Public Information Statement
Issued by NWS Portland, ME

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000 NOUS41 KGYX 042009 CCA PNSGYX MEZ007>009-012>014-018>028-NHZ001>015-050415- PUBLIC INFORMATION STATEMENT...CORRECTED NATIONAL WEATHER SERVICE GRAY ME 409 PM EDT TUE AUG 4 2015 ...MICROBURST /STRAIGHT LINE WIND DAMAGE/ CONFIRMED NEAR LANCASTER IN COOS COUNTY NEW HAMPSHIRE... LOCATION...LANCASTER IN COOS COUNTY NEW HAMPSHIRE DATE...AUGUST 3RD 2015 ESTIMATED TIME...543 PM EDT ESTIMATED MAXIMUM WIND SPEED...55-60 MPH WITH GUSTS TO 75 MPH MAXIMUM PATH WIDTH...100 YARDS PATH LENGTH...1.5 MILES BEGINNING LAT/LON...44.496 / 71.594 ENDING LAT/LON...44.512 / 71.569 * FATALITIES...2 * INJURIES...15-20 * 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 GRAY ME HAS CONFIRMED A MICROBURST /STRAIGHT LINE WIND DAMAGE/ NEAR LANCASTER IN COOS COUNTY NEW HAMPSHIRE ON 08 03 2015. THE NATIONAL WEATHER SERVICE CONDUCTED A STORM SURVEY TO DETERMINE THE CAUSE OF WINDS THAT RESULTED IN TWO FATALITIES, NUMEROUS INJURIES, AND DAMAGE IN THE VICINITY OF THE LANCASTER NEW HAMPSHIRE FAIRGROUNDS AT APPROXIMATELY 543 PM EDT ON THE EVENING OF AUGUST 3RD. AREAL AND GROUND SURVEYS CONFIRMED DAMAGE CONSISTENT WITH A MICROBURST. NUMEROUS SOFTWOOD TREES WERE BOTH BLOWN OVER AND SNAPPED WHILE NO STRUCTURAL DAMAGE OCCURRED TO BUILDINGS. THIS TYPE OF DAMAGE IS CONSISTENT WITH WINDS SPEEDS OF 55-60 MPH WITH LOCALIZED GUSTS APPROACHING 75 MPH. MOST OF THE TREE DAMAGE OCCURRED ALONG AND ADJACENT TO THE CONNECTICUT RIVER. THE NATIONAL WEATHER SERVICE WOULD LIKE TO THANK THE NEW HAMPSHIRE DEPARTMENT OF HOMELAND SECURITY AND EMERGENCY MANAGEMENT, NEW HAMPSHIRE STATE POLICE, AND LANCASTER EMERGENCY MANAGEMENT FOR ASSISTING IN THIS SURVEY. THIS INFORMATION CAN ALSO BE FOUND ON OUR WEBSITE AT WEATHER.GOV/GYX. 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. $$ LULOFS/ARNOTT

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