Sunrise 6:09 AM   Sunset 7:48 PM Moonrise 6:55 PM   Moonset 4:57 AM

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FXUS65 KREV 230852 AFDREV

Area Forecast Discussion National Weather Service Reno NV 152 AM PDT Tue Apr 23 2024


SYNOPSIS
Cooler and more active weather arrives today and persists through the end of the week into the weekend. The potential for showers and thunderstorms returns each day through the end of the week. Be aware of rapidly changing conditions if recreating outdoors through the end of the week.

DISCUSSION

Over the next few days, the large scale pattern is in transition from a ridge to a trough. An upper level wave ahead of the main trough is projected to swing across northern CA through the day and kick off showers and thunderstorms along its path. Blended guidance and HRRR in good alignment with 25-40% chances of showers and thunderstorms from the Tahoe Basin northward into Lassen and Washoe counties. There may be a shower or two that kicks off into western NV through the afternoon, but the best ingredients (moisture, instability, and forcing) for stronger, more organized storms will be from the Tahoe Basin northward into NE CA. Showers will kick off earlier than yesterday with DESI indicating some showers as early as 10AM near the Tahoe Basin. If outdoors this week, keep an eye out for rapidly changing conditions along with potential for thunder/lightning, gusty outflow winds, and rain/pellet showers.

Late this evening into early Wednesday morning, another upper level wave sweeps across Mono and Mineral counties producing scattered to widespread showers. Plan on seeing some light snow accumulation for elevations above 9000 feet. Precipitation will continue across the Sierra and western NV as the main trough traverses eastward across southern CA and NV through Thursday afternoon.

Thursday afternoon into Friday another trough (from the Pac NW)
brings the next round of precipitation and an increase in the winds for the region. While other days this week will be typically breezy, Thursday will have the strongest wind gust potential as the upper level winds briefly align with the surface winds to produce enhanced west to southwest winds that will abruptly shift to northerly winds late Friday. The trough on Friday will bring snow levels a touch lower with potential for snow down to around 6-7k feet from Thursday night into early Saturday morning. Most of the heavier precipitation will wrap up Saturday morning with only lingering showers Saturday and Sunday.

Temperatures will be quite a bit colder late this week and into the weekend, with high temps only reaching around 60-65 degrees on Friday for the lower valleys. While temperatures are projected to warm slowly over the weekend, it will still be quite a bit cooler compared to last weekend. I'll most likely be swapping out my layers of sunscreen for a light long sleeve and a cozy sweatshirt for the weekend ahead.

-Edan

AVIATION

Intermittent cloud cover early this morning from a few showers may limit fog formation at KTRK this morning, but can't rule out a bit of patchy fog for a couple of hours right around sunrise. For the rest of the terminals, generally VFR conditions are forecast through 18z today. More active weather arrives after 18z today, and it will remain more unsettled for the rest of the week and into the start of the weekend.

An upper level wave will kick off showers and thunderstorms from KTVL northward to the OR border today with a 20-30% chance of a storm impacting KTRK/KTVL/KAAT. Wednesday the shower/storm potential shifts south with 20-30% chances for showers and thunderstorms at KMMH and KHTH. Shower and thunderstorm potential will stick around from Wednesday into early Saturday morning. Possible impacts due to stronger storms include: rapid wind shifts from gusty outflow winds, localized heavier rain/pellet showers, and lightning.

-Edan


REV Watches/Warnings/Advisories
NV...None.
CA...None.

Sacramento, Sacramento River, California, Tide feet

Sacramento #4
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Tue -- 02:35 AM PDT     0.43 feet Low Tide
Tue -- 06:03 AM PDT     Moonset
Tue -- 06:18 AM PDT     Sunrise
Tue -- 07:12 AM PDT     2.90 feet High Tide
Tue -- 03:48 PM PDT     -0.01 feet Low Tide
Tue -- 04:51 PM PDT     Full Moon
Tue -- 07:51 PM PDT     Sunset
Tue -- 07:57 PM PDT     Moonrise
Tue -- 08:24 PM PDT     2.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Sacramento #4, Sacramento River, California, Tide feet

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