INTERAGENCY FIRE WEATHER CENTER PREDICTIVE SERVICES UNIT

 

MONDAY, JULY 27, 2015

SOUTHERN CALIFORNIA GEOGRAPHICAL AREA COORDINATION CENTER

RIVERSIDE, CALIFORNIA

Temperatures will be near to a little below normal today as a Pacific trough over the West Coast moves eastward. Maximum temperatures will be in the 70s to low 80s across the mountains with mid 80s to mid 90s in the valleys. The marine layer has shrunk to around 1,000 feet across Central California, but it has deepened to around 2,500 feet across Southern California this morning. Strong high pressure over Texas will shift slowly westward causing the marine layer to shrink Tuesday and it may be completely gone by Wednesday or Thursday. The strengthening high pressure area will also bring a warming trend to much of the region Tuesday through Friday. Most inland valley and foothill locations will see temperatures over the 100 degree mark by Wednesday. Minimum humidity will be mainly in the 12% to 25% range above the marine layer through Tuesday, except it will be in the single digits across the deserts. Scattered showers and thunderstorms will form mainly over the mountains and deserts of Southern California starting Wednesday and then spread northward to include the Sierra Thursday. The shower and thunderstorm activity will decrease starting Sunday, with isolated activity confined to the mountains and deserts. Temperatures will cool a little this weekend as the strong high pressure area shifts slowly back to the east. END/Shameson

 

For addition fuels and weather information, including the Santa Ana Wildfire Threat Index, please visit:

 

http://gacc.nifc.gov/oscc/predictive/weather/index.htm