September 29, 2020
Summary: There is not a cloud to be found anywhere over the western U.S. and even up into British Columbia as a very amplified pattern continues. The balloon sounding above Oakland this morning is interesting as it finds extremely light winds all the way up to above 60,000 feet.
There are actually two high centers. One is over Oregon with a weaker center over Arizona. The surface high over the Great Basin has weakened considerably. Even so, a weak off shore flow continues to move smoke over mainly the northern half of the valley. This smoke will have some impact on daytime temperatures where it is dense enough to act as a filter.
Models are consistent in showing this high hanging around through Saturday with summertime conditions continuing through the remainder of the week. During the second half of the weekend and into the early part of next week, the high will break down ove the Pacific Northwest, allowing the westerlies to break through. This will finally begin to lower temperatures down to near seasonal values, especially as we get closer to the middle part of next week. Some models are showing tropical moisture from a low just now developing near Cabo San Lucas. Over the next week to ten days, it is projected to become a hurricane, weakening well off the California coast. Some of this moisture may become entrained in the westerly winds aloft. For now, it’s just a thought on medium range models as a lot of time will pass between now and next Thursday and Friday.
Forecast: Mostly clear skies through Thursday. Mostly clear skies Thursday night through Tuesday.
Short Term:
| Madera 96/58/96/60/96 | Reedley 97/58/96/59/96 | Dinuba 95/58/95/59/94 |
| Porterville 97/58/97/60/96 | Lindsay 97/57/96/58/96 | Delano 97/60/95/61/96 |
| Bakersfield 98/71/98/71/97 | Taft 97/74/96/74/96 | Arvin 98/62/98/63/97 |
| Lamont 98/61/98/62/97 | Pixley 97/59/96/59/96 | Tulare 96/57/95/59/95 |
| Woodlake 95/58/95/58/95 | Hanford 96/59/96/59/95 | Orosi 95/57/95/58/95 |
Seven Day Forecast:
| Friday
Mostly clear 59/97 |
Saturday
Mostly clear 57/93 |
Sunday
Mostly clear 56/93 |
Monday
Mostly clear 55/91 |
Tuesday
Mostly clear 55/89 |
Two Week Outlook: October 5 through October 11: This model is indicating a strong ridge of upper level high pressure will be over the western one-third of the U.S. for very dry conditions. Temperatures will remain above to possibly well above average.
October: This model essentially depicts the entire lower 48 with above average temperatures over the next 30 days. The most pronounced temperature anomalies will be over the Desert Southwest. This model also suggests there will be an equal chance of above or below average precipitation.
October, November, December: This model reflects the influence of La Nina. It paints above average temperatures over much of the country, especially the Desert southwest, and to a lesser extent, central California. Drier than average conditions are anticipated over southern California while northern California could possibly luck out with near average rainfall. Above average precipitation is expected over the Pacific Northwest.
Winds Discussion: Winds will be generally at or less than 10 MPH late mornings through the afternoons through Friday. Winds during the night and morning hours will be generally at or less than 5 MPH with periods of near calm conditions.
Rain Discussion: Expect dry conditions for at least the next 7 to 10 days.
Afternoon Dew Points Today: Low to mid 50s. Kern: Mid to upper 40s.
Actual Humidity Range Yesterday: Delano, 83%/34%, Porterville, 96%/30%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100%, tomorrow 100%. Bakersfield: Today: 100% Tomorrow: 100%
ET Rates Over the Past Seven Days: Stratford 1.41, Parlier 1.16, Blackwell Corners 1.26, Arvin 1.42, Orange Cove 1.18, Porterville .98, Delano 1.20. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 72, Parlier 74, Blackwell NA, Arvin, 75, Orange Cove 79, Porterville 72, Delano 70
Record Temperatures: 102/43. Average Temperatures: 87/55
Cooling Degree Days This Season: 2064 +487
Courtesy of the NWS
Average Temperature for September So Far: 76.6 +3.0
Precipitation: Seasonal total for Fresno/average + or -. 7.63 or -3.85. Month to Date: .T -.15
Since Oct 1, 2019, Fresno, 7.63 -3.69. 7.20, or +.84. Bakersfield, 7.20 +.74. Month to Date: .T -.07
Water year season is from October 1st through September.
Chilling Hours November 1st through February 28: Orange Cove, Parlier, Arvin, Shafter, Stratford, Delano, Lindcove, Porterville
Hours at 45 or below 45.
Sunrise: 6:54 Sunset: 6:43 pm Hours of Daylight: 11:52
Yesterday’s Weather
MCE : Merced 153 : DH1700 / 94 / 60 / 0.00 /
MAE : Madera 253 : DH1700 / 94 / 60 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 93 / 67 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 94 / 60 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 96 / 62 / 0.00 /
BFL : Bakersfield Airport 496 : DH1700 / 98 / 68 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 93 / 63 / 0.00 /
ATEC1 : Avenal 787 : DHM / M / 68 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 94 / 62 / 0.00 /
TFTC1 : Taft 759 : DHM / M / M / M /
LOSC1 : Los Banos 120 : DH1600 / 94 / 64 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 8.35 60 18.60 133 14.03 14.06
MODESTO 0.00 6.94 53 13.47 103 13.08 13.11
MERCED 0.00 9.54 76 13.27 106 12.48 12.50
MADERA 0.00 6.02 50 11.42 95 12.00 12.02
FRESNO 0.00 7.63 66 11.85 103 11.48 11.50
HANFORD 0.00 6.62 66 9.50 94 10.08 10.10
BAKERSFIELD 0.00 7.20 111 7.82 121 6.46 6.47
BISHOP 0.00 2.25 44 8.48 165 5.15 5.18
SALINAS 0.00 9.18 72 13.90 109 12.81 12.83
PASO ROBLES 0.00 11.47 90 14.88 117 12.75 12.78
SANTA MARIA 0.00 10.66 77 15.68 113 13.93 13.95
Next report: September 30/morning