Area Forecast Discussion
Issued by NWS Las Vegas, NV

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000 FXUS65 KVEF 200314 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 714 PM PST Mon Feb 19 2018 .SYNOPSIS...Winds will settle down this evening, and isolated snow showers will dissipate shortly after sunset. Much colder air will bring below normal temperatures through the rest of the week, with a hard freeze expected in Kingman and surrounding areas Wednesday morning. Precipitation chances will return to the Sierra on Wednesday, and to much of the Mojave Desert and southern Great Basin Thursday night. && .UPDATE...Winds continue to decrease across the area. Allowed portions of the warnings and advisories expire at 4 pm and plan on allowing the Inyo, Nye and Esmeralda segment expire at 10 pm on schedule. Clouds associated with the exiting upper trough will continue to gradually decrease the rest of the night while there could still be some light showers over Lincoln and Mohave Counties. && .PREV DISCUSSION... 231 PM PST Mon Feb 19 2018 .SHORT TERM...through Tuesday. Winds are diminishing in all zones except the Barstow area and the Morongo Basin. When the first segment expires at 4 PM, plan to cancel the rest of the wind products, unless the aforementioned areas need to be extended. Spotty snow showers will dissipate shortly after sunset, followed by a lot of the clouds as surface temperatures fall and the column stabilizes. Next concern is unseasonably cold temperatures. Freeze Risk grids for the Kingman area depict a greater risk Wednesday morning than tomorrow morning; however, since temperatures have not been this cold in about two months, decided to upgrade the Hard Freeze Watch to a Warning for both days. .LONG TERM...Wednesday through Monday. Next up in this winter 2018 parade of storms drops into the area on Wednesday. This one is forecast to remain weak with limited moisture, bringing an increase in shower chances to mainly the Sierra and for all the area, keeping temperatures from rebounding much. Wednesday`s system moves east by early Thursday and then is quickly followed by a stronger system that moves over the area Thursday and lingers through Friday. This one is expected to bring a much more widespread chance of showers but overall, moisture is limited and precipitation amounts are expected to be light. More chilly air accompanies this one and will result in well below normal conditions continuing right up to the weekend. Gusty winds should spread over much of the area Thursday and Friday. Which brings me to the weekend forecast. Right now, Saturday looks like a quiet weather day in between systems. The result would be dry, cool weather but several degrees warmer than Friday. Mostly sunny skies and light winds will make it feel a little warmer as well. Very low confidence in whether the next storm will arrive to affect the end of the weekend weather on Sunday so I will spare you the not-too-clear details for now. && .AVIATION...For McCarran...Clouds will scatter out shortly after sunset, and northwest winds will diminish and back around to more westerly later in the evening. Winds will return to a more typical diurnal pattern of light easterly during the day and southwesterly during the night for Tuesday and Wednesday. For the rest of southern Nevada, northwest Arizona and southeast California...Winds will diminish this evening, and clouds and spotty snow showers will decrease shortly after sunset. Much quieter weather is expected tomorrow and Wednesday, except for precip chances returning to the Sierra on Wednesday as the next storm system approaches. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ UPDATE...Harrison SHORT TERM/AVIATION...Morgan LONG TERM...Salmen For more forecast information...see us on our webpage: http://weather.gov/lasvegas or follow us on Facebook and Twitter

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