A very powerful winter storm produced additional heavy snow and high wind over portions Southern California still recovering from historic amounts of snowfall. This event eventually set multiple multi-day snowfall records, and required an extensive recovery period that lasted through March. Accumulating snow and high winds continued over into March 1st and 2nd, the totals and reports of which are reflected in a separate episode and event.

High Wind in SAN GORGONIO PASS NEAR BANNING, CALIFORNIA
From 28-FEB-23 14:00:00 to 28-FEB-23 23:59:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

High winds impacted the San Gorgonio Pass starting on the afternoon of February 28th and lasted overnight, with high winds continuing over into March 1st as well. A peak gust of 61 mph occurred at the Whitewater RAWS site on the 28th.

Winter Storm in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 27-FEB-23 15:00:00 to 28-FEB-23 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Additional rounds of light to moderate snow occurred in the San Bernardino County Mountains on February 27th, with more moderate to heavy snow occurring on February 28th. Numerous locations at elevations above 4000 feet received an additional 1 to 3 feet of snow during this time. Bear Mountain and Lake Arrowhead received upwards of 31 inches during the last two days of February. Crestline Yard and Mount Baldy received between 2 and 3 feet of snow during this time as well. Lower snow levels contributed to accumulating snow at elevations between 3000 and 4000 feet as well. A trained spotter reported moderate snow accumulating up to 1 inch at the top of the Cajon Pass. Accumulating snow was also reported near Devore during this time. Accumulating snow continued over into March 1st and 2nd, the totals and reports of which are reflected in a separate episode and event.

Winter Storm in RIVERSIDE COUNTY MOUNTAINS, CALIFORNIA
From 27-FEB-23 15:00:00 to 28-FEB-23 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Additional rounds of light to moderate snow occurred in the Riverside County Mountains on February 27th, with more moderate to heavy snow occurring on February 28th. Numerous locations at elevations above 4000 feet received an additional 1 to 2 feet of snow during this time. A trained spotter in Idyllwild reported total snowfall of 17 inches on February 28th. Snow carried over into March 1st as well, with storm total reports reflected in a separate episode.

Winter Storm in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 27-FEB-23 15:00:00 to 28-FEB-23 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Additional rounds of light to moderate snow occurred in the San Diego County Mountains on February 27th, with more moderate to heavy snow occurring on February 28th. A COOP observer on Palomar Mountain observed upwards of 20 inches of snow falling on the 28th. A COOP observer near Mount Laguna reported upwards of 10 inches of snow falling on the 28th. Snow carried over into March 1st, with storm totals reflected in a different event/episode.