Slow moving thunderstorms dumped 2 to 3 inches of rain in east central New Hampshire and caused many road washouts on Route 113 in Holderness, which in turn brought down power lines. River Road in Dorchester was also washed out and impassable.
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.
Slow moving thunderstorms dumped 2 to 3 inches of rain in east central New Hampshire and caused many road washouts on Route 113 in Holderness, which in turn brought down power lines. River Road in Dorchester was also washed out and impassable.
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 10, 1:44 PM EST, 3 hours 16 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 244 PM EDT SUN AUG 10 2008 .SYNOPSIS... LOW PRESSURE CENTERED NEAR LAKE HURON WILL DIVE SOUTHEAST AND REFORM ALONG THE NEW JERSEY COAST EARLY MONDAY MORNING. THIS LOW WILL MOVE THROUGH THE GULF OF MAINE TUESDAY AND INTO THE CANADIAN MARITIMES WHERE IT WILL REMAIN NEARLY STATIONARY INTO FRIDAY. HIGH PRESSURE WILL CREST OVER THE AREA FRIDAY AND SATURDAY. LOW PRESSURE WILL APPROACH THE AREA SUNDAY. && .NEAR TERM /THROUGH TONIGHT/... CONVECTION FIRING ACROSS THE REGION THIS AFTERNOON...MUCH AS EXPECTED. STORM MOTION HAS BEEN VERY SLOW...AROUND 10KTS. THIS IS PRODUCING A SIGNIFICANT FLASH FLOODING THREAT. WILL EXTEND THE FLASH FLOOD WATCH FOR NH THROUGH MIDNIGHT. && .SHORT TERM /MONDAY/... MODELS CONTINUE TO HAVE PROBLEMS HANDLING THE SYSTEM FOR MONDAY. ALL ARE PRODUCING PRECIPITATION...BUT AMOUNTS AND TIMING VARY A BIT. POPS ARE EXPECTED TO BE PRETTY HIGH...WITH LOW CONFIDENCE IN QPF AMOUNTS. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... SLOW-MOVING LOW PRESSURE WILL CROSS THE AREA MONDAY NIGHT AND TUESDAY...THEN MOVES OFF INTO THE MARITIMES TUESDAY NIGHT AND WEDNESDAY. ANOTHER LOW WILL PASS WELL OFFSHORE THURSDAY AND THURSDAY NIGHT. OTHERWISE...AN UPPER LEVEL LOW WILL MAINTAIN UNSETTLED WEATHER AND THE PROSPECT OF A FEW SHOWERS ACROSS THE AREA EACH DAY. THE UPPER TROUGH WILL STICK AROUND FOR THE BALANCE OF THE PERIOD WITH UNSETTLED WEATHER AND TEMPERATURES NEAR OR BELOW NORMAL. NUMERICALS DIFFER ON TIMING OF INDIVIDUAL IMPULSES BUT IT SEEMS SAFE TO SAY THAT WE CAN EXPECT AT LEAST SOME PRECIPITATION ACROSS THE AREA EACH DAY. SLOW-MOVING LOW PRESSURE TRAVERSES THE AREA MONDAY NIGHT AND TUESDAY BRINGING A MORE ORGANIZED PRECIPITATION EVENT. THIS LOW MOVES OFF INTO THE MARITIMES TUESDAY NIGHT. WE FIND OURSELF WITH SOME WEAK RIDGING ON WEDNESDAY...BUT NOT ENOUGH TO PRECLUDE A FEW SHOWERS GIVEN THE LINGERING MOISTURE AND CYCLONIC FLOW. A SECOND SURFACE LOW PASSES WELL OFFSHORE THURSDAY AND THURSDAY NIGHT AND IT APPEARS WELL MISS THE HEAVIER PRECIPITATION WITH THIS DISTURBANCE. HOWEVER...THE CYCLONIC FLOW AND LINGERING MOISTURE ACROSS THE REGION WILL STILL RESULT IN A FEW SHOWERS FROM THURSDAY INTO THE UPCOMING WEEKEND. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... SHORT TERM...EXPECT SHOWERS AND THUNDERSTORMS TO AFFECT THE REGION THIS AFTERNOON AND EVENING. SKIES SHOULD CLEAR BRIEFLY BEFORE FOG/STRATUS FORM UP AND GENERATE IFR/LIFR CONDITIONS. LONG TERM...EXPECT MOSTLY MVFR/IFR MONDAY NIGHT THROUGH TUESDAY MORNING IN SHOWERS AND FOG. TUESDAY EXPECT IMPROVEMENT TO VFR WITH BRIEF MVFR CONDITIONS IN AFTN SHRA/TSRA. TUESDAY NIGHT AND WED NIGHT EXPECT IFR IN FOG. WED AND THU EXPECT VFR EXCEPT MVFR IN SHRA. && .MARINE... SHORT TERM...NO PROBLEMS EXPECTED. LONG TERM...WE MAY BRIEFLY APPROACH SCA WINDS AND SEAS MONDAY NIGHT AND EARLY TUESDAY AS SURFACE LOW DEVELOPS THEN TRACKS JUST TO THE SOUTH OF THE WATERS. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...FLASH FLOOD WATCH UNTIL MIDNIGHT EDT TONIGHT FOR NHZ001>009. MARINE...NONE. && SYNOPSIS...POHL NEAR TERM...POHL SHORT TERM...POHL LONG TERM...POHL/SCHWIBS AVIATION...POHL/SCHWIBS MARINE...POHL/SCHWIBS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 308 PM EDT SUN AUG 10 2008 ANZ150>154-111915- 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 SUN AUG 10 2008 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...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. MEZ007>009-012>014-018>028-NHZ010-013-014-111915- 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- STRAFFORD-INTERIOR ROCKINGHAM-COASTAL ROCKINGHAM- 308 PM EDT SUN AUG 10 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW HAMPSHIRE AND SOUTHEASTERN NEW HAMPSHIRE. .DAY ONE...THIS AFTERNOON AND TONIGHT SLOW MOVING SHOWERS AND THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN THIS EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY HEAVY RAIN IS POSSIBLE MONDAY. FLOOD WATCHES MAY BE NEEDED. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN THEIR REPORTS. NHZ001>009-111915- NORTHERN COOS-SOUTHERN COOS-NORTHERN GRAFTON-NORTHERN CARROLL- SOUTHERN GRAFTON-SOUTHERN CARROLL-SULLIVAN-MERRIMACK-BELKNAP- 308 PM EDT SUN AUG 10 2008 ...FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW HAMPSHIRE AND NORTHERN NEW HAMPSHIRE. .DAY ONE...THIS AFTERNOON AND TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLASH FLOOD WATCH. SLOW MOVING SHOWERS AND THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN THIS EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY HEAVY RAIN IS POSSIBLE MONDAY. FLOOD WATCHES MAY BE NEEDED. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO CALL OR RADIO IN THEIR REPORTS.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
510 PM EDT SUN AUG 10 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0506 PM HAIL ANDOVER 43.44N 71.82W
08/10/2008 E0.88 INCH MERRIMACK NH PUBLIC
0454 PM HAIL LACONIA 43.53N 71.47W
08/10/2008 E0.75 INCH BELKNAP NH PUBLIC
0454 PM HAIL GILFORD 43.55N 71.41W
08/10/2008 E1.00 INCH BELKNAP NH PUBLIC
&&
POHLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
513 PM EDT SUN AUG 10 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0504 PM HAIL LACONIA 43.53N 71.47W
08/10/2008 E0.88 INCH BELKNAP NH PUBLIC
&&
POHLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
521 PM EDT SUN AUG 10 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0510 PM TSTM WND DMG MEREDITH 43.66N 71.50W
08/10/2008 BELKNAP NH AMATEUR RADIO
LARGE TREE DOWN AND POWER OUT ON PEASE ROAD AND ROUTE 104
&&
POHLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
538 PM EDT SUN AUG 10 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0538 PM HAIL DANBURY 43.53N 71.86W
08/10/2008 E0.88 INCH MERRIMACK NH PUBLIC
&&
POHLPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GRAY ME
539 PM EDT SUN AUG 10 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0220 PM HAIL WNW SHAPLEIGH 43.54N 70.85W
08/10/2008 M0.75 INCH YORK ME TRAINED SPOTTER
0337 PM HAIL DUNBARTON 43.10N 71.62W
08/10/2008 E1.00 INCH MERRIMACK NH PUBLIC
0340 PM HAIL BOW 43.13N 71.55W
08/10/2008 E0.75 INCH MERRIMACK NH PUBLIC
0342 PM HAIL BOW 43.13N 71.55W
08/10/2008 E0.88 INCH MERRIMACK NH PUBLIC
0345 PM TSTM WND DMG DUNBARTON 43.10N 71.62W
08/10/2008 MERRIMACK NH PUBLIC
TREE DOWN BLOCKING ROAD
0350 PM HAIL LONDONDERRY 42.85N 71.36W
08/10/2008 E0.75 INCH ROCKINGHAM NH PUBLIC
0353 PM HAIL DERRY 42.88N 71.33W
08/10/2008 E0.75 INCH ROCKINGHAM NH PUBLIC
0354 PM TSTM WND DMG 7 NE MONROE 44.32N 71.96W
08/10/2008 GRAFTON NH AMATEUR RADIO
TREES BLOCKING ROAD ON ROUTE 135 NEAR DAM ROAD.
0354 PM HAIL LONDONDERRY 42.85N 71.36W
08/10/2008 E1.00 INCH ROCKINGHAM NH PUBLIC
0354 PM HAIL LONDONDERRY 42.85N 71.36W
08/10/2008 E1.00 INCH ROCKINGHAM NH PUBLIC
0359 PM TSTM WND DMG LITTLETON 44.31N 71.77W
08/10/2008 GRAFTON NH PUBLIC
TREES DOWN IN PARKING LOT OF HAMPTON INN.
0400 PM TSTM WND DMG LONDONDERRY 42.85N 71.36W
08/10/2008 ROCKINGHAM NH PUBLIC
TREE DOWN IN YARD. TOOK DOWN POWER LINES.
0410 PM HAIL 1 SSW CLAREMONT 43.36N 72.35W
08/10/2008 E0.88 INCH SULLIVAN NH TRAINED SPOTTER
0412 PM HAIL CLAREMONT 43.38N 72.34W
08/10/2008 E0.75 INCH SULLIVAN NH PUBLIC
0442 PM HAIL LACONIA 43.53N 71.47W
08/10/2008 E0.88 INCH BELKNAP NH PUBLIC
0454 PM HAIL LACONIA 43.53N 71.47W
08/10/2008 E0.75 INCH BELKNAP NH PUBLIC
0454 PM HAIL GILFORD 43.55N 71.41W
08/10/2008 E0.75 INCH BELKNAP NH PUBLIC
0454 PM HAIL GILFORD 43.55N 71.41W
08/10/2008 E1.00 INCH BELKNAP NH PUBLIC
0455 PM HAIL GILFORD 43.55N 71.41W
08/10/2008 E0.75 INCH BELKNAP NH PUBLIC
STREET FLOODING.
0503 PM HAIL 3 W LACONIA 43.53N 71.53W
08/10/2008 E0.75 INCH BELKNAP NH TRAINED SPOTTER
0504 PM HAIL LACONIA 43.53N 71.47W
08/10/2008 E0.88 INCH BELKNAP NH PUBLIC
0506 PM HAIL ANDOVER 43.44N 71.82W
08/10/2008 E0.88 INCH MERRIMACK NH PUBLIC
0510 PM TSTM WND DMG MEREDITH 43.66N 71.50W
08/10/2008 BELKNAP NH AMATEUR RADIO
LARGE TREE DOWN AND POWER OUT ON PEASE ROAD AND ROUTE 104
0538 PM HAIL DANBURY 43.53N 71.86W
08/10/2008 E0.88 INCH MERRIMACK NH PUBLIC
&&
POHLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
551 PM EDT SUN AUG 10 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0532 PM HAIL HOLDERNESS 43.73N 71.59W
08/10/2008 E0.88 INCH GRAFTON NH PUBLIC
&&
POHLThe Portland,ME radar (KGYX), 107 km away, was scanning. The volume nearest the first event began at 21:58 UTC.
2 flash flood. Local standard time, as filed.
Heavy rain resulted in flash flooding which washed out portions of Route 113 in Holderness.
Heavy rain caused flash flooding in Dorchester washing out portions of River Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Hampshire in 2008Every state in 2008This day in weather historyWarnings in New Hampshire, August 2008
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: 133958, 133959.