Las Vegans should prepare for a scorcher as temperatures are expected to soar well above normal in the coming days, prompting the National Weather Service in Las Vegas to issue an Extreme Heat Watch for parts of the region. According to National Weather Service forecast, the desert valleys are on tap to experience "Moderate to Major Heat Risk" towards the week's midsection, signaling potentially dangerous conditions for residents and visitors alike.
The serene skies persisting over the weekend will start to see temperatures climbing to troubling heights by Wednesday and Thursday as a ridge of high pressure builds overhead, the National Weather Service in Las Vegas indicates that while today's conditions will remain mostly dry with "sunny skies, temperatures slightly-above normal, and afternoon south-southwesterly breezes," a shift later in the week could see those temperatures jumping to 6 to 8 degrees above seasonal normals, contributing to the "Major" HeatRisk in more desert locales, the Extreme Heat Watch is poised to affect southern Mohave County, southern San Bernardino County, and the Colorado River Valley.
While Monday and Tuesday may offer a brief respite thanks to a passing trough that will moderate temperatures slightly, any relief will be short-lived as wedges of monsoonal moisture may increase humidity, particularly up the Colorado River Valley. However, "Forecast ECMWF ensemble PWATs have diminished slightly, but continue to show 0.50 to 0.75" of PWAT from Laughlin / Bullhead City to Las Vegas," the National Weather Service in Las Vegas reported, keeping rain chances minimal and isolated to the eastern side of Mohave County.
Travelers and locals alike should monitor conditions, especially if planning outdoor activities, aviation forecasts predict gusts around 20 knots for the Harry Reid area and "gusts generally 15-25 knots" for the surrounding regions of Nevada, Arizona, and California; periods of lofted smoke could be seen, but aren't expected to hinder visibility on the ground. As temperatures peak around 107F in parts of the area, the National Weather Service in Las Vegas notes that "spotters are encouraged to report any significant weather or impacts according to standard operating procedures," offering a crucial role in community safety during these extreme conditions.
