949 FXUS65 KVEF 070528 AFDVEF Area Forecast Discussion National Weather Service Las Vegas NV 1028 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 06Z Forecast Package...Expect south to southwest winds overnight, shifting to light easterly Monday morning. Winds should become southerly in the afternoon with gusts of 15 to 20 knots, although the timing of the wind shift is uncertain. Around sunset, winds should go back to the typical south to southwest drainage direction. VFR conditions under mostly clear skies. Temperatures will exceed 100 degrees between 20Z and 04Z. For the rest of southern Nevada, northwest Arizona and southeast California...For the 06Z Forecast Package...Expect breezy south to southwest winds at most sites on Monday, with the strongest gusts of 30 to 40 knots over the Sierra crest and the mountains of Death Valley, decreasing around sunset. VFR conditions under mainly clear skies. && .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, the Fire Weather Watch has been upgraded to a Red Flag Warning for Zone 460, effective from 11 AM to 8 PM Monday. Winds will also be close to Red Flag conditions on Tuesday. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && $$ DISCUSSION...Planz AVIATION...Morgan FIRE WEATHER...Planz/Morgan For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter