Irwindale, California 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for 2 Miles ESE Irwindale CA
National Weather Service Forecast for:
2 Miles ESE Irwindale CA
Issued by: National Weather Service Los Angeles/Oxnard, CA |
Updated: 2:50 pm PST Dec 29, 2024 |
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This Afternoon
Sunny
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Tonight
Mostly Clear
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Monday
Sunny
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Monday Night
Mostly Clear
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Tuesday
Mostly Sunny
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Tuesday Night
Mostly Clear
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New Year's Day
Sunny
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Wednesday Night
Mostly Clear
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Thursday
Sunny
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Hi 67 °F |
Lo 46 °F |
Hi 69 °F |
Lo 45 °F |
Hi 69 °F |
Lo 47 °F |
Hi 76 °F |
Lo 49 °F |
Hi 77 °F |
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Air Quality Alert
This Afternoon
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Sunny, with a high near 67. Southwest wind around 5 mph. |
Tonight
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Mostly clear, with a low around 46. Calm wind becoming east southeast around 5 mph after midnight. |
Monday
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Sunny, with a high near 69. North wind 5 to 10 mph. |
Monday Night
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Mostly clear, with a low around 45. North northeast wind around 5 mph. |
Tuesday
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Mostly sunny, with a high near 69. North northeast wind 5 to 10 mph. |
Tuesday Night
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Mostly clear, with a low around 47. |
New Year's Day
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Sunny, with a high near 76. |
Wednesday Night
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Mostly clear, with a low around 49. |
Thursday
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Sunny, with a high near 77. |
Thursday Night
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Mostly clear, with a low around 51. |
Friday
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Mostly sunny, with a high near 74. |
Friday Night
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Partly cloudy, with a low around 49. |
Saturday
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Mostly sunny, with a high near 71. |
Forecast from NOAA-NWS
for 2 Miles ESE Irwindale CA.
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Weather Forecast Discussion
967
FXUS66 KLOX 292358
AFDLOX
Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
358 PM PST Sun Dec 29 2024
.SYNOPSIS...28/726 PM.
An extended period of gusty northerly winds is expected through
early next week, then switching to moderate Santa Ana winds on
New Years Day through the end of the week. Slightly cooler
temperatures Sunday with some light rain possible along the
Central Coast in the afternoon. Then turning warmer Monday through
the rest of the next week especially mid week when the Santa Ana
winds arrive and high pressure builds over the area.
&&
.SHORT TERM (TDY-WED)...29/121 PM.
Overall, 12Z models in good synoptic agreement through the short
term period. At upper levels, a couple of weak troughs will zip
across the area tonight through Tuesday then ridge will build
offshore on Wednesday. Near the surface, northerly flow will
develop tonight with north to northeast flow forecast to continue
through Monday through Wednesday.
For this afternoon and tonight, the tail end of a weak front will
zip across the area. Not much "oomph" with this front, so there
will be some light measurable rain across the Central Coast this
afternoon and evening, but nothing really expected south of Point
Conception. Amounts, if any, will be under 0.10 inches for most
areas, but the far northwest corner of SLO county could receive
around 0.25 inches. In the wake of the front, northerly flow will
noticeably increase this evening and overnight. The surface
pressure gradients are forecast to be rather healthy and there is
decent upper level support. Additionally, the HREF data indicates
decent probabilities of gusts 30-50 MPH. So, will expect
advisory-level northerly winds across the I-5 Corridor, Santa
Ynez Range, Santa Clarita/San Fernando Valleys and the interior
mountains of SLO and SBA counties. So, WIND ADVISORIES have been
issued for these areas through 1000 AM Monday (when the winds
should subside). With the developing northerly winds and passing
front, the marine layer will be rather chaotic tonight. However,
there is a decent chance of stratus/dense fog across the LAX
Basin.
For Monday through Wednesday, attention will be on the offshore
winds. During the day on Monday, the winds will "relax" in the
afternoon and evening. However, by Monday night, the north to
northeast flow will increase across the area with the winds
continuing through Wednesday. Based on pressure gradients and
upper level support, weak to moderate Santa Ana winds are
expected. The strongest winds will occur in the usual Santa Ana
wind corridors of eastern Ventura/western LA counties and
advisories will likely be needed during this time period.
Elsewhere, winds should remain below advisory levels, but will
need to be monitored closely. With the offshore low and upper
level ridge gradually building offshore, a warming trend is
expected for most areas with temperatures in the 70s to around 80
by Wednesday west of the mountains. As for clouds, the offshore
flow will keep the area stratus-free, but varying amounts of high
clouds will keep skies ranging between mostly clear and partly
cloudy.
.LONG TERM (THU-SUN)...29/121 PM.
For the extended, models continue on the same synoptic page. At
upper levels, ridge will peak in strength on Thursday then a
series of troughs will move across the West Coast Friday through
the weekend. Near the surface, weak offshore flow will continue
through Friday then weak diurnal flow is expected Saturday and
Sunday.
Forecast-wise, no significant issues are expected through the
period. Thursday will be the warmest day with ridge peaking in
strength and weak offshore flow. High temperatures west of the
mountains will top out in the 70s to lower 80s with temperatures
in the 60s across interior sections. There will be some locally
gusty northeast winds lingering, but nothing expected to reach
advisory levels.
For Friday through the weekend, the return of weak diurnal flow
and the passing of the upper level troughs will bring cooler
temperatures to all areas. For Friday night, NBM indicates a
chance of some light rain across SLO county. Otherwise, dry
conditions are expected for the area through the weekend.
&&
.AVIATION...29/2357Z.
At 2326Z at KLAX, the marine layer was around 1100 ft deep. The
top of the inversion was at 2500 ft with a temperature of 16 C.
High confidence in TAFs for KPMD and KWJF. Wind gusts may be off
by 5 kt during peak winds.
Low confidence in remaining TAFs due to uncertainty in timing and
minimum flight cats. Flight category timing may be off by 3
hours. At KPRB, KSBP, and KSMX there is a 20-40% chance for LIFR
to VLIFR conds between 03Z and 16Z, with KPRB being the highest
chance and longest duration. -RA or -SHRA is possible thru 02Z at
KSMX, KSBP, and KPRB. There is a 20% chance for IFR conds or
lower at KSBA between 12Z and 17Z. There is a 20-40% chance of
VLIFR conds for KOXR, KCMA, KSMO, KLAX, and KLGB between 07Z and
17Z, with lowest chances at KCMA. There is a 30-40% chance of
VLIFR to LIFR conds at KBUR and KVNY between 08Z-17Z. There is
also a 30-40% chance for VFR conds to prevail at these sites.
KLAX...Low confidence in TAF. Flight category changes may be
off by 3 hours. There is a 30% chance for cigs VV001-VV002 and
vsbys below 1/2SM between 07Z and 18Z. There is a 20% chance for
an east wind component of 8 kts between 07Z and 16Z.
KBUR...Low confidence in TAF. There is a 40% chance of VLIFR to
LIFR conds between 08Z and 17Z. There is also a 30% chance for VFR
conds to prevail through the period.
&&
.MARINE...29/119 PM.
Most of the coastal waters will experience SCA winds or seas
through tonight save immediate coastal waters from Santa Monica
south to Orange County. Isolated gusts to 35 kts possible near the
Channel Islands through early this evening, repositioning to the
Outer Waters late tonight through Tuesday night with a 20 percent
chance of upgrading current SCA to a Gale Warning for these
areas.
Breezy offshore winds are expected each morning Tuesday and
Wednesday mornings with a 20 percent chance of reaching SCA conds
for the Inner Waters from Santa Monica to Point Mugu.
There is a 20-30 percent chance of SCA Seas returning to the Outer
Water Thursday or Friday and with a 80-90 percent chance for next
weekend.
Patchy dense fog may return for the southern inner waters tonight
into Monday morning before offshore flow likely eliminating this
threat.
&&
.FIRE WEATHER...29/345 PM.
***RED FLAG WARNINGS IN EFFECT TUESDAY INTO WEDNESDAY FOR PORTIONS OF
THE LOS ANGELES AND VENTURA COUNTY MOUNTAINS AND VALLEYS DUE TO
GUSTY NORTH TO NORTHEAST WINDS AND LOW HUMIDITY, WITH FIRE
WEATHER WATCHES IN EFFECT WEDNESDAY NIGHT INTO THURSDAY***
***FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY INTO
THURSDAY FOR THE VENTURA/MALIBU COASTS DUE TO GUSTY NORTH
TO NORTHEAST WINDS AND LOW HUMIDITY***
For today, northwest to north-wind-prone locations will likely
experience elevated to brief critical fire-weather conditions from the
Santa Barbara County mountains to the high terrain of Ventura and
Los Angeles counties, especially near the Interstate 5 corridor
and San Gabriels, extending into the Antelope Valley. Wind gusts
of 30 to 50 mph will occur in these areas through this evening, with
humidities in the 6 to 20 percent range. Locally enhanced
sundowner winds will focus across the Santa Ynez Range this afternoon
into tonight, but humidities will remain elevated.
The weather pattern this week is expected to become favorable
for elevated to critical fire-weather conditions across Santa Ana
wind-prone areas of Los Angeles and Ventura Counties, as well as
portions of Santa Barbara County prone to north-wind
enhancements. This week, an upper-level ridge is forecast to
gradually build along the Pacific coast to the west of a large
upper trough encompassing much of the central and eastern states.
Correspondingly, surface high pressure strengthening over the
Great Basin will facilitate increasing offshore flow amid slight
upper level wind support, which will combine with unseasonably
warm temperatures assisted by the building upper ridge to produce
the increased fire-weather risk. LAX-Bakersfield offshore
gradients are currently forecast to reach 5-7 mb starting Monday,
with LAX- Daggett offshore gradients reaching 4-5 mb starting
Tuesday. Given the enhanced northerly pressure gradients, wind
directions could be 10-20 degrees more northerly than easterly for
this event compared to other November and December 2024 events,
especially early on for this next event.
Areas with highest confidence of reaching Red Flag thresholds
have been upgraded to Red Flag Warnings for the Tuesday into
Wednesday time period. With less confidence in the strength
of offshore winds Wednesday night into Thursday, this time
frame has been kept as a Fire Weather Watch for now. In addition,
there is still some uncertainty in the strength and duration of
offshore winds for the coastal areas of Ventura county, Malibu,
and central Ventura valleys (including the Highway 126 corridor
from Santa Paula to Piru), resulting in a continuation of the
Fire Weather Watch for these areas.
Regarding alternate scenarios, there is a 30-40% chance for fire-
weather headlines to be expanded to include the eastern San
Gabriels, northwest Los Angeles County Interstate-5 corridor, and
northern Ventura County mountains. In addition, the enhanced
northerly gradients may tend to expand the fire-weather risk to
the east of areas more typically prone to a moderate Santa Ana
wind event, to also include areas from Hollywood to Beverly Hills
and Santa Monica -- Confidence: lower chance at 30-40% for fire-
weather headlines. Elevated to brief critical fire-weather
conditions will also be a concern farther west across the San Luis
Obispo County and Santa Barbara County mountains and foothills,
especially including the Santa Ynez range when northerly pressure
gradients are strongest on Monday and Tuesday, though humidities
will likely remain elevated -- Confidence: even smaller but non-
zero chance at 20% for fire-weather headlines.
&&
.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory in effect from 9 PM this evening to 10 AM PST
Monday for zones 88-342-345-350-352-353-372-375>378-381. (See LAXNPWLOX).
High Surf Advisory in effect until 3 AM PST Tuesday for zones
340-346. (See LAXCFWLOX).
Wind Advisory in effect until 10 AM PST Monday for zones
349-351. (See LAXNPWLOX).
Beach Hazards Statement in effect until 9 PM PST this evening
for zones 349-350. (See LAXCFWLOX).
High Surf Advisory in effect until 9 PM PST Monday for zone
354. (See LAXCFWLOX).
High Surf Advisory in effect until 3 AM PST Monday for zones
362-366. (See LAXCFWLOX).
Fire Weather Watch in effect from Tuesday morning through
Thursday evening for zones
288-354-355-358-362-369>372-374>376-379. (See LAXRFWLOX).
PZ...Small Craft Advisory in effect until 9 PM PST Monday for
zones 645-650. (See LAXMWWLOX).
Small Craft Advisory in effect until 3 AM PST Monday for zone
655. (See LAXMWWLOX).
Small Craft Advisory in effect until 9 PM PST Tuesday for
zones 670-673-676. (See LAXMWWLOX).
&&
$$
PUBLIC...Thompson
AVIATION...Lewis
MARINE...Munroe
FIRE...Gomberg/Cohen
SYNOPSIS...MW
weather.gov/losangeles
Experimental Graphical Hazardous Weather Outlook at:
https://www.weather.gov/erh/ghwo?wfo=lox
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