340
FXUS01 KWBC 230805
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 AM EST THU NOV 23 2023
VALID 12Z THU NOV 23 2023 - 12Z SAT NOV 25 2023
...A SNOW EVENT IS FORECAST TO IMPACT THE NORTHERN AND CENTRAL
ROCKIES AS WELL AS THE NEARBY HIGH PLAINS DURING THANKSGIVING
HOLIDAY WEEKEND...
...ARCTIC AIR WILL OVERSPREAD MUCH OF THE NORTHERN PORTION OF THE
COUNTRY; MAINLY DRY FOR THE REMAINDER OF THE COUNTRY THROUGH THE
HOLIDAY WEEKEND...
ON THIS THANKSGIVING DAY, A SNOW EVENT IS BREWING OVER THE
NORTHERN ROCKIES AS MOISTURE FROM A A PACIFIC FRONTAL SYSTEM
BEGINS TO INTERACT WITH AN INTRUSION OF ARCTIC AIR FROM ACROSS
CENTRAL AND WESTERN CANADA. THIS INTERACTION WILL LEAD TO AN
EXPANDING AREA OF SNOW COMMENCING TODAY OVER SOUTHERN IDAHO INTO
NORTHERN NEVADA, AND ESPECIALLY OVER WYOMING BY TONIGHT FOLLOWING
THE PASSAGE OF AN ARCTIC FRONT. FURTHER INTERACTIONS OF THE TWO
SYSTEMS WILL PUSH THE SNOW FARTHER SOUTHEAST INTO MUCH OF COLORADO
AND UTAH ON FRIDAY. THE SNOW WILL ALSO SPREAD FARTHER INTO THE
NEARBY HIGH PLAINS FROM NORTH TO SOUTH AS THE CENTER OF A COLD
DOME OF HIGH PRESSURE SETTLES SOUTHEASTWARD INTO THE NORTHERN
PLAINS ON FRIDAY. RAPIDLY FALLING TEMPERATURES ALONG WITH
INCREASINGLY STRONG AND GUSTY NORTHERLY WINDS WILL ACCOMPANY THE
SNOW, WITH GALE-FORCE WINDS POSSIBLY IMPACTING SOUTHWESTERN
WYOMING TONIGHT. IT APPEARS THAT GENERALLY MORE THAN 6 INCHES OF
SNOW CAN BE EXPECTED AREA-WIDE FROM THE NORTH-CENTRAL PORTION OF
THE HIGH PLAINS TO LOCALLY TERRAIN-ENHANCED AMOUNTS OF OVER A FOOT
IN PORTIONS OF WYOMING AND COLORADO THROUGH THE NEXT COUPLE OF
DAYS. THE SNOW SHOULD HAVE MOSTLY TAPERED OFF OVER WYOMING BY
SATURDAY MORNING BUT WILL LIKELY LINGER ACROSS PORTIONS OF
COLORADO AS AN UPPER-LEVEL DISTURBANCE SWINGS ACROSS THE REGION.
WET SNOW IS FORECAST TO DIP AS FAR SOUTH AS NORTHERN NEW MEXICO
EARLY ON SATURDAY WHEN THE EASTERN EDGE OF THE SNOW BEGINS TO HEAD
TOWARD THE CENTRAL PLAINS.
MEANWHILE, THE EAST COAST HAS GENERALLY CLEARED OUT BEHIND AN
EXITING LOW PRESSURE SYSTEM INTO THE CANADIAN MARITIMES JUST IN
TIME FOR THANKSGIVING FESTIVITIES. ONLY NEAR THE EASTERN BORDER
OF MAINE IS STILL RECEIVING SNOW FROM THE SYSTEM EARLY THIS
MORNING. NEVERTHELESS, MUCH OF THE NORTHEAST WILL LIKELY CONTEND
WITH GUSTY WINDS AS THE EXITING STORM CONTINUES TO DEEPEN. SOME
SNOW SHOWERS ARE FORECAST TO RESUME OVER INTERIOR NEW ENGLAND BY
THIS EVENING AND ON FRIDAY AS AN ARCTIC FRONT APPROACHES FROM THE
WEST.
MUCH OF THE REMAINDER OF THE COUNTRY WILL REMAIN DRY AS WE HEAD
FURTHER INTO THE HOLIDAY WEEKEND. THE EXCEPTION WILL BE NEAR THE
GULF COAST WHERE AN UPPER-LEVEL DISTURBANCE WILL SEND SOME LIGHT
SHOWERS FROM WEST TO EAST ACROSS THE REGION. SHOWERS WILL ALSO
LINGER OVER SOUTHERN FLORIDA NEAR A STATIONARY FRONT.
TEMPERATURES ACROSS THE COUNTRY WILL LIKELY AVERAGE BELOW NORMAL
FOR A CHANGE WITH ARCTIC AIR INTRUSION FROM THE NORTH. THE
COLDEST ANOMALIES WILL LIKELY BE OVER THE CENTRAL HIGH PLAINS IN
THE MORNINGS OF FRIDAY AND SATURDAY AS TEMPERATURES DIP INTO THE
TEENS AND 20S. THE SOUTH WILL REMAIN COOLER THAN NORMAL THROUGH
THE HOLIDAY WEEKEND BEHIND THE FIRST FRONT WHILE THE NORTHEAST
WILL GET COLDER ON SATURDAY BEHIND THE SECOND FRONT.
HAVE A SAFE AND HAPPY THANKSGIVING!
KONG
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