424
FXUS66 KHNX 192016
AFDHNX

Area Forecast Discussion
National Weather Service Hanford CA
116 PM PDT Sat Oct 19 2024

.KEY MESSAGES...

1. A Red Flag Warning is currently in effect through 5 PM this
afternoon across the higher terrain of the Sierra Nevada and
West Side Hills as dry conditions and breezy winds enhance fire
concerns.

2. Elevated fire weather conditions will persist across the
Sierra Nevada and West Side Hills on Sunday and Monday due to
low humidity and poor overnight recovery.

3. Temperatures will continue to warm up on Sunday and Monday
and remain above normal for much of next week.

&&

.DISCUSSION...With the quasi-stationary upper low over AZ
weakening, winds have been slowly decreasing across our area.
However, relative humidity remains very low across portions of
our area. most noticably over the central Sierra Nevada and the
West Side Hills. A Red Flag Warning continues for these area
until 500 pm PDT this afternoon. With decreased winds and a
slight increase in humidity expected on Sunday, so not expect
dangerous fire weather conditions although conditions will be
elevated for fire concerns due to low daytime humidity and poor
overnight recovery on Sunday and Monday. The low over AZ is
progged to slowly weaken and slowly move northward tonight and
Sunday then get swept eastward into the central CONUS on Monday
as it gets pushed eastward by a subtropical jet.

SREF is showing a fairly strong upper ridge building into CA as
the low to our east moves away. This will result in rising
heights and thicknesses over our area on Sunday and Monday and
continue the warming trend across our area that began today. By
midweek, afternoon highs are expected to be 6 to 8 DEG F above
daily normals. NBM is indicating a PoE of 85 DEG F across most
of the San Joaquin Valley will increase to 35 to 60 percent by
Wednesday. RH trends are showing increasing daytime humidity
and improved recovery by midweek which should decrease the fire
risk some. However, our area is expected to remain dry through
the end of next week although a trough pushing into the PAC NW
on Friday should bring a cooling trend to our area next on
Friday and Saturday with temperatures lowering to near normal
by Satruday as the ridge breaks down.

&&

.AVIATION...VFR conditions will prevail across the Central CA
Interior over the next 24 hours.

&&

.AIR QUALITY ISSUES...None.

&&

.CERTAINTY...

The level of certainty for days 1 and 2 is medium.
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...
Red Flag Warning until 5 PM PDT this afternoon for CAZ579-590-
592.
&&

$$

public/aviation...DAS
idss...MM

weather.gov/hanford