Mariposa projected high temperature for Thursday: 99 degrees
Oakhurst projected high temperature for Thursday: 99 degrees
Yosemite Valley projected high temperature for Thursday: 91 degrees
August 13, 2019 - The National Weather Service Hanford Office reports an Excessive Heat Watch is in effect for the San Joaquin Valley and west side hills from 11:00 A.M. until 8:00 P.M. Thursday.
High temperatures will be 104 to 108 degrees in the San Joaquin Valley and west side hills Thursday afternoon.
An Excessive Heat Watch means that a prolonged period of dangerously hot temperatures is expected. Heat related illnesses, such as heat exhaustion and heat stroke will be possible.
Drink plenty of fluids, stay out of the sun, and remain in an air-conditioned room.
Area Forecast Discussion National Weather Service Hanford CA 147 AM PDT Tue Aug 13 2019 .SYNOPSIS... Widespread triple digit heat is expected in the San Joaquin Valley Today through Friday with the warmest day being Thursday. Temperatures will trend downward this weekend. Dry weather will persist across Central California through at least the next seven days. && .DISCUSSION... An area of high pressure aloft over the South Central United States will retrograde westward tonight through Tuesday night. This upper-level area of high pressure will become anchored over the Desert Southwest Wednesday and will remain in place over the Desert Southwest Wednesday night through Friday. Widespread triple digit heat is expected in the San Joaquin Valley today through Friday. Thursday looks like it will be the hottest day of the week with high temperatures Thursday afternoon throughout Central California around ten degrees above normal for this time of year. In addition, high temperatures Thursday afternoon in Fresno and Bakersfield should be within a few degrees of the daily records for maximum temperatures in Fresno and Bakersfield. The current record for maximum temperature ever observed in Fresno on August 15th is 109 degrees, set in 1920. The current record for maximum temperature ever observed in Bakersfield on August 15th is 110 degrees, set in 1906. An Excessive Heat Watch has been issued for Thursday afternoon and early evening. An upper-level trough of low pressure near the coast of the Pacific Northwest will move southward Friday afternoon and night. This trough of low pressure aloft should remain in the general vicinity of the northern coast of California this weekend. This will allow temperatures to return to seasonal values this weekend. Maximum temperatures Saturday afternoon throughout Central California should be around ten degrees lower than Friday afternoon. Dry weather will persist through at least the next seven days.
Source: NWS
