textproduct: Reno
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
* Warmer and drier conditions expected through Thursday with typical afternoon breezes.
* Isolated shower and thunderstorm chances, mainly confined to the Eastern Sierra and Mono County, on Wednesday and Thursday afternoons.
* A significant cooling trend and breezy to windy conditions are forecast for Friday through the upcoming weekend.
DISCUSSION
An elongated area of high pressure will build over the region mid-week, leading to a continued warming trend through Thursday. Today, temperatures across western Nevada valleys will reach the mid-80s to low 90s, with the Lake Tahoe area seeing upper 70s. By Wednesday and Thursday, valley locations are expected to climb into the upper 80s to mid-90s. Isolated shower and thunderstorm chances also return to the forecast Wednesday and Thursday afternoons. There's less than a 10% chance for Wednesday, increasing to 20-30% for Thursday, mainly south of US-50.
The synoptic pattern will undergo a significant change towards the end of the week and into the weekend. We'll have a closed low moving into the Pacific Northwest by Saturday, progressing eastward. This trough will bring a notable cooling trend and increased winds to the region.
Temperatures will begin to drop on Friday, with highs across western Nevada valleys falling into the low 80s to low 90s, and further cooling into the 70s by Saturday and Sunday. Overnight lows will also become noticeably cooler, especially in the Sierra, with some areas potentially seeing lows in the 30s by Sunday night.
Gusty winds are expected Friday, continuing through Saturday, as that trough approaches. West/southwest gusts of 35-40 mph on Friday, and gusts 40-45 mph for western Nevada and the Sierra on Saturday. These winds will be accompanied by continued dry conditions, leading to elevated fire weather conditions. We'll monitor those two days as they gets closer and see if any products are warranted. Then winds Sunday and Monday are expected to diminish as the trough moves eastward, leaving clear skies and cool, dry conditions.
-Justin
AVIATION
VFR conditions prevail today with afternoon wind gusts 10-15 kt between 21-03z this afternoon. Gusts today near KMMH may reach 15-20 kt. HRICH/Justin
REV Watches/Warnings/Advisories
NV...None. CA...None.
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