Slow moving thunderstorms produced up to 3 inches of rain in 2 hours causing flash flooding in Bow and Hooksett New Hampshire. 00.
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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.
Slow moving thunderstorms produced up to 3 inches of rain in 2 hours causing flash flooding in Bow and Hooksett New Hampshire. Total damages reached $100,000.00.
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 29, 1:57 PM EST, 4 hours 33 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 257 PM EDT MON JUN 29 2009 .SYNOPSIS... A BROAD AREA OF LOW PRESSURE WILL REMAIN NEARLY STATIONARY OVER THE GREAT LAKES REGION THROUGH TUESDAY. THE LOW PRESSURE WILL THEN MOVE NORTH AND EAST WEDNESDAY THROUGH THURSDAY WITH A TRAILING COLD FRONT CROSSING THE AREA ON FRIDAY. A TROUGH OF LOW PRESSURE WILL LINGER OVER THE REGION THROUGH THE WEEKEND. && .NEAR TERM /THROUGH TONIGHT/... SHOWERS WILL DIMINISH THROUGHOUT THE EVENING AS THE TROUGH SHIFTS TO THE NORTH. WITH ONSHORE FLOW EXPECT LIGHT DRIZZLE TO CONTINUE INTO TONIGHT WHILE TEMPERATURES WILL BE SIMILAR TO LAST NIGHT. && .SHORT TERM /TUESDAY/... OCCASIONAL BREAKS THROUGH THE CONNECTICUT VALLEY AND INTO CENTRAL NEW HAMPSHIRE WILL BRING WARMER TEMPERATURES. AREAS THAT ARE ABLE TO BURN OFF THE LOW CLOUDS WILL ALSO SEE THOSE WARMER TEMPERATURES HOWEVER THE MODELS ARE SHOWING SOME DIFFERENCES IN HOW MUCH OF THE AREA WILL ACTUALLY SEE THE SUNSHINE. THOSE AREAS THAT ARE ABLE TO BREAK OUT WILL SEE TEMPERATURES WARM UP INTO THE MID TO UPPER 70S. EXPECT SHOWERS AND THUNDERSTORMS TO DEVELOP IN WESTERN NEW HAMPSHIRE AND PROGRESS EASTWARD. AS THOSE STORMS MOVE CLOSER TO THE COAST EXPECT THEM TO DIMINISH AS THEY GET KNOCKED DOWN BY THE MARINE LAYER. && .LONG TERM /TUESDAY NIGHT THROUGH MONDAY/... THE UNSETTLED WET WX PATTERN CONTINUES THRU MUCH OF THE LONG TERM PERIOD AS THE H5 CUTOFF REMAINS TO OUR W WITH WEAK ONSHORE FLOW AT THE SFC WITH THE SFC LOW WELL TO OUR W AND A WRM FNT TO OUR S. THE H5 CUTOFF LOW BEGINS TO OPEN AND SHEAR OUT OVER THE WEEKEND ONLY TO HAVE ANOTHER UPR LVL SYSTEM READY TO DROP IN FROM CANADA INTO THE MEAN TROF POSITION ALONG THE E COAST EARLY NEXT WEEK. GENERALLY USED THE GFS40 AND GMOS GUIDANCE FOR THE LONG TERM WITH MAV/MET MOS BLEND USED FOR TUESDAY NGT THRU WEDNESDAY NGT. DID GO ABOVE GFS40 POP FOR TUESDAY NGT THRU WEDNESDAY NGT OVER ERN AREAS TO AT LEAST MENTION A SLGT CHC OR CHC OF LGT PRPC. ALSO INCLUDED PATCHY F DURING THIS PERIOD. && .AVIATION /18Z MONDAY THROUGH SATURDAY/... SHORT TERM...MVFR/IFR CEILINGS TONIGHT IMPROVING OVER WESTERN NEW HAMPSHIRE ON TUESDAY. LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...CONTINUED WET UNSETTLED WX PATTERN WILL MEAN PERIODS OF MVFR TO IFR WITH LOCAL AREAS OF LIFR CONDITIONS LIKELY THRU MUCH OF THE LONG TERM PERIOD. && .MARINE... SHORT TERM...NO FLAGS. LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...WINDS AND SEAS WILL STAY BLO SCA LEVELS. ONSHORE FLOW REMAINS WEAK THRU THE LONG TERM PERIOD. HOWEVER...MAY EVENTUALLY END UP SEEING SEAS/SWELLS APPROACHING SCA LEVELS IF THE FLOW REMAINS PERSISTENT LONG ENOUGH. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 308 PM EDT MON JUN 29 2009 MEZ007>009-012>014-018>028-NHZ001>010-013-014-301915- 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- 308 PM EDT MON JUN 29 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 ADDITIONAL RAINFALL IS EXPECTED THROUGH TONIGHT WHICH WILL KEEP SMALL RIVERS AND STREAMS RUNNING HIGH. A RIVER FLOOD WARNING IS IN EFFECT FOR THE KENNEBEC RIVER AT SKOWHEGAN AND AN AREAL FLOOD WARNING IS IN EFFECT FOR CENTRAL OXFORD COUNTY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE WET WEATHER PATTERN WILL CONTINUE THROUGH SUNDAY WITH MINOR FLOODING A POSSIBILITY WITH ANY HEAVY SHOWERS OR THUNDERSTORMS THAT DEVELOP AND PRODUCE EXCESSIVE RAINFALL AMOUNTS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO CALL OR SEND IN SIGNIFICANT RAINFALL AMOUNTS OR REPORTS OF FLOODING TO THE NATIONAL WEATHER SERVICE ACCORDING TO STANDARD OPERATING PROCEDURES. ANZ150>154-301915- 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- 308 PM EDT MON JUN 29 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...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER REPORTS NOT NEEDED.
The Portland,ME radar (KGYX), 133 km away, was scanning. The volume nearest the first event began at 23:30 UTC.
2 flash flood. Local standard time, as filed.
Heavy rain caused flash flooding on small rivers and streams in the Bow area.
Heavy rain caused flash flooding on small rivers and streams in the Hooksett area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Hampshire in 2009Every state in 2009This day in weather historyWarnings in New Hampshire, June 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 2026-09-30. Each event’s entry at NCEI: 184640, 184642.