437
FXUS65 KVEF 242048
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
148 PM PDT THU APR 24 2025
SYNOPSIS
PLEASANT CONDITIONS WILL CONTINUE THROUGH THIS EVENING
WITH MAINLY CLEAR SKIES AND SLIGHTLY ABOVE NORMAL TEMPERATURES.
GUSTY SOUTHWESTERLY WINDS WILL INCREASE ACROSS THE REGION TOMORROW
AS AN AREA OF LOW PRESSURE APPROACHES THE WEST COAST. THIS SYSTEM
WILL THEN MOVE ACROSS THE DESERT SOUTHWEST THIS WEEKEND, BRINGING
BELOW NORMAL TEMPERATURES, GUSTY WINDS, AND THE CHANCE OF A FEW
ISOLATED SHOWERS. TEMPERATURES WILL RETURN TO ABOVE NORMAL LEVELS
NEXT WEEK.
.DISCUSSION.
A SHORTWAVE MOVING ACROSS THE GREAT BASIN THIS AFTERNOON IS
SPREADING HIGH CLOUDS OVER THE NORTHERN HALF OF THE CWA. THIS
SYSTEM HAS ALSO RESULTED IN BREEZY CONDITIONS DEVELOPING ACROSS
SOUTHERN NEVADA, NORTHWEST ARIZONA, AND THE COLORADO RIVER VALLEY.
PEAK WIND GUSTS OF 20 TO 30 MPH WILL CONTINUE INTO THE EVENING,
BUT SHOULD DECREASE AFTER SUNSET. ON FRIDAY, A LARGE AND FAIRLY
DEEP TROUGH WILL APPROACH THE WEST COAST, SPREADING HIGH CLOUDS
AND GUSTY SOUTHWEST WINDS ACROSS THE REGION. HREF PROBABILITIES
FOR WIND GUSTS OVER 40 MPH ACROSS THE WESTERN MOJAVE DESERT AND
DEATH VALLEY AREA HAVE INCREASED TO GREATER THAN 70 PERCENT FOR
TOMORROW. AS A RESULT, A WIND ADVISORY HAS BEEN ISSUED FOR THESE
AREAS. WHILE WINDS WILL DECREASE TOMORROW NIGHT, THEY ARE EXPECTED
TO INCREASE AGAIN ON SATURDAY, SO I ELECTED TO KEEP THE ADVISORY
GOING THROUGH SATURDAY EVENING. THE MORONGO BASIN IS NOT INCLUDED
AT THIS TIME, BUT WINDS TO 35 MPH ARE POSSIBLE IN AND NEAR MORONGO
VALLEY TOMORROW AND AGAIN ON SATURDAY. IF FUTURE GUIDANCE RUNS
SHOW AN INCREASE IN THIS AREA, THE ADVISORY MAY NEED TO BE
EXTENDED FARTHER SOUTH.
AS THE TROUGH PUSHES INLAND OVER THE WEEKEND, SHARPLY COOLER
TEMPERATURES WILL FOLLOW, WITH HIGH TEMPERATURES FALLING 5 TO 10
DEGREES BELOW NORMAL. PRECIPITATION CHANCES WILL REMAIN FAVORED
ACROSS THE SIERRA AND SOUTHERN GREAT BASIN, BUT WITH 500MB TEMPS
FALLING TO -25C OR COLDER NORTH OF I-40, WE CAN`T COMPLETELY RULE
OUT SOME STRAY TERRAIN-DRIVEN SHOWERS DEVELOPING EVEN FURTHER
SOUTH. GUIDANCE HAS COME INTO BETTER AGREEMENT ON A SLOWER
EASTWARD EJECTION OF THE TROUGH FROM THE AREA, KEEPING
TEMPERATURES SLIGHTLY BELOW NORMAL INTO MONDAY. THEREAFTER, HIGH-
PRESSURE RIDGING WILL GRADUALLY BUILD ACROSS THE REGION WITH
TEMPERATURES RETURNING TO ABOVE NORMAL LEVELS BY MIDWEEK AND
BEYOND.
AVIATION...FOR HARRY REID...FOR THE 18Z FORECAST PACKAGE
LIGHT WINDS WILL GIVE WAY TO SOUTHWEST GUSTS OF 20 TO 25 KTS EARLY
THIS AFTERNOON. GUSTS WILL DECREASE AFTER SUNSET, LEAVING
SOUTHWESTERLY SUSTAINED WINDS OF 8 TO 12 KTS. FEW-SCT AOA 15KFT
THROUGH THE TAF PERIOD WITH POSSIBLY A PERIOD OF A HIGH BKN CLOUD
DECK AOA 20KFT FOR A COUPLE HOURS OVERNIGHT TONIGHT.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...BREEZY SOUTH-SOUTHWEST WINDS CONTINUE THROUGH THE DAY
TODAY, WITH GUST SPEED AND FREQUENCY SUBSIDING AFTER SUNSET. KBIH
WILL FAVOR THE SOUTH-SOUTHEAST WITH OCCASIONAL GUSTS AROUND 20 KTS
(LEFT GUSTS OUT OF THE PREVAILING TAF). KDAG WILL FAVOR THE WEST
WITH GUST SPEEDS BETWEEN 25 AND 30 KTS. GUST SPEEDS AT KEED AND KIFP
BETWEEN 20 AND 25 KTS. FEW-SCT AOA 15KFT WITH BKN CLOUDS
INCREASING LATE-AFTERNOON.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING
PROCEDURES.
SHORT TERM...PLANZ
LONG TERM...OUTLER/PLANZ
AVIATION...BERC
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