Prognostic Meteorological Discussion
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000
FXUS01 KWBC 041939
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
238 PM EST WED MAR 04 2015

VALID 00Z THU MAR 05 2015 - 00Z SAT MAR 07 2015

...HEAVY RAIN WILL TRANSITION TO HEAVY SNOW FOR PLACES FROM THE
SOUTHERN PLAINS TO THE MID-ATLANTIC...

...MODERATE TO SIGNIFICANT ICING POSSIBLE FROM PORTIONS OF THE
SOUTHERN PLAINS TO THE SOUTHEAST...

...TEMPERATURES DIP WELL BELOW SEASONABLE NORMAL ACROSS THE
CENTRAL AND EASTERN U.S. BY THE END OF THE WORK WEEK...


A RATHER VIGOROUS AND ELONGATED PIECE OF ENERGY IN THE MID TO
UPPER LEVELS, MOVING FROM THE PLAINS TO THE MID-ATLANTIC TODAY AND
TOMORROW, WILL INTERACT WITH AN ARCTIC AIR MASS AND SURFACE COLD
FRONT PLUNGING SOUTH AND EASTWARD INTO THE SOUTHEASTERN STATES
THIS EVENING. A WIDESPREAD AREA OF PRECIPITATION ON THE BACKSIDE
OF THE BOUNDARY WILL CONTINUE FOR PLACES FROM THE SOUTHERN/CENTRAL
PLAINS TO THE NORTHEAST U.S., ENDING BY TOMORROW AFTERNOON FROM
THE NORTHWEST TO THE SOUTHEAST. INITIALLY, MODERATE TO HEAVY RAIN
WILL BE THE PRIMARY PRECIPITATION TYPE FROM THE SOUTHERN PLAINS TO
THE MID-ATLANTIC, AND COMBINED WITH SNOW MELT, COULD RESULT IN
FLOOD OR FLASH FLOODING ISSUES, ESPECIALLY ACROSS THE LOWER OHIO
VALLEY AND WESTERN MID-ATLANTIC REGIONS. AS COLD AIR FILTERS IN
OVERNIGHT TONIGHT, THE HEAVY RAIN WILL TRANSITION TO SLEET OR
FREEZING RAIN FROM CENTRAL/SOUTH TEXAS TO THE LOWER MISSISSIPPI
VALLEY INTO THE SOUTHEAST AND FROM RAIN TO SLEET/FREEZING RAIN TO
HEAVY SNOW FROM THE MID-MISSISSIPPI VALLEY TO THE MID-ATLANTIC.
MODERATE TO SIGNIFICANT SLEET AND FREEZING RAIN COULD BE POSSIBLE
ACROSS THE SOUTHERN STATES, WHILE SIGNIFICANT SNOWFALL BETWEEN 6
AND 12 INCHES IS POSSIBLE FROM THE TENNESSEE VALLEY TO THE CENTRAL
MID-ATLANTIC ON THURSDAY. REFER TO THE SUITE OF PRODUCTS FROM THE
WPC WINTER WEATHER DESK FOR MORE DETAILED INFORMATION.

BEHIND THE FRONT, WINTER HANGS ON TIGHT AS TEMPERATURES PLUMMET
ACROSS THE EASTERN THIRD OF THE NATION. BY THURSDAY EVENING, COLD
HIGH PRESSURE DOMINATES RESULTING IN UNSEASONABLY COLD
TEMPERATURES FROM THE PLAINS TO THE EASTERN SEABOARD. TEMPERATURE
VALUES THE REMAINDER OF THE WORK WEEK COULD BE ANYWHERE FROM 10 TO
35 DEGREES BELOW NORMAL!


SANTORELLI


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




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