Weaker winds will occur across the region this weekend, with fair weather. Patchy dense fog may occur near the coast on Sunday and Monday mornings. High pressure will strengthen over the area into next week, bringing higher temperatures and stronger offshore winds. Santa Ana winds will strenghten across the region for Monday and Tuesday with weak to locally moderate strength expected. The area of high pressure looks to stick around into the end of the week, keeping our weather pattern warm and dry as we move into the middle of the month.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
Variable high clouds but no low clouds again this evening. Sfc pressure gradients remain weakly offshore and winds are mostly light with no locations reporting gusts over 20 mph in the last hour. Temperatures are generally a little lower than at this time yesterday west of the mtns, and a little higher in the mtns and deserts.
From previous discussion, The pressure gradient will weaken further and turn onshore for Saturday, leading to similar temperatures to those of today. This slow onshore push will bring more humid air ashore, leading to a better chance of fog near the coast by Saturday night into Sunday morning. Some of the fog may be dense (near 1/4 - 1/2 mile visibility at times), which may impact airport travel. An area of high pressure currently off the coast, will begin to expand eastward over our region for Sunday into early next week. Due to this, Sunday will be the beginning of a warming trend across Southern California. The greatest warming will be felt of the lower deserts and valleys west of the mountains with highs reaching into the upper 70s.
The high expands further eastward over the area by Monday. Models seem to have less of a handle on any fog development on this day, but the question is whether the marine layer will be deep enough for another day of dense fog. Offshore flow will strengthen for Monday into Tuesday. Confidence has increased slightly from previous forecasts, with a weak to locally moderate offshore wind event becoming increasingly likely. Winds were adjusted up somewhat across the region during this time to reflect this increasing confidence in widespread wind gusts near 25-35 MPH, locally near 45 MPH in the mountains. Wind speeds and overall direction will become more clear in the coming days as we continue to forecast the exact placement of the area of high pressure near the region.
NBM chances for high temperatures over 85 degrees increase to 20-50% by Tuesday through Friday of next week. There is higher confidence that many valley west of the mountains and lower deserts to see highs in the 80s, which would be 10-15 degrees above normal. Weak offshore flow will prevail during this period as well. The offshore pattern and the high's position over the area will give a more detailed temperature forecast in the coming days. Low temperatures will also be above average, so not as chilly out there as well. The area of high pressure will likely stick around through much of next week, with slight variations on its strength and location by next weekend. Whatever the exact outcome, expect warm and dry weather as we go into the middle of the month.
060330z. Mostly clear skies and VFR conditions are expected through Sat evening. 30-40% chance patchy FG at the immediate coastline and over nearshore waters after 03Z Sun.
No hazardous marine conditions are expected through Wednesday.
Very high tides continue each morning though this weekend. Otherwise, no beach hazards expected through Wednesday.
Ca, None. PZ, None.
