June 24, 2020
Summary: The center of circulation of a relatively strong upper high is just off the northern Baja, California coast. A very warm bubble of subsiding air continues to drive temperatures well above the century mark. The freezing level taken over Oakland a few hours ago was 16,200 feet. The marine layer is roughly the same as yesterday at this time at 1800 feet at Monterey. The difference in pressure between San Francisco and Las Vegas is only 3.4 millibars. That’s enough to tug a minimal amount of sea breeze into the Delta with no impact on the remainder of the valley.
High clouds continue to move in from the southwest. Otherwise mostly clear skies will continue indefinitely. A little weak ripple of low pressure is penetrating the Pacific Northwest and will move into the Great Basin late today through Thursday. The combination of intense heating over California’s interior and the evaporation of the snow pack along the Sierra Nevada should trigger isolated thunderstorms over the back country of the Sierra Nevada the next couple of afternoons.
The next major change in the pattern will occur during the second half of the weekend as models continue to show a significant low pressure system dropping from western Canada and into the Pacific Northwest Saturday night. it will center over the Great Basin Sunday through Monday. Initially, this will result in a strong push of coastal air over the Coast Range and into the valley, possibly as early as late Saturday, resulting in gusty winds and much cooler temperatures early next week. Most of the models show the low pushing into the Rockies by early Tuesday, allowing high pressure over the eastern Pacific to build in for a rapid warming trend beginning Wednesday. my confidence level in the period of Wednesday through the following weekend is pretty low due to modeling differences. For now, though, I’m leaning towards another round of hot weather late next week.
Forecast: Other than periods of high clouds at times, it will be mostly clear and hot through Saturday. mostly clear, breezy, and much cooler Sunday through Monday. Mostly clear Monday night through Wednesday with a warming trend.
Short Term:
| Madera 103/68/103/69/104 | Reedley 104/69/104/70/105` | Dinuba 103/67/103/68/104 |
| Porterville 105/70/105/71/105 | Lindsay 104/67/104/69/105 | Delano 105/71/105/72/106 |
| Bakersfield 105/78/105/77/105 | Taft 103/80/104/81/105 | Arvin 105/73/105/74/106 |
| Lamont 104/73/105/75/105 | Pixley 104/69/104/70/105 | Tulare 103/67/103/68/103 |
| Woodlake 104/69/104/70/105 | Hanford 105/70/105/71/105 | Orosi 103/67/104/68/104 |
Seven Day Forecast:
| Saturday
Mostly clear 70/105 |
Sunday
Mostly clear 62/88 |
Monday
Mostly clear 55/86 |
Tuesday
Mostly clear 54/91 |
Wednesday
Mostly clear 62/99 |
Two Week Outlook: June 30 through July 6: This model indicates a predominant area of low pressure will be in place, especially over the interior west, resulting in a relatively strong on shore flow. Temperatures will range marginally below average with typical dry conditions continuing.
June: The month of June brings us into the dry season for central California. The chance of rain during the month will be very low on any given day. This model indicates we can expect above average temperatures for the month.
June, July, August: What can you say about the summer months in the valley except it will be hot and dry. Of course, this summer will be no exception. Precipitation will be near average, which is next to none. This model indicates the next three months will have above average temperatures, but what else is new?
Winds Discussion: Winds during the afternoons and evenings through Friday will be mostly out of the northwest at 5 to 12 MPH, Winds during the night and morning hours will be generally light and variable. By Saturday evening, winds will initially increase out of the west at 15 to 25 MPH with gusts to 35 MPH possible, mainly along the west side. Expect elevated wind conditions Sunday through Monday.
Rain Discussion: Expect dry conditions for the next 7 to 10 days.
Afternoon Dew Points Today: Upper 50s to the lower 60s. Kern: Mid to upper 50s. Humidity values ranging from 25%/65% at Visalia. Bakersfield 20%/55%
Actual Humidity range June 23, 2020: Delano, 60%/31%, Porterville, 77%/20%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 70%, tomorrow 90%. Bakersfield: Today: 70% Tomorrow: 90%
ET Rates Over the Past Seven Days: Stratford 2.25, Parlier 2.02, Blackwell Corner 2.17, Arvin 2.24, Orange Cove 2.20, Porterville 2.09, Delano 2.01. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 73, Parlier 75, Blackwell 87, Arvin, 78, Orange Cove 80, Porterville 81, Delano 81
Record Temperatures: 110/51. Average Temperatures: 94/61
Cooling Degree Days this Season: 533 +137
Courtesy of the NWS
Average temperature for June so far: 75.8 +1.9
Precipitation: Seasonal total for Fresno/average + or 7.63 or -3.67. Month to Date: .00 -.20
Since Oct 1, 2019, Bakersfield: 7.20, or +.86. Month to Date: .02 -.05
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: 5:42, Sunset: 8:22 pm. Hours of Daylight: 14:41
Yesterday’s Weather:
MCE : Merced 153 : DH1700 / 100 / 65 / 0.00 /
MAE : Madera 253 : DH1700 / 100 / 61 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 101 / 71 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 100 / 64 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 102 / 62 / 0.00 /
BFL : Bakersfield Airport 496 : DH1700 / 100 / 71 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 100 / 65 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 100 / 63 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 99 / 66 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 8.35 61 18.37 134 13.76 14.06
MODESTO 0.00 6.94 54 13.35 104 12.82 13.11
MERCED 0.00 9.54 78 13.27 109 12.19 12.50
MADERA 0.00 6.02 51 11.42 98 11.71 12.02
FRESNO 0.00 7.63 68 11.85 105 11.30 11.50
HANFORD 0.00 6.62 67 9.50 96 9.88 10.10
BAKERSFIELD 0.00 7.20 114 7.80 123 6.34 6.47
BISHOP 0.00 2.25 48 8.47 182 4.65 5.18
SALINAS T 9.16 73 13.80 109 12.62 12.83
PASO ROBLES 0.00 11.37 91 14.88 120 12.45 12.78
SANTA MARIA 0.00 10.61 77 15.68 114 13.75 13.95
Next report: June 25/morning