31/1153 PM.
Warm and dry conditions can be expected through most of this week. There will be some coastal low clouds and fog at times, but otherwise skies will remain mostly clear. There will be gusty onshore winds through most of the week.
(tdy-Wed), 01/1220 AM.
June arrives with its standard unexciting weather. At the upper levels there will be weak saggy broad troffing. Hgts will be near 586 dam which is very close to normal. Onshore flow will prevail through the period strongest to the east and in the afternoons.
The marine layer is 900 ft deep but low clouds are not forming very quickly. By dawn low clouds will likely cover the coasts from Long Beach to Oxnard as well as portions of the Central Coast. The San Gabriel Vly also have have some low clouds. Low clouds will begin to arrive earlier and penetrate deeper into the vlys starting tonight as the onshore flow increases and an eddy spins up. Tuesday night and Wednesday will have a similar cloud pattern. With the afternoon onshore push near 8 mb in the afternoon it is likely that some beaches will not clear.
The strong W to E pressure gradient will drive stronger than normal sea breezes as well as gusty winds in the Antelope Vly. There will be a little north push in the mtns Tuesday night but any winds will be under advisory criteria.
Max temps will fall across the csts and vlys today and Tuesday as the onshore flow increases. Today's max temps will remain above normal, but Tuesday's cooling will bring most csts/vly max temps to a few degrees blo normal. Mdls showing some warming on Wednesday due to the north flow, but this may well not work out depending on how strong the eddy and marine layer is.
(Thu-Sun), 01/1229 AM.
A weak ridge will nose in from the west on Thu and Fri. Hgts will be near 585 dam. Hgts will fall over the weekend as a trof originating from a decent sized upper low that will move into the PACNW. There will be mdt to strong onshore flow each day with a peak on Friday.
Night through morning low clouds and fog will continue for all 4 days. Some beaches may not clear until later in the afternoon on Thu, Sat and Sun. Friday looks to be a day of June Gloom due to the strong onshore flow both to the N and E. It is likely that much of the nearshore area will stay cloudy and cool.
There is a 30-50% chance of advisory level winds across interior portions Wednesday evening. This includes: Salinas Valley, I-5 corridor, & western Santa Ynez mtn range. Stronger than normal sea breezes as well as gusty westerly winds in the Antelope Vly will also occur due to the strong onshore pressure gradients.
The ridge will bring some warming to the csts on Thursday, but then the lowering hgts and strong onshore flow will lead to 3 days of cooling Fri-Sun. Weekend temps will mostly be in the 70s across the csts/vlys with upper 60s at the beaches and lower 80s in the warmest vly locations. These max temps are mostly 2 to 4 degrees blo normal.
01/1110z.
At 0832Z at KLAX, the marine layer was 900 feet deep. The inversion top was near 1700 feet with a temperature of 22 C.
High confidence in KPMD, KWJF, and KPRB.
Moderate Confidence in TAFs for KSBP, KSBA, KVNY where there is a 30 percent chc of IFR conds 13Z-17Z.
Moderate Confidence in TAFs for KOXR, KCMA and KBUR where there is a 30 percent chc of no low clouds. Also if low clouds do arrive the arrival and departure times could be off by +/- 1 hour.
Moderate confidence in TAFs for KSMO, KLGB and KLGB. The arrival and departure times of the low clouds could be off by +/- 1 hour
KLAX, Moderate confidence in TAF. Low clouds could arrive as late as 13Z. There is a 25 percent chc that VFR conds will not arrive until 18Z. High confidence that any east winds will stay under 8 knots.
KBUR, Moderate confidence in TAF with a 30 percent chance no low clouds. If low clouds do arrive there is a 30 percent chc of OVC008 conds. There is a 25 percent chc that VFR conds will not arrive until 17Z
01/127 AM.
For the Outer Waters from the Central Coast to San Nicolas Island, moderate to high confidence in current forecast. High confidence in a combination of at least Small Craft Advisory (SCA) level winds and seas through much of the coming week, initially through mid morning today. After a relative lull, SCA winds are likely to return Tuesday through Thursday, with a 40% chance of Gale force winds over portions of the outer waters Wednesday night through Thursday night. SCA seas of 10+ feet may linger Thursday into Friday.
For the Inner Waters north of Point Sal, moderate to high confidence in current forecast. After a relative lull, winds will increase to SCA levels Wednesday night through Thursday night, with a 20-30% chance of Gales Wednesday night and Thursday. Otherwise, SCA winds are likely to persist through Thursday night.
For the Inner Waters south of Point Conception, moderate to high confidence in current forecast. There is a 50 percent chance of SCA winds Wednesday late afternoon to night and again during the same time frame Thursday.
Ca, NONE. PZ, Small Craft Advisory in effect until 9 AM PDT this morning for zones 670-673-676. (See LAXMWWLOX).
