622
FXUS65 KVEF 122136
AFDVEF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
236 PM PDT MON APR 12 2021
SYNOPSIS
A CHANGE IN THE WEATHER OCCURS TUESDAY AS A COOLING
TREND WILL BE SPARKED BY A CLOSED LOW FORMING OVER THE GREAT
BASIN, WHICH ALSO PROMISES A RETURN OF GUSTY WINDS TUESDAY INTO
WEDNESDAY BRINGING CRITICAL FIRE WEATHER CONDITIONS TO MUCH OF THE
REGION.
DISCUSSION...THROUGH SUNDAY
AN ELONGATED TROUGH OF LOW PRESSURE WITH TWO STRONG LOW PRESSURE
CENTERS IS DEVELOPING ACROSS THE NORTHERN TIER OF STATES. THE
WESTERNMOST LOW IS BECOMING BETTER ORGANIZED AND MOVING SOUTHWARD
INTO THE NORTHERN GREAT BASIN TONIGHT INTO TOMORROW MORNING. THIS
SYSTEM WILL BRING INCREASED WIND TO THE AREA, WITH A WIND ADVISORY
ISSUED FOR MUCH OF THE AREA IN EFFECT LATE TUESDAY MORNING
THROUGH THE EVENING HOURS. WIND WILL BE STRONGEST IN AND LEE OF
THE SIERRA IN INYO COUNTY. A HIGH WIND WARNING HAS BEEN ISSUED FOR
THE THREAT OF DAMAGING WIND IN THE SIERRA AND SOUTHERN OWENS
VALLEY. ALONG WITH THE WIND WILL BE DRY CONDITIONS, PROMPTING A
RED FLAG WARNING FOR MUCH OF THE AREA. THE TROUGH WILL LINGER
AROUND THE WEST FOR A FEW DAYS, KEEPING US WITH NEAR NORMAL
TEMPERATURES THOUGH THURSDAY WITH OCCASIONAL BREEZY CONDITIONS. A
SLOW WARMING TREND BEGINS FRIDAY AND CONTINUES THROUGH THE
WEEKEND.
FIRE WEATHER
A LOW PRESSURE SYSTEM WILL MOVE ACROSS THE GREAT
BASIN TUESDAY, BRINGING STRONG WEST TO SOUTHWEST WINDS ACROSS THE
REGION. THESE WINDS COUPLED WITH VERY DRY CONDITIONS HAVE PROMPTED
RED FLAG WARNINGS ACROSS MUCH OF THE AREA. WIND WILL DECREASE A
BIT TUESDAY NIGHT, BUT CRITICAL CONDITIONS WILL RETURN FOR
WEDNESDAY IN AREAS OF LINGERING WIND, PARTICULARLY THE HIGHER
ELEVATIONS OF NORTHWEST AZ.
AVIATION...FOR MCCARRAN
WINDS WILL REMAIN BELOW 10 KNOTS AND
FOLLOW NEAR TO DIURNAL TRENDS THROUGH EARLY TUESDAY MORNING. THERE
IS A CHANCE THAT WEST TO SOUTHWEST WINDS COULD PUSH IN EARLIER,
CLOSER TO 00Z THIS EVENING AT 8-10 KNOTS BUT CHANCES ARE LOOKING
SLIM. OTHERWISE, SOUTHWEST WINDS WILL INCREASE TUESDAY MORNING,
PEAKING DURING THE MID-AFTERNOON AND EVENING AT 20-30 KNOTS GUSTING
30-40 KNOTS.
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST
CALIFORNIA...
MOST AREAS WILL SEE LIGHT, DIURNAL WINDS THROUGH
TUESDAY MORNING. A FEW SPOTS COULD SEE WEST WINDS BETWEEN 10-15
KNOTS THIS EVENING INCLUDING KBIH, KDAG, AND KHND. WEST TO SOUTHWEST
WINDS WILL INCREASE TUESDAY MORNING, PEAKING MID-TUESDAY AFTERNOON
THROUGH THE EVENING HOURS. SPEEDS WILL PEAK AT 20-30 KNOTS GUSTING
30-45 KNOTS WITH LOCALLY HIGHER WINDS POSSIBLE ACROSS THE WESTERN
MOJAVE DESERT AND SIERRA/OWENS VALLEY.
SPOTTER INFORMATION STATEMENT
SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER OR
IMPACTS ACCORDING TO STANDARD OPERATING PROCEDURES.
DISCUSSION...BERC
AVIATION...GUILLET
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