| Day | Date | High/Low | Forecast |
| Fri | 14th | 53/45 | Mostly cloudy with intermittent light rain through early afternoon. Decreasing chance of rain thereafter. Partial clearing in the evening. |
| Sat | 15th | 62/47 | Some morning clouds possible; Otherwise, mostly sunny day. Some evening high clouds. |
| Sun | 16th | 65/50 | Partly cloudy day with mainly high clouds. Partly cloudy evening. |
| Mon | 17th | 62/47 | Partly to mostly cloudy day and breezy at times in the afternoon/evening. Slight chance of light showers late afternoon to early evening. |
| Tue | 18th | 64/48 | Sunny day. Clear evening. |
Synopsis
As of 3 PM, the rain was winding down across most of L.A. County. Unlike the storm that barreled through southern California in the previous 39 hours, today’s system was fairly tame. It lacked the high water vapor content and vigorous storm dynamics of its earlier sibling. Current storm totals, to my knowledge, have stayed around a tenth inch or less in the L.A. County lowlands (snow levels around 4000 feet). Yesterday’s storm, by comparison, dropped 1 – 1.5 inches in many lowland areas, not to mention the blustery conditions (UCLA peak gust 29 mph but other locales recording gusts around 40 mph). And finally, there was a weak, brief-lived tornado associated with yesterday’s cold front (in Pico Rivera). None of the remaining showers this afternoon should amount to anything (exception might be around/over the higher mountains…still insignificant amounts).
Mundane weather is expected over the weekend. High pressure aloft should promote mostly sunny weather tomorrow. Variable, mainly high clouds are forecast for Sunday, but dry weather will prevail. Daytime temperatures are expected to rise modestly (Sunday being the warmer day). Because no full fledged, off-shore flow is anticipated (some brisk northwest winds for some areas tomorrow though), temperatures, at best, might reach seasonable levels for some valley locales (valid Sunday).
A new storm is forecast to affect the state on Monday. The southern end of the storm should be weak. Depending on which computer model forecast is right, low level winds may be from the northwest when the cold front passes through. That would result in a “rain shadow” effect for much of L.A. County. It may wind up having characteristics of an “inside slider” trough (more wind storm than wet storm). I included a “slight chance” for light showers late Monday afternoon-early evening just in case low level winds turn out westerly. Still, lowland rainfall in L.A. County should be well under a tenth inch (maybe just trace amounts away from the mountains).
Dry and gradually warmer weather is expected thereafter through midweek. Slightly warmer than normal weather is expected around Wednesday. Dry but somewhat cooler weather is currently anticipated for the second half of next week (seasonable temperatures). At this point, no widespread return of marine layer clouds are forecast. Based on today’s model consensus, the next threat of wet weather in southern California may not come till the 27th (most predict a minor storm upon reaching the Southland).
Next issued forecast/synopsis may be on Monday, 17 March.