Area Forecast Discussion
Issued by NWS Reno, NV

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343
FXUS65 KREV 071026
AFDREV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
226 AM PST SUN FEB 7 2016

.SYNOPSIS...

HIGH PRESSURE BUILDING OVER THE GREAT BASIN WILL KEEP DRY
CONDITIONS IN PLACE WITH GENERALLY LIGHT WINDS AND VALLEY
INVERSIONS. A STEADY WARMING TREND IS EXPECTED FOR THE NEXT FEW
DAYS, WITH DAYTIME TEMPERATURES REMAINING WELL ABOVE NORMAL
THROUGH THE UPCOMING WEEK. A WEAK LOW PRESSURE MAY BRING LIGHT
RAIN AND SNOW SHOWERS AND SLIGHT COOLING BY NEXT WEEKEND.

&&

.SHORT TERM...

HIGH PRESSURE RIDGE OVER CALIFORNIA WILL CONTINUE TO AMPLIFY AND
MOVE SLOWLY INLAND TO THE GREAT BASIN BY TUESDAY. THE AXIS OF THIS
RIDGE IS EXPECTED TO REMAIN WEST OF THE SIERRA THROUGH MONDAY,
RESULTING IN GENERALLY LIGHT EAST WINDS IN LOWER ELEVATIONS BUT
SOMEWHAT STRONGER GUSTS UP TO 40 MPH AT TIMES FOR HIGH ELEVATION
RIDGES. AS FLOW ALOFT SHIFTS TO SOUTH AND SOUTHWEST BY TUESDAY,
RIDGE TOP GUSTS SHOULD DECREASE TO BELOW 30 MPH.

DAYTIME TEMPERATURES WILL CONTINUE TO RISE DURING THE NEXT FEW
DAYS, LEADING TO CONTINUED RUNOFF OF MOUNTAIN SNOWPACK INTO AREA
RIVERS, STREAMS AND LAKES. THE FASTEST RATE OF WARMING WILL OCCUR
IN HIGHER ELEVATIONS THROUGH MONDAY, THEN THE LOWER ELEVATIONS
SHOULD SEE A MORE SIGNIFICANT WARMUP BY TUESDAY. HIGHS IN THE
MAJORITY OF VALLEYS WILL GENERALLY RANGE FROM THE UPPER 40S TO MID
50S TODAY AND MONDAY, WITH SOME SITES IN EASTERN CA LESS AFFECTED
BY INVERSIONS PUSHING CLOSER TO 60 DEGREES. BY TUESDAY, 60
DEGREES WILL BE WITHIN REACH FOR MORE LOCATIONS, INCLUDING THE
RENO-CARSON CITY AND TAHOE-TRUCKEE REGIONS. MJD


.LONG TERM...WEDNESDAY THROUGH SUNDAY...

DRY AND MILD CONDITIONS WILL CONTINUE FOR THE MIDDLE OF THE WORK
WEEK WITH A STRONG RIDGE OF HIGH PRESSURE OVER THE WEST. VALLEY HIGH
TEMPERATURES WILL REACH THE UPPER 50S TO LOWER 60S, WITH MOUNTAINS
MAINLY IN THE MID 40S TO LOWER 50S. THIS IS WARM FOR EARLY FEBRUARY,
BUT NOT PUSHING RECORDS, WHICH ARE ABOUT 5-10 DEGREES HIGHER.

THE RIDGE BEGINS TO WEAKEN AND SHIFT EASTWARD BY THE END OF THE WEEK
INTO THE WEEKEND, WITH THE CHANCE FOR A SYSTEM TO PUSH ACROSS THE
PACIFIC NORTHWEST. LATEST TRENDS KEEP THE BEST CHANCES FOR ANY
PRECIPITATION NEAR THE OREGON BORDER NORTHWARD AND DELAY THE TIMING
BY ABOUT 12 HOURS, WHICH MAKES SENSE GIVEN THE STRENGTH OF THE RIDGE
THIS SYSTEM IS ENCOUNTERING. WILL MAINTAIN THE SLIGHT CHANCE TO LOW
END CHANCES FOR PRECIPITATION MAINLY IN THE NORTHERN SIERRA AND
NORTHEAST CALIFORNIA LATE FRIDAY THROUGH SUNDAY. THIS DOES NOT HAVE
THE MAKINGS OF BEING A SIGNIFICANT STORM FOR THE REGION, WITH THE
GREATEST IMPACT LOOKING TO BE A COOLING TREND GOING INTO THE
WEEKEND. DJ

&&

.AVIATION...

HIGH PRESSURE OVER THE SIERRA AND NORTHWEST NEVADA WILL BRING
WIDESPREAD VFR CONDITIONS ALONG WITH LIGHT SURFACE WINDS, AND
15-20G30KT EASTERLY RIDGE LEVEL WINDS THROUGH MONDAY. THESE
EASTERLY WINDS ARE LIMITING FOG DEVELOPMENT IN SIERRA VALLEYS
EARLY THIS MORNING AND CHANCES FOR PATCHY DEVELOPMENT ARE ABOUT 30
PERCENT, INCLUDING AT KTRK. DJ

&&


.REV WATCHES/WARNINGS/ADVISORIES...
NV...NONE.
CA...NONE.
&&

$$

FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/RENO (ALL LOWER CASE)



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