514
FXUS65 KVEF 132116
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
216 PM PDT TUE MAY 13 2025
SYNOPSIS
WIND SPEEDS WILL GRADUALLY DROP THROUGH THE DAY, LEAVING
BEHIND A MOSTLY SUNNY DAY WITH BELOW NORMAL TEMPERATURES. THE
EXCEPTION WILL BE THE SOUTHERN GREAT BASIN, WHERE SCATTERED LIGHT
SHOWERS AND ISOLATED THUNDERSTORMS ARE POSSIBLE TODAY. TEMPERATURES
WILL GRADUALLY REBOUND THROUGH THE WEEK BEFORE ANOTHER POTENT SYSTEM
ENTERS OUR REGION THIS WEEKEND.
SHORT TERM
TODAY THROUGH FRIDAY.
A POTENT TROUGH WILL CONTINUE TO PUSH EASTWARD OUT OF OUR FORECAST
AREA TODAY, RESULTING IN A WIND SHIFT FROM THE NORTH AND A GRADUAL
DECREASE IN WIND SPEEDS THROUGH THE DAY. WITH THE COLD FRONTAL
PASSAGE, AN INCREASE OF SCATTERED LIGHT SHOWERS AND ISOLATED
THUNDERSTORMS POSSIBLE ACROSS THE SOUTHERN GREAT BASIN. THOUGH, WITH
PWATS BETWEEN 0.25 AND 0.40", QPF IS MEAGER. GREATEST RAINFALL
AMOUNTS ARE EXPECTED IN THE HIGHER TERRAIN (EASTERN SIERRA SLOPES
AND MOUNTAINS ACROSS LINCOLN AND ESMERALDA COUNTIES) AS WELL AS
UNDERNEATH ANY THUNDERSTORMS THAT MAY DEVELOP.
OTHERWISE, TEMPERATURES WILL INCREASE BACK TOWARD SEASONAL NORMALS
THROUGH THE WEEK AS CONDITIONS DRY OUT, SKIES CLEAR, AND WINDS
WANE.
LONG TERM
SATURDAY THROUGH MONDAY.
HEADING INTO THE WEEKEND, CONFIDENCE CONTINUES TO INCREASE REGARDING
THE APPROACH OF A POTENT LOW PRESSURE SYSTEM. DETAILS REGARDING
EXACT LOCATION, TRAJECTORY, TIMING, AND DEPTH CONTINUE TO BE WORKED
OUT, BUT WHAT WE KNOW FOR NOW IS THAT TEMPERATURES WILL DROP ONCE
AGAIN, SOUTHWEST WIND GUSTS WILL INCREASE AHEAD OF THE ASSOCIATED
COLD FRONT, WITH NORTHWEST WINDS BEHIND THE FRONT, AND PRECIPITATION
CHANCES RETURN TO THE SOUTHERN GREAT BASIN. WILL CONTINUE TO ASSESS
THE DETAILS OF THIS SYSTEM AS WE MOVE THROUGH THE WEEK.
AVIATION...FOR HARRY REID...FOR THE 18Z FORECAST PACKAGE
GUSTY
SOUTHWEST WINDS LIKELY TO CONTINUE THROUGHOUT THE DAY, WITH GUSTS 15-
30 KNOTS. THERE REMAINS A LOW PROBABILITY (20%) OF A BRIEF PERIOD OF
NW WINDS THRU 19Z, BUT THE GOING EXPECTATION IS FOR WINDS TO REMAIN
SOUTHWESTERLY. TONIGHT, CONFIDENCE IS MUCH HIGHER IN A SHIFT TO THE
NORTHWEST, THOUGH THE EXACT TIMING IS STILL A BIT UNCERTAIN (07Z -
11Z). VFR CONDITIONS PREVAIL WITH FEW-SCT CLOUDS AROUND 10KFT MOVING
IN LATER THIS MORNING AND PERSISTING INTO TONIGHT. BREEZY NORTH
WINDS EXPECTED WEDNESDAY WITH GUSTS TO AROUND 20 KNOTS POSSIBLE.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...FOR THE 18Z FORECAST PACKAGE...IN THE LAS VEGAS VALLEY,
LIGHT NORTHWEST WINDS NEAR VGT WILL TRANSITION BACK TO WEST-
SOUTHWEST BY 21Z. OTHERWISE WEST SOUTHWEST WINDS EXPECTED THROUGH
THE EVENING. OVERNIGHT, NORTHWEST WINDS ARE FORECAST TO PUSH
THROUGH THE ENTIRE VALLEY BETWEEN 06Z AND 12Z. AT BIH, NORTHERLY
WINDS PERSIST WITH GUSTS AROUND 25 KNOTS THIS AFTERNOON AS SHOWERS
DEVELOP IN THE VICINITY. SCT-BKN CLOUDS AROUND 8KFT DURING THIS
TIME. STRONGEST WINDS ANTICIPATED AT DAG WITH WESTERLY GUSTS
LARGELY IN THE 30-35 KNOT RANGE. FINALLY, BREEZY CONDITIONS
CONTINUE IN THE LOWER COLORADO RIVER VALLEY WITH WINDS INITIALLY
SOUTH-SOUTHWEST BUT BECOMING MORE WESTERLY THIS EVENING.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
DISCUSSION...SOULAT
AVIATION...OUTLER
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:
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