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AGUS76 KRSA 171504
HMDRSA
HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE / CALIFORNIA-NEVADA RFC / SACRAMENTO CA
805 AM PDT WED JUN 17 2026
..WARM WITH PM SHOWERS/T-STORMS OVER THE SIERRA WED AND THU
..COOLING WITH INCREASING CHANCES OF PRECIP NORTH FRI INTO SAT
METEOROLOGICAL CONDITIONS (WED AM - TUE AM)
HIGH PRESSURE CONTINUES OVER THE EASTERN PACIFIC AND WEST COAST THIS
MORNING WITH THE STORM TRACK WELL TO THE NORTH AS THE JETSTREAM
CROSSES THE BRITISH COLUMBIA COAST AND THEN DIVES SOUTHEAST TOWARD
THE NORTHERN PLAINS STATES. ONCE AGAIN...LOOKING AT A DAY OF ABOVE
AVERAGE TEMPERATURES FOR THE MAJORITY OF THE AREA ANYWHERE FROM PLUS
5- TO PLUS 20-DEGF OVER SEASONAL NORMALS. THE EXCEPTION WILL BE
COASTAL AREAS IMPACTED BY THE MARINE LAYER PRIMARILY FROM THE SF BAY
AREA DOWN ACROSS SOUTHERN CA. ALSO...WITH ENOUGH DAYTIME HEATING AND
AVAILABLE MOISTURE...AFTERNOON AND EARLY EVENING CONVECTIVE SHOWERS
AND T-STORMS WILL BE A POSSIBILITY OVER THE CENTRAL/SOUTHERN SIERRA.
TOMORROW WILL BRING MORE OF THE SAME AS THE HIGH PRESSURE SLOWLY
MAKES ITS WAY EASTWARD. MIGHT ACTUALLY SEE A BIT MORE COVERAGE OF
SHOWERS AND T-STORMS OVER THE SIERRA...BUT THE BEST CHANCE STILL
LOOKS TO BE OVER THE CENTRAL/SOUTHERN PORTIONS OF THE RANGE.
THEN BY FRIDAY INTO SATURDAY...THE UPR RIDGE WILL MOVE FAR ENOUGH
DOWNSTREAM OVER THE ROCKY MOUNTAINS AND EVENTUALLY THE PLAINS
STATES. THIS WILL ALLOW GENERAL TROFFING TO FORM ALONG THE WEST
COAST WITH AN INCREASING CHANCE OF PRECIP PRIMARILY FROM THE UPPER
KLAMATH RIVER BASIN DOWN ACROSS NORTHEAST CA AND PORTIONS OF THE
SIERRA...ALONG WITH FARTHER INLAND OVER NORTHERN NV. AREAL AVERAGED
AMOUNTS CONTINUE TO LOOK TO REMAIN NEAR OR LESS THAN 0.25-INCH.
HOWEVER...WHERE ANY CONVECTIVE PRECIP DOES DEVELOP...LOCALIZED
HEAVIER AMOUNTS ARE POSSIBLE. ALSO FOR THE WEEKEND...TEMPERATURES
WILL COOL TO BELOW OR NEAR NORMAL FOR THIS TIME OF YEAR.
INTO NEXT WEEK...HEIGHTS WILL ONCE AGAIN BEGIN TO RISE AS HIGH
PRESSURE BUILDS OVER THE DESERT SOUTHWEST. LOOK FOR DRYING
CONDITIONS AND WARMER THAN AVERAGE TEMPERATURES THROUGH THE MIDDLE
OF THE WEEK.
FREEZING LEVELS ARE CURRENTLY RUNNING FROM 15000- TO 17000-FEET AND
WILL REMAIN NEAR THIS LEVEL THROUGH THURSDAY. SOME COOLING ON FRIDAY
INTO SATURDAY WILL ALLOW THESE TO DIP OVER NORTHERN AREAS CLOSER TO
13000- TO 14000-FEET. THEN AS HIGH PRESSURE BEGINS TO BUILD ONCE
AGAIN NEXT WEEK...LOOK FOR A RETURN TO A RANGE OF 15000- TO JUST
OVER 17000-FEET.
PLEASE NOTE: THIS PRODUCT MAY NOT BE ROUTINELY UPDATED.
PLEASE REFER TO THE FOLLOWING PRODUCT ISSUED BY THE CNRFC
WWW.CNRFC.NOAA.GOV/DAILY-BRIEFING FOR A GRAPHICAL SUMMARY OF
WEATHER AND HYDROLOGIC CONDITIONS.
QPF GRAPHICS ARE AVAILABLE AT WWW.CNRFC.NOAA.GOV/QPF.PHP
DRK
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