158 FXUS65 KVEF 062052 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 152 PM PDT Sun Jul 6 2025 .KEY MESSAGES... * Temperatures will continue to warm through the first half of the week as high pressure builds into the region. Extreme Heat headlines will likely be needed for portions of the area by mid- week. * Breezy winds and very low relative humidities will result in increased fire danger across areas north of the Las Vegas Valley. See the Fire Weather discussion below for more details. && .DISCUSSION...through next week. Ridging will continue to push into the area from the southeast, maintaining our warming trend through mid-week. HeatRisk levels will continue to increase, and by Wednesday, major levels (Level 3 of 4) will be present in the Colorado River Valley and lower elevations of central and southern Mohave County. Forecasted temperature values have remained consistent over the past 24 hours. Given this and the forecasted values, Extreme Heat products will likely be needed for the mid-week period. A shortwave passing north of the area through the Great Basin will lower heights a few decameters by Thursday and Friday, allowing temperatures to cool a few degrees. However, ridging is expected to return by the weekend, resulting in increasing temperatures once again. && .AVIATION...For Harry Reid...For the 18Z Forecast Package...Light northeast to east winds will continue through later this morning, followed by southeasterly winds this afternoon. Typical southwest winds develop before sunset this evening. Speeds will remain below 10 kts, although an isolated gust or two to 15 knots will be possible between 21Z and 02Z. VFR conditions under clear skies will persist into Monday. Temperatures will exceed 100 degrees between 21 and 04Z both today and Monday. For the rest of southern Nevada, northwest Arizona and southeast California...For the 18Z Forecast Package...Expect general diurnal wind trends through the TAF period at all regional sites. Winds become gusty out of the south-southeast between 20 and 25 knots at KBIH this afternoon, and gusty winds out of the west between 25 and 30 knots at KDAG this evening. Otherwise, speeds of less than 12 knots are expected. VFR conditions under mainly clear skies will persist through Monday. && .FIRE WEATHER...Low pressure off the southern California coast will result in increased south to southwest winds over far western Nevada and eastern California tomorrow, and to a lesser extent on Tuesday. No increase in moisture will occur with this low, and afternoon RH values will remain in the single digits across much of the area. The strongest winds are forecast over Esmeralda and Central Nye Counties. Given the conditions mentioned above and the fact that fuel moisture levels have reached critical levels, a Fire Weather Watch has been issued for Zone 460, effective from 11 AM to 8 PM tomorrow. The watch does not continue into Tuesday at this time, but only a modest uptick in forecasted wind values will likely result in it being extended. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ DISCUSSION...Planz AVIATION...Planz FIRE WEATHER...Planz For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter