000
NOUS41 KILN 191849
PNSILN
INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-200700-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
249 PM EDT FRI SEP 19 2008

HOW WIND IS MEASURED AND RECORDED OVER THE YEARS HAS CHANGED.
CURRENTLY THE NATIONAL WEATHER SERVICE TRACKS TWO TYPES OF WIND
SPEEDS. A SUSTAINED WIND...WHICH IS AN AVERAGE OVER 2 MINUTES. BEFORE
1984...A FASTEST MILE WAS RECORDED RATHER THAN THE 2 MINUTE
SUSTAINED. THIS WAS THE AVERAGE OVER 1 MINUTE.

NEXT IS AN INSTANTANEOUS GUST...A VALUE AVERAGED OVER 3 SECONDS.
THE NATIONAL WEATHER SERVICE DID NOT START TO INCLUDE THE
INSTANTANEOUS GUSTS IN THEIR YEAR END SUMMARIES UNTIL 1984.
THEREFORE IT IS NOT POSSIBLE TO TRACK ALL WIND GUSTS BEFORE 1984.

COMPARING THE RECORDED WINDS FROM SUNDAYS HIGH WIND EVENT. AT
DAYTON...THE HIGHEST SUSTAINED WIND WAS 50 MPH...AND THE HIGHEST
GUST WAS 69 MPH. BOTH OF THESE WERE MEASURED AT THE DAYTON
INTERNATIONAL AIRPORT. THE HIGHEST SUSTAINED WIND RECORDED AT
DAYTON...DATING BACK TO 1919 WAS 78 MPH...ON JUNE 16 1950. IT CAN
BE ASSUMED THAT GUSTS WERE HIGHER. THE HIGHEST GUST RECORDED...SINCE
1984...WAS 74 MPH ON JULY 19 1998. THEREFORE THE GUSTS ON SUNDAY
WERE THE SECOND HIGHEST GUST ON RECORD AND THE THIRD HIGHEST WIND
SPEED RECORDED SINCE 1919.

AT CINCINNATI...THE HIGHEST SUSTAINED WIND ON SUNDAY WAS 54
MPH...AND THE HIGHEST GUST WAS 74 MPH. THESE WERE MEASURED AT THE
CINCINNATI-NORTHERN KENTUCKY INTERNATIONAL AIRPORT. THE HIGHEST GUST
RECORDED...SINCE 1984...WAS 76 MPH ON APRIL 2 2006. THE HIGHEST
SUSTAINED WIND RECORDED IN CINCINNATI...DATING BACK TO 1939 WAS 60
MPH...RECORDED ON NOVEMBER 20 1950. THEREFORE THE GUSTS ON SUNDAY
WERE THE SECOND HIGHEST GUST ON RECORD AND THE SUSTAINED WINDS
WERE THE THIRD HIGHEST ON RECORD.

FINALLY AT COLUMBUS...THE HIGHEST SUSTAINED WIND ON SUNDAY WAS 54
MPH...AND THE HIGHEST GUST WAS 75 MPH. THESE WERE MEASURED AT PORT
COLUMBUS INTERNATIONAL AIRPORT. THE HIGHEST GUST RECORDED...SINCE
1916...WAS 110 MPH ON JULY 31 1916 AND THE HIGHEST SUSTAINED WIND
RECORDED WAS 84 MPH ON THE SAME DATE. THESE WERE RECORDED IN
DOWNTOWN COLUMBUS. THEREFORE THE GUSTS ON SUNDAY WERE THE SECOND
HIGHEST GUST ON RECORD...BUT THE HIGHEST EVER RECORDED AT PORT
COLUMBUS AND THE SUSTAINED WINDS WERE THE SIXTH HIGHEST ON RECORD.

$$

SITES/RYAN