056
NGUS86 KRSA 091345
HCMRSA
HYDROMETEOROLOGICAL COORDINATION MESSAGE
NATIONAL WEATHER SERVICE / CALIFORNIA-NEVADA RFC / SACRAMENTO CA
645 AM PDT WED SEP 9 2026
..ABOVE NORMAL TEMPERATURES THE NEXT COUPLE DAYS
...SCATTERED SHOWERS/T-STORMS WED AND THU SOCAL MTNS AND SRN
SIERRA...
METEOROLOGICAL CONDITIONS (WED AM - TUE AM)
HIGH PRESSURE HAS SHIFTED WESTWARD OVER THE PAST 24 HOURS AND IS NOW
CENTERED NEAR THE 4-CORNERS REGION...AND WILL BE THE DOMINANT
FEATURE OVER THE NEXT COUPLE DAYS. THIS WILL BRING ABOVE NORMAL
TEMPERATURES TO MUCH OF THE REGION WITH AFTERNOON ANOMALIES RUNNING
ANYWHERE FROM PLUS 5- TO PLUS 15-DEGF OVER SEASONAL NORMALS BOTH
TODAY AND THURSDAY. ALSO...ELEVATED MOISTURE OVER SOUTHERN CA HAS
ADVECTED NORTHWARD AND MADE ITS WAY OVER CENTRAL CA AS WELL. THE
09/12Z KNKX RAOB CONTINUES TO SHOW A VERY IMPRESSIVE PW VALUE OF
1.80-INCHES. AND NOW...THE 09/12Z KOAK RAOB HAS RECORDED A PW VALUE
OF 1.12-INCHES...ABOUT DOUBLE THIS TIME YESTERDAY. ONCE AGAIN...WITH
AMPLE MOISTURE IN PLACE AND DAYTIME HEATING...LOOK FOR SCATTERED
SHOWERS AND T-STORMS TO DEVELOP MAINLY OVER THE COASTAL MOUNTAINS OF
SOUTHERN CA WITH SOME ACTIVITY BEGINNING TO CREEP OVER THE SOUTHERN
SIERRA. THURSDAY LOOKS TO BE THE BETTER DAY FOR CONVECTIVE
DEVELOPMENT OVER THE SOUTHERN SIERRA...PRIMARILY RIGHT ALONG THE
CREST.
BY FRIDAY...A COUPLE DISTURBANCES DROPPING SOUTHWARD ALONG THE AK
AND BC COAST WILL ROTATE TOWARD THE PACIFIC NORTHWEST...FLATTENING
THE HIGH PRESSURE CELL OVER THE DESERT SOUTHWEST. THIS WILL BEGIN A
COOLING TREND THROUGH THE WEEKEND INTO NEXT WEEK WITH MUCH OF THE
PRECIP CHANCES REMAINING NEAR THE CA/OR BORDER ON SATURDAY INTO
SUNDAY. AS THIS S/WV TROF MOVES INLAND TOWARD THE NORTHERN
ROCKIES...FLOW WILL REMAIN CYCLONIC ACROSS THE WEST COAST WITH DRY
CONDITIONS SETTING UP FOR MUCH OF NEXT WEEK.
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
DRK
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