Area Forecast Discussion
Issued by NWS Reno, NV
Issued by NWS Reno, NV
590 FXUS65 KREV 181219 AFDREV Area Forecast Discussion National Weather Service Reno NV 519 AM PDT Fri Apr 18 2025 .UPDATE... Forecast surface winds will remain breezy from the north- northeast this morning across the Basin and Range. Surface winds, however, are not expected to exceed lake wind advisory criteria. Therefore, the lake wind advisory in effect was ended. Be advised that choppy lake surface conditions could continue through the morning. -Amanda && .PREVIOUS DISCUSSION... /issued 127 AM PDT Fri Apr 18 2025/ KEY MESSAGES... * Breezy northerly winds will continue cool and dry conditions through today. * Warmer weather returns for Easter weekend that extends over much of next week with mainly dry conditions and afternoon west breezes. * Look for gradual cooling with increased shower chances by later next week. DISCUSSION... A secondary shot of cooler air spread south and east northerly flow aloft behind a follow-on upper short wave that passed east and south across western NV-Great Basin earlier this morning. If this mornings lows seemed a bit on the chilly, youre not imagining anything. Tightened northerly gradients, reinforced by a 100+ kt jet core, ensured the flow of cooler below average air filtered across much of the western NV. Only areas across northeast CA were mostly spared the below average drop in temperatures regionally. Winds will remain mostly breezy from the northwest north of Highway-50 through this afternoon. Gusty northerly winds will continue today south of Highway-50. Wind will generally shift more from the northeast, and subside going into the evening as gradients loosen with the eastward departure of upper trough. An upstream, quick moving short wave ridge axis will then press into the West Coast overnight into Saturday. This will not only bring drier conditions to the region, but also a quick turn-around in temperatures across much of the region. Daytime highs will push into the 60s for Sierra locations, and low 70s for much of western NV. Blended guidance also shows temperatures slowly warming through mid- week with above average daytime highs 5-10 degrees above seasonal averages with morning lows still dropping in the 30s and 40s. Easter weekend celebrations, however, will be accompanied with abundant sunshine, and warmer above average daytime highs in the 60s and 70s. A couple of weakly forced, quick moving short wave troughs will scrape across the northern portions of CA-NV through Monday-Tuesday. These features will increase the likelihood of westerly afternoon breezes with Sunday afternoon seeing more enhanced breezes. Ensemble multi-model and cluster guidance now show troughing once again deepening over the Eastern Pacific late next week. This will bring about increased shower chances, cooler temperatures, and gusty southwest winds next weekend. Ensemble simulations will of course continue to struggle with timing and magnitude projections this far out in the forecast. -Amanda AVIATION... VFR conditions prevail across the region through this weekend. North-northeast winds gusting 15-20 kts are projected at most main terminals (except mainly northwest at KMMH) through this evening. Lighter winds are expected for the main terminals, except for late day west breezes with gusts 15-20 kt Saturday and possibly up to 25 kt Sunday afternoon. -Amanda && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$