Area forecast discussion
National Weather Service San Joaquin Valley - Hanford California
356 am PDT Monday may 20 2013
Synopsis...
high pressure will build over central California today with above
normal temperatures and mainly clear skies. An area of low pressure
will take hold over the Pacific northwest by Tuesday evening...and
linger through at least Thursday. A strengthening onshore flow will
bring cooler temperatures and a few clouds to central California
Wednesday and Thursday.
&&
Discussion...
a shortwave ridge will build into central California today. A neutral to
weak offshore flow will bring continued warming today as the thermal
trough shifts toward the coast. This warming will be shortlived
however as an upper trough approaches the pacnw. This trough is forecast
to stall and deepen over the pacnw. 500 mb heights are forecast to fall
below 550dm along the or/Washington border Wednesday. Across central California...850 mb
temperatures drop 10-12 degrees/c by Wednesday evening. In addn...the sfo-las surface gradient
increases to 16-18 mb/S Wednesday...for breezy conds in the sjv and
windy in the mtns/deserts...especially the Tehachapi Mountains through and below
passes and canyons. Models close in keeping any precipitation with this
trough mainly north of Lake Tahoe...so a dry forecast throughout.
The upper low is forecast to gradually fill beginning Friday...however
the trough axis across the West Coast states remains q-stationary through
the weekend. As the low weakens a slow warmup is set to begin Friday
with temperatures possibly rising back to near normal sun and/or Monday.
&&
Aviation...
VFR conditions will prevail across the central California interior.
&&
Air quality issues...
none.
&&
Certainty...
The level of certainty for days 1 and 2 is high.
The level of certainty for days 3 through 7 is high.
This information is provided as part of a trial project conducted
by the National Weather Service San Joaquin Valley - Hanford.
Certainty levels include low...medium...and high. Please visit
www.Weather.Gov/hnx/certainty.Php /all lower case/ for additional
information and/or to provide feedback.
&&
Climate...
records
site date hi_max:year lo_max:year hi_min:year lo_min:year
Kfat 05-20 102:1947 61:1921 71:1897 44:1962
kfat 05-21 104:1892 56:1933 69:2001 42:1975
kfat 05-22 104:1967 67:2010 71:1892 43:1909
Kbfl 05-20 103:1942 65:1923 70:2001 42:1902
kbfl 05-21 103:1988 65:1903 71:2001 42:1902
kbfl 05-22 102:2001 68:2010 73:1967 36:1903
&&
Hnx watches/warnings/advisories...
none.
&&
$$
Public...Bingham
AVN/fw...ds
synopsis...Bingham
Weather.Gov/Hanford
