906 FXUS65 KREV 100930 AFDREV Area Forecast Discussion National Weather Service Reno NV 230 AM PDT Tue Jun 10 2025 .KEY MESSAGES... * Isolated thunderstorms are possible from NE California to near the Oregon border, and in Mineral County this afternoon. * Hot and dry weather will prevail this week with slightly cooler temperatures by the weekend. * Wind impacts to travel and recreation likely this week with periods of elevated to critical fire weather conditions in the afternoons. && .DISCUSSION... Broad high pressure across the West will dampen today as weak low pressure traverses the Pacific Northwest. Dry southwest flow will overspread the region in response, scouring upper moisture and reducing thunderstorm chances this afternoon. The most likely area for isolated storms is from northern Lassen County into the Surprise Valley and far northern Washoe County where odds reach 30-60%. Strong outflow gusts will serve as the main concern, accompanied by small hail, brief downpours, and lightning. A stray thunderstorm or two cannot be ruled in Mineral County this afternoon, although far lesser odds of 5-10% resides here. Summer-like heat will continue through Wednesday, featuring daytime highs in the 80s and 90s. However, today begins a steady cooling trend that culminates in more typical 70 and 80 degree highs by Friday. Breezy winds are expected each afternoon this weekend, peaking on Friday and Saturday. These windier conditions may impact travel and recreation, as well as elevate fire concerns across the region (see Fire Weather discussion below). Otherwise, plan on typical June warmth and dry weather this week and over the weekend. -Salas && .AVIATION... Shallow fog may result in periods of IFR/LIFR conditions at KTRK through 14-15Z this morning. A drier weather pattern settles in today, result in widespread VFR conditions with breezy westerlies (G20-30kts) in the afternoon. FL100 winds marginally increase to around 25 kts throughout the day, which may be sufficient for low- end LLWS and mountain wave turbulence impacts for Tahoe and Sierra Front terminals this evening. -Salas && .FIRE WEATHER... A ridge breakdown sequence that begins today will result in elevated to locally critical conditions below 6000` each afternoon through Thursday. Red Flag conditions are possible along the Sierra Front and across western Nevada Friday and Saturday afternoons when winds are strongest. As winds increase, there may be flare-ups of holdover ignitions from recent lightning. * Today through Thursday: RH reductions to 10-15% is expected this afternoon for elevations generally below 6000` with further drying supporting afternoon RH`s of 5- 12% from Wednesday into the weekend. While winds will likely remain below Red Flag criteria until Friday, SW/W gusts of 20-30 mph (think our typical zephyr breezes) will overlap with very low afternoon RH today through Thursday. Poor overnight recoveries will compound fire concerns across western Nevada where RH struggles to exceed 30-40%. * Friday and Saturday: Winds will likely be strongest Friday and Saturday afternoons, elevating the fire weather threat into Red Flag conditions along the Sierra Front and much of western Nevada. There is still some uncertainty in the magnitude of the winds on both days, but confidence is increasing in seeing at least a 3-6 hour period of critical conditions each respective afternoon. -Salas && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$