096 NOUS41 KBOX 312051 AAA PNSBOX CTZ002>004-MAZ002>024-026-NHZ011-012-015-RIZ001>008-011900- PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 451 PM EDT WED OCT 31 2012 ...MICROBURST /STRAIGHT LINE WIND DAMAGE/ CONFIRMED IN WAREHAM IN PLYMOUTH COUNTY MA... LOCATION...WAREHAM IN PLYMOUTH COUNTY MA DATE...OCTOBER 30 2012 ESTIMATED TIME...7:40 TO 7:45 PM EDT ESTIMATED MAXIMUM WIND SPEED...60-70 MPH W/ POCKETS OF 80-90 MPH MAXIMUM PATH WIDTH...2 MILES PATH LENGTH...2 MILES BEGINNING LAT/LON...41.75N / 70.66W ENDING LAT/LON...41.76N / 70.72W * FATALITIES...0 * INJURIES...0 * THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO CHANGE PENDING FINAL REVIEW OF THE EVENT(S) AND PUBLICATION IN NWS STORM DATA. ...SUMMARY... THE NATIONAL WEATHER SERVICE IN TAUNTON MA HAS CONFIRMED A MICROBURST /STRAIGHT LINE WIND DAMAGE/ IN WAREHAM LOCATED IN SOUTHERN PLYMOUTH COUNTY MA ON THE EVENING OF TUESDAY...OCTOBER 30 2012. A SWATH OF 60 TO 70 MPH WIND GUSTS OCCURRED IN THAT REGION WITH POCKETS OF 80 TO 90 MPH GUSTS. THE HARDEST HIT LOCATIONS IN WAREHAM WERE SWIFTS BEACH...PINEHURST AND ONSET BAY MARINA. THE SURVEY TEAM DETERMINED THAT A DAMAGE AREA OF 2 MILES IN LENGTH AND 2 MILES IN WIDTH OCCURRED WITH 3 DISCRETE AREAS AFFECTED IN WAREHAM ...SWIFTS BEACH...PINEHURST AND THE ONSET BAY MARINA. BASED ON RADAR SIGNATURES AND EYEWITNESS ACCOUNTS... THUNDERSTORM WIND DAMAGE INITIATED IN FALMOUTH MASSACHUSETTS AROUND 725 PM...AND THEN BECAME MORE INTENSE OVER THE WAREHAM AREA AROUND 740 PM. THE SURVEY TEAM DETERMINED THAT APPROXIMATELY 100 TREES WERE SIGNIFICANTLY DAMAGED OR KNOCKED DOWN IN WAREHAM...WITH MANY BRINGING DOWN WIRES. THE INTIAL DOWNDRAFT OCCURRED IN SWIFTS BEACH THEN HEAD NORTH NORTHEAST OVER PINEHURST TOWARD NARROWS ROAD. IN THE SWIFTS BEACH AREA THERE WERE NUMEROUS DOWNED TREES WITH ONE TREE IMPALING THE ROOF OF A HOUSE ON SHERMAN STREET. OTHER POINTS OF INTEREST IN THE SWIFTS BEACH AREA WERE LOCATED ON PILGRAM AVENUE...JUDSON STREET...PINE STREET AND SWIFTS BEACH ROAD. TREES WERE ALSO DOWNED NEAR THE FIRE DEPARTMENT ON MAIN STREET LOCATED IN DOWNTOWN WAREHAM. TREES WERE ALSO DOWNED ON CHURCH AVENUE AT THE REDWOOD PARK ELDERLY COMPLEX. IN THE PINEHURST AREA OF WAREHAM...DOWNED TREES WERE EVIDENT ON FRANCONIA AVENUE AND PINEHURST DRIVE. ON NARROWS ROAD...A COUPLE OF TREES WERE KNOCKED DOWN ACROSS THE ROAD. IN THE ONSET BAY MARINA AREA...BOATS THAT WERE STORED ON A 3 STORY TIER WERE TILTED IN THEIR RACKS. A SAILBOAT IN THE MARINA WAS TILTED 90 DEGREES IN THE WIND...WITH THE MAST PARALLEL WITH THE WATER FOR APPROXIMATELY 2 MINUTES BEFORE RIGHTING ITSELF. ADDITIONALLY...2 BOATS OF UNKNOWN SIZE WERE REPORTED SUNK IN THE DOWNDRAFT. IN THE NANUMETT HEIGHTS SECTION OF POINT INDEPENDENCE /WHICH IS PART OF ONSET/...SIGNIFICANT TREE DAMAGE WAS CONFIRMED ON PROSPECT STREET AND WEBSTER STREET. A PUBLIC WIND GUST OBSERVATION OF 85 TO 90 MPH FROM THE SOUTH SOUTHWEST WAS REPORTED FROM ONSET BEACH. THE TIME OF THE OBSERVATION WAS APPROXIMATELY 740 PM. THE SURVEY TEAM AND EYEWITNESS ACCOUNTS OBSERVED MUCH OF THE TREE DAMAGE TO BE ORIENTED IN A SOUTH TO NORTH DIRECTION...WHICH CONFIRMED A MICROBURST. MUCH THANKS TO THE LOCAL POLICE AND FIRE DEPARTMENTS FOR THEIR ASSISTANCE IN THIS STORM SURVEY. THIS INFORMATION CAN ALSO BE FOUND ON OUR WEBSITE AT WEATHER.GOV/BOX. FOR REFERENCE... A MICROBURST IS A CONVECTIVE DOWNDRAFT WITH AN AFFECTED OUTFLOW AREA OF LESS THAN 2 1/2 MILES WIDE AND PEAK WINDS LASTING LESS THAN 5 MINUTES. MICROBURSTS MAY INDUCE DANGEROUS HORIZONTAL/VERTICAL WIND SHEARS...WHICH CAN ADVERSELY AFFECT AIRCRAFT PERFORMANCE AND CAUSE PROPERTY DAMAGE. STRAIGHT-LINE WINDS ARE GENERALLY ANY WIND THAT IS NOT ASSOCIATED WITH ROTATION...USED MAINLY TO DIFFERENTIATE THEM FROM TORNADIC WINDS. $$ FRANK/BUTTRICK