Table A-A. Wind speed means and extremes for 10 meter tower level at GRI

               Monthly
                 Mean         Greatest Hourly Mean         Greatest Peak Gusts
                Speed        Speed       Direction        Speed       Direction
                (MPH)        (MPH)     (deg) (16th)       (MPH)     (deg) (16th)

January          6.6          46.2       240    WSW         28.3       240    WSW
February         8.1          40.7       234    SW          31.5       255    WSW
March            9.7          44.0       234    SW          29.5       240    WSW
April           10.7          48.0       242    WSW         34.2       247    WSW
May             10.7          44.8       236    SW          31.9       270    W
June            10.8          41.1       230    SW          34.5       223    SW
July            10.0          40.4       243    WSW         36.5       232    SW
August           9.4          37.9       230    SW          29.8       256    WSW
September        8.8          40.8       245    WSW         29.2       240    WSW
October          8.8          42.5       230    SW          29.1       224    SW
November         8.0          45.3       237    WSW         30.8       237    WSW
December         7.1          39.5       236    SW          25.6       238    WSW

ANNUAL           9.1           48       242    WSW         36.5       232    SW

a. Data period of record spans January 1994 through December 2023.