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Area Forecast Discussion
Issued by NWS Las Vegas, NV
Issued by NWS Las Vegas, NV
905 FXUS65 KVEF 290734 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 1234 AM PDT Sat Jun 29 2024 .SYNOPSIS...Expect mostly sunny skies, above-average temperatures, and breezy southwest winds today. On Sunday, monsoonal moisture moves back into Arizona, bringing slight chances for thunderstorms in Mohave County at least through Wednesday. Elsewhere, temperatures continue to climb, likely reaching dangerous levels late in the week. && .SHORT TERM...through Sunday night. Midnight satellite loop showed clear skies areawide. Surface obs showed light winds, low humidity, and hot temperatures. The main feature to watch this weekend will be the complex low pressure area spinning in the Gulf of Alaska. A trough was deepening and moving east from 140W as seen on water vapor imagery. This feature will pass by to our north today and Sunday, kicking up winds but not kicking down temperatures. Winds will not be strong enough to justify any headlines, but will increase fire danger since much of the region has been hot and dry for quite a while (recent scattered thunderstorms notwithstanding). Meanwhile, despite the presence of the trough, temperatures will rise a degree or two today and again on Sunday as high pressure centered over the Gulf Coast states bulges westward. Moisture will be very limited as the trough keeps a westerly component to the flow over most of our area, keeping thunderstorm chances limited to eastern Mohave County. Smoke and haze from the fires in central California will be advected over Inyo County and perhaps farther east through the weekend. .LONG TERM...Monday through Friday. Next weeks focus will shift towards increasingly dangerous heat as a large high pressure system develops off the Pacific Coast and shifts inland by midweek. With heights rising above normal during the climatologically hottest time of the year - very hot, and dangerous, heat is expected for the middle and later parts of the week. In terms of Heat Risk, widespread moderate risk will prevail Monday and Tuesday, with High and Extreme Heat risk filling into the Mojave Desert Wednesday through Friday. This magnitude of heat is dangerous to everyone and proper safety precautions are recommended including limiting time outdoors and staying hydrated. Outside of the very hot weather, low grade monsoonal moisture will persist in northwest Arizona Monday and Tuesday, before tending to shift south and east by later in the week as the flow aloft turns more northwesterly. && .AVIATION...For Harry Reid...Light southerly to southwesterly winds will continue through mid-morning when winds will become more southerly and start picking up. Winds will shift back to a more southwesterly direction during the early afternoon with 20 to 25 knot wind gusts continuing into the evening hours. Wind gusts will drop off after sunset with winds continuing to maintain their southwesterly direction through the evening hours before becoming light and variable overnight. For the rest of southern Nevada, northwest Arizona and southeast California...KHND and KVGT will follow similar trends to KLAS, with light winds becoming more southerly and picking up around mid- morning. 15 to 25 knot southerly wind gusts will continue at these TAF sites through sunset when gusts will drop off but winds will continue to maintain a more southerly to southwesterly direction. 8 to 12 knot southerly winds will pick up later this morning/early this afternoon at the Colorado River Valley TAF site where 20 to 25 knot southerly wind gusts will continue through sunset before dropping off. KDAG will favor a westerly direction with 20 to 25 knot wind gusts dropping off early this morning before returning in the early afternoon. Light and variable winds will pick up and settle in from the southeast during the early afternoon hours at KBIH. These breezy southeasterly winds will briefly become southwesterly later this afternoon with winds decreasing and swinging to the northwest around sunset. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ SHORT TERM...Morgan LONG TERM...Outler AVIATION...Stessman For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter