This is what I have been dealing with for the last couple of weeks or longer. Cancelled more flights than I did all last winter. Times are Zulu so subtract 7 hours. Line 3 says that from 1900 (noon) winds will be from the northwest at 24 knots, gusting to 35knots. That won't change until line 4 kicks in at 11:00 tonight. 1 knot equals 1.15 mph.
TAFBOI TAF KBOI 141132Z 141212 30008KT P6SM VCSH SCT030 OVC045
FM1600 31015KT P6SM SCT040 BKN060
FM1900 32024G35KT P6SM BKN060
FM0500 32012KT P6SM SCT060 BKN100=