Mariposa projected high temperature for Tuesday: 98 degrees, Wednesday: 96 Degrees
Oakhurst projected high temperature for Tuesday: 99 degrees, Wednesday: 97 Degrees
Yosemite Valley projected high temperature for Tuesday: 104 degrees, Wednesday: 99 Degrees
June 29, 2021 - The National Weather Service Hanford Office reports widespread triple digit heat is expected in the San Joaquin Valley, Coastal Range, and Kern County desert this afternoon and Wednesday afternoon.Limit outdoor activities, reduce time in the sun, and drink plenty of water.
As always, never, ever leave a child or pet in an enclosed automobile.
Area Forecast Discussion National Weather Service Hanford CA 302 AM PDT Tue Jun 29 2021 .SYNOPSIS... Hot temperatures will continue through the week, with dangerous heat expected again this afternoon. Isolated to scattered showers and thunderstorms are expected over the mountains and desert today and Wednesday, with a small chance a storm could drift over the east side or south end of the San Joaquin Valley. Isolated storms continue over the Sierra Nevada each afternoon through the end of the week. && .DISCUSSION... Amplified ridge remains in control over the west with the strong high centered slightly eastward from yesterday over the British Columbia/Washington border. High temperatures on Monday were a little lower than forecast, partly due to cirrus clouds spreading downstream from from Sierra convection. While there is potential for the same occurrence today, afternoon highs across the lower elevations could reach 102-107 degrees, creating a high risk for heat related illness. Therefore, an Excessive Heat Warning is in effect today across the Kern County Desert, the San Joaquin Valley from Fresno County southward, and the adjacent West Side Hills. The upper ridge will gradually shift east the next few days with the center of the high becoming established over the more typical Four Corners region by this weekend. Temperatures will trend a little lower with afternoon highs generally around 4 to 8 degrees above climo. Afternoon highs in the SJ Valley later this week and weekend are generally expected to top out around the century mark. The other weather concern is the potential for thunderstorms over the next several days. Mid-level moisture continues to stream in from the east and high resolution models are showing an increase in mountain convection over yesterday. But the potential for dry lightning is still there as it may take another day for the lower atmosphere to moisten up. A Red Flag Warning for dry thunderstorms and gusty outflow winds is in effect for the Sierra Nevada and the Kern County Mountains today. It`s even possible a thunderstorm could drift over the east side or south end of the valley today. Also, cannot rule out a little nocturnal convection tonight into Wednesday morning. Similar coverage is expected on Wednesday but there are some signs of some drier air trying to push in from the coast. Moisture decreases after Wednesday with the thunderstorm threat trimming back to just the Sierra Thursday through Saturday. && .AVIATION... Local MVFR/IFR over the mountains due to isolated thunderstorms after 18Z Tuesday. Otherwise, VFR conditions will prevail across the central CA interior for at least the next 24 hours. && .AIR QUALITY ISSUES... On Tuesday June 29 2021...Unhealthy for sensitive groups in Kern County and Sequoia National Park and Forest. Further information is available at Valleyair.orgSource: NWS
