551
FXUS65 KVEF 181151
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
451 AM PDT SUN MAY 18 2025
SYNOPSIS
BREEZY NORTHWEST WINDS CAN BE EXPECTED THE NEXT COUPLE
DAYS WITH SEASONABLY COOL TEMPERATURES FOR MID-MAY. OTHERWISE, DRY
CONDITIONS RESUME WITH TEMPERATURES CLIMBING WELL ABOVE NORMAL BY
TUESDAY ONWARD.
SHORT TERM
THROUGH MONDAY NIGHT.
FAIRLY POTENT TROUGH WHICH BROAD WIDESPREAD STRONG WINDS, DUST,
AND A FEW THUNDERSTORMS TO THE REGION SATURDAY IS NOW EXISTING
INTO THE FOUR CORNERS REGION ENROUTE TO THE HIGH PLAINS. OUR
REGION WILL REMAIN IN A COOL NORTHWESTERLY FLOW TODAY AND MONDAY,
WITH ELEVATED NORTHWESTERLY WINDS EXPECTED. A SECONDARY
DISTURBANCE DROPPING DOWN THE BACKSIDE OF OUR EXITING TROUGH WILL
STIR UP NORTH WINDS DOWN THE COLORADO RIVER VALLEY AND NORTHWEST
ARIZONA MONDAY BUT WINDS WILL REMAIN GENERALLY BELOW ADVISORY
LEVELS WITH NO PRECIPITATION EXPECTED.
LONG TERM
TUESDAY THROUGH SATURDAY.
A RIDGE BUILDS OVER THE WESTERN UNITED STATES STARTING ON TUESDAY AS
LOW PRESSURE MOVES INTO THE GREAT PLAINS. SURFACE TEMPERATURES WILL
INCREASE WITHIN THE FORECAST AREA IN RESPONSE TO RISING HEIGHTS
ALOFT. THE PROBABILITY OF REACHING 100 DEGREES IN LAS VEGAS ON
THURSDAY SITS AT 75 PERCENT. ON THURSDAY AND FRIDAY, EXPECT
WIDESPREAD MODERATE (LEVEL 2) HEATRISK ACROSS THE DESERT VALLEYS, A
LEVEL OF HEAT THAT AFFECTS ANYONE SENSITIVE TO HEAT, ESPECIALLY
THOSE WITHOUT ADEQUATE COOLING OR HYDRATION. THERE IS ALSO THE
POTENTIAL FOR SOME MAJOR (LEVEL 3) HEATRISK ALONG THE COLORADO RIVER
AS WELL AS DEATH VALLEY, WHICH AFFECTS ANYONE WITHOUT EFFECTIVE
COOLING OR HYDRATION. KNOW WHERE TO FIND THE NEAREST COOL LOCATION
AND BRING PLENTY OF WATER IF PLANNING ON SPENDING TIME OUTDOORS.
ANOTHER TROUGH MAY APPROACH THE AREA TOWARDS THE END OF THE WEEK.
WILL CONTINUE TO MONITOR FOR WIND AND OTHER POTENTIAL IMPACTS AS IT
DRAWS CLOSER.
AVIATION...FOR HARRY REID...FOR THE 12Z FORECAST PACKAGE
WINDS
WILL FAVOR A NORTHWESTERLY TO NORTHERLY DIRECTION THROUGH THE TAF
PERIOD WITH 20 TO 25 KNOT WIND GUSTS PICKING UP AROUND 15Z AND
CONTINUING INTO THE EVENING HOURS. WIND GUSTS WILL DROP OFF THROUGH
THE OVERNIGHT HOURS BEFORE RETURNING ONCE AGAIN MONDAY MORNING. VFR
CONDITIONS WILL PREVAIL THROUGH THE TAF PERIOD WITH FEW AOA 12KFT
FILTERING THROUGH THE AREA.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 12Z FORECAST PACKAGE...THE REMAINING LAS VEGAS
VALLEY TAFS WILL SEE WINDS FOLLOW SIMILAR TRENDS TO THOSE AT HARRY
REID DISCUSSED ABOVE. NORTHWESTERLY-TO-NORTHERLY WINDS WILL CONTINUE
THROUGH THE TAF PERIOD IN THE OWENS VALLEY WITH GUSTS TO AROUND 25
KNOTS PICKING UP AROUND MID-MORNING AND CONTINUING INTO THE LATE
EVENING HOURS BEFORE DROPPING OFF OVERNIGHT. WESTERLY WINDS WILL
PREVAIL ACROSS THE WESTERN MOJAVE DESERT WITH WIND GUSTS BRIEFLY
DROPPING OFF LATER THIS MORNING BEFORE RETURNING LATE THIS AFTERNOON
THROUGH EARLY MONDAY MORNING. WINDS IN THE LOWER COLORADO RIVER
VALLEY WILL TURN TO THE NORTH AROUND 15Z. IFP WILL SEE THESE NORTH
WINDS CONTINUE INTO THE AFTERNOON WHEN WINDS WILL BRIEFLY TURN EAST
BEFORE SHIFTING BACK TO THE NORTH THIS EVENING. EED WILL FAVOR A
NORTHERLY DIRECTION THROUGH THE AFTERNOON WHEN WINDS WILL SHIFT TO
THE WEST-NORTHWEST. VFR CONDITIONS WILL PREVAIL AT ALL TAF SITES
WITH FEW AOA 12 KFT FILTERING THROUGH THE REGION.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
SHORT TERM...OUTLER
LONG TERM...MELTZER
AVIATION...STESSMAN
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