Area Forecast Discussion
Issued by NWS Las Vegas, NV
Issued by NWS Las Vegas, NV
563 FXUS65 KVEF 020819 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 120 AM PDT Sun Jun 2 2024 .SYNOPSIS...Less wind today as a broad area of low pressure moves off to the east. An extensive swath of mostly high clouds will move over the area Monday and Monday night. Hot temperatures will occur Wednesday and Thursday as a strong area of high pressure builds over the region. && .DISCUSSION...Through next Saturday. Clouds moving through central Nevada are associated with the broad trough moving through the northern states. Further south, skies are clear over the Mojave Desert. The trough is forecast to move east today which will translate into less wind and a minor dip in temperatures today. A stronger trough and associated atmospheric river will impact western Washington/Oregon and the northern Rockies with heavy rain today and Sunday. This far south models continue to indicate just a significant swath of mid/high clouds working south, primarily Monday and Monday night. Significant jump in temperatures occurs between Tuesday and Wednesday as strong ridge of high pressure builds over the Intermountain West. Forecast temperatures continue to creep up both days with highs 10- 15 degrees above normal. The probability of Las Vegas hitting 110 degrees Thursday has jumped to 63%. The probability of Furnace Creek (Death Valley NP) hitting 120 degrees stands at 25%. No change is being made to our existing Excessive Heat Watch this morning, but additional areas could be added, as well as heat advisories for some of our higher elevation locations. The temperature forecast becomes a bit more uncertain Friday-Saturday as moisture/potential thunderstorm chances increase as a closed low to our south tries to work its way in. && .AVIATION...For Harry Reid...Southerly winds with gusts 20 to 25 knots are expected through sunset, with gusts ending thereafter. Light winds Sunday morning should go southerly around 10 knots in the afternoon. There will be a risk of easterly components in the morning and early afternoon, which if they occur, should remain less than 10 knots. Winds Monday should be similar to Sunday. No operationally significant clouds or weather expected through Monday, although high clouds are expected to blanket the area late Monday. For the rest of southern Nevada, northwest Arizona and southeast California...South to southwest winds gusting around 25 knots are expected this afternoon, with stronger gusts possible in favored terrain. Slightly weaker winds are expected Sunday, with gusts of 15 to 25 knots, mainly in the afternoon. Monday, winds will increase a little in the southern Great Basin, the Sierra Nevada, and the far western Mojave Desert, and remain similar to Sunday in the rest of the Mojave Desert. No operationally significant clouds or weather expected through Monday, although high clouds are expected to blanket the area from north to south on Monday. && .FIRE WEATHER...An area of extensive cloud cover will work south across the area Monday before starting to thin on Tuesday. Hot conditions will occur Wednesday and Thursday. The temperature forecast becomes a bit more uncertain Friday-Saturday as moisture/potential thunderstorm chances increase as a closed low to our south tries to work its way in. Afternoon minimum relative humidities will be in the single-digits to low-teens today. There will be slightly increased moisture across the southern Great Basin and southeastern California Monday and Tuesday. However, afternoon RH values will remain below 15%. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ DISCUSSION...Pierce AVIATION...Planz For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter