692
FXUS01 KWBC 271920
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
219 PM EST TUE JAN 27 2026
VALID 00Z WED JAN 28 2026 - 00Z FRI JAN 30 2026
..HEAVY PRECIPITATION TO BEGIN IN THE PACIFIC NORTHWEST TONIGHT
...LAKE EFFECT SNOW WILL CONTINUE TO BRING SNOWFALL TO THE GREAT
LAKES AND NORTHEAST REGIONS...
...FRIGID TEMPERATURES SET TO CONTINUE THROUGHOUT MUCH OF THE
EASTERN UNITED STATES...
AN UPPER-LEVEL TROUGH IN THE PACIFIC OCEAN WILL MAKE ITS WAY INTO
THE PACIFIC NORTHWEST LATER THIS EVENING. AN ACCOMPANIED SURFACE
FRONTAL SYSTEM IS EXPECTED TO ENTER THE REGION AS A RESULT,
BRINGING WIDESPREAD PRECIPITATION, WITH THE HEAVIEST FALLING IN
REGIONS OF NORTHWEST WASHINGTON. PRECIPITATION IN THE COASTAL
REGIONS WILL FALL AS RAIN, WHILE SNOW IS EXPECTED TO FALL IN THE
MOUNTAINOUS REGIONS. AFTER THE PASSAGE OF THIS SYSTEM, A SERIES OF
MID-LEVEL TROUGHS WILL REMAIN IN THE AREA AND CONTINUE TO PROMOTE
PRECIPITATION THROUGHOUT THE REST OF THE WEEK. FURTHER DOWNWIND IN
THE NORTHERN INTERMOUNTAIN WEST, UPSLOPE FLOW FROM THE
AFOREMENTIONED FRONTAL SYSTEM WILL LEAD TO SNOW AND MIXED
PRECIPITATION OVER THE NEXT COUPLE OF DAYS.
IN THE GREAT LAKES REGION, THE PRESENCE OF A SLOW MOVING
UPPER-LEVEL TROUGH WILL ALLOW FOR A FRONTAL SYSTEM TO QUICKLY MOVE
THROUGH THE REGION TONIGHT THROUGH WEDNESDAY MORNING. THIS WILL
AMPLIFY LAKE EFFECT SNOW GENERATION THROUGH WEDNESDAY MORNING
ACROSS SNOW-BELTS OF THE GREAT LAKES AND NORTHEAST. AFTER
WEDNESDAY, WEAK LAKE EFFECT SNOW WILL PERSIST AS A SURFACE TROUGH
INTRUDES INTO THE REGION.
MEANWHILE IN THE EASTERN TWO-THIRDS OF THE UNITED STATES, FRIGID
TEMPERATURES ARE SET TO CONTINUE THROUGHOUT THE NEXT SEVERAL DAYS.
OVER THE WEEKEND, ANOTHER BLAST OF ARCTIC AIR WILL SPREAD FROM THE
PLAINS THROUGH THE EAST AND SOUTHEAST BEGINNING ON FRIDAY, AND
MORE RECORD LOWS ARE EXPECTED AS FAR SOUTH AS FLORIDA. THIS ARCTIC
AIR WILL BE ACCOMPANIED BY CONTINUED STRONG WINDS, WITH EXTREMELY
COLD WIND CHILL VALUES EXPECTED TO DROP TO THE -20S IN PARTS OF
THE UPPER OHIO VALLEY TONIGHT. LOW TEMPERATURES WILL CONTINUE TO
POSE LIFE-THREATENING RISK OF HYPOTHERMIA AND FROSTBITE. CONTINUE
TO COVER UP IF YOU ARE OUTSIDE, ENSURE THAT PETS AND ANIMALS HAVE
PROTECTION FROM THE COLD, AND CONTINUE TO MITIGATE FROZEN PIPES.
BLANCO-ALCALA
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