LOS ANGELES (CNS) – Temperatures in valley and mountain areas of the
Southland again will reach dangerous “excessive heat” levels today, fall
marginally during the week and rise anew next weekend, National Weather Service
forecasters said.
Highs will climb into triple digits thanks to a hot air mass resulting
from a ridge of high pressure over the Southwestern United States, and high
humidity levels will make it feel even hotter, according to the weather
service.
“Heat index values, which take into account the air temperature and
humidity, are expected to reach 105 degrees in many valley locations in Los
Angeles and Ventura counties … and to around 100 degrees in the lower
mountain elevations,” according to an NWS advisory.
“The combination of very hot temperatures and moderate humidity will
combine to create a dangerous situation in which heat illnesses are possible,”
it said.
An excessive heat warning, issued by the NWS to indicate health-
threatening conditions resulting from high heat and humidity, will be in effect
from 11 a.m. to 8 p.m. in the San Gabriel, San Fernando, and Santa Clarita
valleys, the L.A. County portion of both the San Gabriel and Santa Monica
mountains, and several areas of Ventura and Santa Barbara counties.
The weather service urged area residents to take precautions to avoid
heat-related illnesses, including: schedule any outdoor work for early morning
or evening; wear light, loose-fitting clothing; and drink plenty of water.
Anyone overcome by the heat should be moved into the shade, and 911 should be
called.
The NWS forecast highs today 79 at LAX; 80 in Avalon; 81 in Newport
Beach; 92 in downtown L.A.; 93 in Anaheim; 94 in Long Beach; 99 in San Gabriel;
100 in Burbank; 102 in Pasadena; 105 in Palmdale; 106 in Saugus and Lancaster;
and 108 in Woodland Hills. Highs are expected to fall by a few degrees on
Tuesday and again on Wednesday.
On Sunday, the mercury hit 98 in Sandberg in the Antelope Valley,
beating the record of 95 for an August 12 set in 2002, according to the NWS.
“There will be some cooling both Tuesday and Wednesday, but maximum
temperatures will remain above normal and further warming is now forecast for
next weekend,” according to an NWS advisory this morning.
Along with the heat, there is a chance of thunderstorms in mountain
areas and the Antelope Valley this afternoon and evening, according to the NWS.
“Any thunderstorms that develop would be capable of producing brief,
heavy rain, gusty winds, dangerous cloud-to-ground lightning and possible small
hail,” the agency said in an advisory.

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