Prognostic Meteorological Discussion
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
000
FXUS01 KWBC 210759
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
259 AM EST TUE FEB 21 2017

VALID 12Z TUE FEB 21 2017 - 12Z THU FEB 23 2017

...HEAVY RAIN AND MOUNTAIN SNOW POSSIBLE INTO TUESDAY ACROSS
PORTIONS OF THE WESTERN U.S...

...HEAVY RAIN POSSIBLE INTO TUESDAY ACROSS PORTIONS OF THE CENTRAL
GULF COAST...

...RECORD HIGH TEMPERATURES POSSIBLE THROUGH MIDWEEK ACROSS
PORTIONS OF THE CENTRAL AND EASTERN U.S...

RAIN AND MOUNTAIN SNOW WILL PERSIST ACROSS MUCH OF THE WEST AS A
VIGOROUS LOW PRESSURE SYSTEM CROSSES THE INTERMOUNTAIN REGION AND
INTO THE NORTHERN HIGH PLAINS/UPPER MIDWEST. HEAVY RAIN MAY RESULT
IN FLOODING FOR SOME AREAS, AND HEAVY SNOW WILL BE POSSIBLE AT
HIGH ELEVATION LOCATIONS. PRECIPITATION WILL SLOWLY DECREASE OVER
THE PACIFIC NORTHWEST AND CALIFORNIA BY MIDWEEK AS THE SYSTEM
REACHES THE CENTRAL U.S. THE POTENTIAL FOR HEAVY SNOW IN THE
NORTHERN ROCKIES WILL TAPER OFF BY THIS AFTERNOON WHILE CHANCES
FOR SNOW IN THE GREAT BASIN WILL CONTINUE INTO WEDNESDAY.

SHOWERS AND THUNDERSTORMS WILL PERSIST FROM THE CENTRAL GULF COAST
TO NORTHEAST INTO TODAY AS A SLOW MOVING COLD FRONT PASSES THROUGH
THE MISSISSIPPI/OHIO VALLEYS AND THE GREAT LAKES. AREAS OF HEAVY
RAIN MAY BE POSSIBLE OVER THE CENTRAL GULF COAST. A WINTRY MIX
WILL BE POSSIBLE FOR PORTIONS OF NEW ENGLAND TONIGHT BEFORE
TRANSITIONING TO MOSTLY SNOW DURING THE DAY ON WEDNESDAY. RAIN
WILL BE POSSIBLE ACROSS THE SOUTHEAST AND SOUTHERN MID-ATLANTIC
REGION THROUGH WEDNESDAY EVENING AS ANOTHER LOW PRESSURE SYSTEM
TRACKS THROUGH THE GULF OF MEXICO AND FLORIDA.

PORTIONS OF THE CENTRAL AND EASTERN U.S. OBSERVED WARMER THAN
USUAL CONDITIONS OF LATE AND THAT WILL PERSIST THIS WEEK. WITH AN
EXPANSIVE HIGH PRESSURE ALOFT, AVERAGE TEMPERATURES ARE FORECAST
TO RANGE 20 TO 40 DEGREES ABOVE AVERAGE FROM THE CENTRAL AND
NORTHERN PLAINS TO THE GREAT LAKES, WITH MANY AREAS REACHING WELL
INTO THE 70S. TEMPERATURES EXCEEDING 20 DEGREES ABOVE AVERAGE WILL
REACH THE MID-ATLANTIC REGION BY WEDNESDAY. TEMPERATURES RECORDS
MAY BE TIES OR BROKEN ACROSS THESE AREAS THROUGH WEDNESDAY.


CAMPBELL


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





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