Home > Products > Valid Products > PMD

000
FXUS01 KWBC 282006
PMDSPD

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

VALID 00Z SUN MAR 01 2015 - 00Z TUE MAR 03 2015

...SNOW AND ICE EVENT SETTING UP FROM THE MIDDLE MISSISSIPPI
VALLEY TO THE MID-ATLANTIC REGION...

...UNSETTLED WEATHER WILL CONTINUE ACROSS CALIFORNIA AND THE FOUR
CORNERS STATES...

...HEAVY RAIN AND THUNDERSTORMS EXPECTED FOR THE LOWER MISSISSIPPI
VALLEY...

WIDESPREAD PRECIPITATION IS EXPECTED TO DEVELOP OVER MUCH OF
EASTERN HALF OF THE NATION THE NEXT FEW DAYS AS A DISTURBANCE
CROSSES THE NORTHERN TIER AND MOISTURE SURGES NORTHWARD OUT OF THE
GULF OF MEXICO.  AN ARCTIC AIRMASS INITIALLY IN PLACE WILL KEEP
TEMPERATURES LOW ENOUGH TO SUPPORT A WIDE AXIS OF LIGHT TO
MODERATE SNOW ACCUMULATIONS FROM THE MIDDLE MISSISSIPPI VALLEY TO
THE NORTHERN MID-ATLANTIC STATES.  THE WARM GULF OF MEXICO AIR
MOVING IN OVER SLOW-TO-ERODE ARCTIC AIR WILL SET UP A ZONE OF
SLEET AND FREEZING RAIN...ESPECIALLY JUST EAST OF CENTRAL AND EVEN
SOUTHERN APPALACHIANS.

UNSETTLED WEATHER WILL CONTINUE ACROSS CALIFORNIA AND THE FOUR
CORNERS STATES THIS WEEKEND AND INTO EARLY NEXT WEEK AS AN UPPER
LOW CLOSES OFF OVER THE SOUTHWESTERN U.S..  PACIFIC MOISTURE
STREAMING INLAND...IMPULSES OF ENERGY EMBEDDED WITHIN THE FLOW
ALOFT...AND OROGRAPHIC EFFECTS WILL ALL HELP PRODUCE SOME HEFTY
PRECIPITATION TOTALS ALONG THE FAVORED SLOPES OF THE TERRAIN.
CONDITIONS WILL BE COLD ENOUGH FOR ACCUMULATING SNOW ACROSS MUCH
OF SIERRA NEVADA RANGES...THE GREAT BASIN...AND THE CENTRAL TO
SOUTHERN ROCKIES...WITH OVER A FOOT OF SNOW EXPECTED IN THE SAN
JUAN RANGES OF SOUTHWESTERN COLORADO.

PRECIPITATION WILL BEGIN TO FOCUS ALONG A FRONTAL BOUNDARY
STRENGTHENING IN THE SOUTHERN TIER OF THE NATION ON MONDAY.
PLENTY OF MOISTURE LIFTING NORTH OUT OF THE GULF OF MEXICO WILL
FUEL MODERATE TO HEAVY RAINS AND THUNDERSTORMS OVER THE LOWER
MISSISSIPPI VALLEY.


GERHARDT



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






000
FXUS01 KWBC 282006
PMDSPD

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

VALID 00Z SUN MAR 01 2015 - 00Z TUE MAR 03 2015

...SNOW AND ICE EVENT SETTING UP FROM THE MIDDLE MISSISSIPPI
VALLEY TO THE MID-ATLANTIC REGION...

...UNSETTLED WEATHER WILL CONTINUE ACROSS CALIFORNIA AND THE FOUR
CORNERS STATES...

...HEAVY RAIN AND THUNDERSTORMS EXPECTED FOR THE LOWER MISSISSIPPI
VALLEY...

WIDESPREAD PRECIPITATION IS EXPECTED TO DEVELOP OVER MUCH OF
EASTERN HALF OF THE NATION THE NEXT FEW DAYS AS A DISTURBANCE
CROSSES THE NORTHERN TIER AND MOISTURE SURGES NORTHWARD OUT OF THE
GULF OF MEXICO.  AN ARCTIC AIRMASS INITIALLY IN PLACE WILL KEEP
TEMPERATURES LOW ENOUGH TO SUPPORT A WIDE AXIS OF LIGHT TO
MODERATE SNOW ACCUMULATIONS FROM THE MIDDLE MISSISSIPPI VALLEY TO
THE NORTHERN MID-ATLANTIC STATES.  THE WARM GULF OF MEXICO AIR
MOVING IN OVER SLOW-TO-ERODE ARCTIC AIR WILL SET UP A ZONE OF
SLEET AND FREEZING RAIN...ESPECIALLY JUST EAST OF CENTRAL AND EVEN
SOUTHERN APPALACHIANS.

UNSETTLED WEATHER WILL CONTINUE ACROSS CALIFORNIA AND THE FOUR
CORNERS STATES THIS WEEKEND AND INTO EARLY NEXT WEEK AS AN UPPER
LOW CLOSES OFF OVER THE SOUTHWESTERN U.S..  PACIFIC MOISTURE
STREAMING INLAND...IMPULSES OF ENERGY EMBEDDED WITHIN THE FLOW
ALOFT...AND OROGRAPHIC EFFECTS WILL ALL HELP PRODUCE SOME HEFTY
PRECIPITATION TOTALS ALONG THE FAVORED SLOPES OF THE TERRAIN.
CONDITIONS WILL BE COLD ENOUGH FOR ACCUMULATING SNOW ACROSS MUCH
OF SIERRA NEVADA RANGES...THE GREAT BASIN...AND THE CENTRAL TO
SOUTHERN ROCKIES...WITH OVER A FOOT OF SNOW EXPECTED IN THE SAN
JUAN RANGES OF SOUTHWESTERN COLORADO.

PRECIPITATION WILL BEGIN TO FOCUS ALONG A FRONTAL BOUNDARY
STRENGTHENING IN THE SOUTHERN TIER OF THE NATION ON MONDAY.
PLENTY OF MOISTURE LIFTING NORTH OUT OF THE GULF OF MEXICO WILL
FUEL MODERATE TO HEAVY RAINS AND THUNDERSTORMS OVER THE LOWER
MISSISSIPPI VALLEY.


GERHARDT



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







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
$$






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
$$







    US Dept of Commerce
    National Oceanic and Atmospheric Administration
    National Weather Service
    1325 East West Highway
    Silver Spring, MD 20910
    Page Author: NWS Internet Services Team
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities