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WeatherMatrix
© 2002 WeatherMatrix.Net - Redistribution
Prohibited. Usage logged.
From: Jesse Ferrell (WeatherMatrix) (ferrell{at}weathermatrix.net)
Date: Mon Apr 19 2004 - 08:47:30 EDT
http://www.weathermatrix.net/archive/tornadoreports/0043.html
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
540 PM EDT SUN APR 18 2004
...WIDESPREAD WIND DAMAGE ACROSS WESTERN NEW YORK...
A LINE OF SEVERE THUNDERSTORMS DEVELOPED AHEAD OF A WARM FRONT AS IT
CROSSED WESTERN AND CENTRAL NEW YORK EARLIER TODAY. A LARGE CLUSTER
OF THUNDERSTORMS WHICH MOVED FROM MICHIGAN ACROSS SOUTHERN ONTARIO
EARLY THIS MORNING REDEVELOPED SOUTHWARD ACROSS THE NIAGARA
PENINSULA AROUND 10 AM AND CROSSED INTO THE NIAGARA FALLS AND
BUFFALO AREAS AROUND 11 AM. STRAIGHT LINE WINDS WERE CLOCKED AT 86
MPH AT THE NIAGARA FALLS AIRPORT AND 53 MPH AT THE BUFFALO AIRPORT
ABOUT 20 MINUTES LATER. NUMEROUS REPORTS WERE RECEIVED OF DOWNED
TREES AND WIRES...AND A "SHELF" TYPE ROLL CLOUD WAS OBSERVED AS THE
STORM APPROACHED...WITH SKIES DARKENING SO FAST THAT STREET LIGHTS
TURNED ON.
THE STORM RACED ACROSS WESTERN NEW YORK THROUGH THE MIDDAY HOUR AND
EVENTUALLY MOVED INTO CENTRAL NEW YORK AFTER 1 PM. AGAIN...WINDS
WERE ESTIMATED AT 80 TO 90 MPH IN THE HIGHEST GUSTS WITH WIND DAMAGE
OBSERVED IN A SWATH WHICH EXTENDED FROM SOUTHERN NIAGARA COUNTY AND
BUFFALO'S NORTHERN SUBURBS...EAST ACROSS GENESEE...WYOMING...
LIVINGSTON AND ONTARIO COUNTIES. LARGE HAIL WAS ALSO REPORTED
ACROSS MONROE AND WAYNE COUNTIES.
PRELIMINARY INVESTIGATIONS FROM NATIONAL WEATHER SERVICE
METEOROLOGISTS AND ANALYSIS OF RADAR SIGNATURES INDICATE THAT THE
DAMAGE WAS CAUSED BY "STRAIGHT LINE" WINDS...ALSO KNOWN AS A
"DERECHO". THESE TYPE SYSTEMS AFFECT MUCH LARGER AREAS THAN ISOLATED
TORNADOES.
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