MAY 24 UPDATE: The National Weather Service has issued an Excessive Heat Warning beginning May 27 at 10 a.m. that will run until May 29 at 8 p.m.
The weather service says to expect dangerously hot conditions during that time with a record to near-record high temperatures expected in portions of northwest Arizona, southeast California, and Southern Nevada.
High temperatures will range between 105 to 110 degrees for Las Vegas, Pahrump, Barstow, and Morongo Basin, according to the NWS.
And 110 to 115-degree temperatures for Overton, Lake Mead National Recreation Area, Bullhead City, Needles, and Lake Havasu City. With temperatures of 100 to 105 degrees also exected around Kingman and 115 to 120 degrees for Death Valley National Park.
MAY 23: The National Weather Service has issued an Excessive Heat Watch for May 27 through May 29.
Record to near record high temperatures fo 105 to 110 degrees are expected for Las Vegas, Pahrump, Barstow and the Morongo Basin.
Temperatures are expected to be between 110 and 115 in Overton, Lake Mead National Recreation Area, Bullhead City, Needles and Lake Havasu City.
It will be slightly cooler, between 100 and 105, around Kingman and 115 to 120 in Death Valley.
Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.
Monitor the latest forecasts and warnings for updates on this situation. Be prepared to drink plenty of fluids, stay in an air- conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes.
A Wind Advisory is in place from noon to 8 p.m. on Friday, in addition to a Red Flag Warning during the same time due to elevated fire danger because of the wind and the dry air.
Strong winds from the southwest will develop late this morning and peak in the afternoon and early evening as 45 mph gusts hit Las Vegas.
This delivers the threat of broken branches which may cause spotty power outages.
Blowing dust could briefly reduce visibility, and strong crosswinds will impact high-profile vehicles. Also be on the lookout for debris on the roads.
Wind gusts should drop below 35 mph this evening and below 25 mph after midnight through Saturday. Wind should stay under 20 mph Sunday and Memorial Day Monday.
A ridge of high pressure will deliver a big warm-up next week.
Memorial Day will be in the mid 90s, while 100° is expected for the third time this year on Tuesday.
Temperatures will be rising through the #MemorialDayWeekend in Las #Vegas - so be aware. Cmsr. @MichaelNaft also reminded people it’s illegal to leave a child under the age of 7 alone in a vehicle. Good samaritans are allowed to break a vehicle window if they see a child alone. pic.twitter.com/EXkeSuqgr9
— Clark County Nevada (@ClarkCountyNV) May 22, 2020
Wednesday through Friday should deliver highs from 105° to 110° which is the hottest it's been so far this year.
Record highs will be in jeopardy each of those three days. The forecast heat is 10° to 15° hotter than average for late May.
Long-range forecast models suggest above-average heat will continue into early June, so it looks like triple digits will be the rule rather than the exception. It will important to focus on staying hydrated if you must be outdoors during the daytime heat.