Area forecast discussion National Weather Service San Joaquin Valley - Hanford California 345 am PDT Wednesday may 22 2013 Synopsis... an unseasonably cool low pressure area is over the Pacific northwest. This is bringing a much cooler onshore flow to central California...and temperatures today will be some 10 to 20 degrees lower than yesterday. Little change is expected Thursday...then a very slow warming trend into the weekend. However it now looks like below normal temperatures will prevail into early next week. && Discussion... deep 541dm 500 mb low is over or/WA...with axis extending south along the California coast. Temperatures this morning running 10-20 degrees cooler than yesterday and 1000-500 mb thickness plunging some 150 meters by this evening across central California. Gusty winds in the Kern Mountains/desert last evening into early this morning have diminished a bit...but will increase later this morning. No change to existing wad. Breezy in the sjv as well...with a few gusts around 30 miles per hour this afternoon...especially along I-5 corridor with patch blowing dust. Little change in the pattern expected Thursday with upper low q-stationary over the pacnw. Continue cool temperatures with afternoon and evening breezes across central California. 00z models in reasonably good agreement over the course of the next 7-8 days. The upper low will begin to gradually fill Friday with increasing heights across central California and a very slow warming trend beginning. 850 mb temperature profile from the ecm/GFS fairly close into 1st half of next week...with temperatures not exceeding 15 degs/c. This will keep maximum temperatures from getting any higher than low to middle 80s in the sjv through Tuesday...or 3-5 degrees below climatology. && Aviation... VFR conditions will prevail across the central California interior. Wind gusts of 35 knots or greater can be expected along the Sierra crest through 18z Wednesday and through and below the mountain passes of Kern County through 12z Thursday. && 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 05-22 104:1967 67:2010 71:1892 43:1909 kfat 05-23 103:1967 65:1916 71:2000 44:1960 kfat 05-24 103:1943 64:1916 68:2001 41:1953 Kbfl 05-22 102:2001 68:2010 73:1967 36:1903 kbfl 05-23 107:1904 67:2010 73:2000 44:1903 kbfl 05-24 107:1982 68:1980 76:1982 41:1916 && Hnx watches/warnings/advisories... Wind Advisory until 5 am PDT Thursday caz095-098-099. && $$ Public...Bingham AVN/fw...durfee synopsis...Bingham Weather.Gov/Hanford