048
FXUS01 KWBC 111851
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
150 PM EST MON NOV 11 2024
VALID 00Z TUE NOV 12 2024 - 00Z THU NOV 14 2024
...AN ATMOSPHERIC RIVER WILL BRING HEAVY, LOW ELEVATION RAIN AND
HIGH ELEVATION MOUNTAIN SNOW TO THE PACIFIC NORTHWEST AND NORTHERN
CALIFORNIA BEGINNING TUESDAY EVENING...
...LINGERING PRECIPITATION CHANCES FOR THE NORTHEAST AND CAROLINAS
MONDAY WITH SOME LOCALLY HEAVIER RAINFALL ALONG THE LOWER
MISSISSIPPI/TENNESSEE VALLEY AREAS...
...ABOVE AVERAGE TEMPERATURES CONTINUE FOR MUCH OF THE COUNTRY,
MORE SEASONABLE TEMPERATURES FOR THE NORTHEAST AND THE WEST ON
TUESDAY...
A DEEP UPPER-LEVEL TROUGH WILL BRING A SUBSTANTIAL PLUME OF
PACIFIC MOISTURE TO THE NORTHWEST U.S. BEGINNING TUESDAY EVENING.
THIS ATMOSPHERIC RIVER EVENT WILL PRODUCE LOW ELEVATION RAINFALL
ALONG WITH HIGH ELEVATION HEAVY SNOWFALL THROUGHOUT THE DAY ON
WEDNESDAY. BETWEEN 1-3 FEET OF SNOW CAN BE EXPECTED OVER THE
HIGHEST ELEVATIONS OF THE CASCADES WHILE BETWEEN 1-2 FEET OF SNOW
ARE POSSIBLE FOR PARTS OF THE NORTHERN/CENTRAL ROCKIES BY
WEDNESDAY EVENING.
SOME LIGHT PRECIPITATION MAY OCCUR FROM THE LOWER GREAT LAKES INTO
THE NORTHEAST THROUGH TUESDAY MORNING. LIGHT RAIN IS PROBABLE OUT
AHEAD OF A COLD FRONT MOVING THROUGH THE NORTHEAST TONIGHT BEFORE
TRANSITIONING INTO POST-FRONTAL LIGHT MIXED PRECIPITATION EARLY
TUESDAY MORNING WHEN TEMPERATURES BOTTOM OUT IN THE 20S AND WINDS
BEGIN TO BLOW OUT OF THE NORTHWEST. MID-LEVEL TROUGHING ABOVE A
LOW PRESSURE SYSTEM MOVING THROUGH THE MISSISSIPPI VALLEY WILL
SUPPORT RETURN FLOW OF MOISTURE FROM THE GULF OF MEXICO LEADING TO
SHOWERS AND THUNDERSTORM ACTIVITY ACROSS THE MISSISSIPPI VALLEY
AND MIDWEST/SOUTHEAST ON WEDNESDAY AND THURSDAY. SOME POCKETS OF
HEAVY RAINFALL ARE POSSIBLE OVER THE LOWER MISSISSIPPI/TENNESSEE
VALLEY ON WEDNESDAY.
TEMPERATURES ARE LIKELY TO REMAIN ABOVE AVERAGE ACROSS MUCH OF THE
CENTRAL AND SOUTHERN U.S. THIS WEEK. COLD FRONTS MOVING THROUGH
THE EAST AND WEST WILL SUPPORT BELOW AVERAGE TEMPERATURES OVER THE
NEXT COUPLE OF DAYS.
KEBEDE
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