Forcasting Rio vista vs. San Luis res.

MikeAshworth · Joined: 27 Jun 2000 Posts: 3

To Mike Godsey:

I understand that these sites work with a deep marine layer, why does Rio blow before San Luis or vice versa. What other conditions besides troughs and temperature differences (especially a cooling trend in the valley) affect these conditions?

Also, any chance of forcasting for Rauls or San Clemente.

Thanks,

Mike A. in San Diego

goinoff · Joined: 01 Feb 1998 Posts: 144

Most of the time its actually fairly simple:

Check out hourly pressure at:

http://www.wrh.noaa.gov/afos/SFO/SWR/SFOSWRCA

Oneill Forebay:

Check Watsonville -> San Joaquin Valley (Hanford,Modesto,etc.) pressure.

For Delta:

Check San Fran Airport -> Sacramento AirPort pressure.

General pressure guidelines:

.04 - .07 5.8 & up
.08 - .11 5.0 - 5.5 conditions
.12 - .19 4.2 - 5.0 conditions
.20 or > Bring dinky shit

The pressure can be killer between SF & Sac while its sucking eggs from Wat - San Joaquin. That is why one sometimes blows and not the other...

Also, read:

http://www.wrh.noaa.gov/afos/SFO/AFD/SFOAFDMTR