973
NGUS86 KRSA 101322
HCMRSA
HYDROMETEOROLOGICAL COORDINATION MESSAGE
NATIONAL WEATHER SERVICE / CALIFORNIA-NEVADA RFC / SACRAMENTO CA
625 AM PDT THU SEP 10 2026
..SCATTERED PRECIP POSSIBLE TODAY MAINLY OVER THE SIERRA CREST
..SYSTEM BRUSHES CA/OR BORDER ON SATURDAY WITH LIGHT PRECIP
METEOROLOGICAL CONDITIONS (THU AM - WED AM)
STRONG HIGH PRESSURE HAS SHIFTED JUST A TAD BIT MORE WESTWARD OVER
THE PAST 24 HOURS...NOW RESIDING OVER THE LOWER COLORADO RIVER BASIN
NEAR THE CA/NV/AZ TRIPLE POINT. TO THE NORTH...BROAD CYCLONIC FLOW
EXISTS OVER THE FAR NORTHEAST PACIFIC AND WESTERN CANADA DIPPING
DOWN TOWARD THE PACIFIC NORTHWEST. IN THE MIDDLE OF THESE TWO
FEATURES...AN AREA OF CLOUDS IS CURRENTLY STREAMING ACROSS THE UPPER
KLAMATH RIVER BASIN...FAR NORTHERN CA...STRETCHING INTO NORTHERN NV.
RADAR IMAGERY DOES SHOW A FEW ECHOES ASSOCIATED WITH THIS
CLOUDINESS..BUT SO FAR LITTLE IF ANY PRECIP IS REACHING THE GROUND
WITH A VERY DRY SUB-CLOUD LAYER.
WITH AMPLE MID-LEVEL MOISTURE MAKING ITS WAY NORTHWARD FROM SOUTHERN
CA AND DAYTIME HEATING TODAY...A BETTER CHANCE OF SCATTERED SHOWERS
AND THUNDERSTORMS EXISTS ALONG THE CREST OF THE CENTRAL/SOUTHERN
SIERRA AND POINTS EAST ACROSS NV...AS WELL AS DOWN OVER THE HIGHER
TERRAIN OF COASTAL SOUTHERN CA. THEN...INTO FRIDAY...THE PATTERN
BEGINS TO SHIFT WITH A MORE ROBUST S/WV TROF DIVING SOUTH TOWARD THE
PACIFIC NORTHWEST FLATTENING AND SHIFTING THE HIGH PRESSURE RIDGE
BACK EASTWARD OVER THE SOUTHERN PLAINS STATES BY THE WEEKEND. THIS
WILL COOL OFF TEMPERATURES FROM BEING ABOVE NORMAL TODAY (PLUS 5- TO
PLUS 15-DEGF OVER SEASONAL NORMALS)...AND BRING A CHANCE OF SOME
LIGHT PRECIP ON THE SOUTHERN EXTENT OF THE SYSTEM NEAR THE CA/OR
BORDER BY SATURDAY.
FOR NEXT WEEK THROUGH WEDNESDAY...LOOK FOR A DRIER AIRMASS TO BE IN
PLACE ACROSS CA AND NV...BRINGING DRY CONDITIONS TO THE REGION.
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
*********************** CONTACT INFORMATION ************************
CNRFC OFFICE HOURS PHONE: 1 (916) 979-3056 EXTENSION 338
AFTER-HOURS CALLING SERVICE: 1 (800) 218-0858
LEAVE NAME...OFFICE...AND PHONE NUMBER
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