May 27, 2021
We are still being governed by weak features this morning. a trough of low pressure is currently moving into the Pacific Northwest while a weak zone of upper level high pressure extends from the eastern Pacific Ocean into the Great Basin with a weak west/northwest flow aloft. A very weak ripple of low pressure will move through southern California late Friday and Saturday with virtually no impact on our weather.
There is roughly a 7 millibar difference in pressure this morning between San Francisco and Las Vegas. This will be enough to generate some locally gusty winds through the passes along the Interstate 5 corridor.
Our first heat wave of the season will begin early next week. On Sunday, a strong ridge of upper level high pressure will begin to build into the Pacific Northwest and northern California. By Monday, the center of the high will be just off the coast of northern California. The clockwise flow around the high will generate a northeast flow aloft, which is an off shore flow. By Wednesday afternoon, the high will be almost right overhead. From Tuesday through Thursday, readings on the valley floor will soar into the 100 to 105 degree range. I wouldn’t be shocked to see a few locations top out near 106 to 107, especially Wednesday and Thursday.
Most models show the high moving southeastward on Friday of next week for the beginning of a slow cooling trend.
Forecast: Mostly clear skies through Monday. Mostly clear and not Monday night through Thursday.
Short Term:
| Madera 90/53/91/54/91 | Reedley 91/52/91/53/91 | Dinuba 89/51/89/53/90 |
| Porterville 91/51/91/53/91 | Lindsay 90/50/91/52/91 | Delano 90/53/91/54/92 |
| Bakersfield 90/62/90/65/92 | Taft 88/65/88/69/90 | Arvin 91/55/91/58/92 |
| Lamont 90/58/90/60/92 | Pixley 91/53/91/54/92 | Tulare 89/51/90/53/90 |
| Woodlake 89/51/90/52/91 | Hanford 91/54/91/55/92 | Orosi 89/50/90//52/91 |
Seven Day Forecast:
| Sunday
Mostly clear 55/93 |
Monday
Mostly clear 62/98 |
Tuesday
Mostly clear 64/103 |
Wednesday
Mostly clear 64/104 |
Thursday
Mostly clear 65/104 |
Two Week Outlook: June 2 through June 8: This model is indicating a zone of upper level high pressure will dominate the western 1/3 of the US during this time frame, resulting in above average temperatures. The typical dry conditions will continue.
June: This model is indicating a ridge of upper level high pressure will be more dominant over the Desert Southwest and, to a lesser extent, California, resulting in above average temperatures for the month with the usual dry conditions prevailing.
June, July, August: This model mimics the pattern of recent years, indicating high pressure over the Desert Southwest being the most dominant feature, resulting in above average temperatures. Theoretically, this pattern blocks monsoonal moisture from moving northward. Typically, there’s little to no precipitation anyway, and that will be the case this summer.
Winds Discussion: Winds during the afternoons and evenings will be mainly out of the northwest at 8 to 15 MPH with locally stronger gusts. Winds during the night and morning hours will be mainly out of the northwest at 5 to 10 MPH with periods of near calm conditions, through Sunday.
Actual Humidity Range Yesterday: Delano, 63%/23% Porterville, 77%/20%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100%, tomorrow 90%. Bakersfield: Today: 100% Tomorrow: 90%
ET Rates Over the Past Seven Days:. Stratford 2.07, Parlier 1.81, Arvin 1.86, Orange Cove 1.96, Porterville 1.78, Delano 1.78. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 65, Parlier 71, Arvin, 71, Orange Cove 72, Porterville 78, Delano 69.
Record Temperatures: 104/46. Average Temperatures: 86/57
Cooling Degree Days This Season:. 183 +14 Varies widely from location to location. courtesy of the NWS
Average Temperature for this month So Far: 70.4 +1.8 courtesy of the NWS
Precipitation: Seasonal total for Fresno, 6.59 or -4.02 or 62% of average. Month to Date: .00 or -36
Precipitation for Bakersfield, Season, 2.77, +or- -3.46 or 44% of average. Month to date .00 or -.22
Water year season is from October 1st through September 30.
Chilling Hours November 1st through February 28: Orange Cove, , Parlier, , Arvin, , Belridge, , Shafter, , Stratford, , Delano, , Porterville,
Hours at 45 or below 45. Courtesy UC Davis
Sunrise: 5:43 am Sunset: 8:10 Hours of Daylight: 14:25
Yesterday’s Weather
MCE : Merced 153 : DH1700 / 89 / 52 / 0.00 /
MAE : Madera 253 : DH1700 / 90 / 49 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 90 / 59 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 90 / 57 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 91 / 51 / 0.00 /
BFL : Bakersfield Airport 496 : DH1600 / 88 / 62 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 89 / 55 / 0.00 /
ATEC1 : Avenal 787 : DHM / M / M / M /
PTV : Porterville Airport 442 : DH1700 / 90 / 53 / 0.00 /
TFTC1 : Taft 759 : DHM / 86 / 61 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 88 / 54 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 7.88 60 8.33 63 13.19 13.45
MODESTO 0.00 7.12 59 6.87 57 11.97 12.27
MERCED 0.00 7.00 61 0.00 0 11.57 11.80
MADERA 0.00 M M M M 10.52 10.79
FRESNO 0.00 6.59 62 0.00 0 10.61 10.99
HANFORD 0.00 4.29 54 0.00 0 7.95 8.13
BAKERSFIELD 0.00 2.77 44 0.00 0 6.23 6.36
BISHOP 0.00 1.62 38 2.25 52 4.32 4.84
SALINAS 0.00 5.75 46 9.07 73 12.38 12.58
PASO ROBLES 0.00 6.74 56 11.36 95 11.93 12.15
SANTA MARIA 0.00 6.87 52 10.53 80 13.12 13.32
Next report: May 28/am