From NOAA:
Today –
AS OF 8:45 AM PDT THURSDAY.TODAY WILL ALSO MARK THE TRANSITION TO A SUBSTANTIAL WARM-UP FOR THE SF/MONTEREY BAY REGION AS A RIDGE OF HIGH PRESSURE BEGINS TO BUILD IN FROM THE SOUTH…. LOOK FOR A 5 TO 10 DEGREE INCREASE IN TEMPERATURES TOMORROW…. MAIN FORECAST ISSUE FOR THE SHIFT WILL BE JUST HOW WARM/HOT TEMPERATURES WILL BE BY THE END OF THE WEEK AND INTO NEXT WEEK. CURRENT BC GUIDANCE SHOWS THE ECMWF RUNNING WELL ABOVE EVERY MODEL (RECORD HIGHS ARE INDICATED BY MONDAY). IN ADDITION…THE ECMWF BRINGS THE MOST HEAT TO THE COAST AND INDICATES 80S WITH EVEN SOME LOWER 90S TO THE WATER ON MONDAY. WILL KEEP A CLOSE EYE ON OTHER GUIDANCE THAT COMES IN DURING THE SHIFT BEFORE DECIDING IF ADDITIONAL PRODUCTS NEED TO BE ISSUED OR NOT AND JUST HOW MUCH WEIGHT TO GIVE THE MUCH WARMER ECMWF NUMBERS. FOR NOW THE MESSAGE REMAINS THE SAME…MUCH WARMER WEATHER CAN BE EXPECTED FOR THIS WEEKEND INTO NEXT WEEK.
This was yesterday-
“HOT WEATHER IS EXPECTED STARTING FRIDAY AND CONTINUING THROUGH THE EARLY PORTIONS OF NEXT WEEK… ESPECIALLY INLAND AS A RIDGE CONTINUES TO BUILD OVER THE DESERT SOUTHWEST WEST INTO THE EASTERN PACIFIC. EVEN THOUGH IT APPEARS THAT THE WINDS WILL REMAIN LIGHT…THERE COULD BE FIRE WEATHER CONCERNS AS FUELS ARE AT CRITICALLY DRY LEVELS.”