July 9, 2019
Summary: The marine layer 24 hours ago was nearly 3,000 feet deep. The latest sounding at the naval installation at Monterey was 1,600 feet. Also, the rather robust onshore flow of the past few days is now waning, effectively cutting off the flow of modified sea breeze from moving down the valley. Winds at Travis Air Force Base in the Delta were out of the west at only 12 MPH.
The persistent area of low pressure over the Pacific Northwest is shifting eastward and is now centered over the northern Rockies. Upper level high pressure currently over Texas will slowly shift towards the west, taking up its usual summertime position over the Four Corners region of the Desert Southwest. As the high shifts westward, pressures aloft will increase and temperatures will respond accordingly. Temperatures today will be fairly moderate as the shallow layer of marine air mixes out. Readings Wednesday will nudge up into the upper 90s with hotter locations eclipsing the 100 degree mark Thursday. The high will reach its westernmost position Friday and Saturday, driving temperatures well above the century mark.
Look for temperatures Saturday and Sunday to soar into the 104 to 108 degree range then slowly modify Monday through Wednesday as the high flattens out in response to a weak low center moving into British Columbia and the Pacific Northwest.
As is typical with a Four Corners high, winds aloft will be southerly. Even though the monsoon appears to be very limited, a small amount of mid and high level moisture will creep into southern California and possibly up the Sierra Nevada for a slight chance of isolated thunderstorms over the back country Saturday through Monday. Skies will remain mostly clear over the valley with possibly mid and high level clouds on occasion.
Even though temperatures will come down some by the middle of next week, readings may still eclipse the 100 degree mark. Some models show the high shifting even further west about the 18-20 of the month. This would result in another period of hot weather with a chance of monsoon moisture triggering thunderstorms in the Sierra Nevada afternoons and evenings.
Forecast: Mostly clear through Wednesday. Mostly clear and hot Thursday through Tuesday with occasional mid and high level clouds Saturday through Monday.
Short Term:
| Madera 92/59/97/63/99 | Reedley 92/59/96/63/98 | Dinuba 91/57/95/62/98 | |
| Porterville 93/58/96/64/99 | Lindsay 92/57/96/63/98 | Delano 93/60/96/66/100 | |
| Bakersfield 93/68/98/70/100 | Taft 94/72/98/75/101 | Arvin 93/63/98/68/101 | |
| Lamont 93/64/98/67/100 | Pixley 92/57/96/64/99 | Tulare 92/56/94/63/98 | |
| Woodlake 92/57/96/62/98 | Hanford 92/60/96/64/99 | Orosi 92/57/95/63/98 | |
Seven Day Forecast:
| Friday
Mostly clear 67/102 |
Saturday
Mostly clear 71/106 |
Sunday
Mostly clear 70/105 |
Monday
Mostly clear 68/101 |
Tuesday
Mostly clear 68/100 |
Two Week Outlook: July 16 through July 22: The trend the past couple of model runs is for dominant high pressure over the western one-third of the U.S. This will result in above average temperatures during this time frame with the usual dry conditions continuing.
July: July, of course, is typically hot and if this model has any credence, it will be hotter than average. With a dominant Four Corners high and a trough over the middle of the country, usual July dry conditions will prevail.
July, August, September: This model is indicating that the western U.S., including California, will experience above average temperatures overall during the mid to late summer period. Precipitation is expected to be near average, which, of course, is very little and there’s no reason to believe otherwise.
Winds: Winds will be generally out of the northwest afternoons and evenings at 5 to 12 MPH and 3 to 8 MPH during the later night and morning hours.
Rain: Expect dry conditions for the next 7 to 10 days.
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Afternoon Dew Points Today: Mid to upper 40s. Kern: Mid to upper 40s. Humidity values ranging from 20%/80% at Hanford. Bakersfield 20%/65%
Actual Humidity range July 8, 2019: Delano, 67%/24% Porterville, 85%/18%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100%, tomorrow 100% Bakersfield: Today: 100% Tomorrow: 100%
ET Rates Over the Past Seven Days: Stratford 1.97, Parlier 1.93, Blackwell 2.26, Arvin 2.08, Orange Cove 2.11, Porterville 1.96, Delano 1.91. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 76, Parlier 78, Blackwell 8, Lindcove, 75, Arvin, 77, Orange Cove 77, Porterville 86, Delano 81
Record Temperatures: 113/55. Average Temperatures: 98/65
Cooling Degree Days this Season: 714 +128
Courtesy of the NWS
Average temperature for July so far: 77.1 -1.1
Precipitation: Seasonal total/average/above or below average:
Since Oct 1, 2018 Fresno: 11.85 season. or +.54. Month to Date: .00 -.00
Since Oct 1, 2018, Bakersfield: 7.80, or +1.45. Month to Date: .00 +.00
Water year season is from October 1st through September.
Chilling Hours November 1st through February 28: Orange Cove, Parlier, Arvin, Shafter, Stratford, Lindcove, Porterville,
Hours at 45 or below 45.
Sunrise: 5:48 am Sunset: 8:20 pm. Hours of Daylight: 14:31
Yesterday’s Weather:
MAE : Madera 253 : DH1700 / 90 / 56 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 91 / 62 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 92 / 57 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 92 / 54 / 0.00 /
BFL : Bakersfield Airport 496 : DHM / 92 / 66 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 90 / 58 / 0.00 /
ATEC1 : Avenal 787 : DHM / 80 / 72 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 91 / 59 / 0.00 /
TFTC1 : Taft 759 : DH1658 / 91 / 70 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 86 / 58 / 0.00 /
Rainfall: Water year Oct 1st through September 30th
24hr Season % L.Y. % Ave. Ave. yearly total
STOCKTON 0.00 18.37 134 9.22 67 13.76 14.06
MODESTO 0.00 13.35 104 8.17 64 12.83 13.11
MERCED 0.00 13.27 109 7.06 58 12.19 12.50
MADERA 0.00 11.42 97 7.22 61 11.74 12.02
FRESNO 0.00 11.85 105 6.73 60 11.31 11.50
HANFORD 0.00 9.50 96 4.70 48 9.89 10.10
BAKERSFIELD 0.00 7.80 123 3.95 62 6.35 6.47
BISHOP 0.00 8.47 180 1.49 32 4.71 5.18
SALINAS 0.00 13.80 109 7.16 57 12.63 12.83
PASO ROBLES 0.00 14.88 120 9.62 77 12.45 12.78
SANTA MARIA 0.00 15.68 114 6.01 44 13.76 13.95
Next report: Wednesday, July 10