Weather Sunday February 4 2024 Dry in the NE West coast Storms

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Dangerous Flash Flooding likely across Central/Southern California into
early next week.
Heavy Snow will cause extreme impacts over much of the Sierra Nevada on
Sunday and Monday.
Anomalous warmth continues across Northern/Central Plains and
Upper/Middle Mississippi Valley.
A highly amplified upper-level pattern will support multiple sensible
weather hazards across the CONUS over the next few days. Moderate to heavy
snowfall will continue across parts of the Northern/Central Rockies
through Sunday before coming to an end Sunday night. Heavy rainfall and
scattered thunderstorms will spread into central California tonight as a
warm front associated with an approaching low pressure system focuses
moisture and instability over the area. A Slight Risk of Excessive
Rainfall (level 2/4) is in effect for portions of the central California
coast from the Bay Area down through Big Sur. Conditions worsen on Sunday
as the low pressure system arrives along the California coast. There is a
High Risk of Excessive Rainfall (level 4/4) over portions of Santa
Barbara, Ventura and Los Angeles Counties where the combination of high
moisture, instability and lift (cold front) will produce a dangerous Flash
Flooding situation. It's strongly recommended that people: heed warnings
from emergency management personnel, the local forecast office guidance
and avoid driving through flooded roadways. Broader Moderate (level 3/4)
and Slight Risk areas will encompass most of the central and southern
coast as well as upslope areas of the Sierra Nevada and parts of the
Central Valley. This moisture plume will spread east into the Sierra,
leading to an extremely impactful heavy snow event over the mountains and
actually spilling over into portions of the western Great Basin. Winter
Storm Warnings are in effect for the aforementioned areas where 4-6'+ of
snow is probable. High winds will also be a significant issue with
whipping rain in the low elevations and blowing snow likely in the Sierra
on Sunday. The focus for heavy rainfall and scattered thunderstorms shift
into southern California Sunday night into Monday as the upper low
continues to direct energy and moisture into the region beneath a
persistently strong jet streak. A Moderate Risk of Excessive Rainfall is
in effect for portions of Los Angeles, Orange, San Diego and Riverside
Counties where the strong cold front will act as a focus for potential
flash flooding.
Elsewhere, a developing low pressure system will focus heavy rain and
thunderstorms across the central Gulf Coast tonight. A Slight Risk of
Excessive Rainfall is in effect for portions of southeast Louisiana into
southern Mississippi. The low pressure system will then move into the
eastern Gulf Coast and spread heavy rain and thunderstorm activity into
the Florida Peninsula on Sunday. A Slight Risk of Severe Thunderstorms
(level 2/5) is in effect for portions of south Florida where isolated to
scattered severe storms will be possible in the morning. An omega block
ridge will persist over the central-eastern U.S. through early next week,
which will support above average temperatures across the Great Plains,
Mississippi Valley and Midwest. The highest anomalies of around +30-40
degrees will occur over portions of the Northern Plains and Upper
Mississippi Valley where high temperatures will be in the 40s while low
temperatures drop into the upper 20s to mid 30s.