A slow moving cold front caused 2 to 4 inches of rain over a 2-day period resulting in minor flooding on the Kennebec River at Skowhegan.
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The episode as NWS GYX wrote it up.
A slow moving cold front caused 2 to 4 inches of rain over a 2-day period resulting in minor flooding on the Kennebec River at Skowhegan.
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 Sep 6, 11:31 AM EST, 2 hours 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 1231 PM EDT TUE SEP 6 2011 .SYNOPSIS... A SLOW MOVING COLD FRONT WILL STALL TO OUR SOUTH AND EAST THIS AFTERNOON. HIGH PRESSURE AND DRIER AIR WILL TRY TO BUILD IN FROM THE NORTH TONIGHT. THE STALLED FRONT WILL DRIFT BACK NORTH AND PROVIDE CLOUDS AND UNSETTLED WEATHER WEDNESDAY AND THURSDAY. KATIA WILL PROVIDE LARGE SWELLS TO OUR COASTAL WATERS AS IT TRACKS WELL OFFSHORE TO OUR SOUTH AND EAST ON FRIDAY. HIGH PRESSURE WILL BUILD OVER THE WATERS FOR FRIDAY AND SATURDAY...BEFORE ANOTHER FRONT APPROACHES THE AREA EARLY NEXT WEEK. && .NEAR TERM /UNTIL 7 PM THIS EVENING/... 1230 PM...I MADE MINOR ADJUSTMENTS TO 1ST PERIOD CLOUD COVER, POPS, AND TEMPS. SEEING SOME BUILDUPS AND LIGHT ECHOES DEVELOPING ACROSS THE AREA AND WILL KEEP SLIGHT CHC POPS FOR EVEN MANY NORTHERN SECTIONS INTO THE MID AFTERNOON HOURS. 950 AM...MINOR ADJUSTMENTS TO 1ST PERIOD GRIDS BASED ON RADAR TREND AND MESONET. 7 AM...FORECAST GENERALLY IN GOOD SHAPE. LOOKS LIKE SFC WAVE ON FRONT OVER LI...WITH ANOTHER ROUND OF LIGHT RAIN THROUGH ABOUT MID-MORNING...WITH BACK EDGE OF PRECIP TO THE NW AROUND KBTV. MIGHT SEE SOME SHRA LINGER ON THE COAST THROUGH MIDDAY TO EARLY AFTERNOON. OTHERWISE...JUST SOME TWEAKS TO REFLECT CURRENT OBS. PREVIOUSLY...SFC COLD FRONT HAS CLEARED THE CWA...AND WINDS HAVE GENERALLY SHIFTED TO THE N WITH TEMPS AND TDS FALLING. WILL STILL HAVE TO DEAL WITH SEVERAL MORE HOURS OF RAIN OR RAIN SHOWERS AS THE FRONT MOVES SLOWLY OFFSHORE...AND WEAK WARM CONVEYOR BELT DRIVEN AHEAD OF WAVE MOVING ALONG FRONT TO OUR SW...THROWING MOISTURE OVER TOP OF THE FRONT INTO THE COOL AIR. ACTUALLY NORTHERLY DOWNSLOPE IS TENDING TO BREAK UP THE STEADY RAIN INTO SHOWERS IN THOSE FAVORED AREAS. GIVEN THAT ANY RAIN LEFT FROM THIS SYSTEM WILL GENERALLY BE LIGHT...HAVE CANCELLED THE FFA. ONCE THE WAVE MOVES TO OUR NE LATER THIS MORNING...WILL SEE AN END TO THE RAIN...AND COULD SEE SOME CLEARING...ESPECIALLY IN THE N THIS AFTERNOON. HOWEVER...FRONT WILL STALL JUST TO OUR S...SO COULD STILL SEE A LOT OF CLOUDS IN THE S THIS AFTERNOON. MAXES WERE A BIAS CORRECTED MAV/MET BLEND WITH HIGHS MID 60S N TO LOW 70S S...WHICH EVEN WITHOUT MUCH SUN...SHOULD WARM THANKS TO THE DOWNSLOPE. && .SHORT TERM /7 PM THIS EVENING THROUGH WEDNESDAY NIGHT/... SOME VERY WEAK SFC HIGH PRES WILL ATTEMPT TO BUILD IN FROM THE N TONIGHT. WILL ALLOW FOR MORE CLEARING IN THE N...WHERE TEMPS WILL COOL QUICKLY IN THE EVENING. THE S ZONES WILL REMAIN MAINLY CLOUDY...BUT SHOULD STAY DRY THROUGH MOST OF THE EVENING...BEFORE THAT STALLED FRONT BEGINS TO LIFT N AS IT IS ACTED UPON BY BOTH THE REMNANTS OF LEE OVER THE CENTRAL APPALACHIANS...AND BUILDING A BUILDING RIDGE OVER THE ATLANTIC SUPPORTED BY SUBSIDENCE TO THE N OF KATIA. EXPECT SHRA TO MOVE INTO SRN NH BY DAYBREAK WED...WITH CLOUDS SPREADING BACK TO THE N LATE TONIGHT INTO WED MORNING. THE RIDGING TO THE EAST MAY KEEP THE ERN ZONES DRIER AS THE FRONT LIFTS N ON WED...WITH THE BETTER CHC FOR SHRA IN THE WRN ZONES. HOWEVER...WITH CLOUDS AND WEAK ONSHORE FLOW DEVELOPING...IT WILL BE COOL WITH HIGHS MAINLY IN THE LOW TO MID 60S. && .LONG TERM /THURSDAY THROUGH MONDAY/... WED NGT ANY PROGRESS THE BOUNDARY MADE THRU THE AREA WILL BE GIVEN RIGHT BACK AS IT RETURNS NWD AS A WARM FRONT. RIDGING AHD OF HURRICANE KATIA WILL ENSURE THAT THE FRONT WILL NOT CLEAR THE COAST. INSTEAD THE BOUNDARY SHOULD STALL OVER THE CWFA AND PROVIDE A FOCUS FOR PCPN. THE REMNANTS OF T.S. LEE OVER THE OHIO VLY WILL KEEP SW FLOW OVER THE AREA...AND WITH TROPICAL ORIGINS HEAVY RAFL WILL BE A POSSIBILITY INTO THU. SLOWLY HIGH PRESSURE WILL BUILD IN FROM THE N AND KATIA WILL SLINGSHOT OUT TO SEA...DRYING THE CWFA OUT FROM N TO S. HIGH PRESSURE LOOKS TO REMAIN IN CONTROL UNTIL EARLY NEXT WEEK...WHEN RETURN FLOW AHD OF AN APPROACHING FRONT WILL INCREASE MOISTURE AND SHRA/TSTM CHCS. && .AVIATION /18Z TUESDAY THROUGH SUNDAY/... SHORT TERM...GENERALLY SEEING MVFR TO VFR ATTM...AND THIS SHOULD CONTINUE INTO THIS MORNING. COULD SEE A BRIEF PERIOD OF IFR FOR A FEW HOURS AROUND SUNRISE...WITH ALL TERMINALS IMPROVING TO VFR NY MIDDAY. VFR CONTINUES TONIGHT...WITH ONLY EXCEPTION BEING KPSM...WHICH COULD SEE MVFR IN SHRA BEFORE DAY BREAK WED. LONG TERM...MVFR OR LOWER CONDITIONS POSSIBLE IN SHRA WED NGT INTO THU. GRADUALLY IMPROVEMENT TO VFR CONDITIONS EXPECTED BY FRI. && .MARINE... SHORT TERM...SCA HAS BEEN CANCELLED AS WINDS SEAS HAVE FALLEN BLO CRITERIA. WINDS SHOULD STAY BLO SCA LVLS THROUGH WED...BUT SEAS WILL INCREASE ONCE AGAIN TONIGHT AND WED IN THE OPEN WATERS...THANKS TO SWELL ASSOCIATED WITH KATIA. LONG TERM...SCA CONDITIONS FOR MAINLY HAZARDOUS SEAS APPEAR LIKELY THRU MUCH OF THE WEEK AS KATIA MAKES ITS CLOSEST APPROACH TO NEW ENGLAND. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && ES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 310 AM EDT TUE SEP 6 2011 ANZ151-153-MEZ007>009-012>014-018>028-NHZ001>010-013-014-070715- PENOBSCOT BAY-CASCO BAY-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- 310 AM EDT TUE SEP 6 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CASCO BAY...WESTERN MAINE...CENTRAL NEW HAMPSHIRE...NORTHERN NEW HAMPSHIRE...SOUTHEASTERN NEW HAMPSHIRE AND PENOBSCOT BAY. .DAY ONE...TODAY 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. ANZ150-152-154-070715- STONINGTON ME TO PORT CLYDE ME OUT TO 25 NM- PORT CLYDE ME TO CAPE ELIZABETH ME OUT TO 25 NM- CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT TO 25 NM- 310 AM EDT TUE SEP 6 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR 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...TODAY 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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
1057 AM EDT TUE SEP 06 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 PM TSTM WND DMG BOW 43.13N 71.55W
09/05/2011 MERRIMACK NH EMERGENCY MNGR
SIX RVS DESTROYED AND SIX DAMAGED. WIND GUST ESTIMATED
AT 60 MPH
&&
EVENT NUMBER GYX1100460
MPKThe national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
A slow moving cold front caused 2 to 4 inches of rain over a 2 day period resulting in minor flooding on the Kennebec River at Skowhegan. The River crested at 36,366 cfs. Flood flow is 35,000 cfs.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maine in 2011Every state in 2011This day in weather historyWarnings in Maine, September 2011
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: 348433.