textproduct: Reno

KEY MESSAGES

* Temperatures cool down today with renewed wind impacts in the afternoon. * Dry and mild weather forecast through the end of the work week.

* Cooler temperatures and breezier conditions expected over the weekend.

DISCUSSION

A Pacific upper low resides just off the coast of WA/OR early this morning. Forecast guidance projects this feature moving onshore and across the NW CONUS today. With this setup above, a dry cold front will pass through the region today ending our three-day streak of record breaking warmth. However even with this cooling, daytime high temperatures will stay around 5-10 degrees above normal with the NE CA and W NV valleys seeing highs in the upper 70s to mid-80s and the Sierra communities being in the upper 60s to lower 70s. Winds also increase with the cold front passage as west/northwest gusts up to around 30-40 mph are to be expected this afternoon. A Lake Wind Advisory is in effect for W NV lakes including Pyramid Lake today (please see the Lake Wind Advisory product for more detail). Other area lakes (including Lake Tahoe) expect winds below advisory criteria though choppy lake conditions could still be possible this afternoon. Please be prepared for these conditions or consider postponing maritime activities today. Winds from the frontal passage today may also cause localized blowing dust in portions of W NV near desert areas and sinks, which could reduce visibilities.

For Thursday and Friday, models give the CWA a westerly zonal flow aloft following the aforementioned low's departure to the east. Dry conditions will prevail on both days as a result with the region generally seeing highs in the 70s and 80s. Typical afternoon zephyr breezes look to be in store on both days as well with gusts up 15-25 mph on Thursday and 20-30 mph on Friday.

Over the weekend, model guidance shows a PacNW trough crossing into the NW CONUS on Saturday. This feature deepens on Sunday as it moves into the Rockies, placing the CWA underneath its rear portion. This pattern will bring a cooler air mass from the north into the CWA, dropping temperatures once again to almost 5-10 degrees below seasonal normals by Sunday. Currently, the forecast shows area highs in the 60s and 70s on Saturday and then between the upper 50s and upper 60s on Sunday. While dry conditions look likely to continue over the weekend, there also is some potential for increased northerly winds late Saturday into Sunday with gusts up to around 30- 40 mph possible. This could cause some recreational and travel impacts to the region, so please watch for further forecast updates.

Going into Monday through the middle of next week, long term guidance has a ridge building over the W CONUS. This will allow temperatures to begin a warming trend with the dry pattern persisting at least until next Wednesday. -078

AVIATION

VFR conditions are anticipated for all area TAF sites today and tonight. LLWS is expected to last in the Sierra and Sierra Front through at least 13/15Z this morning. West/northwest (south at KTVL) afternoon winds will gust up to between 25-30 kts between 13/18Z- 14/03Z with a dry cold front passage. -078

REV Watches/Warnings/Advisories

NV...Lake Wind Advisory from 1 PM this afternoon to 11 PM PDT this evening NVZ001.

Lake Wind Advisory from 11 AM this morning to 8 PM PDT this evening NVZ004.

CA...None.