Special Weather Statement, NWS Reno, NV

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE RENO NV
447 PM PDT THU MAY 22 2014

.UPDATE...
SATELLITE IMAGERY SHOWS COOLING CLOUD TOPS WITH CONVECTIVE COMPLEX
EXTENDING FROM CENTRAL NV INTO NORTH CENTRAL NV AND THE LATEST
HRRR INDICATES THIS COMPLEX WILL HOLD TOGETHER AS IT MOVES
WESTWARD INTO THE BASIN AND RANGE THIS EVENING. IT MAY GET AS FAR
WEST AS THE PINE NUTS AND VIRGINIA RANGE BEFORE HEATING DIMINISHES
AND STORMS BEGIN TO WEAKEN. HAVE EXTENDED THE CHANCE OF SHOWERS
AND THUNDERSTORMS AS WELL AS CLOUD COVER WESTWARD THIS EVENING AND
KEPT THE ACTIVITY GOING THROUGH 11 PM. HOHMANN

&&

.PREVIOUS DISCUSSION... /ISSUED 228 PM PDT THU MAY 22 2014/

SYNOPSIS...

HIGH PRESSURE WILL BUILD IN FOR THE HOLIDAY WEEKEND WITH ABOVE
AVERAGE TEMPERATURES RETURNING. LOW PRESSURE WILL ARRIVE MONDAY
AND TUESDAY FOR BREEZY CONDITIONS ALONG WITH COOLING TEMPERATURES.

SHORT TERM...

FEW CHANGES MADE AS THE RIDGE BUILDS IN FOR THE WEEKEND. A FEW
ISOLATED THUNDERSTORMS REMAIN POSSIBLE SOUTH OF HIGHWAY 50 THIS
EVENING, BUT SO FAR, IT IS MAINLY SHOWERS AND THE TRENDS OVERALL
HAVE NOT BEEN IMPRESSIVE.

A WEAK SHORTWAVE WILL PASS BY TO THE NORTH FRIDAY, BUT OTHER THAN
SOME MID AND HIGH CLOUDS DO NOT EXPECT MUCH OF AN IMPACT.
TEMPERATURES WILL CONTINUE TO WARM, WITH HIGHS IN THE 80S EXPECTED
IN WRN NV VALLEYS AND TEMPS IN THE 70S FOR THE SIERRA FRIDAY AND
SATURDAY. WINDS WILL GENERALLY REMAIN LIGHT, ALTHOUGH A LATE
AFTERNOON W-NW WIND IS EXPECTED EACH DAY. OVERNIGHT LOWS WILL BE
COOL, BUT WITH THE RECENT MOISTURE, DO NOT EXPECT AS EFFICIENT
RADIATIONAL COOLING AS WE SAW UNDER THE RIDGE LAST WEEK. WALLMANN

LONG TERM...SUNDAY THROUGH WEDNESDAY...

WELL ABOVE NORMAL TEMPERATURES CONTINUE INTO SUNDAY AND MEMORIAL DAY
AS RIDGE AXIS SHIFTS EAST ACROSS THE GREAT BASIN. MAX TEMPS MAY
TOUCH 90 DEGREES IN SOME OF THE WARMER VALLEYS OF WESTERN NV, WITH
75-80 DEGREES EXPECTED AROUND THE TAHOE BASIN. DRY CONDITIONS WITH
GRADUAL COOLING ARE THEN EXPECTED FOR NEXT WEEK AS TROUGH SETS UP
NEAR THE WEST COAST.

GENERALLY LIGHT WINDS ON SUNDAY WILL ALLOW FOR SOME TERRAIN DRIVEN
CONVERGENCE, WHICH WILL COMBINE WITH THE STRONG HEATING TO PRODUCE
AFTERNOON CUMULUS BUILDUPS NEAR THE SIERRA. THERE IS NOT MUCH IN THE
WAY OF FORCING SO THUNDERSTORM DEVELOPMENT LOOKS MARGINAL, BUT A
COUPLE OF SHORT LIVED CELLS COULD DEVELOP IN THE HIGHER ELEVATIONS
OF ALPINE AND MONO COUNTIES DURING THE LATE AFTERNOON.

FOR MEMORIAL DAY AND TUESDAY, LOW PRESSURE PUSHING INTO THE PACIFIC
NORTHWEST WILL KICK THE RIDGE AXIS FARTHER EAST AND PRODUCE
INCREASING WINDS WITH POTENTIAL GUSTS UP TO 40 MPH. THE MAIN IMPACT
WILL BE CHOPPY BOATING CONDITIONS ON AREA LAKES BOTH DAYS. IN
ADDITION, SOME FIRE WEATHER CONCERNS ARE POSSIBLE, ALTHOUGH THE
RECENT WIDESPREAD WETTING RAINS MAY MITIGATE SOME OF THESE CONCERNS.
AFTER ANOTHER VERY WARM DAY ON MONDAY, MAX TEMPS WILL DROP ABOUT 4-8
DEGREES FOR TUESDAY AS COOLER AIR SPREADS INTO THE REGION.

FOR WEDNESDAY AND THURSDAY, THE TROUGH AXIS IS LIKELY TO REMAIN NEAR
THE WEST COAST WITH LIGHT TO MODERATE SOUTHWEST FLOW ALOFT OVER THE
SIERRA. WINDS SHOULD BE LIGHTER THAN TUESDAY, WITH LEE SIDE ZEPHYR
BREEZES FOR THE LATE AFTERNOON AND EVENING HOURS. DAYTIME TEMPS WILL
BE NEAR SEASONAL NORMALS IN THE MID 70S TO LOWER 80S FOR MOST LOWER
ELEVATIONS. MJD

AVIATION...

A FEW AFTERNOON TSTMS ARE POSSIBLE SOUTH OF HIGHWAY 50 WITH LESS
THAN 10 PERCENT PROBABILITY OF IMPACTING KMMH. OTHERWISE VFR CONDS
WILL PREVAIL THRU FRIDAY WITH FEW-SCT AFTERNOON CUMULUS. EAST FLOW
OVER THE SIERRA SHOULD LIMIT FOG COVERAGE AROUND KTRK, BUT RECENT
MOISTURE AND A WEAKENING OF THESE WINDS BY EARLY FRIDAY MORNING
COULD PRODUCE PATCHY SHALLOW FOG AROUND THE TERMINAL, WITH QUICK
DISPERSAL AFTER SUNRISE. MJD

&&

.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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