Public Information Statement
Issued by NWS

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000
NOUS41 KPBZ 282209
PNSPBZ
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-
020>023-029-031-073>076-WVZ001>004-012-021>023-041-290215-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
609 PM EDT MON JUL 28 2014

...MICROBURST CONFIRMED NEAR NEW MARTINSVILLE IN WETZEL COUNTY
WEST VIRGINIA...

LOCATION...NEW MARTINSVILLE IN WETZEL COUNTY WEST VIRGINIA
DATE...27 JULY 2014
ESTIMATED TIME...450 PM EDT
ESTIMATED MAXIMUM WIND SPEED...80 MPH
BEGINNING LAT/LON...39.686N / 80.875W
ENDING LAT/LON...39.683N / 80.849W
* FATALITIES...0
* INJURIES...0

* THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
  CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN NWS
  STORM DATA. THIS CONCLUSION MAY BE MODIFIED IF VIDEO EVIDENCE TO
  THE CONTRARY BECOMES AVAILABLE.

...SUMMARY...
THE NATIONAL WEATHER SERVICE IN PITTSBURGH PA HAS CONFIRMED A
MICROBURST /STRAIGHT LINE WIND DAMAGE/ NEAR NEW MARTINSVILLE IN
WETZEL COUNTY WEST VIRGINIA ON 27 JULY 2014.

MODEST TREE DAMAGE BEGAN IN MONROE COUNTY OHIO NORTHWEST OF NEW
MARTINSVILLE WEST VIRGINIA. DAMAGE THEN FANNED OUT AS THE STORM
PROGRESSED EASTWARD THROUGH NORTHERN SECTIONS OF NEW MARTINSVILLE.

SIGNIFICANT DAMAGE ALONG 3RD STREET WAS BOUNDED BY NORTHGATE DRIVE
TO THE NORTH AND ROSARY ROAD TO THE SOUTH. TWO AREAS OF FOCUSED
DAMAGE WERE NOTED. NEAR GREENLAWN MEMORIAL PARK...MANY TREES WERE
UPROOTED OR SNAPPED AND HOMES SUFFERED THRESHOLD DAMAGE TO
FASCIA...SIDING AND CAPPING SHINGLES. FARTHER NORTH...A CINDER
BLOCK BUILDING APPEARED TO SUFFER A GARAGE DOOR FAILURE...WHICH
ENABLED THE ROOF TO BE LIFTED OFF A PORTION OF THE BUILDING. ALSO
IN THIS NORTHERN SECTION...A WEST-FACING PORCH ROOF COLLAPSED AS
THE WIND BLEW THE SUPPORT BEAMS OUT. IN BOTH DEBRIS AREAS...
MOBILE HOMES SUFFERED DAMAGE FROM FALLING TREES. ONE MOBILE HOME
WAS COMPLETELY SHIFTED OFF ITS FOUNDATION AS A TREE FELL AND ITS
LARGE ROOT BALL BENEATH THE HOME WAS UNEARTHED.

SEVERAL RESIDENTS DESCRIBED A SUDDEN SHIFT IN WIND DIRECTION
IN THE MIDST OF THE EVENT...AS WELL AS LARGE HAIL OF AT LEAST HALF-
DOLLAR SIZE. HOWEVER...THE EXPANDING FANNED PATTERN OF THE DEBRIS
FIELD SHOWED NO CLEAR INDICATION OF CONVERGENCE OR ROTATION. THUS...
THE HIGH-END EF0 DAMAGE WAS CONCLUDED TO HAVE BEEN CAUSED MOST
LIKELY BY A MICROBURST. THIS CONCLUSION IS SUPPORTED BY RADAR
DATA...GIVEN THE DESCENT OF A VERY HIGH-REFLECTIVITY CORE WHERE
DAMAGE WAS FIRST DETECTED IN MONROE COUNTY.

MICROBURSTS OCCUR AS COLD AIR ALOFT IN A THUNDERSTORM DESCENDS
QUICKLY TOWARD THE GROUND AND ACCELERATES. WIND SPEEDS IN A
MICROBURST CAN BE AT LEAST AS STRONG AS SOME TORNADOES AND CAN
CAUSE COMPARABLE DAMAGE OVER A POTENTIALLY LARGE AREA.

THIS INFORMATION CAN ALSO BE FOUND ON OUR WEBSITE AT
WEATHER.GOV/PITTSBURGH.


$$

KRAMAR/BOOKBINDER/HALEY





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