217  
FXUS65 KVEF 261729  
AFDVEF  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
1029 AM PDT THU APR 26 2018  
 
   
SYNOPSIS
 
ANOTHER HOT ONE EXPECTED OVER THE DESERTS TODAY WITH  
MANY LOCATIONS APPROACHING RECORD LEVELS. GUSTY WINDS WILL DEVELOP  
ACROSS THE REGION FRIDAY AND SATURDAY IN RESPONSE TO A LOW PRESSURE  
SYSTEM PASSING TO THE NORTH. CONDITIONS WILL BE MAINLY DRY HEADING  
INTO THE WEEKEND WITH TEMPERATURES 10-15 DEGREES COOLER.  

 
   
UPDATE
 
A FEW HIGH CLOUDS WILL BE AROUND THIS AFTERNOON ACROSS  
THE REGION. FORECAST LOOKS TO BE ON TRACK WITH SEVERAL LOCATIONS  
NEARING RECORD HIGH TEMPERATURES TODAY. SOME INSTABILITY AND  
MOISTURE WILL ALLOW FOR SOME SCATTERED TO ISOLATED SHOWERS AND  
THUNDERSTORMS MAINLY CONFINED TO THE EASTERN SIERRA SLOPES THIS  
AFTERNOON.
 
   
PREV DISCUSSION
 
/ISSUED AT 335 AM PDT THU APR 26 2018/  
   
SHORT TERM...THROUGH SATURDAY NIGHT
 
 
TODAY BEGINS WITH HIGH AMPLITUDE RIDGING OVER THE WESTERN STATES  
WITH THE RIDGE AXIS SLICING THROUGH THE CENTER OF NEVADA. THIS WILL  
SEND TEMPERATURES TO NEAR RECORDS THIS AFTERNOON IN MANY LOCATIONS.  
SEE THE CLIMATE SECTION BELOW. WINDS WILL BEGIN TO RESPOND TO AN  
APPROACHING WEATHER SYSTEM BY THIS EVENING IN THE WESTERN MOJAVE  
DESERT WITH WESTERLY WINDS 15-25 MPH EXPECTED.  
 
FRIDAY, THE LOW IS FORECAST TO HAVE PROGRESSED FAR ENOUGH EASTWARD  
TO AFFECT THE PACIFIC NW STATES. HEIGHTS ALOFT ARE LOWER ON FRIDAY  
AND TEMPERATURES WILL DROP A FEW DEGREES BUT OVERALL REMAIN WELL  
ABOVE NORMAL. WINDS WILL GET A LITTLE STRONGER FRIDAY ACROSS THE  
WESTERN MOJAVE DESERT WITH GUSTS TO 35 MPH LIKELY. WINDS WILL ALSO  
SPREAD TO THE NORTH AND EAST FRIDAY WITH BREEZY TO WINDY CONDITIONS  
EXPECTED NEARLY EVERYWHERE FRIDAY AFTERNOON. AT THIS POINT, IT LOOKS  
LIKE ADVISORY LEVEL WINDS WILL BE LOCALIZED HOWEVER AND NO OR  
LIMITED WIND HAZARD PRODUCTS WILL BE NEEDED.  
 
SATURDAY AND SATURDAY NIGHT, THE LOW PRESSURE SYSTEM WILL BE OVER  
THE PAC NW AND THE NORTHERN GREAT BASIN WITH ENHANCED WESTERLY FLOW  
ALOFT FORECAST OVER OUR AREA. THE LOCATION OF THE LOW AND THE  
LIMITED MOISTURE THIS FAR SOUTH WILL LIMIT SHOWER CHANCES TO MAINLY  
THE HIGHER ELEVATIONS OF THE SIERRA. WINDS WILL BE THE PRIMARY  
CONCERN SATURDAY WITH WIDESPREAD WINDY CONDITIONS THROUGHOUT THE  
DAY. WIND ADVISORIES MAY BE NECESSARY FOR SOME AREAS ON SATURDAY  
WITH THE LATEST RAW MODEL OUTPUT AND MOS GUIDANCE SUGGESTING THE  
WESTERN MOJAVE DESERT AS A PRIME CANDIDATE. ALONG WITH THE STRONGER  
WINDS COMES AREAS OF BLOWING DUST/SAND AND INCREASED DRIVING  
HAZARDS.  
   
LONG TERM
 
SUNDAY THROUGH THURSDAY.  
 
OUR REGION WILL BE UNDER THE INFLUENCE OF A BROAD TROUGH SUNDAY  
THROUGH THE MIDDLE OF NEXT WEEK WITH VARIOUS DISTURBANCE ROTATING  
AROUND THE SYSTEM. HOWEVER, IMPACTS ARE EXPECTED TO BE MINOR WITH  
THE MOST NOTICEABLE CHANGE BEING BREEZY TO WINDY PERIODS AND HIGH  
TEMPERATURES PULLING BACK INTO THE 70S ACROSS THE MOJAVE DESERT  
REGION...ESPECIALLY BY TUESDAY.  
 
THERE IS BETTER AGREEMENT NOW AMONG THE OPERATIONAL MODELS AND THEY  
INDICATE THE BASE OF A BROAD LOW OVER THE SOUTHWEST STATES SUNDAY  
AND MONDAY WHILE ITS CENTER HOLDS OVER THE NORTHERN INTERMOUNTAIN  
REGION. DISTURBANCES ROUNDING THE BASE OF THE TROUGH MAY STIR UP  
WINDY CONDITIONS ACROSS THE MOJAVE DESERT ZONES...ESPECIALLY WESTERN  
SAN BERNARDINO COUNTY SUNDAY AFTERNOON AND SUNDAY NIGHT. A SHORTWAVE  
TROUGH IS FORECAST TO DIVE DOWN THE WEST COAST MONDAY NIGHT AND  
TUESDAY WHICH WILL RESULT IN SPINNING UP A CLOSED LOW WHICH IS  
FORECAST TO BE CENTERED AROUND OUR FORECAST AREA TUESDAY THROUGH  
EARLY WEDNESDAY. THIS WILL BE THE COOLEST PERIOD OF THE WEEK AND  
THERE WILL BE THE POTENTIAL FOR SOME SHOWERS AROUND SOUTHERN NEVADA  
AND NORTHWEST ARIZONA ALONG WITH THE SOUTHERN SIERRA AND CENTRAL  
NEVADA. THE TROUGH IS FORECAST TO LIFT AWAY TO THE EAST AFTER  
WEDNESDAY ALLOWING A RIDGE TO BUILD BACK IN WITH A WARMING TREND.  

 
   
FIRE WEATHER
 
QUIET WEATHER CONDITIONS WILL CONTINUE UNTIL FRIDAY  
WHEN AN INCOMING LOW PRESSURE SYSTEM ENHANCES WINDS ACROSS THE  
SOUTHERN GREAT BASIN AND MOJAVE DESERT. WINDS WILL BE STRONGER ON  
SATURDAY IN MANY AREAS. WIND GUSTS OF 25-40 MPH AND MINIMUM RH  
VALUES BELOW 10 PERCENT WILL COMBINE WITH CRITICAL FUELS TO CREATE  
ENHANCED FIRE DANGER OVER THE WEEKEND.  

 
   
CLIMATE
 
VERY WARM TEMPERATURES ARE EXPECTED TODAY AND MANY  
OBSERVING SITES WILL APPROACH RECORD VALUES. THE RECORD HIGH  
TEMPERATURE AND THE MOST RECENT YEAR THAT IT OCCURRED ALONG WITH THE  
FORECAST HIGH FOR A FEW OF OUR LOCATIONS ARE LISTED BELOW.  
 
**SITE** **RECORD/YEAR** **FCST HIGH**  
LAS VEGAS 97/1996 96  
BISHOP 90/2000 88  
KINGMAN 94/1927 93  
DEATH VALLEY 110/1996 108  
NEEDLES 105/1898 104  

 
   
AVIATION...FOR MCCARRAN
 
LIGHT AND VARIABLE TO LIGHT SOUTHERLY  
WINDS THIS MORNING BECOMING NORTHEAST AFTER 18Z WITH SPEEDS  
GENERALLY UNDER 7 KTS. ONLY FEW-SCT HIGH CLOUDS TODAY.  
 
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST  
CALIFORNIA...GENERALLY LIGHT WINDS UNDER 10 KNOTS ACROSS THE AREA  
TODAY WITH OCCASIONAL HIGH CLOUDS. SOUTHWEST TO WEST WINDS WILL  
DEVELOP OVER THE WESTERN PORTIONS OF SAN BERNARDINO COUNTY LATER  
TODAY AND CONTINUE OVERNIGHT WITH WIND SPEEDS IN THE 10-20 MPH RANGE.  

 
   
SPOTTER INFORMATION STATEMENT
 
SPOTTERS ARE ENCOURAGED TO REPORT  
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING  
PROCEDURES.  

 
 

 
UPDATE...KRYSTON  
SHORT TERM/AVIATION/FIRE WEATHER/CLIMATE...SALMEN  
LONG TERM...ADAIR  
 
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:  
 
HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER  
 
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