Prognostic Meteorological Discussion
Issued by NWS

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4
000
FXUS01 KWBC 280820
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
320 AM EST SAT FEB 28 2015

VALID 12Z SAT FEB 28 2015 - 12Z MON MAR 02 2015

...HEAVY SNOW FOR PARTS OF THE CENTRAL ROCKIES...

...HEAVY RAIN OVER PARTS OF THE SOUTHWEST...

...TEMPERATURES WILL BE 15 TO 30 DEGREES BELOW AVERAGE FROM THE
CENTRAL/SOUTHERN PLAINS...

UPPER-LEVEL ENERGY OVER THE PACIFIC NORTHWEST WILL MOVE SOUTHWARD
AND FORM A CLOSED UPPER-LEVEL LOW JUST OFF THE CENTRAL CALIFORNIA
COAST BY SUNDAY.  THE SYSTEM WILL PRODUCE SNOW OVER PARTS OF THE
GREAT BASIN TO PARTS OF THE CENTRAL/SOUTHERN ROCKIES AND PARTS OF
CALIFORNIA THROUGH SUNDAY EVENING.  RAIN WILL ALSO DEVELOP OVER
THE LOWER ELEVATIONS OF THE SOUTHWEST AND CALIFORNIA ON SATURDAY
AND SUNDAY.  BY SUNDAY EVENING, AN AREA OF LIGHT TO MODERATE RAIN
WILL DEVELOP OVER PARTS OF THE SOUTHWEST.

MEANWHILE, COLD HIGH PRESSURE OVER THE EASTERN OHIO VALLEY WILL
MOVE EASTWARD OFF THE MID-ATLANTIC COAST BY SUNDAY EVENING.
UPPER-LEVEL JET DYNAMICS AND DISORGANIZED UPPER-LEVEL ENERGY
MOVING NORTHEASTWARD OVER THE MISSISSIPPI VALLEY TO THE NORTHEAST
WILL PRODUCE A REGION OF SNOW OVER PARTS OF THE CENTRAL/SOUTHERN
PLAINS THAT WILL EXPAND EASTWARD INTO THE OHIO VALLEY BY SATURDAY
EVENING.  THE AREA OF SNOW WILL MOVE EASTWARD INTO THE NORTHEAST
TO THE GREAT LAKES BY SUNDAY EVENING.

RETURN FLOW OFF THE GULF OF MEXICO WILL AID IN PRODUCING RAIN OVER
PARTS OF THE SOUTHERN PLAINS ON SATURDAY AND SUNDAY.  SHOWERS AND
THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE WESTERN GULF COAST
AND THE LOWER MISSISSIPPI VALLEY ON SUNDAY, TOO.  A REGION OF RAIN
AND FREEZING RAIN WILL DEVELOP OVER PARTS OF CENTRAL TEXAS INTO
OKLAHOMA ON SATURDAY.  THE RAIN/FREEZING RAIN WILL EXPAND INTO
PARTS OF THE MIDDLE MISSISSIPPI VALLEY/OHIO VALLEY BY SUNDAY
MORNING.  BY SUNDAY EVENING THE AREA OF RAIN/FREEZING RAIN WILL
MOVE INTO PARTS OF THE NORTHERN MID-ATLANTIC.

ELSEWHERE, UPPER-LEVEL JET DYNAMICS AND EASTERLY FLOW OFF THE
ATLANTIC WILL AID IN PRODUCING AREAS OF RAIN AND
SHOWERS/THUNDERSTORMS OVER PARTS OF FLORIDA AND LATER THE
SOUTHEAST COAST THROUGH SUNDAY MORNING.  ADDITIONALLY, UPPER-LEVEL
ENERGY MOVING INTO THE PACIFIC NORTHWEST BY SUNDAY EVENING WILL
PRODUCE LIGHT RAIN OVER PARTS OF THE NORTHWEST COAST.


ZIEGENFELDER


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV
$$





USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.