241
FXUS01 KWBC 230759
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
259 AM EST SAT NOV 23 2024
VALID 12Z SAT NOV 23 2024 - 12Z MON NOV 25 2024
...VERY STRONG ATMOSPHERIC RIVER TO PRODUCE HEAVY SNOW ACROSS THE
SIERRA NEVADA BEFORE WINDING DOWN OVER NORTH/CENTRAL CALIFORNIA
TODAY...
...ABOVE AVERAGE TEMPERATURES EXPAND ACROSS THE CENTRAL U.S. THIS
WEEKEND...
MOISTURE ASSOCIATED WITH A HIGHLY IMPACTFUL AND DANGEROUS
ATMOSPHERIC RIVER EVENT WILL DIMINISH AS IT SAGS SOUTH AND EAST
THROUGH CENTRAL CALIFORNIA TODAY. HEAVY SNOW IS LIKELY OVER MUCH
OF THE SIERRA NEVADA THIS MORNING WHERE ANYWHERE BETWEEN 1-2 FEET
ARE EXPECTED TO ACCUMULATE WHEN ALL SAID AND DONE. UPSLOPE
PORTIONS OF THE SIERRA BELOW 7000 FEET MAY EXPERIENCE ISOLATED
INSTANCES OF FLASH FLOODING THIS MORNING BEFORE SNOW LEVELS DROP
ON THE BACKSIDE OF THE COLD FRONT PUSHING THROUGH THE WEST THIS
AFTERNOON. SNOW SHOWERS SPREAD INTO NORTHERN/CENTRAL ROCKIES THIS
AFTERNOON AND THE INTERMOUNTAIN WEST ON SUNDAY. SNOWFALL TOTALS OF
6-12 INCHES ARE PROBABLE FOR THE AFOREMENTIONED AREAS BY THE END
OF THE WEEKEND.
SURFACE HIGH PRESSURE EXTENDING FROM CENTRAL CANADA DOWN TO THE
GULF COAST WILL SUPPORT BELOW AVERAGE TEMPERATURES FOR THOSE
REGIONS THROUGH TONIGHT. PARTS OF THE SOUTHEAST WILL EXPERIENCE
LOW TEMPERATURES IN THE MID TO UPPER 30S WHICH MAY LEAD TO SOME
FROST/FREEZES. A DEEPENING UPPER TROUGH OVER THE NORTH-CENTRAL
U.S.AND RIDGE OVER MEXICO WILL PROMOTE ABOVE AVERAGE TEMPERATURES
ACROSS THE GREAT PLAINS TODAY AND SUNDAY BEFORE EXPANDING INTO THE
EAST BY MONDAY. ELSEWHERE, MIXED PRECIPITATION CAN BE EXPECTED TO
CONTINUE ACROSS PORTIONS OF UPSTATE NEW YORK AND NEW ENGLAND TODAY.
KEBEDE
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