textproduct: Reno

KEY MESSAGES

* Seasonably warm and mostly dry conditions prevail through Friday, with only isolated showers and thunderstorms.

* Afternoon breezes will be slightly higher today and Friday, leading to elevated fire weather concerns, and minor impacts to aviation and recreation.

* Monsoonal moisture increases this weekend and next week, renewing chances for showers and thunderstorms, with potential for localized heavy rain.

DISCUSSION

Today, a broad upper-level ridge remains centered over the central US, with our region under weak southwest flow aloft. This pattern, combined with residual moisture, will support isolated, terrain- driven convection, primarily over Mono/Mineral county and the NV Basin & Range. Although POP remains low around 10-15%. Temperatures will be seasonably warm, with highs in the 80s and 90s for most valleys, and 70s to low 80s for Sierra communities. Afternoon breezes will be slightly elevated, with west to southwest gusts of 20-30 mph (locally up to 35 mph) across far NE CA and NW NV. These winds, coupled with low RH (10-15%), will lead to elevated fire weather concerns through Friday, especially over NE CA.

By Saturday, monsoonal moisture is expected to begin filtering back into the region from the south and east. This will lead to an expansion of afternoon and evening shower and thunderstorm chances, although still low at 10%. Temperatures will remain seasonably warm, with highs in the 80s and 90s for valleys, and 70s to low 80s for the Sierra.

Sunday through Wednesday, monsoonal moisture will be well-established across much of the CWA, leading to daily chances for afternoon and evening showers and thunderstorms. The highest POPs will be over the Eastern Sierra towards the NV Basin and Range with a 20-30% chance of rain per NBM guidance. Storm chances will be at 10-20%. While widespread heavy rainfall is not expected, localized heavy downpours and flash flooding are possible, especially over sensitive locations such as burn scars, steep terrain, and other flood prone areas. Temperatures will remain seasonably warm, with highs generally in the 80s and 90s, and overnight lows in the 50s and 60s. Anyway, the overall pattern suggests a continuation of typical summer monsoonal weather. Even though, there is plenty of uncertainty with how far the push of moisture will be.

-HC

AVIATION

VFR conditions prevail through the region. There is a 5-15% chances for showers near KMMH/KHTH. Otherwise, it will be dry, except for a stray shower anywhere else. Winds will be light and VRB overnight and early morning, then from the west and southwest 5-15 kts and gusts up to 25-30 kts.

-HC

REV Watches/Warnings/Advisories

NV...None. CA...None.