Scientific Forecaster Discussion
Area forecast discussion
National Weather Service San Joaquin Valley - Hanford California
346 am PST Tuesday Dec 10 2013
clear and cold conditions to continue for the next several days.
Sub-freezing temperatures across the San Joaquin Valley over the
next few late night through morning hours. A gradual warming trend
will bring temperatures up to seasonal norms by the end of the week.
Discussion...a long wave trough continues to provide very cold
temperatures to much of the Continental U.S. This morning. Elsewhere...an
upper low is spinning off the northern Baja California coast with an upper
ridge off the West Coast extending up over the Gulf of Alaska.
Strong surface high pressure over the Great Basin is resulting
in an offshore flow pattern. Gusty winds continue to affect the
passes in the Kern County mountains. Gusts to around 40 miles per hour will
be possible through the morning...notably along I-5 through and
below the Grapevine...Highway 58 west of Tehachapi and in the vicinity
of Bear Valley Springs. The offshore flow pattern will remain in
place through the week creating breezy to gusty winds at times for
these same areas. Little to no wind is occurring down in the San
Joaquin Valley and Kern County desert...where another night of sub
freezing temperatures is underway. Most rural areas in the sjv are
currently below 28 degrees and will bottom out in the lower to middle
20s later this morning. Some areas in the Kern County desert will
again fall to the middle to upper teens. A hard freeze warning remains
in effect for the central and southern San Joaquin Valley through
Wednesday morning as only a slight modification of the air mass is
expected Tuesday night. The aforementioned upper ridge will shift
over the West Coast on Wednesday followed by a trough over the
pacnw on Thursday. Upper ridging is then expected to prevail next
weekend into early next week. Dry conditions will continue with a
gradual warming trend...resulting in slightly above normal temperatures
by the end of the weekend.
gusty offshore winds to 35 kts miles per hour through the Kern County mountain
passes until noon Tuesday. Otherwise VFR conditions expected across
the central California interior for the next 24 hours.
Air quality issues...
on Tuesday December 10 2013... fireplace/wood stove burning is
prohibited in Fresno County.
Further information is available at valleyair.Org
The level of certainty for days 1 and 2 is high.
The level of certainty for days 3 through 7 is medium.
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.
site date hi_max:year lo_max:year hi_min:year lo_min:year
Kfat 12-10 74:1939 38:1972 58:1937 26:1951
kfat 12-11 69:1933 39:1932 56:1937 25:1972
kfat 12-12 69:1969 40:1932 55:1929 18:1932
Kbfl 12-10 85:1912 41:1972 53:1937 24:1923
kbfl 12-11 81:1912 35:1932 58:1937 24:1923
kbfl 12-12 75:1913 43:1932 53:1893 20:1901
hard freeze warning until 8 am PST Wednesday caz089>092.