Mariposa projected high temperature for Tuesday: 96 degrees
Oakhurst projected high temperature for Tuesday: 97 degrees
Yosemite Valley projected high temperature for Tuesday: 87 degrees
June 11, 2019 - The National Weather Service Hanford Office reports widespread triple digit heat is likely in the San Joaquin Valley this afternoon.
Prolonged exposure to triple digit heat can pose a health risk to the elderly, persons with respiratory ailments and anyone who is not yet acclimated to hot weather.
If you’re going to be outdoors during the hottest time of the day (between 1 pm and 6 pm), avoid strenuous exercise, stay hydrated and wear light colored, loose fitting clothing.
Remember that going from hot air temperatures into cold water in area rivers could cause shock to the body and lead to drowning.
Use caution if entering local waterways and remember to wear a life vest.
Area Forecast Discussion National Weather Service Hanford CA 310 AM PDT Tue Jun 11 2019 .SYNOPSIS...Triple digit heat can be expected in the San Joaquin Valley, lower foothills and the Kern county desert through Wednesday. Temperatures will trend slightly lower Thursday through the weekend. Isolated afternoon thunderstorms are possible near the Sierra crest beginning Thursday. Otherwise dry weather will prevail over the district for the next several days. && .DISCUSSION...Residents of the central California interior are getting a preview of just how hot the weather can get and it`s not even officially Summer yet. The Summer solstice is still ten days away. As of this writing, temperatures are trending a little higher over much of the CWA compared to 24 hours ago. That`s a good sign that today will be a little hotter than yesterday in most locations and could end up as our hottest day yet this year. High temperature records will be challenged today in many San Joaquin Valley locations. The record high of 106 degrees in Fresno and 109 degrees in Bakersfield for today were last established in 1979. High temperatures will again be over the century mark Wednesday in the San Joaquin Valley and most lower foothill locations as well as the Kern county desert. All of this exceptionally warm/hot weather has accelerated the rate of melting snow over the higher elevations of the Sierra. As this snowmelt process continues, it will bring a rise in water levels on many rivers in the foothills and higher elevations of the Sierra during the next 48 hours along with the possibility of minor flooding. The CNRFC expects the Merced River in Yosemite National Park to crest slightly above Flood stage the next couple of nights. Bottom line...rivers are not a safe place to be. They`re fed by melting snow which makes their waters dangerously cold. The other hazard of these deep, cold rivers are the swift currents in them. Even the most experienced swimmer cannot combat the strong flow of these rivers, so be forewarned. Now for the broader weather picture. If it`s cooling relief you`re looking for, it`s going to be minimal later this week as the upper level ridge of high pressure that`s currently anchored along the West coast finally breaks down and is replaced with a weak upper level trough over the Golden State on Thursday. Although moisture with this trough is limited, moisture from melting snow over the high Sierra combined with some lift from this trough could generate isolated afternoon thunderstorms near the Sierra crest each day in the 3 to 7 day period. Otherwise, the overall theme of the weather will be dry. High temperatures will be slightly cooler over the mountains and just not as hot in the lower elevations such as the San Joaquin Valley and the Kern county desert during this period. The GFS is trending temperatures toward climatology compared to the ECM beginning Saturday, but don`t let this fool you. High temperatures will still run several degrees above normal for the middle of June. During this current hot spell, please be mindful of heat safety...wear light colored, loose fitting clothing, stay hydrated and limit your time outdoors during the hottest part of the day.Source: NWS
