663
FXUS65 KREV 210750
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
1250 AM PDT SUN JUN 21 2026
KEY MESSAGES
* SEASONAL TEMPERATURES AND DRY CONDITIONS PREVAIL ACROSS THE
AREA FOR THE FIRST DAY OF ASTRONOMICAL SUMMER.
* ABOVE AVERAGE TEMPERATURES, AND WIDESPREAD MODERATE HEATRISK
STARTING MONDAY THROUGH AT LEAST THURSDAY FOR WESTERN NV, WITH
TYPICAL AFTERNOON BREEZES.
* MODEL ENSEMBLES ARE SHOWING A RIDGE BREAKDOWN THE END OF THE
WEEK, WITH AN INCREASE IN WINDS AND LOWER TEMPERATURES.
DISCUSSION
* TODAY WE'LL HAVE ZONAL FLOW OVER THE REGION. THIS WILL TRANSLATE
INTO A SUNNY, QUIET WEATHER DAY WITH SEASONAL TEMPERATURES AND
TYPICAL WESTERLY WINDS THIS AFTERNOON. OTHERWISE, IT'S A GREAT
DAY TO BE OUTDOORS ENJOYING THE FIRST DAY OF ASTRONOMICAL
SUMMER!
* FOR THE UPCOMING WORK WEEK, ENSEMBLES ALL SHOW A WEAK UPPER
LEVEL RIDGE SETTING UP OVER THE WESTERN US. AS A RESULT,
TEMPERATURES WILL ONCE AGAIN INCREASE BACK INTO THE MID TO UPPER
90S FOR WESTERN NV, EASTERN LASSEN, AND THE LOWER ELEVATIONS IN
MONO COUNTY FROM MONDAY THROUGH AT LEAST THURSDAY. THIS WILL
RESULT IN SEVERAL DAYS OF WIDESPREAD MODERATE, TO LOCALIZED
MAJOR HEATRISK. TEMPERATURES THIS WEEK FOR THE EASTERN SIERRA
COMMUNITIES WILL END UP MOSTLY IN THE 80S.
* BY FRIDAY, ENSEMBLES ARE SHOWING A BREAKDOWN OF THE UPPER RIDGE
AS ANOTHER TROUGH MOVES INTO THE WESTERN US. WHILE DETAILS ON
THE EXACT PATH AND STRENGTH OF THIS TROUGH ARE STILL LOW, IT'S
WORTH NOTING THAT BLENDED GUIDANCE IS SHOWING INCREASING WINDS
THROUGHOUT THE REGION AS WELL AS 10-15% CHANCES FOR SHOWERS NEAR
THE OREGON BORDER. THIS WILL RESULT IN FIRE WEATHER CONCERNS,
AS WELL AS IMPACTS TO AVIATION AND OUTDOOR RECREATION.
-MCKELLAR
AVIATION
VFR CONDITIONS CONTINUE AT ALL WESTERN NV AND SIERRA TERMINALS.
TYPICAL WEST WINDS RETURN IN THE AFTERNOON TO EARLY EVENING WITH
SUSTAINED 10-15 KTS WITH GUSTS OF 20-25 KTS, THEN LIGHT AND VRB
OVERNIGHT IN THE MORNING. THERE IS A LOW CHANCE FOR PATCHY FOR
FOR KTRK OVERNIGHT. -MCKELLAR
REV WATCHES/WARNINGS/ADVISORIES
NV...NONE.
CA...NONE.
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