NICE FRIDAY, THEN THE NEXT HEAT WAVE
The Summer of '17 has taken a brief break with highs only in the mid to upper 90s on Thursday. But hotter weather is destined for this weekend as upper level high pressure shifts back to the west. Currently, the center of massive high pressure is over Kansas with horribly hot weather in the middle of the country. That system will be back over our region by Sunday with much hotter conditions. Highs on Friday should hold in the mid or upper 90s, but 101° is forecast for Saturday and 105° by Sunday. Heat stress will become moderate again this weekend.
Smoke from the category 5 Detwiler fire in Mariposa County could drift south according to specialized models that predict smoke movement. We may see smoke layers that primarily affect mountain towns above 5,000 feet. Air quality from the fire should not be a major issue in the valley portion of Kern County, despite an Air Quality Alert that has been in place for nearly a week.
A brief plume of tropical moisture is indicated to move northward close to Kern County on Monday. I have increased cloudiness in the mountains that day an included a 20% chance for showers or thunderstorms. Weak low pressure just off the coast develops and then moves inland on Monday. By Tuesday that disturbance moves quickly to the northeast and out of our area, taking any chance for rain with it. Slightly cooler conditions will ensure Tuesday and Wednesday with highs close to 100°. In fact, Heat Wave #3 is set to start up again on this weekend with only a small moderation associated with the aforementioned weak disturbance.
By the end of next week and into the final weekend of July much hotter weather is expected with expansion of the upper level ridge. Highs should rebound into the 104 to 108 degree range. A big difference from our current conditions will be a noticeable increase in humidity levels. I'm predicting intense heat stress for that final weekend of July.
Chief Meteorologist MILES MUZIO- 6:51 PM July 20, 2017
Today's Record Temperatures