Area Forecast Discussion
Issued by NWS Reno, NV
Issued by NWS Reno, NV
257 FXUS65 KREV 010856 AFDREV Area Forecast Discussion National Weather Service Reno NV 156 AM PDT Mon Jul 1 2024 .SYNOPSIS... * Near to slightly above average temperatures and breezy afternoon winds are in store today. * Steady, widespread warming this week will foster an extended period of well above normal temperatures from midweek through the weekend. * A moderate to locally major heat risk is expected for the July 4th holiday with the major HeatRisk expanding over the holiday weekend. && .DISCUSSION... Near to slightly above normal temperatures will lead-off this week with today`s daytime highs in the low-80s for Sierra communities and low to mid 90s for western Nevada valleys. Breezy northwest to north winds will arrive in the afternoon for western Nevada with occasional gusts to 25 mph expected into the early evening. An upper, eastern Pacific ridge will gradually amplify as it translates eastward towards the western states, promoting a steady warming trend this week and into the weekend. As a result, temperatures will become 10-15 degrees above normal from midweek onward with lower western Nevada locales (i.e. the Greater Reno- Carson City-Minden area, Fallon, Lovelock) flirting with triple digit daytime highs on the July 4th holiday. Friday through Sunday will feature the hottest conditions with highs in the 90s for Sierra communities and upper 90s to 105F for western Nevada valleys. To compound the heat risk, nighttime lows in the mid 60s to 70F will provide little to no relief from the daytime heat from Thursday through Sunday. As such, a prolonged period of moderate to major HeatRisk will exist from midweek onward for portions of the Sierra and a vast majority of western Nevada. It is highly encouraged to consider the upcoming heat risk when making plans for this week and weekend, especially for Independence Day, and to take your heat safety precautions! On a more positive note, mostly clear skies remain favored for the evening of July 4th so anticipate excellent firework viewing conditions! -Salas && .AVIATION... Widespread VFR conditions and breezy NW-N surface winds in the afternoon (up to 20 kts) are expected today. E-NE FL100 winds will increase to 20-25 kts from the Tahoe Basin southward tonight, perhaps supporting light to moderate turbulence from the Sierra crest westward into California between 06-12Z tonight. VFR conditions will largely prevail this week with a steady warming trend possibly creating density altitude issues later this week and weekend. -Salas && .FIRE WEATHER... Breezy northwest to north winds of 10-15 mph with gusts to 25 mph will couple with daytime humidity of 10-15% and abundant sunshine this afternoon for eastern Lassen County into western Nevada along and north of I-80. As such, a brief 2-4 hour period of elevated to locally critical fire weather conditions will evolve this afternoon for this region. Furthermore, isolated lightning did occur in this area during the late afternoon yesterday so today`s fire weather conditions may exacerbate any holdover ignitions. The remainder of the week will feature widespread warming, yielding a prolonged period of above average temperatures, very low daytime humidities, poor overnight humidities, and deep mixing heights. -Salas && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$