6-6-14 ..HOT TEMPERATURES, LOW HUMIDITY AND OCCASIONALLY BREEZY WINDS THIS WEEKEND... ...ISOLATED THUNDERSTORMS POSSIBLE OVER THE SIERRA IN THE AFTERNOONS AND EVENINGS... * IMPACTS: ELEVATED HEAT CONCERNS ESPECIALLY FOR SENSITIVE GROUPS. POTENTIAL FOR LARGER FIRE GROWTH AND RAPID FIRE SPREAD. * CONFIDENCE: HIGH FOR HOT TEMPERATURES, LOW AFTERNOON HUMIDITY AND AREAS OF POOR RH RECOVERY. MODERATE FOR WIND SPEEDS AND THUNDERSTORMS. * TIMING AND STRENGTH: HOT TEMPERATURES THROUGH MONDAY...WITH THE HOTTEST TEMPERATURES (100-108 IN THE VALLEY) AND LOWEST HUMIDITY IN MOST LOCATIONS EXPECTED ON SUNDAY. OVERNIGHT LOWS WILL REMAIN IN THE 70S IN THERMAL BELT LOCATIONS SATURDAY AND SUNDAY NIGHTS. DRYING, NORTHERLY WINDS (5-15 MPH WITH LOCAL GUSTS TO 30 MPH) AND HIGHEST FIRE DANGER EXPECTED SATURDAY NIGHT THROUGH SUNDAY. * THUNDERSTORMS: ISOLATED THUNDERSTORMS POSSIBLE OVER THE SIERRA THIS AFTERNOON AND EVENING AND AGAIN FRIDAY AND INTO THE WEEKEND.