26/239 AM.
It will be cool today with mostly cloudy skies turning partly cloudy in the afternoon. There is a slight chc of a shower this morning, otherwise it will be dry through at least Wednesday morning. Below normal temperatures will continue through the middle of next week. Another weak storm is possible later Wednesday or Thursday.
(tdy-Tue), 26/951 AM.
***UPDATE***
Can't rule out a light shower though the area today mostly over he mountains. Otherwise nor major changes to the forecast.
***From Previous Discussion***
The trof that brought ocnl lgt rain to the area is heading east and out of the area this morning. There is still enough weak lift and moisture to keep a slgt chc of showers in the forecast for this morning. Rainfall amounts, if any, will be under a tenth of an inch and more likely just a trace. Skies will start out cloudy but a clearing trend will start later in the morning and by after skies should be partly cloudy. Hgts will be around 556 dam today which is well below the normal of 574 dam. As a result max temps will end up 5 to 10 degrees blo normal and only in the mid and upper 60s across the csts/vlys. Westerly flow setting up in the wake of the trof will bring near advisory level gusts to the Antelope Vly and its foothills.
Benign weather is on tap for Monday as Srn CA will sit at the base of a harmless pos tilt trof with 564 dam hgts. Skies will be, at worst, partly cloudy. Lots of late April sunshine will boost temps 2 to 4 degrees. Max temps will remain blo normals.
High pressure building into the interior will produce weak offshore flow on Tuesday. Probably not even enough to produce any canyon winds. At the upper levels Srn CA will be under the very top of a ridge originating from an upper high well to the south. Hgts will be a more April like 573 dam. The increase in hgts, mostly sunny skies and weak offshore flow will all mix together to produce 4 to 8 degrees of warming across the area. Look for max temps mostly in the upper 60s and 70s or pretty close to normals.
(Wed-Sat), 26/239 AM.
The marine layer may make a bit of a comeback on Wednesday morning and some of the csts may be covered by stratus. At the upper levels there is better mdl agreement and it is likely that a cutoff low will pinch off and migrate over of the ocean. This will keep the area dry. Another 1 to 2 degrees of warming will bring max temps up to seasonal normals.
It looks like forecast solution has settled on taking the upper low to the SE and swinging it just under San Diego. This path pretty much eliminates the chc of showers for the 4 county forecast area with only a slim chc of showers over the eastern San Gabriels. This path will also take most of the clouds with it. Hgts will rise as the low pushes away and most areas will see a few degrees of warming.
Upper level ridging and high pressure should dominate the forecast for Fri and Sat. The sfc flow will remain onshore both to the north and east so there will not be too big a warm up. Coastal low clouds are also likely each morning. If this forecast holds together there will be 1 or 2 degrees of warming each day with max temps coming in a few degrees over normal.
26/1704z.
At 1700Z at KLAX, there was no marine layer nor an inversion.
Overall, moderate confidence in 18Z TAF package. Through the period a SCT-BKN040-060 deck is anticipated at all sites. There is a 20-30% chance of brief periods of MVFR CIGs.
KLAX, Moderate confidence in 18Z TAF. There is a 20-30% chance of brief periods of MVFR CIGs through the period. No significant easterly wind component is expected.
KBUR, Moderate confidence in 18Z TAF. There is a 20-30% chance of brief periods of MVFR CIGs through the period.
26/712 AM.
For the Outer Waters, moderate to high confidence in current forecast. Today through Monday morning, high confidence in winds and seas remaining below Small Craft Advisory (SCA) levels. For Monday afternoon through Tuesday, there is a 40-60% chance of SCA level winds. For Wednesday through Thursday, there is 60-80% chance of SCA level winds and a 30-40% chance of SCA level seas.
For the Inner Waters north of Point Sal, moderate to high confidence in current forecast. Today through Monday morning, high confidence in winds and seas remaining below SCA level. From Monday afternoon through Thursday, there is a 40-50% chance of SCA level winds in the afternoon and evening hours.
For the Inner Waters south of Point Conception, moderate to high confidence in current forecast. Through this evening, high confidence in SCA level winds across PZZ650 with a 30-40% chance of SCA level winds across PZZ655. For Monday through Thursday, there will be 40-60% chance of SCA level winds across the western half of the Santa Barbara Channel with high confidence in winds and seas remaining below SCA levels elsewhere.
Ca, NONE. PZ, Small Craft Advisory in effect from 3 PM this afternoon to 9 PM PDT this evening for zone 650. (See LAXMWWLOX).
