Excessive Heat in Nevada, June 19 to 30, 2015

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
222 AM PDT FRI JUN 19 2015

.SYNOPSIS...HIGH PRESSURE WILL RESULT IN CONTINUED HOT AND DRY
CONDITIONS AND BREEZY AFTERNOONS THROUGH EARLY NEXT WEEK. THE
HOTTEST TEMPERATURES ARE EXPECTED SATURDAY AND SUNDAY. &&

.SHORT TERM...TODAY THROUGH SUNDAY.

VERY LITTLE CHANGE TO THE FORECAST THIS MORNING. THE SETUP STILL
CONSISTS OF A BROAD AREA OF UPPER LEVEL HIGH PRESSURE WHICH WILL
GRADUALLY SHIFT EAST ACROSS THE REGION THROUGH THE WEEKEND. THIS
WILL RESULT IN CONTINUED VERY HOT TEMPERATURES AND BREEZY WINDS
DURING THE AFTERNOON HOURS. AN EXCESSIVE HEAT WARNING REMAINS IN
EFFECT THROUGH MONDAY. TEMPERATURES WILL CLIMB A DEGREE OR TWO TODAY
AND AGAIN SUNDAY BEFORE A SLOW RETREAT BEGINS SUNDAY/MONDAY. PLEASE
SEE THE LATEST EXCESSIVE HEAT WARNING FOR THE ADDITIONAL IMPACTS AND
CALLS TO ACTION.

OUTSIDE OF WINDS AND TEMPERATURES THE ONLY OTHER CONCERN IS SMOKE
FROM THE LAKE WILDFIRE IN THE SAN BERNARDINO MOUNTAINS AND ITS
IMPACT DOWNSTREAM IN AREAS SUCH AS MORONGO VALLEY...YUCCA
VALLEY...JOSHUA TREE...TWENTYNINE PALMS SOUTH INTO RIVERSIDE COUNTY.
I DID PUT IN SOME PATCHY SMOKE INTO THE GRIDS THROUGH EARLY SATURDAY
MORNING. THERE IS ALSO A CHANCE OF SOME SMOKE IMPACTING PORTIONS OF
ESMERALDA AND NORTHERN INYO COUNTIES FROM THE SKY FIRE SOUTH OF
YOSEMITE. FOR THE MOMENT HAVE NOT ADDED SMOKE INTO THE FORECAST FOR
THOSE AREAS...BUT WE'LL NEED TO KEEP AND EYE ON IT.

.LONG TERM...MONDAY THROUGH THURSDAY.

HIGH TEMPERATURES LOOK TO RETREAT A FEW DEGREES EARLY NEXT WEEK AS
CENTER OF RIDGE SHIFTS EAST TOWARD THE FOUR CORNER REGION. DRY
WEATHER WILL PERSIST AT LEAST THROUGH THE MIDDLE OF NEXT THEN
ATTENTION TURNS TOWARD AN INVERTED TROUGH THAT ALL MODEL DEPICT
MOVING WEST ALONG SOUTHERN PERIPHERY OF RIDGE ACROSS NORTHERN
MEXICO. QUITE A FEW DIFFERENCES BETWEEN MODELS IN THE THURSDAY-
FRIDAY TIME FRAME. FOR NOW, WILL CONTINUE TO TAKE CONSERVATIVE
APPROACH BY INDICATING A SLIGHT INCREASE IN CLOUD COVER AND
HUMIDITY. SHAVED A FEW MORE DEGREES OFF HIGHS LATE IN THE WEEK DUE
TO ADDITIONAL CLOUD COVER/HUMIDITY.
&&

.AVIATION...FOR MCCARRAN...HOT TEMPERATURES WILL CONTINUE TODAY WITH
LIGHT EASTERLY WINDS IN THE LATE MORNING AND EARLY AFTERNOON
FOLLOWED BY GUSTY SOUTHWESTERLY WINDS DURING THE LATE AFTERNOON AND
EVENING. SMOKE FROM CALIFORNIA WILDFIRES SHOULD STAY CLEAR OF THE
AREA TODAY. OUTSIDE OF WINDS AND TEMPERATURES...NO OPERATIONALLY
SIGNIFICANT WEATHER IS EXPECTED THIS WEEKEND.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...HOT TEMPERATURES WILL BRING HIGH DENSITY ALTITUDES
THROUGH THE WEEKEND. TYPICAL AFTERNOON BREEZES CAN BE EXPECTED WITH
THE STRONGEST WINDS LATE THIS AFTERNOON INTO THIS EVENING. ELEVATED
SMOKE FROM WILDFIRES BURNING IN THE SIERRA AND SAN BERNARDINO
MOUNTAINS COULD CREATE VISIBILITY ISSUES AT ALTITUDE TO THE EAST OF
THE FIRE LOCATIONS.
&&

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

SHORT TERM/AVIATION...WOLCOTT
LONG TERM.............PIERCE

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