Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 281605
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
905 AM PDT TUE JUN 28 2016

.SYNOPSIS...
Hot and mainly dry weather this week. A few late day thunderstorms
possible mid-week over the mountains.

&&

.DISCUSSION...
Not counting on the Delta Breeze to bring any cooling today and have
updated a few of the max temps for today to be about as warm or a
degree or two warmer than Mon. The 24 hr temp trend this morning
showed some cooling Nrn Sac Vly and this could be the reflection of
the upper trof nearing 130W and capping 5H heights over the far Nrn
zones. However...for the rest of the CWA...the lack of a Delta
Breeze and the strength of the 4-Corners High remain the dominating
factors with the 24 hr trend this morning showing a degree or two of
warming. With the very shallow marine layer even the SW wind will
not have sufficient "freon" to bring cooling today. Similar to
Mon...light NW winds at 925 mbs are expected through the afternoon
which also suggests a persistent wx regime. The addition of a degree
or two of warming puts DTS in the chance of tying the record max for
the date...which we have highlighted in the latest SM post. The other
record sites are expected to fall short. The table below offers
additional info on max temps for the rest of the month.

    June 28th       June 29th       June 30th

RDD  108 (2013)     108 (2013)      113 (2015)
     111 (1918)
RBL  112 (1977)     114 (1950)      113 (2015)
DTS  108 (2009)     107 (2013)      112 (1934)
SAC  108 (2009)     107 (2013)      109 (1950)
MYV  111 (2009)
SCK  110 (2009)     106 (2013)      110 (1972)
MOD  111 (2009)     109 (2009)      108 (1950)

The short-wave along the SErn CA/Srn NV border is another feature to
be monitored as it works its way Nwd today and Wed...bringing some
monsoonal moisture with it and the chance of T-storms...mainly S of
Tahoe. Most of the activity should be E of the Sierra Crest. Late
Wed and Thu the aforementioned upper trof is expected to weaken the
ridge over Norcal initiating some minor cooling and continuing a
small chance of thunder over a portion of the mtns...although
moisture is lacking.   JHM

&&

.EXTENDED DISCUSSION (SATURDAY THROUGH TUESDAY)...
A broad upper level trough will remain situated along the West
Coast this upcoming weekend and into early next week. Dry weather
is expected through this time period, with seasonal temperatures
(low 90s across the Valley) and stronger onshore flow through the
Delta. Dang

&&

.AVIATION...
VFR conditions expected for the terminals during the next 24 hour
period. Light wind shifts are expected for the Sacramento area and
in the northern valley overnight.

&&

.STO Watches/Warnings/Advisories...None.

&&

$$


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