725
FXUS01 KWBC 280806
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 AM EST THU DEC 28 2023
VALID 12Z THU DEC 28 2023 - 12Z SAT DEC 30 2023
...SCATTERED AREAS OF MIXED RAIN AND SNOW OVER THE CENTRAL TO THE
EASTERN U.S. CONTINUE TO ROTATE AROUND THE WEAKENING BUT HUGE
CIRCULATION OF THE FORMER WINTER STORM...
...HEAVY RAIN AND FLOOD THREAT ASSOCIATED WITH A COASTAL LOW
EXPECTED TO DEPART NORTHERN MID-ATLANTIC/SOUTHERN NEW ENGLAND
LATER THIS MORNING...
...UNSETTLED WEATHER LINGERS NEAR THE WEST COAST FOR THE NEXT
COUPLE OF DAYS...
...ABOVE NORMAL TEMPERATURES ACROSS THE NORTHERN TIER WILL BE
CONTRASTED WITH BELOW AVERAGE TEMPERATURES ACROSS THE SOUTHERN
TIER...
ALTHOUGH ALL WINTER WEATHER WARNINGS AND ADVISORIES RELATED TO THE
MOST RECENT BLIZZARD ACROSS THE NORTHERN AND CENTRAL PLAINS HAVE
BEEN DISCONTINUED, THE HUGE UPPER-LEVEL CIRCULATION ASSOCIATED
WITH THE STORM WILL TAKE SOME TIME TO SPIN DOWN. THE REMAINING
MIXED RAIN/LIGHT SNOW OVER CENTRAL PLAINS IS EXPECTED TO TAPER OFF
BY LATER THIS AFTERNOON. MEANWHILE, SOME WRAP-AROUND MOISTURE
FROM THE GREAT LAKES IS FORECAST TO ROTATE SOUTHWARD INTO THE
MIDWEST TO PROVIDE MIXED RAIN AND WET SNOW TODAY BEFORE TAPERING
OFF THIS EVENING. SOME HEAVIER, BUT BRIEF, SNOWFALL MAY OCCUR
WITHIN THIS AREA OF PRECIPITATION. NEVERTHELESS, ONLY MINOR SNOW
ACCUMULATIONS ARE EXPECTED DUE TO TEMPERATURES HOVERING JUST ABOVE
FREEZING.
IN THE EAST, A STRENGTHENING COASTAL LOW TRACKING JUST OFF THE
MID-ATLANTIC STATES IS SPREADING AN AREA OF MODERATE TO HEAVY RAIN
ACROSS THE NORTHERN MID-ATLANTIC INTO SOUTHERN NEW ENGLAND EARLY
THIS MORNING. THE HEAVY RAIN MAY PRODUCE EXCESSIVE RUNOFF,
RESULTING IN THE FLOODING OF RIVERS, CREEKS, STREAMS, AND OTHER
LOW-LYING AND FLOOD-PRONE LOCATIONS. ONSHORE WINDS ALONG WITH
ASTRONOMICAL HIGH TIDE ARE EXPECTED TO PRODUCE MINOR COASTAL
FLOODING ALONG VULNERABLE WATERFRONT AND SHORELINE AREAS IN THE
NEW YORK CITY METRO INTO THIS MORNING. THE MODERATE TO LOCALLY
HEAVY RAIN SHOULD MOVE ACROSS SOUTHEASTERN NEW ENGLAND THIS
AFTERNOON AS THE COASTAL LOW TRACKS SOUTHEAST OF LONG ISLAND. BY
FRIDAY, THE LOW WILL BEGIN TO MOVE EAST OF NEW ENGLAND SLOWLY,
WITH SOME BANDS OF MODERATE RAIN POSSIBLY ROTATE BACK TOWARD
SOUTHEAST NEW ENGLAND COAST LATER IN THE AFTERNOON. ON-AND-OFF
RAIN SHOWERS CAN BE EXPECTED TO LINGER ACROSS MUCH OF THE
REMAINING NORTHEAST, POSSIBLY CHANGING TO LIGHT WET SNOW OVER
MAINE ON FRIDAY. LIGHT WET SNOW IS EXPECTED TO LINGER ALONG THE
APPALACHIANS AS WELL.
ACROSS FLORIDA, A ROUND OF RAIN IS FORECAST TO PASS SOUTHERN
FLORIDA TODAY AS A SUBTROPICAL JET STREAM IN CONJUNCTION WITH A
WAVE OF LOW PRESSURE WILL BE IN THE VICINITY.
MEANWHILE, MOISTURE WELL AHEAD OF A COUPLE OF LARGE PACIFIC
CYCLONES IS FORECAST TO PRODUCE UNSETTLED WEATHER ALONG THE WEST
COAST FOR THE NEXT COUPLE OF DAYS. THESE SYSTEMS WILL GENERATE
RAIN AND HIGH ELEVATION SNOW OVER THE PACIFIC NORTHWEST AND
CALIFORNIA, WHILE MUCH OF THE REMINDER OF THE WESTERN U.S. IS
FORECAST TO REMAIN DRY. MIXED PRECIPITATION IS FORECAST TO REACH
INTO THE GREAT BASIN BY SATURDAY MORNING.
UNDER THIS ANOMALOUS WEATHER PATTERN, MILDER THAN NORMAL
TEMPERATURES WILL BE FOUND ACROSS THE NORTHERN TIER OF THE COUNTRY
INTO MUCH OF THE WESTERN U.S. WHILE COOLER THAN NORMAL CONDITIONS
WILL SHIFT SLOWLY ACROSS THE SOUTHERN TIER TOWARD THE SOUTHEASTERN
U.S. THROUGH THE NEXT COUPLE OF DAYS. IN FACT, MILD OVERNIGHT
TEMPERATURES WILL BE MORE THAN 20 DEGREES ABOVE NORMAL FROM THE
NORTHERN PLAINS TO THE NORTHEAST WHERE RECORD WARM MINIMUM
TEMPERATURES WILL LIKELY BE ESTABLISHED ESPECIALLY THIS MORNING.
KONG
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