150
FXUS01 KWBC 181952
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
351 PM EDT FRI OCT 18 2024
VALID 00Z SAT OCT 19 2024 - 00Z MON OCT 21 2024
...HEAVY MOUNTAIN SNOW CONTINUES FOR PORTIONS OF THE CENTRAL
ROCKIES THROUGH SUNDAY MORNING...
...HEAVY RAIN EXPECTED FOR THE WEST-CENTRAL HIGH PLAINS AND
PORTIONS OF THE PACIFIC NORTHWEST THIS WEEKEND...
...A LARGE AND SPRAWLING AREA OF HIGH PRESSURE PERSISTS ACROSS THE
EASTERN U.S. WITH PLEASANT WEATHER ON TAP THROUGH THE WEEKEND...
A STRONG AUTUMN STORM WILL CONTINUE TO SPIN ACROSS THE GREAT
BASIN, FOUR CORNERS, AND INTERMOUNTAIN WEST THROUGH SUNDAY MORNING
AND WILL REMAIN THE FOCUS FOR HEAVY MOUNTAIN SNOW ACROSS THE
HIGHER ELEVATIONS OF THE FOUR CORNERS STATES. SNOWFALL AMOUNTS OF
1 TO 2 FEET ARE LIKELY FOR PORTIONS OF THE CENTRAL ROCKIES ABOVE
9000 FEET BEFORE ALL IS SAID AND DONE, WITH LOCALLY HIGHER AMOUNTS
UP TO 3 FEET POSSIBLE ABOVE TIMBERLINE IN THE SAN JUAN MOUNTAINS
IN COLORADO. IN ADDITION TO THE SNOW, TEMPERATURES WILL ALSO FEEL
MUCH COLDER THAN RECENT WEEKS WITH HIGHS ONLY TOPPING OUT IN THE
40S AND 50S IN THE VALLEYS, AND IN THE 20S AND 30S IN THE HIGH
COUNTRY. AT NIGHT, TEMPERATURES WILL DIP WELL BELOW FREEZING,
MARKING AN END TO THE GROWING SEASON FOR MANY LOCATIONS.
THE SAME STORM THAT IS BRINGING A SIGNIFICANT PATTERN CHANGE WITH
MOUNTAIN SNOW AND MUCH COLDER TEMPERATURES TO THE INTERMOUNTAIN
WEST WILL ALSO BE RESPONSIBLE FOR POSSIBLE FLOODING CONCERNS
ACROSS THE WEST-CENTRAL HIGH PLAINS THIS WEEKEND. A PLUME OF
ENHANCED MOISTURE WILL STREAM NORTHWARD INTO THE REGION AND SET
THE STAGE FOR HEAVY RAINFALL FOR PORTIONS OF SOUTHEAST COLORADO,
SOUTHWEST KANSAS, NORTHEAST NEW MEXICO, WESTERN OKLAHOMA, AND THE
NORTHWEST TEXAS PANHANDLE SATURDAY INTO SUNDAY. GIVEN THE
POTENTIAL FOR 2 TO 4 INCHES OF RAIN WITH LOCALLY HIGHER AMOUNTS,
THE WEATHER PREDICTION CENTER CONTINUES TO MAINTAIN A SLIGHT RISK
OF EXCESSIVE RAINFALL TO HIGHLIGHT THE THREAT OF HEAVY RAIN AND
POSSIBLE INSTANCES OF FLASH FLOODING. ANOTHER AREA OF ENHANCED
RAINFALL WILL BE ACROSS NORTHWEST WASHINGTON, WHERE AN ATMOSPHERIC
RIVER EVENT WILL LIKELY AFFECT VANCOUVER ISLAND AND THE OLYMPIC
PENINSULA, PRODUCING A FEW INCHES OF RAINFALL ACROSS THE WINDWARD
TERRAIN.
FARTHER EAST, DRY AND PLEASANT WEATHER WILL BE THE STORY ACROSS
THE EASTERN U.S. THROUGH THE WEEKEND AS A LARGE AND SPRAWLING AREA
OF SURFACE HIGH PRESSURE REMAINS ANCHORED IN PLACE. SUNNY SKIES
AND LIGHT WINDS COMBINED WITH DAYTIME TEMPERATURES MODERATING INTO
THE 60S, 70S, AND EVEN NEARING 80 IN SPOTS WILL MAKE FOR
SPECTACULAR FALL WEATHER AND PERFECT FOR ENJOYING OUTDOOR
ACTIVITIES. AT NIGHT, CLEAR SKIES, LIGHT WINDS, AND DRY AIR WILL
ALLOW TEMPERATURES TO COOL BACK INTO THE 30S AND 40S FOR MOST, SO
REMEMBER TO BRING A JACKET IF VENTURING OUT LATER ON IN THE
EVENING OR EARLY IN THE MORNING THE NEXT COUPLE OF DAYS.
MILLER
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