A less severe heat advisory was issued Friday for the inland cities of Escondido, San Marcos, Poway, La Mesa, El Cajon and Santee. Mid-90s daytime high temperatures were expected on Monday, before seeing the mercury ramp back to, or above, the 100-degree mark beginning on Tuesday.
As temperatures began rising Friday across San Diego County, officials warned residents to take extra precautions against the heat, especially when hiking on popular waterfall trails in the Cleveland National Forest.
National meteorologists predict heat indices to top out at 110 degrees Saturday and 105 degrees Friday, according to the National Weather Service. Sadly, in homes in areas with high crime rates, some of the people found dead in their homes from the heat had nailed their windows shut to protect themselves and their property. A less severe heat advisory for the remainder of Riverside County will extend from 11 a.m. Saturday until 9 p.m. Wednesday. Do not forget to check pavement temperatures by feeling it with the back of your hand - if it's hot for you, it's too hot for your pet to walk on.
NWS forecasters blamed the high heat on strong high pressure over Western States and said it would cause temperatures to be 12-18 degrees above normal this weekend, with the Antelope Valley boasting the warmest temperatures.
Phoenix will also be within reach of tying the record for consecutive days of high temperatures greater than 115 degrees, which is four days set in 1990.
"If you have an elderly or infirm neighbor without air conditioning, make sure that they get to a cooling center or other air conditioned space between the hours of 10:00 a.m. and 8:00 p.m.", he said. Signs of heat stroke include confusion, fainting, seizures, excessive sweating and high body temperature.
The Weather Service is also cautioning that snow melt from the Sierra will make rivers extra cold, which could make swimming more risky. In California, the heat will only ease just short of the coast.