Area Forecast Discussion
Issued by NWS Sacramento, CA
FXUS66 KSTO 272252
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
352 PM PDT THU AUG 27 2015
DRY WEATHER WITH DAYTIME TEMPERATURES NEAR TO A LITTLE ABOVE
NORMAL FRIDAY. COOLER TEMPERATURES BEGINNING OVER THE WEEKEND
WITH A CHANCE OF SHOWERS OVER THE NORTHERN PORTION OF THE STATE
SATURDAY. DRY WITH A LITTLE BELOW NORMAL DAYTIME HIGH TEMPERATURES
CONTINUING THROUGH MOST OF NEXT WEEK.
Clear skies and warm temperatures over NorCal this afternoon with
temperatures near 100 degrees for valleys. These readings are 10
degrees above normal. Not expecting much of a delta breeze this
evening and temperatures will likely be slow to cool.
Slightly cooler Friday...but still above normal. Clouds will
increase and there is likely to be at least a moderate late
afternoon/evening delta breeze as trough digs south off the coast.
Moisture plume of 1.00-1.50 pwat will swing over extreme northern
California Friday night. Shower chances will be over the northern
Sacramento valley...north of Yuba City-Chico. Best chances for
rain will be Redding northward and have increased chances to
Showers continuing into Saturday best chances northern valley
with trough swinging through the area. There will be slight
chances down to Sacramento during the morning...turning drier
late afternoon evening. Precipitation amounts may approach 0.25
inches north valley generally less than 0.10 inches elsewhere.
Temperatures will be much cooler with readings around 5 degrees
Drier and cool on Sunday with trough overhead. Onshore flow will
keep temps at least 5 degrees below average.
.EXTENDED DISCUSSION (Monday THROUGH Thursday)
Local area will remain under a large scale trough pattern into
mid-week. Expect dry conditions through Wednesday. Model
uncertainty remains towards the end of the week as another wave
moves onshore. This could bring another chance of precipitation
for the northern portion of the state. For now, have kept dry
forecasts until model differences can be resolved. High
temperatures will remain below normal through mid-week. IDM
VFR conditions thru the period for TAF sites. Generally light
winds under 10 kts or less. Wind gusts 15 to 20 kts across the
Delta region through tonight and again on Friday after 21Z.