These reports are from earlier today in the Miami NWS Forecast area. I suspect some of the wind speeds are due to the pressure gradient.

1254 PM NON-TSTM WND GST 4 SE DOWNTOWN MIAMI 25.73N 80.16W
05/24/2012 M58.00 MPH AMZ630 FL MESONET

PEAK WIND GUST OF 50 KT...58 MPH...AT VIRGINIA KEY NOS
SITE. SUSTAINED WIND 39 KT AT 1254 PM EDT WITH SUSTAINED
WINDS OF 34 KT OR GREATER OBSERVED FROM 1254 PM TO 118 PM
EDT.

1255 PM NON-TSTM WND GST N KEY BISCAYNE 25.69N 80.16W
05/24/2012 M62.00 MPH MIAMI-DADE FL MESONET

PEAK GUST OF 54 KT...62 MPH...AT WX FLOW SITE ON KEY
BISCAYNE. SUSTAINED WIND 33 KT...38 MPH.

1255 PM NON-TSTM WND GST NORTH MIAMI 25.89N 80.18W
05/24/2012 M46.00 MPH MIAMI-DADE FL MESONET

PEAK WIND GUST OF 40 KT...46 MPH...AT WEATHER FLOW SITE
XNMI IN NORTH MIAMI.

0100 PM NON-TSTM WND GST 4 ESE CORAL GABLES 25.71N 80.21W
05/24/2012 M50.00 MPH AMZ630 FL MESONET

PEAK WIND GUST OF 43 KT...50 MPH...AT WEATHER FLOW SITE
DINNER KEY LIGHT ON BISCAYNE BAY. SUSTAINED WIND OF 34
KT...39 MPH AT THIS TIME.

0100 PM NON-TSTM WND GST 3 SW KEY BISCAYNE 25.66N 80.19W
05/24/2012 M58.00 MPH AMZ630 FL MESONET

PEAK WIND GUST OF 50 KT...58 MPH...AT WX FLOW SITE
BISCAYNE BAY LIGHT 20. SUSTAINED WINDS OF 34 KT...39
MPH...OR GREATER FROM 1235 PM EDT TO 130 PM EDT.