North El Monte, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

205
FXUS66 KHNX 272228
AFDHNX

Area Forecast Discussion
National Weather Service Hanford CA
328 PM PDT Sun Apr 27 2025

.UPDATE...Updated 00Z Aviation.

&&

.KEY MESSAGES...

1. Temperatures will be much cooler than climatological average
today and Monday, but will overall be trending warmer this
week.

2. Winter-like weather, or valley rain and mountain snow, will
be ending by this afternoon.

3. Another system arrives midweek which will provide a chance of
showers and thunderstorms to mainly the mountain areas.
Otherwise, warmer than average temperatures continue until the
end of the week.

4. A cooldown and stronger system will bring a chance of more
widespread precipitation and locally gusty winds by next
weekend.

&&

.DISCUSSION...
Latest satellite imagery shows our region underneath the back
side of an upper-level low pressure system that has moved east
of our region into the Great Basin. However, in the northerly
flow aloft, some lingering moisture will bring additional light
snow showers to the Sierra Nevada until this afternoon.
Probabilities for at least one more inch of snow in the Sierra
are around 40-70 percent with much lower chances of 2 inches or
greater. Thus, we will be ending the Winter Weather Advisory at
11 AM PDT this morning, as little precipitation is likely to
occur through the remainder of today. Otherwise, low and mid-
level clouds will persist today with cooler than average
temperatures.

A warming trend occurs starting Monday, with more noticeable
warming by Tuesday. Daytime highs will remain slightly below
average on Monday and rise slightly above average on Tuesday.
Expect even warmer days on Wednesday and Thursday. The chances
for a maximum temperature of at least 85 degrees will be 50 to
80 percent for both the SJ Valley and Kern County desert on
Wednesday and Thursday, but will lower by Friday. In the
meantime, an upper- level shortwave will provide enough lift for
a slight chance of isolated thunderstorms over the Sierra
Nevada into the Tehachapi Mountains, as well as the adjacent
foothills on both Wednesday and Thursday during the afternoons
and early evenings. However, this feature is not expected to
provide any significant cooling.

Another relatively cold low pressure system arrives by late
Friday and will bring the chance for more widespread
precipitation into the weekend. Preliminary snow levels will
generally be above 6,000 feet with this system but will lower
slightly by next Sunday.

Latest outlooks from the Climate Prediction Center continue to
show a 50 to 60 percent chance (6-10 day outlooks for above
average precipitation, but have trended towards below average
temperatures. As for the 8-14 day outlook, there remains a
slight tilt in the odds towards above average precipitation
(about a 35-40 percent chance) with seasonal temperatures.


&&


.AVIATION...00Z Update:

In the San Joaquin Valley and West Side Hills, VFR prevails,
except for local MVFR due to low clouds until 18Z Monday.

Across the Sierra Nevada, adjacent foothills and Tehachapi
Mountains, MVFR ceilings with areas of mountain obscuring IFR
lasting thru 18Z Mon.

Otherwise VFR thru 18Z Mon.

&&

.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.html for additional information
and/or to provide feedback.

&&

.HNX WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

public...BSO
aviation....JPK

weather.gov/hanford