455
FXUS65 KVEF 200508
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1008 PM PDT TUE MAY 19 2026
KEY MESSAGES
* A WARMING TREND WILL RESULT IN ABOVE NORMAL TEMPERATURES FOR THE
UPCOMING MEMORIAL DAY WEEKEND.
* MUCH UNCERTAINTY EXISTS INTO NEXT WEEK AS A SERIES OF WESTERN
U.S. STORM SYSTEMS INTERACT WITH ONE ANOTHER.
DISCUSSION
ANOTHER DAY OF UNSEASONABLY MILD TEMPERATURES IS ON DECK IN THE
WAKE OF SUNDAY'S POWERFUL STORM SYSTEM AND COLD FRONT. LINGERING
NORTH/NORTHWEST FLOW WILL CONTINUE TO PROMOTE BREEZY CONDITIONS ON
AREA LAKES, ESPECIALLY ACROSS THE COLORADO RIVER VALLEY THE
REMAINDER OF TODAY AND AGAIN TOMORROW. THIS MAY PROMOTE CHOPPY
CONDITIONS FOR BOATERS. WINDS SHOULD GRADUALLY IMPROVE FROM
THURSDAY INTO THE WEEKEND. ELSEWHERE, THE MAIN CONCERN WILL BE
RISING TEMPERATURES FROM THE LATTER HALF OF THE WEEK INTO THE
WEEKEND. TEMPERATURES SHOULD CLIMB TO NEAR NORMAL BY TOMORROW,
THEN INCREASE TO AROUND 5-10 DEGREES ABOVE NORMAL FROM THURSDAY
THROUGH THE UPCOMING HOLIDAY WEEKEND. THIS WILL RESULT IN SEVERAL
DAYS OF MODERATE HEAT RISK NAMELY ACROSS DEATH VALLEY AND THE
COLORADO RIVER VALLEY REGION. WHILE THIS IS NOT THE HIGHEST
CATEGORY OF HEAT RISK, IT STILL REPRESENTS A THREAT, ESPECIALLY
FOR THOSE NOT ACCLIMATED TO DESERT WEATHER CONDITIONS, AND WITH
THE ABUNDANCE OF OUTDOOR RECREATION EXPECTED OVER THE COMING
WEEKEND. FOLKS ARE URGED TO FOLLOW HEAT SAFETY RECOMMENDATIONS IF
PLANNING ON BEING OUTDOORS THIS WEEKEND.
AS WE ENTER NEXT WEEK, ENSEMBLES PAINT A VERY UNCERTAIN PICTURE
AS TO EXACTLY HOW THE UPPER AIR PATTERN WILL EVOLVE. THERE IS
RELATIVELY HIGH CONFIDENCE IN THE PRESENCE OF AN UPPER TROUGH
SOMEWHERE ACROSS THE PACIFIC NORTHWEST AND A WEAKER UPPER LOW OFF
THE CALIFORNIA COAST. HOWEVER, THERE REMAINS CONSIDERABLE
DISAGREEMENT ON THE EXACT PLACEMENT AND INTENSITY OF THESE
FEATURES, WHICH IS VERY RELEVANT ON HOW THEY MAY INTERACT WITH ONE
ANOTHER AND IMPACT LOCAL WEATHER. WHILE CONFIDENCE IS MODERATE IN
THE CONTINUATION OF WARM TO HOT CONDITIONS, THERE IS ALSO A LOW
PROBABILITY OF INCREASING WINDS AND POTENTIALLY SOME
PRECIPITATION, MAINLY OVER THE HIGHER TERRAIN.
AVIATION...FOR HARRY REID
FOR THE 06Z FORECAST
PACKAGE...NORTHEASTERLY WINDS WILL BECOME NORTHWESTERLY OVERNIGHT,
DROPPING TO AROUND 5-10KT, BEFORE VEERING TO THE NORTHEAST AGAIN BY
LATE TUESDAY MORNING. WINDS THEREAFTER WILL REMAIN AROUND 8KT OR
LESS, GRADUALLY VEERING TO THE SOUTHEAST THROUGH THE AFTERNOON AND
BECOMING VARIABLE AFTER SUNSET. VFR CONDITIONS WILL CONTINUE WITH A
FEW HIGH CLOUDS AROUND 25KFT EXPECTED TO MOVE INTO THE AREA TUESDAY
EVENING.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 06Z FORECAST PACKAGE...WINDS AREAWIDE WILL DROP
TO AROUND 5-10KT THROUGH THE NIGHT WITH GUSTY NORTHERLY WINDS
RETURNING BY MID-MORNING AT THE COLORADO RIVER TERMINALS. GUSTS WILL
PEAK AT AROUND 25KT THROUGH MID-AFTERNOON. ELSEWHERE, WINDS WILL
GENERALLY REMAIN UNDER 10KT. VFR CONDITIONS PREVAIL AREAWIDE, WITH
BANDS OF HIGH CLOUDS AROUND 25KFT ACROSS SOUTHERN AREAS THIS
EVENING, AND INCREASING MID-LEVEL AND HIGH CLOUDS FROM THE NORTH
LATE IN THE PERIOD.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...AUSTIN
AVIATION...PHILLIPSON
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