Initially: winds 100° at 6kt, visibility 10km, Few (1-2 oktas) at 6000ft. PROB40 TEMPO 1415/1421: winds variable at 15kt, gusting 30kt, visibility 4km, Thunderstorm with rain. PROB30 TEMPO 1415/1420: winds variable at 22kt, gusting 45kt, visibility 1.5km, Heavy thunderstorm with rain. Worst expected conditions: IFR.