Note time, wind direction & speed, & relative humidity (weathermen call dry High pressure “offshore flow”):

Weather Conditions for:
Los Angeles, Los Angeles International Airport, CA (KLAX)
Elev: 125 ft; Latitude: 33.93806; Longitude: -118.38889

Time

Relative

Wind

Wind

 

Humidity

Direction

Speed

(PST)

(%)

 

(mph)

27 Feb 3:53 pm PST

27

WSW 18
27 Feb 2:53 pm PST

16

SW 13
27 Feb 1:53 pm PST

13

WSW 13
27 Feb 12:53 pm PST

13

W 10
27 Feb 11:53 am PST

12

SE 5
27 Feb 10:53 am PST

12

CALM  
27 Feb 9:53 am PST

15

CALM  
27 Feb 8:53 am PST

18

NE 5
27 Feb 7:53 am PST

20

CALM  
27 Feb 6:53 am PST

23

VRBL 3
27 Feb 5:53 am PST

31

NNE 5
27 Feb 4:53 am PST

35

NNE 7
27 Feb 3:53 am PST

39

VRBL 3
27 Feb 2:53 am PST

40

NNE 8
27 Feb 1:53 am PST

52

ENE 3
27 Feb 12:53 am PST

57

CALM  
26 Feb 11:53 pm PST

53

CALM  

http://www.wrh.noaa.gov/mesowest/getobext.php?wfo=lox&sid=KLAX&num=72

So Cal Offshore Winds Map, Dr. Melanie Renfrew's drawing
sea-land-breeze