Area Forecast Discussion
Issued by NWS Sacramento, CA

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

FXUS66 KSTO 260357

857 PM PDT Mon May 25 2015

Gradually warmer temperatures this week with mainly mountain
showers and thunderstorms afternoons and evenings through the
middle of the week. High pressure dries things out by late in the
week, with high temperatures peaking at 5 to 10 degrees above


There is still some lingering shower activity near Chico that
will continue to dissipate through 10 pm. A decent delta breeze
will continue for most of the night. Low clouds in the western
delta this evening may spread locally into the Sacramento region
towards morning.

On Tuesday the low over the Pacific Northwest will move slightly
eastward. This should result in less precipitation over the
interior but still some isolated activity remaining over the
mountains for the afternoon and early evening hours.

The low does not moves that far from Tuesday into Wednesday so
expect similar chances for thunderstorms over the mountains.
Temperatures will also be warming up into the mid 80s to lower
90s by midweek...with continued warming on Thursday as a high
pressure ridge builds over west coast.


.Extended Discussion (Friday through Monday)

High pressure ridge will be centered across NorCal on Friday
making for what should be the warmest day of the period. Dry
weather is expected across the area with above normal afternoon
temperatures reaching into the upper 80s to mid 90s in the valley
and 60s to 70s in the mountains. Benign weather and mostly sunny
skies will continue through the weekend as high pressure remains
in control. As the ridge shifts east, increasing onshore flow will
cool temperatures a degree or two Saturday and a few more degrees
Sunday but still above normal for the end of May. Models hinting at
next system approaching NorCal by next Monday/Tuesday with a
chance for precip across the north, but substantial differences remain
this far out.         CEO



Generally VFR conditions expected for the next 24 hours. A few
showers and thunderstorms across higher terrain this evening and
again on Tuesday may lead to local MVFR restrictions. Locally
gusty winds will continue through the Delta with gusts to 35 kts.
MVFR cigs in the western delta may spread locally into the valley
after 10z.


.STO Watches/Warnings/Advisories...

$$ is the U.S. government's official web portal to all federal, state and local government web resources and services.