Area Forecast Discussion
Issued by NWS Los Angeles, CA
Issued by NWS Los Angeles, CA
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229 FXUS66 KLOX 240052 AFDLOX Area Forecast Discussion...UPDATED National Weather Service Los Angeles/Oxnard CA 452 PM PST Sat Nov 23 2024 .SYNOPSIS...23/209 PM. Unsettled weather with periods of rain is possible at times for southwest California into next week with more widespread moderate rain possible late Sunday through Tuesday, focused across the Central Coast. && .SHORT TERM (TDY-TUE)...23/207 PM. Relatively benign weather is on tap through Sunday afternoon, although periods of light showers or drizzle are possible just about anywhere at times. Additional rainfall amounts through this period will generally be very light and under a tenth of an inch. Low to moderate confidence Sunday night through at least Tuesday associated with a weak atmospheric river expected to develop across the Central Coast late Sunday and potentially continue through Tuesday. The main uncertainty is with the exact location where exactly the atmospheric river sets up for the longest period of time. As of now, the center of the atmospheric river is most likely to focus on San Luis Obispo and Monterey Counties, although it will likely target areas further south at times, but potentially in a weakened state. Rainfall rates will generally be light to moderate, although occasionally heavier rainfall is possible, especially for the coastal foothills and mountains north of Point Conception. Rainfall totals of 1.5-3 inches will likely be common for San Luis Obispo and Santa Barbara Counties with local 4+ inch amounts possible in the Santa Lucia mountains. Most areas of Ventura and Los Angeles Counties will see less than an inch, perhaps even less than a quarter inch in some areas, with the exception of greater than an inch possible in the higher terrain. Advisory level, minor flooding may be possible, especially across the Central Coast and adjacent mountains. Increased moisture and clouds associated with the atmospheric river will continue the warming trend for overnight lows with below average daytime temperatures likely continuing through Tuesday. .LONG TERM (WED-SAT)...23/206 PM. Below normal forecast confidence for Wednesday through Friday including Thanksgiving with up to a 20 percent chance of rain each day as a compact weakening storm system lurks offshore and may eventually move ashore during this period or weaken and remain mainly offshore. Heading into next weekend we may move into an offshore or Santa Ana type wind pattern with warming and drying trends, although confidence remains low in this time period as well. && .AVIATION...24/0051Z. At 2328Z at KLAX, there was no marine layer nor an inversion. Overall, moderate confidence in 00Z TAF package. Moderate to High confidence in spotty light rain, drizzle for many airfields especially KSBA south through this evening. There is a 30 to 40% chance light rain showers could linger in LA county TAF sites (excluding KPMD and KWJF) after 06z. Rain chances could increase earlier than current forecast for KPRB, KSBP, and KSMX. Moderate confidence in the timing of flight category changes (could be +/- 1-3 hours of current forecasts). KLAX...Moderate confidence in 00Z TAF. Timing of flight category changes could be +/- 1-2 hours of current forecasts. There is a 40% chance light showers could linger around after 06z. No significant east wind component expected. KBUR...Moderate confidence in 00Z TAF. Timing of flight category changes could be +/- 1-2 hours of current forecasts. There is a 30% chance light showers could linger around after 06z. && .MARINE...23/146 PM. For the Outer Waters, moderate to high confidence in current forecast. Through Sunday night, winds and seas will remain below Small Craft Advisory (SCA) levels. For Monday, there is a 30-40% chance of SCA level winds across PZZ670/676. From Monday night through Thursday, winds and seas are expected to be below SCA levels. For the Inner Waters north of Point Sal, there is high confidence in current forecast. Through Thursday, winds and seas are expected to remain below SCA levels, except for a 20%-30% chance of SCA level wind gusts at times Monday evening. For the Inner Waters south of Point Conception, there is high confidence in current forecast. Through Thursday, winds and seas are expected to remain below SCA levels. && .LOX WATCHES/WARNINGS/ADVISORIES... CA...NONE. PZ...NONE. && $$ PUBLIC...Munroe AVIATION...Black MARINE...Sirard SYNOPSIS...Munroe weather.gov/losangeles Experimental Graphical Hazardous Weather Outlook at: https://www.weather.gov/erh/ghwo?wfo=lox