Imperial, California 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Imperial CA
National Weather Service Forecast for:
Imperial CA
Issued by: National Weather Service Phoenix, AZ |
Updated: 3:53 am PDT Oct 6, 2024 |
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Today
Hot
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Tonight
Haze then Clear
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Monday
Hot
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Monday Night
Mostly Clear
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Tuesday
Sunny
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Tuesday Night
Mostly Clear
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Wednesday
Sunny
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Wednesday Night
Clear
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Thursday
Sunny
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Hi 112 °F |
Lo 76 °F |
Hi 111 °F |
Lo 74 °F |
Hi 107 °F |
Lo 72 °F |
Hi 105 °F |
Lo 72 °F |
Hi 105 °F |
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Excessive Heat Warning
Today
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Sunny and hot, with a high near 112. Southwest wind around 5 mph becoming north in the afternoon. |
Tonight
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Widespread haze between 11pm and midnight. Clear, with a low around 76. West northwest wind around 5 mph becoming southeast in the evening. |
Monday
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Sunny and hot, with a high near 111. West wind around 5 mph becoming east in the afternoon. |
Monday Night
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Mostly clear, with a low around 74. West wind around 5 mph. |
Tuesday
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Sunny, with a high near 107. Southeast wind around 5 mph. |
Tuesday Night
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Mostly clear, with a low around 72. West wind around 5 mph. |
Wednesday
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Sunny, with a high near 105. South southwest wind around 5 mph becoming east southeast in the morning. |
Wednesday Night
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Clear, with a low around 72. South wind around 5 mph becoming northwest after midnight. |
Thursday
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Sunny, with a high near 105. South southeast wind around 5 mph becoming east northeast in the morning. |
Thursday Night
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Mostly clear, with a low around 72. South southwest wind around 5 mph. |
Friday
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Sunny, with a high near 102. South wind 5 to 10 mph becoming west southwest in the afternoon. |
Friday Night
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Mostly clear, with a low around 69. West northwest wind around 5 mph. |
Saturday
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Sunny, with a high near 98. West northwest wind around 5 mph becoming north in the afternoon. |
Forecast from NOAA-NWS
for Imperial CA.
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Weather Forecast Discussion
510
FXUS65 KPSR 061134
AFDPSR
Area Forecast Discussion
National Weather Service Phoenix AZ
434 AM MST Sun Oct 6 2024
.UPDATE...Updated 12z Aviation Discussion.
&&
.SYNOPSIS...
Lower desert high temperatures near 110 degrees are expected for
at least two more days before finally trending slowly downward.
Unfortunately high temperatures will still be near daily records
through most of the week for many locations with minimal relief
from a midweek disturbance. Temperatures are forecast to cool
more, but still remain above normal, as another disturbance moves
in heading into next weekend.
&&
.DISCUSSION...
Only two more days of lower desert high temperatures near the
110F mark are expected before temperatures finally begin a slow
downward turn across the region. Despite the downward turn,
afternoon high temperatures are still forecast to be near or
breaking daily records - which are in the lower 100s - through the
coming workweek as highs reach around 10 degrees above normal
(see CLIMATE section below). Normal highs this time of year are in
the lower 90s. Abnormally strong high pressure and fairly
stagnant dry air continues to drive the 110 degree heat. The H5
height field and 850mb temperatures lower slightly by the middle
of the week as a very weak trough pushes in from the west and
draws a little bit of moisture and clouds into the Desert
Southwest. The NBM adds very low PoPs (<10%) to the region Tuesday
and Wednesday, but any rain shower will be most favorable over
higher terrain areas and likely low impact. The clouds could help
block the sun at times and temporarily alleviate afternoon heat.
However, the clouds and slight uptick in moisture do not look like
they will be enough to keep some areas, like Phoenix, from
reaching Major HeatRisk again on Tuesday. For this reason the
Excessive Heat Warning has been extended through Tuesday now just
for the Phoenix area.
By the end of the week and into the weekend global models remain
consistent in showing a trough moving into the Western CONUS from
the Eastern Pacific, but uncertainty increases considerably in
what this trough will do once pushing inland. The majority of
ensemble members at least have this trough influence the weather
conditions in the Desert Southwest, but they also keep the trough
pretty weak. Looking at the latest ensemble clustering the biggest
variance in the large-scale synoptic pattern for the Western CONUS
appears tied to the uncertainty in amplification of upstream
PacNW ridging and Eastern Pacific troffing behind the trough
moving inland at this week. Ridging in the Northwest would open
the door for the trough late this week to close off somewhere in
the Desert Southwest, which is being hinted at by individual
global models, including both the latest GFS and ECMWF
deterministic runs. While this sounds like a nice change and may
bring rain and cooler temperatures to the region this is still a
week away and reality may still be temperatures well above normal
and little to no rainfall for much of the region. Time will tell.
&&
.AVIATION...Updated at 1135Z.
South Central Arizona including KPHX, KIWA, KSDL, and KDVT; and
Southeast California/Southwest Arizona including KIPL and KBLH:
No aviation weather concerns are anticipated through the TAF
period under mostly clear skies. Overall wind pattern will
continue to exhibit the typical diurnal tendencies with light
speeds mostly aob 7 kts. There will likely be extended periods of
very light/calm and variable winds, especially during the periods
of diurnal transitions.
&&
.FIRE WEATHER...
Very dry and extreme heat conditions will continue for many areas
through Tuesday, with lower desert highs ranging between 104-112
each afternoon. MinRH values in the afternoons in the 5-10% range
will be common through at least Tuesday, while MaxRH readings are
expected to be between 20-30%, with locally higher values in Yuma
and Imperial Counties. The driest conditions are expected today
through Monday afternoon, with RH values under 25% in most areas
for the next 36-48 hrs. An increase in winds above the surface
during the overnight hours, this morning and again tonight/Monday
morning, may lead to very localized elevated fire weather
conditions in South-Central AZ. Easterly winds during the
overnight hours on and near ridgetops will be capable of reaching
25-35 mph at times, mostly in the mountains east of Phoenix.
There will be a very slight increase in moisture beginning midweek
that may keep MinRH values from falling into the single digits,
but most areas will still see 10-20% readings in the afternoon
through the end of this week. There will also be potential for
some regional rain showers with the moisture increase, but at this
time the chances are very low (5% or less) across the lower
deserts and CWR is near zero. Winds, beyond Monday, will follow
familiar diurnal trends, with occasional afternoon gusts near
15-25 mph.
&&
.CLIMATE...
Record highs through Friday:
Date Phoenix Yuma El Centro
---- ------- ---- ---------
Oct 6 105 in 1917 108 in 1980 106 in 1964
Oct 7 104 in 1991 108 in 1987 105 in 1991
Oct 8 104 in 1987 107 in 1996 106 in 1996
Oct 9 103 in 1996 106 in 1996 104 in 1996
Oct 10 105 in 1991 107 in 1991 105 in 1996
Oct 11 102 in 1991 107 in 1950 106 in 1995
&&
.PSR WATCHES/WARNINGS/ADVISORIES...
AZ...Excessive Heat Warning until 8 PM MST Monday for AZZ530>536-538-
539-553>555-559.
Excessive Heat Warning until 8 PM MST Tuesday for AZZ537-540>544-
546-548>551.
CA...Excessive Heat Warning until 8 PM PDT Monday for CAZ562-566-567-
569-570.
&&
$$
DISCUSSION...Benedict
AVIATION...Whittock/Lojero
FIRE WEATHER...Benedict
CLIMATE...18
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