HAPPINESS

IS A WARM CUP

September 25, 2021, 3:02 PM PDT

Southern California Overview:

A cooler weather pattern will continue into early next week as a couple of upper lows move through the region. Overnight low clouds and fog will become more widespread across the coast and valleys. A warming trend is expected the latter half of next week as high pressure returns and onshore flow weakens.

United States Overview:

There is a Marginal Risk of excessive rainfall over parts of the Southwest and the Northeast through Sunday morning. Temperatures will be 10 to 20 degrees above average over parts of the Northern/Central Plains, Great Basin, and Northern Rockies.

“El Cordonazo” or “The Lash of St. Francis”, an actual tropical storm hit Southern California on this day and on 9/26 and caused the greatest September rainfall ever. The storm lost hurricane status shortly before moving onshore at San Pedro at tropical storm strength. Torrential rains hit LA with 5.42 inches in 24 hours. Mt. Wilson received 11.60 inches. Both of these amounts are also records for the entire month of September. Nearly seven inches fell in three hours at Indio from one thunderstorm. 9.65 inches fell at Raywood Flat and 1.51 inches fell in Palm Springs. 2.81 inches fell in Santa Ana, the greatest daily amount on record for September. 45 were killed in floods all over Southern California, and 48 more were killed at sea in estimated seas of 40 feet. $2 million damage occurred to structures along the coast and to crops. The eastern Coachella Valley was under two feet of water. Californians were generally unprepared and were alerted to their vulnerability to tropical storms. In response, the weather bureau established a forecast office for Southern California, which began operations in February of 1940.