Low pressure developed along the coast of South Carolina and moved north into New England. Rainfall of 2 to 4 inches caused minor flooding along the Kennebec River.
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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.
Low pressure developed along the coast of South Carolina and moved north into New England. Rainfall of 2 to 4 inches caused minor flooding along the Kennebec River.
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 Apr 23, 9:59 PM EST, 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 1059 PM EDT MON APR 23 2012 .SYNOPSIS... LOW PRESSURE WILL TRACK TO THE NORTHWEST THROUGH NEW YORK STATE AS A TROUGH OF LOW PRESSURE SWINGS THROUGH THE REGION TONIGHT. ANOTHER TROUGH OF LOW PRESSURE WILL PASS THROUGH THE AREA TUESDAY NIGHT. A COLD FRONT WILL CROSS THE REGION ON WEDNESDAY. A RIDGE OF HIGH PRESSURE FOLLOWS FOR WEDNESDAY NIGHT INTO THURSDAY. LOW PRESSURE WILL ARRIVE FROM THE GREAT LAKES FOR LATE THURSDAY INTO FRIDAY. A RIDGE OF HIGH PRESSURE WILL NOSE INTO THE REGION SATURDAY INTO SUNDAY. && .NEAR TERM /THROUGH TUESDAY/... UPDATE... NEXT BATCH OF SHOWER ACTIVITY NOVE APPROACHING THE SOUTHERN NEW ENGLAND COASTLINE AND HEADING QUICKLY TO THE NORTH. THIS MAY PUSH A FEW LOCATIONS IN THE PORTLAND AREA TO OVER 5 INCHES FOR A STORM TOTAL OVER THE NEXT FEW HOURS. HAVE ADJUSTED POPS UPWARDS. CONVECTION NOW FIRING WELL OFFHSORE AS THE PCPN DEVELOPS. HAVE ADJUSTED MIN TEMPS AND DEW POINTS UPWARDS TO ACCOUNT FOR CURRENT CONDITIONS. ALSO...HAVE ALLOWED FOR AREAS OF FOG ACROSS THE REGION OVERNIGHT WITH SO MUCH LOW LEVEL MOISTURE IN PLACE. HAVE UPDATED POPS TO ALLOW FOR NEXT SLUG OF RAIN TO MOVE THROUGH THE REGION OVER THE NEXT HOUR OR TWO. SHOULD BE ANOTHER QUICK HALF INCH OF RAIN...WHICH WILL PUT MANY AREAS OVER THE 4 INCH MARK. MANY SMALL RIVERS AND STREAMS RUNNING HIGH AT THIS TIME. WILL CONTINUE TO MONITOR. PREV DISC... UPR LVL CUTOFF TO OUR SW SLOWLY LIFTS NWD AS A JET STREAK ROTATES AROUND IT AND BRINGS THE STEADIER PRCP OFF TO THE N AND E WITH IT. STILL SOME PRCP BEHIND THIS SYSTEM THOUGH NOT NEARLY AS HEAVY OR ORGANIZED. WILL CONT THE FLOOD WATCH THRU 6 PM. THE HEAVIEST RAIN IS OVER WITH THOUGH SOME SHOWERS WILL STILL OCCUR THRU THE EVENING HOURS WITH 0.10 TO 0.25 INCH QPF PSBL...AND MAYBE SOME LOCALLY HIGHER AMOUNTS. LOTS OF MOISTURE AROUND AND DEW POINTS HIGH SO EXPECT AREAS OF DENSE F TO FORM OVERNIGHT. SHOULD BE FAIRLY MILD OVERNIGHT EVEN THOUGH AS A TROUGH OF LOW PRES PASSES THRU AND COOLER AND SOMEWHAT DRIER AIR TRIES TO FILTER IN FROM THE SW. GENERALLY USED GFS40, BLEND OF MAV/MET MOS AND RFC QPF THOUGH DID INCREASE QPF SOME FOR THIS EVENING. && .SHORT TERM /TUESDAY NIGHT/... FLOW IS MOSTLY S OR SW SO IT WILL TAKE AWHILE TO SCOUR OUT ANY LOW CLOUDS AND F...BUT SHOULD END UP GIVING US AT LEAST SOME PARTIAL SUNSHINE. WITH COOLER AIR MOVING IN ALOFT AS IT ROTATES AROUND THE UPR LVL CUTOFF LOW IT WILL PRODUCE SOME INSTABILITY CLOUDS AND -SHRA...THOUGH MOST ACTIVITY WILL LIKELY BE LIMITED TO THE N/MT/FOOTHILL ZONES. GENERALLY USED GFS40, BLEND OF MAV/MET MOS AND RFC QPF FOR THE SHORT TERM FCST. && .LONG TERM /WEDNESDAY THROUGH MONDAY/... MODELS DIFFERENCES EMERGE EARLY IN THE PERIOD...HOWEVER GFS AND CMC GEM/ECMWF HAVE COME INTO BETTER AGREEMENT WITH LATEST 12Z RUN. IN SHORT...LINGERING UPPER TROUGH ACROSS THE NORTHEAST WILL RESULT IN BELOW NORMAL TEMPERATURES FOR MUCH OF THE PERIOD. IN THE DAILIES...A COLD FRONT AND UPPER TROUGH WILL CROSS THE AREA WEDNESDAY WITH CLOUDS AND SCATTERED SHOWERS. A WEAK RIDGE AND DRIER AIR WILL FOLLOW FOR WEDNESDAY NIGHT INTO THURSDAY...WITH NEXT SHORTWAVE AND DISTURBANCE FROM THE GREAT LAKES ARRIVING LATE THURSDAY. THE NEXT SYSTEM WILL CROSS THE AREA THURSDAY NIGHT INTO FRIDAY WITH MODELS HINTING AT POTENTIAL FOR SOME WET SNOW...MAINLY ACROSS THE HIGHER TERRAIN ON THE BACKSIDE OF THE SYSTEM...GIVEN FORECAST SOUNDING PROFILES. THE SYSTEM MOVES OFF INTO THE MARITIMES ON FRIDAY AND THEN STALLS...BUT FAR ENOUGH NORTH AND EAST TO ALLOW A SURFACE RIDGE TO NOSE SOUTHEAST INTO THE FORECAST AREA FOR MUCH OF THE UPCOMING WEEKEND. && .AVIATION /03Z TUESDAY THROUGH SATURDAY/... SHORT TERM /THROUGH TUESDAY NIGHT/...MOSTLY IFR/LIFR EXCEPT DOWNSLOPE SE WINDS BRINGING VFR TO HIE. CONDITIONS SHOULD BE MOSTLY LIFR TNGT DUE TO ONSHORE FLOW, STRATUS AND F. HIE HAS THE BEST CHC OF SEEING LESS ST AND F...THOUGH EVEN THERE EXPECT CONDITIONS TO LOWER OVERNIGHT. S SW FLOW WILL SLOW DOWN IMPROVING WX ON TUESDAY...BUT SHOULD GRADUALLY LIFT TO MVFR OR MAYBE VFR AND CONT THRU TUESDAY NGT. LONG TERM... WED...SCT MVFR POSSIBLE IN RAIN SHOWERS. THU PM - FRI AM...MVFR IN RA...WITH AREAS OF IFR IN DRIZZLE AND FOG. && .MARINE... SHORT TERM /TONIGHT THROUGH TUESDAY NIGHT/...WILL CONT THE GLW FOR OUR ERN 2 COASTAL ZONES WHERE THE SE LOW LVL JET CONTINUES TO PRODUCE GALE FORCE GUSTS. THIS SHOULD EXIT TO THE NE OVER THE NEXT FEW HOURS AS GUSTS DROP BELOW THE 34 KT THRESHOLD. THE GLW IS FOLLOWED BY AN SCA AFTER 6 PM THIS EVENING AND GOES THRU TUESDAY EVENING DUE TO SCA SEAS, WHICH WILL BE VERY SLOW TO SUBSIDE DUE TO PERSISTENT ONSHORE FLOW, AND PERIODS OF SCA WINDS. WILL LOWER THE GLW TO AN SCA REST OF THE WATERS AS WINDS HAVE ALREADY DROPPED BELOW GALE FORCE...BUT CONT TO GUST TO SCA LEVELS ALONG WITH ROUGH SEAS OVER 5 FT. THIS SCA WILL ALSO GO THRU TUESDAY NGT FOR THE SAME REASONS. LONG TERM... WED PM - THU AM...SMALL CRAFT WINDS AND SEAS ARE POSSIBLE. THU PM - SAT AM...SMALL CRAFT WINDS AND SEAS ARE LIKELY...WITH GUSTS TO GALE POSSIBLE OUTSIDE THE BAYS. && .FIRE WEATHER... VERY HEAVY RAIN EVENT HAS GREATLY LOWERED THE FIRE DANGER AND WILL HELP TREMENDOUSLY IN GREEN UP OVER THE NEXT FEW DAYS. UNSETTLED WX THRU THURSDAY WILL PROVIDE FOR FAIRLY HIGH RH VALUES AND THE THREAT OF SOME SHOWERS. WINDS WILL BE FAIRLY LGT UNTIL THURSDAY WHEN THEY INCREASE FROM THE S OR SW. && .HYDROLOGY... FLOOD WATCH HAS BEEN ALLOWED TO EXPIRE. WATCHING N CONWAY CLOSELY AS THEY CREST JUST BELOW THE 9 FOOT FLOOD STAGE. ALREADY PROBLEMS AT SOME OF THE CAMPGROUNDS WHERE THE SACO RIVER HAS CHANGED ITS PATH SINCE IRENE. SKOWHEGAN HAS OPENED UP ITS GATES TO LOWER THEIR STORAGE. FLOW NOW RUNNING CLOSE TO 34 KCFS. DAM OPERATORS PLAN TO KEEP IT AT THIS FLOW THROUGH TOMORROW MORNING. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 8 AM EDT WEDNESDAY FOR ANZ150>154. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 626 PM EDT MON APR 23 2012 MEZ007>009-012>014-018>028-NHZ001>010-013-014-242230- 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- 626 PM EDT MON APR 23 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW HAMPSHIRE...NORTHERN NEW HAMPSHIRE AND SOUTHEASTERN NEW HAMPSHIRE. .DAY ONE...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 IS NOT EXPECTED AT THIS TIME. ANZ150>154-242230- 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- 626 PM EDT MON APR 23 2012 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...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
2 flood. Local standard time, as filed.
Heavy rain caused minor flooding along the Kennebec River at Skowhegan (flood stage 35,000 cfs), which crested at 40900 cfs.
Heavy rain caused minor flooding along the Kennebec River at Augusta (flood stage 12.0 ft), which crested at 12.86 ft.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maine in 2012Every state in 2012This day in weather historyWarnings in Maine, April 2012
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: 378725, 378726.