Area Forecast Discussion
Issued by NWS Sacramento, CA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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 
000
FXUS66 KSTO 230457
AFDSTO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
957 PM PDT WED MAY 22 2013

.SHORT TERM DISCUSSION...

UPPER LOW CONTINUES TO SPIN OVER WASHINGTON AND OREGON THIS
EVENING. THIS IS KEEPING A DRY...BUT COOL NORTHWEST FLOW OVER
NORCAL. THE BREEZY NORTH WINDS OF EARLIER TODAY HAVE DIMINISHED
AND LIGHT WINDS WILL PREVAIL FOR THE REST OF THE NIGHT.
TEMPERATURES AT 9 PM ARE GENERALLY IN THE LOW 60`S AND 50`S AT
VALLEY LOCATIONS. THESE READINGS ARE AROUND 5 DEGREES COOLER
VERSUS YESTERDAY AT THIS TIME. FORECASTED OVERNIGHT LOWS FROM THE
LOW 40`S TO LOW 50`S LOOK ON TRACK AND NO EVENING UPDATE WILL BE
NEEDED.

PREVIOUS DISCUSSION...

THE MODELS ARE IN GOOD AGREEMENT WITH THE UPPER-LEVEL TROUGH AXIS
MOVING EAST OF NORTHERN CALIFORNIA TONIGHT...WITH A NORTHWEST FLOW
ALOFT BEHIND THE TROUGH AXIS. THIS WILL KEEP A COOL AIRMASS OVER THE
NORTHERN CALIFORNIA INTERIOR...WITH TEMPERATURES REMAINING A FEW
DEGREES BELOW NORMAL THROUGH FRIDAY.

SOME MODERATION OF THE AIRMASS IS EXPECTED BY THE END OF THE WEEK
AND OVER THE WEEKEND AS THE PACNW LOW WEAKENS AND LIFTS OUT TO THE
NORTHEAST. HOWEVER...IT/S LOOKING LIKE MORE ENERGY WILL WORK
ACROSS THE PACIFIC EARLY NEXT WEEK REINFORCING THE TROUGH ALONG
THE WEST COAST AND PERHAPS BRINGING A BETTER CHANCE OF SHOWERS
FURTHER SOUTH. STAY TUNED.

&&

.AVIATION...

VFR CONDITIONS CONTINUE NEXT 24 HOURS FOR INTERIOR NORCAL TAF SITES.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

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