Thunderstorms developed across northern Aroostook county during the afternoon of the 9th in advance of a cold front crossing the region. producing damaging winds.
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 CAR wrote it up.
Thunderstorms developed across northern Aroostook county during the afternoon of the 9th in advance of a cold front crossing the region. Several thunderstorms became severe...producing damaging winds.
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 Caribou, ME wrote its last area forecast discussion before the first event at Sep 9, 2:29 PM EST, 41 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CARIBOU ME 329 PM EDT WED SEP 9 2015 .SYNOPSIS... A COLD FRONT WILL CROSS THE AREA TONIGHT THEN STALL ALONG THE COAST THURSDAY INTO FRIDAY WHILE LOW PRESSURE MOVES ALONG THE FRONT. && .NEAR TERM /THROUGH THURSDAY/... THE MODELS ARE IN GOOD AGREEMENT THROUGH THE NEAR TERM PERIOD OF THE FORECAST. A COLD FRONT WILL EXTEND ACROSS NW MAINE AT THE START OF THE PERIOD. SHOWERS AND TSTMS EXPECTED ACROSS MAINLY NRN ME. TSTMS MAY CONTAIN GUSTY WNDS AND HEAVY RAIN. BY EARLY THURSDAY MORNING THE FRONT WILL MOVE TO CENTRAL MAINE. THE TSTMS WITH HEAVY PCPN WILL MOVE EAST INTO NEW BRUNSWICK. THE FRONT WILL MOVE INTO THE COASTAL WATERS BY TOMORROW MORNING WHERE IT IS EXPECTED TO REMAIN QUASI-STATIONARY ALONG THE DOWNEAST COAST TOMORROW AS A LOW ALONG THE COAST OF VIRGINIA TOMORROW MORNING DEEPENS AND TRACKS NORTHEAST ALONG THE FRONTAL BOUNDARY. BY THE END OF THE PERIOD THIS LOW WILL TRACK NE TO THE COAST OF NEW JERSEY. TO SMOOTH OUT MINOR DIFFERENCE IN THE MODELS USE A BLEND THE GFS/ECMWF/NAM/GEM FOR MAX/MIN TEMP WND/POP/SKY. LOADED NAWAVE 4 FOR SEAS IN THE COASTAL WATERS. WIND GUST MIXING LAPSE RATE TOOL HAD A GOOD HANDLE ON CURRENT WIND GUSTS USED IT FOR WIND GUSTS GRID FORECAST. LOADED HPC GUIDANCE FOR QPF. && .SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/... THE CONCERN FOR THURSDAY NIGHT INTO FRIDAY WILL BE THE TRACK OF A LOW PRESSURE SYSTEM ALONG THE STALLED COLD FRONT. AT THIS POINT...THE LOW IS EXPECTED TO MEANDER FROM THE JERSEY COAST ON THURSDAY EVENING TOWARDS A POINT SOUTH OF CAPE COD BY EARLY FRIDAY. AN UPPER LEVEL SHORTWAVE ASSOCIATED WITH THIS SURFACE LOW WILL TEND TO TAKE A MORE NORTHEASTWARD PATH AS A BROAD UPPER LEVEL TROUGH DIGS IN THE WESTERN GREAT LAKES ON FRIDAY. AT THIS TIME...WILL BRING OVERRUNNING PRECIP INTO BANGOR AND THE DOWN EAST REGION ON THURSDAY NIGHT AND CONTINUE INTO FRIDAY. ON FRIDAY...WILL ASSIGN THE HIGHEST POPS TO THE DOWN EAST REGION WHILE KEEPING THE SAINT JOHN VALLEY DRY. WHILE THIS LOW IS NOT TROPICAL...THERE IS DEEP MOISTURE WITH HIGH PWS AND A DEEP WARM CLOUD LAYER. SOME UPPER LEVEL INSTABILITY IS ALSO POSSIBLE. AS A RESULT...RAINFALL AMOUNTS MAY REACH NEARLY 2 INCHES THURSDAY NIGHT INTO FRIDAY FOR BANGOR AND DOWN EAST. THERE WILL PROBABLY BE SOME CLEARING LATER FRIDAY...ESPECIALLY IN THE WESTERN ZONES. THIS CLEARING WILL BE DUE TO A BUILDING HIGH PRESSURE SYSTEM THAT IS EXPECTED TO PROVIDE FAIR WEATHER FRIDAY NIGHT AND SATURDAY. FOG LOOKS LIKE A PRETTY LIKELY THREAT WITH THE ANTECEDENT MOISTURE...CLEAR SKIES AND LIGHT WINDS. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... HIGH PRESSURE WILL MOVE INTO THE CANADIAN MARITIMES ON SUNDAY. IT LOOKS LIKE A DRY DAY...BUT THE DEVELOPING EASTERLY FLOW WILL PROBABLY INDUCE ADVECT LOW LEVEL MOISTURE AND SOME STRATOCUMULUS FIELDS INTO THE AREA...ESPECIALLY BY LATER IN THE DAY. THE EVOLUTION AND MOVEMENT OF A CLOSED UPPER LEVEL LOW IN THE OHIO VALLEY WILL BE THE DETERMINING FACTOR FOR AREA WHETHER SUNDAY NIGHT INTO MONDAY NIGHT. FOR NOW...WILL FAVOR A SOLUTION THAT MOVES THIS SYSTEM TOWARDS THE AREA ON SUNDAY NIGHT AND EXITS THE REGION MONDAY NIGHT. WILL INCREASE POPS SUNDAY NIGHT AND DECREASE FOR TUESDAY. A COLD FRONT WILL CROSS TUESDAY AND INTRODUCE LOWER HUMIDITY. && .AVIATION /19Z WEDNESDAY THROUGH MONDAY/... NEAR TERM: MVFR CONDITIONS FOR CAR...PQI...HUL AT THE START OF THE PERIOD. FVE IFR IN FOG/SHOWERS/ISOLD TSTMS. CONDITIONS WILL FALL AT CAR...PQI AS THE FRONT PUSHES INTO THE AREA EARLY EVENING TO IFR IN SHWRS/ISOLD TSTMS. IFR CONDITIONS WILL REMAIN UNTIL TOMORROW MORNING. VFR BGR AND BHB. THE FRONT WILL PUSH INTO THE BGR AREA LATE THIS EVENING BRINGING CIGS TO IFR...WILL REMAIN THROUGH THE OVERNIGHT INTO TOMORROW MORNING. A FOG BANK ALONG THE DOWNEAST COAST WILL SETTLE BACK INTO BHB THIS EVENING BRINGS CIGS BACK TO IFR AROUND 10 PM...WITH FOG SETTLING BACK IN AROUND MIDNIGHT. CONDITIONS ALL SITES EXCEPT BHB WILL IMPROVE TO MVFR NORTH TO SOUTH AS THE FRONT PUSHES INTO THE COASTAL WATERS. BHB WILL REMAIN UNDER THE INFLUENCE OF THE FRONTAL BOUNDARY. AS THE LOW BEGINS MOVING NORTH ALONG THE FRONTAL SYSTEM THE FRONT ALONG THE COAST WILL BEGIN TO MOVE BACK NORTH...KEEPING THE COASTAL AREAS OF MAINE IN LOW CEILINGS AND LIGHT PRECIP. SHORT TERM: THE PERIOD BEGINS WITH VFR AT ALL SITES...BUT EXPECT CONDITIONS TO BECOME MVFR TEMPO IFR IN MODERATE RAIN FOR SITES SOUTH OF HUL BY LATER IN THE NIGHT. THE RAIN CONTINUES INTO FRIDAY MORNING. BY LATER FRIDAY...EXPECT ALL SITES TO BECOME VFR. FOG IS POSSIBLE LATER FRIDAY NIGHT. WHEN THIS FOG BURNS OFF...VFR IS FORECAST FOR THE REMAINDER OF SATURDAY INTO SATURDAY NIGHT. MVFR CIGS ARE LIKELY FOR SUNDAY AT ALL SITES. THIS CONTINUES INTO MONDAY WITH A TEMPORARILY LOWER CONDITIONS IN SHOWERS. && .MARINE... NEAR TERM: THERE IS A SMALL CRAFT IN AFFECT THROUGH 11 PM. WINDS ARE FORECASTED TO SUBSIDE TO LESS THAN 25 KTS BY THEN HOWEVER SEAS WILL REMAIN ABOVE 5 FT. A SMALL CRAFT FOR SEAS MAY BE REQUIRED FROM 11 PM THROUGH AROUND 3 AM. SHORT TERM: NO SCAS ARE ANTICIPATED DURING THE PERIOD. FOG MAY BE A FACTOR LATER THURSDAY NIGHT INTO FRIDAY. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL MIDNIGHT EDT TONIGHT FOR ANZ050>052. && NEAR TERM...NORTON SHORT TERM...MCW LONG TERM...MCW AVIATION...NORTON/MCW MARINE...NORTON/MCW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CARIBOU ME 533 AM EDT WED SEP 9 2015 MEZ001>006-010-031-101200- NORTHWEST AROOSTOOK-NORTHEAST AROOSTOOK-NORTHERN SOMERSET- NORTHERN PISCATAQUIS-NORTHERN PENOBSCOT-SOUTHEAST AROOSTOOK- CENTRAL PISCATAQUIS-SOUTHERN PISCATAQUIS- 533 AM EDT WED SEP 9 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL MAINE...FAR NORTHERN MAINE...NORTH CENTRAL MAINE...NORTHERN MAINE AND WEST CENTRAL MAINE. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MEZ011-015>017-029-030-032-101200- CENTRAL PENOBSCOT-SOUTHERN PENOBSCOT-INTERIOR HANCOCK- CENTRAL WASHINGTON-COASTAL HANCOCK-COASTAL WASHINGTON- NORTHERN WASHINGTON- 533 AM EDT WED SEP 9 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR COASTAL DOWNEAST MAINE...EAST CENTRAL MAINE...EASTERN MAINE AND INTERIOR DOWNEAST MAINE. .DAY ONE...TODAY AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. LOW PRESSURE TRACKING ALONG A STALLED FRONT WILL BRING A SOAKING RAIN TO DOWNEAST AND PORTIONS OF EAST CENTRAL MAINE THURSDAY NIGHT INTO FRIDAY. RAINFALL AMOUNTS OF 1.5 TO 2.5 INCHES...WITH LOCALLY GREATER TOTALS...ARE POSSIBLE IN THIS AREA. HOWEVER...THE LOCATION OF THE HEAVIEST RAINS WILL BE DEPENDENT ON THE EVENTUAL LOCATION OF THE STALLED FRONT WHICH IS STILL UNCERTAIN. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. ANZ050>052-101200- COASTAL WATERS FROM EASTPORT, ME TO SCHOODIC POINT, ME OUT 25 NM- COASTAL WATERS FROM SCHOODIC POINT, ME TO STONINGTON, ME OUT 25 NM- INTRA COASTAL WATERS FROM SCHOODIC POINT, ME TO STONINGTON, ME- 533 AM EDT WED SEP 9 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CARIBOU ME
237 PM EDT WED SEP 9 2015
MEZ001-091915-
NORTHWEST AROOSTOOK-
237 PM EDT WED SEP 9 2015
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN AROOSTOOK COUNTY...
AT 236 PM EDT...A STRONG THUNDERSTORM WAS 19 MILES NORTH OF SAINT
PAMPHILE...MOVING NORTHEAST AT 40 MPH.
WINDS IN EXCESS OF 30 MPH...HALF INCH HAIL...AND HEAVY RAINFALL ARE
POSSIBLE WITH THIS STORM.
THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHWESTERN
NORTHWEST AROOSTOOK COUNTY.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
LAT...LON 4742 6909 4738 6905 4726 6905 4724 6902
4723 6903 4708 6962 4746 6922 4746 6918
TIME...MOT...LOC 1836Z 243DEG 39KT 4719 6959
HASTINGSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CARIBOU ME
314 PM EDT WED SEP 9 2015
MEZ001-092000-
NORTHWEST AROOSTOOK-
314 PM EDT WED SEP 9 2015
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN AROOSTOOK COUNTY...
AT 312 PM EDT...A STRONG THUNDERSTORM WAS 14 MILES NORTHWEST OF
DICKEY...OR 16 MILES NORTHWEST OF ALLAGASH...MOVING EAST AT 40 MPH.
WINDS IN EXCESS OF 40 MPH...HEAVY RAINFALL...AND DIME SIZE HAIL ARE
POSSIBLE WITH THIS STORM.
THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHWESTERN
NORTHWEST AROOSTOOK COUNTY.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
LAT...LON 4745 6914 4743 6911 4743 6904 4741 6903
4738 6905 4725 6904 4720 6892 4720 6885
4703 6966 4746 6922
TIME...MOT...LOC 1912Z 254DEG 39KT 4721 6935
HASTINGSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CARIBOU ME
355 PM EDT WED SEP 9 2015
MEZ001-002-092045-
NORTHEAST AROOSTOOK-NORTHWEST AROOSTOOK-
355 PM EDT WED SEP 9 2015
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL AROOSTOOK
COUNTY...
AT 354 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM 10 MILES NORTHEAST OF ALLAGASH TO NEAR ALLAGASH
TOWNSHIP TO 17 MILES EAST OF SAINT PAMPHILE...AND MOVING EAST AT 40
MPH.
WINDS IN EXCESS OF 40 MPH...HEAVY RAINFALL...AND PEA SIZE HAIL ARE
POSSIBLE WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
FORT KENT...MADAWASKA...VAN BUREN...EAGLE LAKE...ALLAGASH...DEBOULLIE
MOUNTAIN...FRENCHVILLE...NEW CANADA...LILLE...ALLAGASH TOWNSHIP...
FISH RIVER LAKE...DICKEY...CROSS LAKE...MADAWASKA LAKE...
WALLAGRASS...GRAND ISLE...WINTERVILLE...SINCLAIR...SAINT JOHN AND
GUERETTE.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
LAT...LON 4736 6823 4733 6816 4729 6812 4724 6803
4675 6869 4679 6951 4702 6922 4724 6902
4718 6888 4724 6872 4724 6861 4729 6858
4730 6847 4728 6846 4729 6838 4734 6838
4736 6835
TIME...MOT...LOC 1954Z 268DEG 33KT 4720 6890 4703 6913 4685 6936
HASTINGSThe Caribou radar (KCBW), 148 km away, was scanning. The volume nearest the first event began at 20:08 UTC.
5 thunderstorm wind. Local standard time, as filed.
A tree was toppled on Route 161 by wind gusts estimated at 60 mph. The time is estimated.
Trees were toppled at the University of Maine Fort Kent campus by wind gusts estimated at 60 mph. The time is estimated.
A tree was toppled on Main Street by wind gusts estimated at 60 mph. The time is estimated.
A tree was toppled in Cyr Cove by wind gusts estimated at 60 mph. The time is estimated.
Trees were toppled on to power lines along Washburn Road by wind gusts estimated at 60 mph. The time is estimated.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maine in 2015Every state in 2015This day in weather historyWarnings in Maine, September 2015
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: 602206, 602207, 602208, 602209, 602210.