FXUS66 KHNX 122110 AFDHNX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 210 PM PDT TUE MAR 12 2013 .SYNOPSIS... HIGH PRESSURE AND A WEAK OFFSHORE FLOW WILL PREVAIL THROUGH FRIDAY. A GRADUAL WARMING TREND WILL CONTINUE UNTIL THE HIGH PRESSURE AREA BEGINS TO WEAKEN SATURDAY. NOT QUITE AS WARM THIS WEEKEND...BUT TEMPERATURES WILL REMAIN SOME 10 DEGREES OR SO ABOVE NORMAL FOR MID MARCH. && .DISCUSSION... SATELLITE LOOPS AND SURFACE OBSERVATIONS SHOW A FEW HIGH CLOUDS OVER THE HANFORD WARNING/FORECAST AREA...OTHERWISE CLEAR SKIES PREVAIL ACROSS THE CENTRAL CALIFORNIA INTERIOR. AT 20Z /1300 PDT/...TEMPERATURES IN THE CENTRAL AND SOUTHERN SAN JOAQUIN VALLEY WERE IN THE MID 60S TO LOWER 70S...AND WERE MOSTLY RUNNING 2-6 DEGREES AHEAD OF 20Z MONDAY. THESE TEMPERATURES ALSO WERE ONLY 2-3 DEGREES BELOW SUNDAY/S HIGHS /EXCEPT BAKERSFIELD WHICH ALREADY HAS EXCEEDED MONDAY/S HIGH/...AND THE CENTRAL AND SOUTH VALLEY HIGHS ARE ON TRACK TO REACH THE MID 70S TO AROUND 80. DEWPOINTS ALSO ARE MOSTLY RUNNING AHEAD OF 24 HOURS AGO. GEOCAT SATELLITE LOOPS SHOWED THAT A NARROW BAND OF FOG AGAIN FORMED THIS MORNING IN THE MIDDLE OF THE SAN JOAQUIN VALLEY WEST OF THE HIGHWAY 99 CORRIDOR. ALTHOUGH THE FOG WAS NOT AS DENSE OR AS WIDESPREAD AS MONDAY MORNING...THE HIGHER DEWPOINTS THIS AFTERNOON SUGGEST THAT SOME LIGHT FOG MAY REDEVELOP TOWARD DAYBREAK TUESDAY AND HAVE ADDED PATCHY FOG WEST OF THE HIGHWAY 99 CORRIDOR FROM 10-16Z /0300-0900 PDT TUESDAY/. THE UPPER-LEVEL RIDGE IS FORECAST TO CONTINUE BUILDING INTO CALIFORNIA THROUGH AT LEAST THURSDAY...WITH TEMPERATURES WARMING WELL ABOVE NORMAL FOR THE LATTER HALF OF THE WEEK. 500-MB HEIGHTS OVER THE CENTRAL CALIFORNIA INTERIOR ARE FORECAST TO EXCEED 5820 METERS WEDNESDAY...AND THE 5820-METER 500-MB HEIGHT LINE REMAINS NORTH OF FRESNO COUNTY THURSDAY. THE 12Z GFS AND ECMWF AND THE 18Z NAM-12 FORECAST 850-MB TEMPERATURES OVER FRESNO TO PEAK BETWEEN 16.5-17.5 C ON THURSDAY. BASED ON PAST EXPERIENCE... THESE 850-MB TEMPERATURES WOULD CORRESPOND TO HIGH TEMPERATURES IN THE LOWER TO MID 80S. THE RECORD HIGH TEMPERATURE FOR FRESNO FOR THURSDAY /MARCH 14TH/ IS 83 DEGREES...SET IN 2007. THE FORECAST HIGH FOR FRESNO ON THE 14TH IS 84 DEGREES...WHICH WOULD BREAK THE RECORD. THE FORECAST HIGH FOR BAKERSFIELD ALSO IS 84 DEGREES...WHICH WOULD TIE FOR THE 4TH WARMEST MARCH 14TH ON RECORD. THE RECORD FOR MARCH 14TH AT BAKERSFIELD IS 88 DEGREES...SET IN 1916. /SECOND PLACE IS 85 DEGREES...IN 1934 AND 2004...FOLLOWED BY 84 DEGREES IN 1994 AND 2007./ AN UPPER-LEVEL TROUGH ROTATING AROUND A LOW OVER SOUTHWESTERN ALASKA IS FORECAST TO FLATTEN THE RIDGE AND PUSH IT INLAND FRIDAY. THE MODELS HAVE SLIGHT COOLING FRIDAY...THEN STRONGER COOLING BEGINNING SATURDAY AS BOTH THE GFS AND ECMWF HAVE A STRONGER TROUGH MOVING THROUGH THE PACIFIC NORTHWEST AND DROPPING INTO THE GREAT BASIN SUNDAY. THE MODELS FORECAST AN UPPER-LEVEL SHORT-WAVE RIDGE TO MOVE OVER CALIFORNIA MONDAY WITH SLIGHT WARMING. THE ECMWF HAS ANOTHER TROUGH THAT APPROACHES CALIFORNIA MONDAY NIGHT BUT QUICKLY WEAKENS IT. THE GFS HAS A BETTER DEFINED TROUGH THAT MOVES INTO CALIFORNIA TUESDAY NIGHT AND WEDNESDAY. PER COORDINATION WITH WFO/S SACRAMENTO AND RENO HAVE ADDED SLIGHT CHANCE POPS TO THE YOSEMITE NATIONAL PARK AREA TUESDAY NIGHT. OTHERWISE...THE FORECAST IS DRY WITH TEMPERATURES EXPECTED TO REMAIN ABOVE NORMAL THROUGH AT LEAST NEXT TUESDAY. && .AVIATION... AREAS OF MORNING MVFR VISIBILITY IN MIST AND HAZE IN THE SAN JOAQUIN VALLEY. OTHERWISE...VFR CONDITIONS WILL PREVAIL ACROSS CENTRAL CALIFORNIA. && .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 03-12 84:1910 50:1952 55:2005 28:1950 KFAT 03-13 84:2007 53:1981 59:1932 31:1950 KFAT 03-14 83:2007 48:1975 55:1995 29:1944 KBFL 03-12 88:1910 51:2006 56:1979 25:1907 KBFL 03-13 88:2007 53:1969 59:1979 21:1907 KBFL 03-14 88:1916 53:1944 62:1900 28:1907 && .HNX WATCHES/WARNINGS/ADVISORIES... NONE. && $$ PUBLIC...SANGER AVN/FW...JEB SYNOPSIS...BINGHAM WEATHER.GOV/HANFORD  FXUS66 KHNX 041013 AFDHNX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 213 AM PST WED FEB 4 2015 .SYNOPSIS... A RIDGE OF HIGH PRESSURE WILL BRING DRY WEATHER AND ABOVE NORMAL AFTERNOON TEMPERATURES TO THE CENTRAL CALIFORNIA INTERIOR THROUGH AT LEAST THURSDAY WITH PATCHY LATE NIGHT AND MORNING FOG IN THE SAN JOAQUIN VALLEY. LOOK FOR INCREASING CLOUDS FRIDAY WITH A CHANCE OF RAIN AND HIGH ELEVATION SNOW BEGINNING FRIDAY NIGHT. && .DISCUSSION...GOES CLOUD THICKNESS SATELLITE IMAGERY AND GROUND OBSERVERS REPORT PATCHY DENSE FOG DOWN THE CENTER OF THE SAN JOAQUIN VALLEY. THE MOST DENSE FOG IS INDICATED FROM HANFORD SOUTH TO CORCORAN AND POINTS WEST. WILL KEEP A CLOSE EYE ON THE FOG DEVELOPMENT FOR A POTENTIAL ISSUANCE OF A DENSE FOG ADVISORY. MEANWHILE, WATER VAPOR SATELLITE IMAGES SHOW A LARGE AREA OF HIGH PRESSURE OVER CALIFORNIA AND A HUGE PLUME OF MOISTURE OUT OVER THE PACIFIC, NOW CROSSING 130W. FORECAST MODELS CONTINUE TO BRING THIS DEEP FETCH OF MOISTURE INTO NORTHERN CALIFORNIA THURSDAY NIGHT AND THEN FARTHER SOUTH INTO CENTRAL CALIFORNIA LATER FRIDAY AND ESPECIALLY FRIDAY NIGHT. FORECAST GRIDS HAVE BEEN UPDATED TO INCREASE PRECIPITATION CHANCES TO NEAR 100 PERCENT OVER THE NORTHERN PART OF THE FORECAST AREA. AS IS USUALLY THE CASE, ON SATURDAY FORECAST MODELS NOW SEEM TO HAVE A BETTER HANDLE ON THE TIMING OF IMPULSES MOVING INTO CALIFORNIA IN THE VERY MOIST FLOW. THE FIRST ARRIVES DURING THE ABOVE MENTIONED TIME PERIOD AND THEN LIFTS EAST ON SATURDAY. THE MAIN AFFECT WILL BE DECREASE IN RAIN INTENSITY AND COVERAGE SATURDAY AFTERNOON AND NIGHT. A SECONDARY AREA OF LOW PRESSURE IS THEN PROJECTED TO ARRIVE LATER SUNDAY AND BRING ANOTHER ROUND OF HEAVIER RAIN LASTING INTO EARLY MONDAY. THE MAIN GEOGRAPHICAL AREA AFFECTED LOOKS TO BE THE NORTH WITH AT LEAST SOME LIGHT PRECIPITATION AS FAR SOUTH AS KERN COUNTY. GIVEN THE FLOW PATTERN HOWEVER IT LOOKS LIKE THE KERN COUNTY DESERT WILL STAY DRY WITH THESE SYSTEMS. AFTER THE SECOND DISTURBANCE MOVES EAST OF THE AREA ON MONDAY, A RETURN TO DRY WEATHER WILL OCCUR AS FORECAST MODELS EITHER BUILD A STRONG RIDGE AS NOTED ON THE ECMWF MODEL, OR DIG A TROUGH OF LOW PRESSURE INTO THE GREAT BASIN AS DEPICTED BY THE GFS MODEL. EITHER WAY IS DRY FOR CENTRAL CALIFORNIA. AS FOR EXPECTED RAINFALL TOTALS, THE GFS MODEL BRINGS THE POTENTIAL FOR OVER 3 INCHES OF RAIN TO THE YOSEMITE AREA HOWEVER SNOW LEVELS WILL BE HIGH, AND WILL NOT LIKELY FALL TO LESS THAN 7500 FEET DURING THE EVENT. FOR AREAS FROM SEQUOIA PARK SOUTHWARD THE AMOUNT OF EXPECTED RAINFALL DROPS OFF DRAMATICALLY TO AROUND 0.75 INCHES AT GIANT FOREST TO AROUND 0.25 INCHES AT LAKE ISABELLA. && .AVIATION...IN THE SAN JOAQUIN VALLEY...LATE NIGHT AND EARLY MORNING WITH IFR IN MIST AND LOCAL LIFR IN FOG BETWEEN 09Z AND 18Z...OTHERWISE MVFR WITH LOCAL IFR IN HAZE. ELSEWHERE...VFR CONDITIONS EXPECTED ACROSS THE THE CENTRAL CA INTERIOR DURING THE NEXT 24 HOURS. && .AIR QUALITY ISSUES... ON WEDNESDAY FEBRUARY 4 2015... UNHEALTHY FOR SENSITIVE GROUPS IN FRESNO... KERN... KINGS... MADERA... MERCED AND TULARE COUNTIES. FIREPLACE/WOOD STOVE BURNING STATUS IS: NO BURNING UNLESS REGISTERED IN FRESNO... KERN... KINGS... MADERA... MERCED AND TULARE COUNTIES. FURTHER INFORMATION IS AVAILABLE AT VALLEYAIR.ORG && .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 02-04 74:2009 43:1899 54:1907 28:1988 KFAT 02-05 75:1930 42:1989 56:1978 24:1899 KFAT 02-06 73:1930 45:1989 52:1898 24:1899 KBFL 02-04 85:2009 46:1989 53:1996 26:1923 KBFL 02-05 87:1912 39:1989 61:1978 28:1989 KBFL 02-06 77:1930 45:1989 55:1978 27:1989 && .HNX WATCHES/WARNINGS/ADVISORIES... NONE. && $$ PUBLIC...DUDLEY AVN/FW...MV SYNOPSIS...WP WEATHER.GOV/HANFORD  FXUS66 KHNX 251106 AFDHNX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 406 AM PDT WED MAR 25 2015 .SYNOPSIS...A STRONG RIDGE OF HIGH PRESSURE WILL BUILD OVER THE AREA PROVIDING DRY WEATHER AND WELL ABOVE NORMAL TEMPERATURES THROUGH THE END OF THE WEEK. A WEAK PACIFIC DISTURBANCE WILL MOVE IN OVER THE WEEKEND AND BRING SLIGHT COOLING WITH TEMPERATURES REMAINING SEVERAL DEGREES ABOVE NORMAL INTO EARLY NEXT WEEK. && .DISCUSSION...SHORT WAVE TROUGH EXITING THE REGION THIS MORNING WITH A DRY NORTHWEST FLOW OVERHEAD. SURFACE PRESSURE GRADIENT IS RELAXING AND WINDS ACROSS THE KERN COUNTY MOUNTAINS AND DESERT ARE SUBSIDING AS EXPECTED. THE WIND ADVISORY WAS ALLOWED TO EXPIRE AT 2 AM BUT WILL CONTINUE TO SEE LOCAL GUSTS TO AROUND 30 MPH BELOW THE DESERT PASSES FOR A FEW MORE HOURS. GEOCAT SATELLITE IMAGERY IS SHOWING SOME UPSLOPE LOW CLOUDS ACROSS THE TEHACHAPI MOUNTAINS. THESE WILL LINGER INTO THE MORNING HOURS BUT SHOULD DIMINISH WITH AFTERNOON HEATING. AN AMPLIFYING UPPER RIDGE OFF THE COAST WILL BEGIN TO BUILD IN TODAY AND STRENGTHEN INTO THURSDAY. DRY CONDITIONS WILL PREVAIL WITH A CORRESPONDING WARMING TREND THROUGH THE END OF THE WEEK. TEMPERATURES WILL REBOUND BACK TO SEVERAL DEGREES ABOVE NORMAL TODAY...SURGE CONSIDERABLY WARMER ON THURSDAY...THEN CLIMB A BIT MORE ON FRIDAY AS THE RIDGE AXIS SHIFTS TO THE EAST. SOME RECORD HIGHS ARE LIKELY TO BE TIED OR BROKEN...ESPECIALLY ON FRIDAY AS MUCH OF THE CNTRL/SRN SAN JOAQUIN VALLEY IS FORECAST TO TOP OUT AROUND 90 DEGREES...AROUND 20 DEGREES ABOVE CLIMO. THERE IS STILL A FAIR AMOUNT OF MODEL UNCERTAINTY AS WE MOVE INTO THE WEEKEND BUT THE GENERAL IDEA IS FOR A PACIFIC TROUGH TO MOVE IN AND BRING SOME SLIGHT COOLING ALONG WITH BREEZY CONDITIONS. THE COOLING WILL BE MODEST AS HIGHS WILL STILL END UP AROUND 15 DEGREES ABOVE CLIMO. ENSEMBLE MEANS SUGGEST A ZONAL FLOW ALOFT DEVELOPING EARLY NEXT WEEK FOR LITTLE CHANGE IN TEMPERATURES. WEEKEND TROUGH LOOKS TO HAVE LIMITED MOISTURE BUT WILL CARRY A SLIGHT CHANCE OF SOME LIGHT PRECIPITATION OVER THE SOUTHERN SIERRA CREST ON SUNDAY. && .AVIATION... AREAS OF MVFR AND LOCAL IFR IN UPSLOPE CLOUDS ALONG VALLEY FACING SLOPES THROUGH 20Z WEDNESDAY. OTHERWISE...VFR CONDITIONS WILL PREVAIL ACROSS THE CENTRAL CALIFORNIA INTERIOR FOR THE NEXT 24 HOURS. && .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 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. && .CLIMATE... RECORDS SITE DATE HI_MAX:YEAR LO_MAX:YEAR HI_MIN:YEAR LO_MIN:YEAR KFAT 03-25 85:1997 52:1980 59:1896 32:1964 KFAT 03-26 87:1988 49:1991 57:1928 34:1942 KFAT 03-27 87:1986 52:1924 56:1930 31:1972 KBFL 03-25 90:1997 48:1977 59:1909 32:1907 KBFL 03-26 87:1997 52:1936 61:1971 21:1907 KBFL 03-27 90:1986 50:1991 57:1978 32:1908 && .HNX WATCHES/WARNINGS/ADVISORIES... NONE. && $$ PUBLIC...DCH AVN/FW...JEB SYNOPSIS...DCH WEATHER.GOV/HANFORD  FXUS66 KHNX 201053 AFDHNX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 253 AM PST WED JAN 20 2016 .SYNOPSIS... HIGH PRESSURE WILL BUILD OVER THE CENTRAL CALIFORNIA INTERIOR TODAY AND THURSDAY. DRY AND MAINLY CLEAR WEATHER WILL PREVAIL OVER ALL BUT THE SAN JOAQUIN VALLEY WERE BOUTS OF FOG WILL OCCUR. THE NEXT STORM SYSTEM WILL ARRIVE FRIDAY AND SATURDAY WITH RAIN AND MOUNTAIN SNOW. && .DISCUSSION...WITH HIGH PRESSURE BUILDING IN OVER CENTRAL CALIFORNIA ALONG WITH PLENTY OF WET GROUND, DENSE FOG HAS INDEED FORMED IN THE SAN JOAQUIN VALLEY AND WILL PERSIST THROUGH MID TO LATE MORNING. GEOCAT SATELLITE IMAGERY SHOWS AN INCREASING AREA OF LIFR (LIMITED INSTRUMENT FLIGHT RULES) VISIBILITY DOWN THE CENTER OF THE SJV AND IT IS EXPANDING. OUTSIDE THE SAN JOAQUIN VALLEY A MOSTLY SUNNY AND DRY DAY WILL OCCUR. FORECAST MODELS KEEP THE RIDGE OVER THE AREA THROUGH THURSDAY NIGHT BEFORE THE NEXT PACIFIC WEATHER SYSTEM APPROACHES FRIDAY. FORECAST MODELS CONTINUE TO SLOW THE ARRIVAL OF THIS FEATURE AND NOW ARE BRINGING THE INITIAL FRONTAL BAND INTO NORTHERN CALIFORNIA EARLY FRIDAY AND THEN ACROSS THE FORECAST AREA DURING THE DAY ON FRIDAY AS A WEAKENING ENTITY. A SECONDARY TROUGH OF LOW PRESSURE IS THEN FORECAST TO ARRIVE ON SATURDAY WITH ADDITIONAL ENERGY AND MOISTURE. LOOKING AT THE EXTENDED MODEL PROJECTIONS IT APPEARS THAT THIS WEEKEND'S SYSTEM MAY BE THE LAST IN THE LONG SERIES OF STORMS. MODELS THEN SHIFT THE MAIN JET STREAM TO THE NORTH NEXT WEEK AND THIS BRINGS THE STORM TRACK ACROSS THE PACIFIC NORTHWEST AND FAR NORTHERN CALIFORNIA. GIVEN THIS, THE SAN JOAQUIN VALLY COULD BE IN FOR AN EXTENDED PERIOD OF CLOUDS AND FOG WHILE THE REST OF THE AREA HAS DRY WEATHER AND MAINLY CLEAR SKIES. && .AVIATION... IN THE SAN JOAQUIN VALLEY...AREAS OF LIFE IN FOG BETWEEN 12Z-20Z WED AND 20Z WED. IN THE SOUTHERN SIERRA FOOTHILLS...AREAS OF LOW CLOUDS WITH MFR AND LOCAL IFR CONDITIONS UNTIL 18Z WED WITH A SLOW IMPROVEMENT TO VFR CONDITIONS THEREAFTER. IN THE SOUTHERN SIERRA NEVADA AND KERN MOUNTAINS...AREAS OF MOUNTAIN OBSCURATION WITH IFR CONDITIONS CAN BE EXPECTED THRU 18Z WED. IMPROVING INTO VFR CONDITIONS BY 20Z WED. VFR CONDITIONS WILL PREVAIL ACROSS THE KERN COUNTY DESERTS DURING THE NEXT 24 HOURS. && .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 MEDIUM. 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 01-20 72:1994 36:1937 55:1901 24:1963 KFAT 01-21 72:1994 39:1937 56:1896 19:1937 KFAT 01-22 70:1994 35:1962 52:1888 25:1945 KBFL 01-20 77:1912 40:1940 56:1969 21:1922 KBFL 01-21 79:1981 40:1937 60:1942 19:1937 KBFL 01-22 76:1981 38:1962 60:1981 19:1937 && .HNX WATCHES/WARNINGS/ADVISORIES... DENSE FOG ADVISORY UNTIL 10 AM PST THIS MORNING CAZ089>092. && $$ PUBLIC...DUDLEY AVN/FW...MV SYNOPSIS...DUDLEY WEATHER.GOV/HANFORD  FXUS66 KHNX 051111 AFDHNX Area Forecast Discussion National Weather Service San Joaquin Valley - Hanford CA 411 AM PDT Sat Nov 5 2016 .SYNOPSIS... Above normal temperatures and dry weather will prevail across central California this weekend and through the upcoming week. Otherwise, patchy fog will be possible throughout the San Joaquin Valley each morning. && .DISCUSSION...High pressure aloft remains in control with clear skies and light winds prevailing over central California. Fog is the main concern again this morning but thus far has not formed. Visibilities in the San Joaquin Valley have generally been in the 1-3 SM range, though Madera and Hanford have both fallen to 3/4 mile. But GOES GEOCAT LIFR probability has increased along and west of the Hwy 99 corridor from Merced to Hanford in the last half hour. The HRRR shows vsbys in this area dropping further through sunrise, but it was showing the same thing yesterday and they did not. So will continue to monitor the potential for some dense fog but it does not seem likely at this time. Water vapor satellite imagery shows an upper trough off the Pac NW coast with an impressive band of moisture (PWAT ~ 1.5") ahead of it. Models agree that this moisture will stay to our north as the trough moves inland tonight, with just a few mid/high clouds for our area. The trough will increase the onshore surface pressure gradient today, resulting in windy conditions through and below the Kern County mountain passes tonight into Sunday. Westerly wind gusts are not expected to reach advisory levels but 30-40 mph is likely in some areas, such as around Mojave. Winds will diminish Sunday night as the gradient relaxes and turns offshore on Monday with light easterly winds through the week. Dry conditions are are also expected to prevail throughout the upcoming week as a positively tilted upper ridge amplifies over the western CONUS. Conditions will be favorable for fog in the SJ Valley each night. Temperatures today will be similar to yesterday with some areas up a degree or two. The trough tonight will knock temps down slightly on Sunday, but they will rebound under the ridge early next week. Highs will generally be around 7-10 degrees above climatological norms, with the exception of Sunday when they briefly lower to around 5 degrees above normal. && .AVIATION...In the San Joaquin Valley, areas of MVFR visibilities due to haze for the next 24 hours. However, IFR with local LIFR visibilities will occur in fog between 12z and 18z Saturday. VFR conditions can be expected elsewhere over the central California interior during the next 24 hours. && .AIR QUALITY ISSUES... On Saturday November 5 2016...Unhealthy for sensitive groups in Kings County. Fireplace/Wood Stove Burning Status is: No Burning Unless Registered in Fresno...Kern...Kings...Madera...Merced and Tulare Counties. Further information is available at Valleyair.org && .CERTAINTY... The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is high. Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.php for additional information an/or to provide feedback. && .HNX Watches/Warnings/Advisories... NONE. && $$ public...DCH avn/fw...Riley synopsis...DCH weather.gov/hanford  FXUS66 KHNX 131433 AFDHNX Area Forecast Discussion National Weather Service San Joaquin Valley - Hanford CA 633 AM PST Sun Nov 13 2016 .SYNOPSIS...Dry weather and above normal afternoon temperatures will continue through Tuesday with patchy dense fog in the San Joaquin Valley during the late night and early morning. A Pacific storm system will bring and a chance for some light precipitation on Wednesday with cooler conditions and increased winds through Thursday. && .DISCUSSION...Fog has increased in coverage across the San Joaquin Valley this morning. GOES-W LIFR probability indicating dense fog possible north of Kern County, mainly along and west of Hwy 99. A dense fog advisory has been for this area through 10 AM. && .PREV DISCUSSION... /issued 351 AM PST Sun Nov 13 2016/ DISCUSSION...Satellite imagery showing clear skies over central California at this time as East Pacific ridging builds inland. Patchy fog is forming in the San Joaquin Valley and some locally dense spots are possible through sunrise. Otherwise, temperatures will warm up to well above normal again today with highs generally around 10 degrees higher than mid November averages. The ridge will continue into early this week for little change in conditions. A Pacific trough will move inland on Wednesday for a chance of precipitation. The modTrend continues to show a weaker and more northerly track with this system. QPF is unimpressive with only a few hundredths to a tenth of an inch in the mountains with highest amounts around Yosemite NP. The SJ Valley may only see a trace to a few hundredths on an inch with many areas likely remaining dry. Snow levels look to be near 7,000' around Yosemite on Wednesday afternoon when the best chances develop, then drop to around 5,000 feet Wednesday night as showers diminish. Given the low QPF, only a dusting of snow to around one inch is expected. The trough quickly shifts east with more upper ridging building in Thursday and Friday for dry conditions. The ridge axis then shifts over the Rockies next weekend a trough amplifying off the coast. Right now it looks like a dry southwest flow aloft will prevail over central CA with moisture steered over the Pac NW and northern Ca. Winds will remain light through Tuesday then increase with breezy to locally windy conditions developing Wednesday through Thursday. Temperatures will lower to near normal Wed-Thurs then trend back up to several degrees above normal Friday into the weekend. && .AVIATION...In the San Joaquin Valley...MVFR conditions will prevail in haze and mist during the next 24 hours with areas LIFR in fog through 18Z. VFR conditions can be expected elsewhere across the central CA interior during the next 24 hours. && .AIR QUALITY ISSUES... On Sunday November 13 2016...Unhealthy for sensitive groups in Fresno...Kern...Kings...Madera and Tulare Counties. Fireplace/Wood Stove Burning Status is: No Burning Unless Registered in Fresno...Kern...Kings...Madera...Merced and Tulare Counties. Further information is available at Valleyair.org && .CERTAINTY... The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is medium. Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.php for additional information an/or to provide feedback. && .HNX Watches/Warnings/Advisories... Dense Fog Advisory until 10 AM PST this morning CAZ089>092. && $$ public...DCH avn/fw...Dudley synopsis...DCH weather.gov/hanford  FXUS66 KHNX 120313 AFDHNX Area Forecast Discussion National Weather Service San Joaquin Valley - Hanford CA 713 PM PST Sat Nov 11 2017 .SYNOPSIS...Expect dry and mild conditions under the influence of weak high pressure through the weekend. A weak cold front will bring a chance of some light precipitation mainly north of Fresno County on Monday. Another cold front moves into the region Wednesday night. A chance of light precipitation is expected north of Kern County, then dry and warming again for the remainder of the week. && .DISCUSSION...Quick update for low clouds developing across the Tehachapi Mountains this evening. These clouds will likely linger through the morning so have added patchy fog to the grids. The GOES IFR Probability is also highlighting an area near the Grapevine, though surface conditions area quite a bit drier across the south SJV this evening especially south of Bakersfield. && .PREV DISCUSSION... /issued 241 PM PST Sat Nov 11 2017/ DISCUSSION... Sunrise surprise this morning with widespread dense fog development along the east side of the SJV. NW flow along the west side with 5 to 10 kts was enough to mix out the fog. Temps cooled off enough this morning to allow the airmass to become saturated in the SJV early this morning. We are looking at a similar situation tonight, however confidence is low on where and how dense the fog will be. Pirep reports from FAT indicated the fog was around 500 feet thick and burned off by 10 am pst. Guidance is trying to bring a cold front into the region...mainly north of Fresno on Monday. The models are weaker each run with the front. QPF amounts look to be light as the best dynamics will remain well north of the forecast area. Moisture will also be limited as the front is originating from the Gulf of Alaska. Snow levels across Yosemite National Park will be around 7500 feet and rise to around 8000 feet Monday night as the front becomes stationary across central CA. Clouds clear out on Tuesday with seasonal temperatures. Fog development will once again be an issue, however confidence is very low to put it in the forecast at this time. Guidance is forecasting another cold front to move into the region late on Wednesday afternoon and push into Kern Co by Wednesday night before falling apart. Moisture is once again limited due to the Northern origin of the front. Best dynamics again remain well north of the area with no real cold air advection expected behind the boundary. Confidence remains at medium for the the front on Wednesday and if it ends up like the previous fronts...it too will fizzle out. Quiet weather is expected Thursday through Saturday with near normal temperatures and dry conditions. && .AVIATION... Areas of IFR and local LIFR visibility due to morning fog the San Joaquin Valley 12z-18z and across the Tehachapi Mountains overnight. Otherwise, VFR conditions prevailing across the the remainder of central CA interior during the next 24 hours. && .AIR QUALITY ISSUES... None. && .CERTAINTY... The level of certainty for days 1 and 2 is low. The level of certainty for days 3 through 7 is low. Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.php for additional information an/or to provide feedback. && .HNX Watches/Warnings/Advisories... NONE. && $$ weather.gov/hanford  FXUS66 KHNX 272325 AFDHNX Area Forecast Discussion National Weather Service San Joaquin Valley - Hanford CA 325 PM PST Wed Dec 27 2017 .SYNOPSIS... High pressure will remain over the area for the next several days. Temperatures will remain above normal through next weekend with dry conditions prevailing. Hazy conditions will continue in the San Joaquin Valley with areas of late night and morning fog. && .DISCUSSION... The ridiculously resilient ridge is still sitting over the west coast keeping things rather boring weather-wise across the region. Save a few weak disturbances moving southward around the periphery of the ridge creating increased clouds there is not a whole lot to talk about as this pattern looks to continue into next week. Air quality sure will continue to take a beating with the super stable conditions in place preventing any mixing from occuring. So widespread hazy conditions and morning fog will be on tap for the San Joaquin Valley. The fog may become locally dense in some locations, however, with the lack of rainfall this season the fog thickness will be minimized and with that lack of fog thickness morning lows will be lower than normal with frost in many places. The positive side to less fog is that the afternoon highs will continue to be above normal, this is only a positive if you love the warmer weather. If you don't like the warmer air then the colder air is only a plane trip away into the midwest where todays high temperature in Chicago was 6 degrees. Yes you read that right. So I guess we should count our blessings around here. Dry conditions look to continue well into next week. Of course the models are anxious to get some systems into the region, but it seems to be a pipe dream at this point. This forecaster will not be putting his money on precipitation around here for the next week. Which believe me that is a bet I would be happy to lose. && .AVIATION... In the San Joaquin Valley, widespread MVFR visibilities in haze with local IFR visibility in mist from 06z until 18Z Thu. Otherwise, VFR conditions will prevail over the Central CA interior during the next 24 hours. && .AIR QUALITY ISSUES... On Thursday December 28 2017... Unhealthy in Kings County. Unhealthy for sensitive groups in Fresno... Kern... Madera and Tulare Counties. Fireplace/Wood Stove Burning Status is: No Burning Unless Registered in Fresno... Kern... Madera... Merced and Tulare Counties. No Burning For All in Kings County. Further information is available at Valleyair.org && .CERTAINTY... The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is medium. Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.php for additional information an/or to provide feedback. && .HNX Watches/Warnings/Advisories... NONE. && $$ public...Andersen avn/fw...BSO synopsis...Andersen weather.gov/hanford