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

* A cool start to the week will be followed by a gradual warming trend accompanied by generally dry conditions and lighter winds.

* An upper level low will move into the area on Wednesday and Thursday. This will result in cooler temperatures, higher winds, and low chances for showers near the Oregon border.

DISCUSSION

With the low exiting the area today, we have calmer winds and cooler temperatures compared to Saturday. Current wind gusts as of noon are between 40-50 mph on the ridges and 30-40 mph for windier locations in the eastern Sierra and western NV. These winds will continue to subside this afternoon and tonight. Clear skies, calm winds, and a dry airmass will allow for overnight lows to drop well into the 40s for lower elevations in western NV, and mostly 30s in the Sierra. Colder Sierra valleys could even dip into the 20s.

We'll maintain a long-wave trough pattern over the western US for most of the upcoming week. Models and ensembles show that another upper low from western Canada will dive into northern CA on Wednesday and Thursday. This low pressure then moves east on Friday. This will introduce a very slight 10-15% chance of showers on Wednesday and Thursday afternoon for Lassen and northern Washoe counties, and the Surprise Valley. This will additionally kick up the winds on Tuesday and Wednesday, with Wednesday being the windiest day this week. For temperatures, highs will be below normal on Monday, as well as Wednesday and Thursday due to the upper low. Tuesday, as well as Friday into next weekend will have near normal temperatures for the third week of September. -McKellar

AVIATION

Winds will become more west to northwest at most terminals before decreasing after 02-04Z this evening. FL100 wind gusts up to 45 kt will continue to produce areas of turbulence and LLWS this until around 00Z.

Otherwise, VFR conditions will prevail for the upcoming week, with lighter winds (gusts below 20 kt) at the main terminals for Monday and Tuesday. A bit more wind may arrive Wednesday with a weak low pressure approaching northern CA, although confidence is low. -MJD/McKellar

REV Watches/Warnings/Advisories

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

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