVY DOWNPOURS...EXCESSIVE
CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH CAN BE
EXPECTED.
IF YOU ARE OUTDOORS AND STORMS APPROACH YOUR LOCATION...MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE MORE THAN 5
MILES AWAY FROM THE PARENT THUNDERSTORM.
LAT...LON 4389 7008 4392 7049 4409 7046 4410 7044
4407 7003
MARINESPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
318 PM EDT MON JUN 17 2013
NHZ008-171945-
MERRIMACK-
318 PM EDT MON JUN 17 2013
...STRONG THUNDERSTORMS WILL IMPACT MERRIMACK COUNTY THROUGH 345 PM
EDT...
AT 318 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED OVER WEBSTER...OR ABOUT 10
MILES SOUTH OF FRANKLIN...MOVING EAST AT 30 MPH. THIS CLUSTER OF
STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND WEBSTER...
SALISBURY...CONTOOCOOK...CANTERBURY...BOSCAWEN...PENACOOK...
CONCORD...LOUDON...NORTH PEMBROKE AND CHICHESTER THROUGH 345 PM EDT.
HAIL UP TO ONE HALF INCH IN DIAMETER...HEAVY DOWNPOURS...EXCESSIVE
CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE
EXPECTED.
IF YOU ARE OUTDOORS AND STORMS APPROACH YOUR LOCATION...MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE MORE THAN 5
MILES AWAY FROM THE PARENT THUNDERSTORM.
LAT...LON 4338 7141 4333 7132 4318 7132 4322 7176
4340 7173
MARINESPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
326 PM EDT MON JUN 17 2013
MEZ022-027-028-172015-
COASTAL WALDO-INTERIOR WALDO-KNOX-
326 PM EDT MON JUN 17 2013
...STRONG THUNDERSTORMS WILL IMPACT KNOX COUNTY AND WALDO COUNTY
THROUGH 415 PM EDT...
AT 326 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED OVER APPLETON...OR ABOUT 11
MILES NORTHWEST OF CAMDEN...MOVING EAST AT 35 MPH. THIS CLUSTER OF
STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND SEARSMONT...
APPLETON...HOPE...CAMDEN...CAMDEN HILLS STATE PARK...NORTHPORT...
LINCOLNVILLE...WARREN ISLAND STATE PARK AND ISLEBORO THROUGH 415 PM
EDT.
HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED.
IF YOU ARE OUTDOORS AND STORMS APPROACH YOUR LOCATION...MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE MORE THAN 5
MILES AWAY FROM THE PARENT THUNDERSTORM.
LAT...LON 4416 6880 4415 6880 4416 6889 4419 6886
4423 6891 4417 6895 4418 6899 4431 6894
4428 6899 4419 6905 4422 6932 4436 6931
4437 6894 4434 6893 4437 6892 4437 6886
4424 6891 4420 6886 4419 6879
MARINESPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
342 PM EDT MON JUN 17 2013
NHZ008-010-013-014-172015-
COASTAL ROCKINGHAM-INTERIOR ROCKINGHAM-MERRIMACK-STRAFFORD-
342 PM EDT MON JUN 17 2013
...STRONG THUNDERSTORMS WILL IMPACT STRAFFORD COUNTY...MERRIMACK
COUNTY AND ROCKINGHAM COUNTY THROUGH 415 PM EDT...
AT 342 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED OVER CHICHESTER...OR ABOUT 7
MILES EAST OF CONCORD...MOVING EAST AT 30 MPH. THIS CLUSTER OF STRONG
THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND NORTH PEMBROKE...BEAR
BROOK STATE PARK...SUNCOOK...PITTSFIELD...PEMBROKE...HOOKSETT...
EPSOM...CHICHESTER...ALLENSTOWN AND CANDIA THROUGH 415 PM EDT.
HAIL UP TO ONE HALF INCH IN DIAMETER...HEAVY DOWNPOURS...EXCESSIVE
CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH CAN BE
EXPECTED.
IF YOU ARE OUTDOORS AND STORMS APPROACH YOUR LOCATION...MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE MORE THAN 5
MILES AWAY FROM THE PARENT THUNDERSTORM.
LAT...LON 4307 7148 4332 7144 4332 7129 4329 7124
4332 7120 4332 7092 4302 7089
MARINESPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
344 PM EDT MON JUN 17 2013
MEZ024>026-172015-
COASTAL CUMBERLAND-LINCOLN-SAGADAHOC-
344 PM EDT MON JUN 17 2013
...STRONG THUNDERSTORMS WILL IMPACT SAGADAHOC COUNTY...LINCOLN COUNTY
AND CUMBERLAND COUNTY THROUGH 415 PM EDT...
AT 344 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 3 MILES SOUTHWEST OF BRUNSWICK NAVAL AIR
STATION...OR ABOUT 3 MILES SOUTH OF BRUNSWICK...MOVING EAST AT 30
MPH. THIS STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND
TOPSHAM...BRUNSWICK...BRUNSWICK NAVAL AIR STATION...BRUNSWICK
EXECUTIVE AIRPORT...WOOLWICH...PHIPPSBURG...BATH...GEORGETOWN...
ARROWSIC AND WESTPORT THROUGH 415 PM EDT.
HAIL UP TO ONE HALF INCH IN DIAMETER...HEAVY DOWNPOURS...EXCESSIVE
CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH CAN BE
EXPECTED.
IF YOU ARE OUTDOORS AND STORMS APPROACH YOUR LOCATION...MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE MORE THAN 5
MILES AWAY FROM THE PARENT THUNDERSTORM.
LAT...LON 4378 6964 4377 6965 4378 6967 4381 6970
4378 6971 4383 7004 4396 7005 4396 6960
MARINEThe Portland,ME radar (KGYX), 50 km away, was scanning. The volume nearest the first event began at 20:07 UTC.
3 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm downed several trees in North Boothbay.
A severe thunderstorm downed numerous trees in South Bristol resulting in many power outages.
A severe thunderstorm downed a tree on wires which caught fire on Rudolph Avenue in Kittery.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maine in 2013Every state in 2013This day in weather historyWarnings in Maine, June 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 2026-09-24. Each event’s entry at NCEI: 458697, 458695, 458694.