Tornado in downtown Pittsburgh???
Posted: Thu Aug 09, 2007 7:06 pm
Just heard this on my break, anyone have a link???
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000
NOUS41 KPBZ 110353
PNSPBZ
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-
020>023-029>032-WVZ001>004-012-021>023-041-111600-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1153 PM EDT FRI AUG 10 2007
...PUBLIC INFORMATION STATEMENT...
...MICROBURST HITS COLUMBIANA COUNTY, OH...
ABOUT 120 PM ON AUGUST 9TH, A MICROBURST HIT THE NORTHERN
COLUMBIANA COUNTY TOWN OF SALEM. THE LENGTH OF SPORADIC DAMAGE WAS
ABOUT 5 MILES AND EXTENDED FROM SALEM TO LEETONIA. THE MAXIMUM
WIDTH WAS ABOUT 200 YARDS. ESTIMATED MAXIMUM WINDS WERE ABOUT 85
MPH. THE GREATEST DAMAGE OCCURRED IN THE CITY OF SALEM. THE ROOF
WAS RIPPED OFF A GAS STATION ALONG EAST STATE STREET. ALSO, SOME
MINOR STRUCTURAL DAMAGE OCCURRED TO THE GIANT EAGLE FOOD STORE.
A TRUCK WAS OVERTURNED AND AN AUTOMOBILE WAS PUSHED ON TOP OF
ANOTHER. NUMEROUS TREES, POWER LINES AND TRANSFORMERS WERE ALSO
KNOCKED DOWN AND SEVERAL SIGNS WERE DAMAGED.
...TORNADO HITS PITTSBURGH...
ABOUT 250 PM ON AUGUST 9TH, AN EF0 TORNADO TOUCHED DOWN IN THE WEST
END AREA OF PITTSBURGH. THE DAMAGE PATH AFFECTED AREAS ALONG
TOLEDO, MUNICIPAL, AND GREENWAY STREETS AND BORDERED CHARTIERS
AVE. MANY TREES WERE EITHER SNAPPED OR TOPPLED AND NUMEROUS WIRES
WERE KNOCKED DOWN. THERE WAS SOME STRUCTURAL DAMAGE TO A FEW HOMES
AND BUILDINGS. THE LENGTH OF THE DAMAGE TRACK WAS ABOUT ONE HALF
MILE. THE WIDTH WAS ABOUT 200 YARDS AND THE MAXIMUM ESTIMATED
WINDS WERE CLOSE TO 85 MPH. THIS ESTIMATED WIND SPEED PUTS THIS
TORNADO AT THE UPPER END OF THE EF0 SCALE. THE ENHANCED FUJITA
SCALE (EF) BEGAN ON FEBRUARY 1ST, 2007. THIS IMPROVED SCALE IS
MORE SPECIFIC AND CONTAINS MANY MORE DAMAGE INDICATORS. IT ALLOWS
FOR MORE DETAILED ANALYSIS AND BETTER CORRELATION BETWEEN DAMAGE
AND WIND SPEED.
ENHANCED FUJITA SCALE
EF-SCALEWINDS (MPH)
EF065-85
EF186-110
EF2111-135
EF3136-165
EF4166-200
EF5>200
THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE IN
PITTSBURGH COVERS 15 COUNTIES IN WESTERN PENNSYLVANIA, 11 IN
EAST-CENTRAL OHIO, 9 IN NORTHERN WEST VIRGINIA, AND GARRETT
COUNTY, MARYLAND. OVER THE LAST TEN YEARS WE AVERAGED ABOUT 4 TO 5
TORNADOES A YEAR. THIS IS THE SECOND CONFIRMED TORNADO THIS YEAR
IN OUR COUNTY WARNING AREA. THE FIRST OCCURRED ON MAY 1ST IN
MERCER COUNTY, PA.
...MICROBURST HITS UPTOWN SECTION OF PITTSBURGH...
ABOUT 300 PM ON AUGUST 9TH, A MICROBURST HIT THE UPTOWN SECTION OF
PITTSBURGH AND GENERALLY EXTENDED ALONG FIFTH STREET TO NEAR
MOULTRIE STREET. SEVERAL BUILDINGS SUFFERED SOME STRUCTURAL
DAMAGE. THE WALLS OF SEVERAL BUILDINGS EITHER COLLAPSED OR WERE
BLOWN OUT. THE ROOFS WERE TORN OFF SEVERAL BUILDINGS AS WELL.
WINDOWS WERE BROKEN AND SOME SIDING WAS TORN FROM SEVERAL
BUILDINGS. THERE WERE ALSO SEVERAL TREES SNAPPED. THE LENGTH OF THE
MICROBURST WAS ABOUT 700 YARDS AND THE WIDTH ABOUT 400 YARDS. THE
ESTIMATED MAXIMUM WINDS WERE ALSO ABOUT 85 MPH.
A DOWNBURST IS A STRONG WIND GUST FROM A THUNDERSTORM ON OR NEAR
THE GROUND. DOWNBURSTS ARE MORE COMMON THAN TORNADOES. A
MICROBURST IS A DOWNBURST THAT PRODUCES A SWATH OF DAMAGE LESS
THAN 2.5 MILES WIDE. A MACROBURST IS A DOWNBURST THAT PRODUCES A
SWATH OF DAMAGE GREATER THAN 2.5 MILES WIDE.
KANE/ALLEN/LOWRIE/GELMAN