A few severe thunderstorms resulted in mainly wind damage in western Maine during the afternoon of August 11th.
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 few severe thunderstorms resulted in mainly wind damage in western Maine during the afternoon of August 11th.
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 11, 1:52 PM EST, 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 252 PM EDT TUE AUG 11 2009 .SYNOPSIS... A LARGE AND WEAK AREA OF LOW PRESSURE WILL MOVE SLOWLY ACROSS NEW ENGLAND THIS EVENING AND OFF THE COAST LATER TONIGHT. WARM HUMID AND UNSETTLED WEATHER CAN BE EXPECTED WEDNESDAY AND THURSDAY AS A SERIES OF WEAK DISTURBANCES CROSS THE AREA. HIGH PRESSURE AND SLIGHTLY LESS HUMID AIR FOLLOWS FOR FRIDAY INTO THE UPCOMING WEEKEND. A BACK DOOR COLD FRONT OVER QUEBEC WILL BRIEFLY DROP SOUTH AND WEST INTO NORTHERN NEW ENGLAND SATURDAY AND SUNDAY. && .NEAR TERM /THROUGH TONIGHT/... A BOUNDARY MOVING SOUTH FROM SRN CANADA WILL DRAPE ITSELF ACROSS CENTRAL NEW ENGLAND BY THIS EVENING. VIS SAT IMAGERY DEMARKS THIS BNDRY WELL. 88D SHOWS TSTMS ALG THIS BNDRY AS SOME SFC HTG OCCURRING ALLOWING CAPES TO APPROACH 1500 J/KG LEVELS...ALSO OF NOTE IS A 30+KT MID LEVEL JET MOVING ACROSS THE REGION. SO...WILL CONTINUE ENHANCED WORDING FOR SOME STG CONVECTION ACROSS INTERIOR AND MTN AREAS AS THIS BNDRY DROPS SWD. TONIGHT A POSITIVE TILTED UPPR TROF SLOWLY MOVES EWD AND WITH A TROPICAL AMS IN PLACE MORE SHWRS XPCTD OVERNIGHT. WILL STAY WITH FAIRLY HIGH POPS OVER CENTRAL AND NRN AREAS WITH CHC POPS ELSEWHERE. THE USUAL BLEND OF MAV/MET TEMPS WERE USED. GFS POPS APPEARED BEST. && .SHORT TERM /WEDNESDAY/... THE UPPER TROF CONTINUE TO MOVE ACROSS THE AREA WEDNESDAY SO SHWRS ARE ONCE AGAIN EXPECTED. GFS POPS LOOKED REASONABLE. MAV TEMPS LOOKED GOOD. && .LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/... SHOWERS AND WIDESPREAD FOG ARE LIKELY WEDNESDAY NIGHT INTO THURSDAY MORNING AS A WEAK UPPER LEVEL DISTURBANCE AND SURFACE TROUGH MOVE THROUGH THE AREA. SOME THUNDER WILL AGAIN BE POSSIBLE THURSDAY AFTERNOON MAINLY IN THE MOUNTAINS AS THE SYSTEM MOVES EAST OF THE AREA. HIGH PRESSURE WILL BUILD OVER THE REGION FRIDAY THROUGH SUNDAY WITH FULL SUNSHINE...WESTERLY SURFACE WINDS...AND LOWER DEW POINTS HELPING HIGH TEMPERATURES TO REACH THE UPPER 80S IN SOUTHERN NEW HAMPSHIRE AND MAINE. RAIN CHANCES CREEP BACK INTO THE FORECAST EARLY NEXT WEEK AS EMBEDDED IMPULSES TRAVEL ALONG THE NORTHERN PERIPHERY OF THE UPPER LEVEL RIDGE. INCREASING MOISTURE WILL LIMIT TEMPERATURES TO THE UPPER 70S/LOWER 80S...CLOSER TO NORMAL FOR THIS TIME OF YEAR. && .AVIATION /18Z TUESDAY THROUGH SUNDAY/... SHORT TERM /THROUGH WEDNESDAY/...SOME VFR CONDS WILL LWR TO MVFR CONDS TNGT AND WED. FROM NOW UNTIL 00Z SOME STG TSTMS MAY LWR CONDS BRFLY TO IFR ALG WITH SOME GSTY WINDS. LONG TERM /WEDNESDAY THROUGH SATURDAY/...MVFR CONDITIONS POSSIBLE IN TSRA AND BR WED AND THU. && .MARINE... SHORT TERM /THROUGH TONIGHT/...NO FLAGS AS LIGHT GRAD WINDS CONTINUE. LONG TERM /WEDNESDAY THROUGH SATURDAY/...SEAS AND WINDS WILL REMAIN BELOW SCA CRITERIA. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && MARINE/HANES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 228 PM EDT TUE AUG 11 2009 MEZ007>009-012>014-018>028-NHZ001>010-013-014-121830- 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- 228 PM EDT TUE AUG 11 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW HAMPSHIRE...NORTHERN NEW HAMPSHIRE AND SOUTHEASTERN NEW HAMPSHIRE. .DAY ONE...THIS AFTERNOON AND 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>154-121830- 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- 228 PM EDT TUE AUG 11 2009 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...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 116 PM EDT TUE AUG 11 2009 MEZ007>009-012>014-NHZ002>004-111815- CENTRAL SOMERSET-NORTHERN CARROLL-NORTHERN FRANKLIN-NORTHERN GRAFTON-NORTHERN OXFORD-SOUTHERN COOS-SOUTHERN FRANKLIN-SOUTHERN OXFORD-SOUTHERN SOMERSET- 116 PM EDT TUE AUG 11 2009 ...STRONG THUNDERSTORMS WILL IMPACT OXFORD COUNTY...SOMERSET COUNTY...FRANKLIN COUNTY...GRAFTON COUNTY...CARROLL COUNTY AND COOS COUNTY THROUGH 215 PM EDT... AT 115 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 9 MILES NORTHWEST OF MAYFIELD TO 7 MILES NORTHWEST OF LISBON...OR ALONG A LINE EXTENDING FROM 20 MILES SOUTHWEST OF GREENVILLE TO 9 MILES NORTH OF WOODSVILLE...MOVING SOUTHEAST AT 20 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND MOLLIDGEWOCK STATE PARK...REDINGTON...MIDDLE DAM...CARRABASSETT VALLEY...STARK... NORTHUMBERLAND...LANCASTER...DUMMER...DALTON AND UPTON THROUGH 215 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. MARINE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 205 PM EDT TUE AUG 11 2009 MEZ007>009-012>014-020-021-111900- ANDROSCOGGIN-CENTRAL SOMERSET-KENNEBEC-NORTHERN FRANKLIN-NORTHERN OXFORD-SOUTHERN FRANKLIN-SOUTHERN OXFORD-SOUTHERN SOMERSET- 205 PM EDT TUE AUG 11 2009 ...STRONG THUNDERSTORMS WILL IMPACT ANDROSCOGGIN COUNTY...KENNEBEC COUNTY...OXFORD COUNTY...SOMERSET COUNTY AND FRANKLIN COUNTY THROUGH 300 PM EDT... AT 204 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 3 MILES SOUTHEAST OF BRIGHTON TO 7 MILES WEST OF NEWRY...OR ALONG A LINE EXTENDING FROM 17 MILES SOUTHWEST OF GUILFORD TO 9 MILES NORTHWEST OF BETHEL...MOVING SOUTHEAST AT 15 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND MOUNT BLUE STATE PARK...WELD...STRONG...SOLON...ROXBURY...PHILLIPS...NEW PORTLAND... BRIGHTON...AVON AND ANDOVER THROUGH 300 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. MARINE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 206 PM EDT TUE AUG 11 2009 MEZ012-018-019-NHZ002>006-009-111900- BELKNAP-INTERIOR CUMBERLAND-INTERIOR YORK-NORTHERN CARROLL-NORTHERN GRAFTON-SOUTHERN CARROLL-SOUTHERN COOS-SOUTHERN GRAFTON-SOUTHERN OXFORD- 206 PM EDT TUE AUG 11 2009 ...STRONG THUNDERSTORMS WILL IMPACT BELKNAP COUNTY...OXFORD COUNTY... YORK COUNTY...CUMBERLAND COUNTY...GRAFTON COUNTY...CARROLL COUNTY AND COOS COUNTY THROUGH 300 PM EDT... AT 206 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM JACKSON TO PIERMONT...OR ALONG A LINE EXTENDING FROM 12 MILES NORTH OF CONWAY TO 13 MILES SOUTH OF WOODSVILLE...MOVING SOUTHEAST AT 25 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND LOST RIVER...CRAWFORD NOTCH STATE PARK...JACKSON... HAVERHILL...CRAWFORD NOTCH...PIERMONT...NORTH WOODSTOCK...LAKE TARLETON STATE PARK...GLEN AND LINCOLN THROUGH 300 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. MARINE
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
215 PM EDT TUE AUG 11 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0210 PM HAIL 4 NNW NORTH CONWAY 44.11N 71.17W
08/11/2009 M0.50 INCH CARROLL NH TRAINED SPOTTER
TRAINED SPOTTER REPORTED HALF INCH HAIL IN GLEN.
&&
DAGSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 254 PM EDT TUE AUG 11 2009 MEZ012>014-019>021-NHZ004-112000- ANDROSCOGGIN-INTERIOR CUMBERLAND-KENNEBEC-NORTHERN CARROLL-SOUTHERN FRANKLIN-SOUTHERN OXFORD-SOUTHERN SOMERSET- 254 PM EDT TUE AUG 11 2009 ...STRONG THUNDERSTORMS WILL IMPACT ANDROSCOGGIN COUNTY...KENNEBEC COUNTY...OXFORD COUNTY...SOMERSET COUNTY...FRANKLIN COUNTY... CUMBERLAND COUNTY AND CARROLL COUNTY THROUGH 400 PM EDT... AT 253 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM NEW SHARON TO LOVELL...OR ALONG A LINE EXTENDING FROM 6 MILES EAST OF FARMINGTON TO 10 MILES NORTH OF FRYEBURG...MOVING SOUTHEAST AT 15 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND STARKS...EAST WILTON...WILTON...STOWE...STONEHAM...PERU... GREENWOOD...FARMINGTON...BRYANT POND AND CHATHAM THROUGH 400 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. BOATERS ON ANY LAKES SHOULD SEEK SAFE HARBOR IMMEDIATELY UNTIL THREATENING WEATHER PASSES. MARINE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 304 PM EDT TUE AUG 11 2009 NHZ005-006-009-111945- BELKNAP-SOUTHERN CARROLL-SOUTHERN GRAFTON- 304 PM EDT TUE AUG 11 2009 ...STRONG THUNDERSTORMS WILL IMPACT BELKNAP COUNTY...GRAFTON COUNTY AND CARROLL COUNTY THROUGH 345 PM EDT... AT 303 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 7 MILES SOUTH OF CONWAY TO 3 MILES SOUTH OF PLYMOUTH...MOVING SOUTHEAST AT 20 MPH. THESE THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND WHITE LAKE STATE PARK...NORTH SANDWICH...TAMWORTH...PLYMOUTH...MADISON... HEBRON...GROTON...SANDWICH...HOLDERNESS AND WEST OSSIPEE 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. MC
The Portland,ME radar (KGYX), 44 km away, was scanning. The volume nearest the first event began at 19:05 UTC.
2 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm downed trees onto power lines in Denmark.
A severe thunderstorm downed large trees and branches in Saco damaging a shed. At least one road was closed due to downed trees.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maine in 2009Every state in 2009This day in weather historyWarnings in Maine, August 2009
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: 194454, 194457.