Prognostic Meteorological Discussion
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000
FXUS01 KWBC 212019
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
318 PM EST SUN JAN 21 2018

VALID 00Z MON JAN 22 2018 - 00Z WED JAN 24 2018

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
EASTERN TEXAS AND THE LOWER MISSISSIPPI VALLEY...

...HEAVY SNOW POSSIBLE FROM THE CENTRAL PLAINS TO THE UPPER
MISSISSIPPI VALLEY AND OVER THE CASCADES...

...RAIN/FREEZING RAIN POSSIBLE FROM THE CENTRAL PLAINS INTO THE
UPPER GREAT LAKES AND INTO NORTHERN NEW ENGLAND...

...HEAVY RAIN POSSIBLE OVER PARTS OF THE PACIFIC
NORTHWEST/NORTHERN CALIFORNIA AND NORTHERN NEW ENGLAND COAST...

A STORM OVER THE CENTRAL PLAINS WILL LIFT NORTHEASTWARD TO THE
GREAT LAKES BY TUESDAY.  THE SYSTEM WILL PRODUCE SNOW OVER PARTS
OF THE CENTRAL ROCKIES THAT WILL END OVERNIGHT SUNDAY.  SNOW WILL
ALSO DEVELOP OVER THE CENTRAL PLAINS, ON SUNDAY EVENING, THAT WILL
EXPAND INTO UPPER MISSISSIPPI VALLEY/UPPER GREAT LAKES BY MONDAY
MORNING.  THE SNOW WILL BE HEAVY AT TIMES OVER THE CENTRAL PLAINS
OVERNIGHT SUNDAY AND OVER PARTS OF THE UPPER MISSISSIPPI VALLEY ON
MONDAY INTO MONDAY EVENING.  OVERNIGHT MONDAY, THE SNOW WILL STOP
OVER THE CENTRAL PLAINS AS SNOW MOVES INTO THE MIDDLE MISSISSIPPI
VALLEY AND WESTERN OHIO VALLEY.  ON MONDAY AFTERNOON INTO EVENING,
SNOW WILL DEVELOP OVER PARTS OF NORTHERN NEW ENGLAND CONTINUING
INTO TUESDAY.

IN ADDITION, RAIN WILL DEVELOP OVER PARTS OF THE MIDDLE
MISSISSIPPI VALLEY INTO THE GREAT LAKES ON SUNDAY EVENING THAT
WILL EXPAND INTO THE OHIO VALLEY/LOWER GREAT LAKES BY MONDAY
MORNING.   THE RAIN WILL EXPAND INTO SOUTHERN NEW ENGLAND BY
MONDAY EVENING AND INTO THE NORTHERN MID-ATLANTIC OVERNIGHT
MONDAY.  IN THE TRANSITION ZONE BETWEEN THE RAIN AND SNOW,
RAIN/FREEZING RAIN WILL DEVELOP IN BANDS FROM THE CENTRAL PLAINS
INTO THE GREAT LAKES, ON SUNDAY EVENING INTO MONDAY, AND INTO NEW
ENGLAND OVERNIGHT MONDAY INTO TUESDAY.

ADDITIONALLY, SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF
THE SOUTHERN PLAINS INTO THE LOWER MISSISSIPPI VALLEY ON MONDAY
EVENING ADVANCING TO THE TENNESSEE VALLEY/CENTRAL GULF COAST BY
MONDAY MORNING.  BY MONDAY EVENING, THE SHOWERS AND THUNDERSTORMS
WILL MOVE TO PARTS OF THE OHIO VALLEY SOUTHWARD TO THE EASTERN
GULF COAST AND TO PARTS OF THE MID-ATLANTIC INTO THE SOUTHEAST BY
TUESDAY MORNING.

MEANWHILE, UPPER-LEVEL ENERGY WILL MOVE INLAND OVER THE PACIFIC
NORTHWEST MOVING EASTWARD TO THE NORTHERN PLAINS BY TUESDAY.

MORE TO FOLLOW

ZIEGENFELDER


GRAPHICS AVAILABLE AT
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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