Prognostic Meteorological Discussion
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000
FXUS01 KWBC 300703
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
303 AM EDT SUN APR 30 2017

VALID 12Z SUN APR 30 2017 - 12Z TUE MAY 02 2017

...SEVERE THUNDERSTORM AND FLASH FLOODING THREATS WILL CONTINUE
ACROSS PORTIONS OF THE MISSISSIPPI AND OHIO VALLEYS...

...HEAVY SNOW AND GUSTY WINDS EXPECTED FOR PORTIONS OF THE HIGH
PLAINS...

AN INTENSIFYING LOW PRESSURE SYSTEM ACROSS THE CENTRAL U.S. WILL
BRING A RANGE OF WEATHER HAZARDS TO THE CENTRAL AND EASTERN U.S.
TODAY AND MONDAY. AS THE SURFACE LOW MOVES FROM THE CENTRAL PLAINS
TOWARD THE UPPER MISSISSIPPI VALLEY TODAY, NUMEROUS SHOWERS AND
THUNDERSTORMS ARE EXPECTED, FROM THE LOWER MISSISSIPPI VALLEY TO
THE GREAT LAKES. SEVERE THUNDERSTORMS AND FLASH FLOODING WILL BOTH
BE POSSIBLE ACROSS THESE AREAS. PLEASE REFER TO PRODUCTS ISSUED BY
THE STORM PREDICTION CENTER FOR FURTHER DETAILS ON THE SEVERE
WEATHER THREAT. ON MONDAY, AS THE COLD FRONT MOVES EAST, SHOWERS
AND THUNDERSTORMS ARE EXPECTED TO SPREAD ACROSS MUCH OF THE
EASTERN U.S., INCLUDING THE MAJOR EAST COAST CITIES BY MONDAY
AFTERNOON AND EVENING.

ON THE WESTERN SIDE OF THE LOW PRESSURE SYSTEM, COLD AIR IN PLACE
WILL ALLOW PRECIPITATION TO FALL AS SNOW TODAY FROM THE CENTRAL
HIGH PLAINS TO PORTIONS OF MIDWEST, AND CONTINUING ACROSS PORTIONS
OF THE UPPER MIDWEST INTO MONDAY. HEAVY SNOW IS POSSIBLE TODAY
ACROSS THE CENTRAL HIGH PLAINS. ADDITIONALLY, GUSTY WINDS
ACCOMPANYING THE SNOWFALL MAY LEAD TO BLIZZARD CONDITIONS FOR SOME
AREAS.

ELSEWHERE, A PACIFIC COLD FRONT WILL BRING SCATTERED RAIN AND
MOUNTAIN SNOW SHOWERS FROM THE NORTHWEST TO THE NORTHERN ROCKIES
TODAY INTO EARLY MONDAY. TEMPERATURES ACROSS THE NATION WILL BE
WELL BELOW AVERAGE ACROSS THE CENTRAL U.S. IN THE AREAS BEING
AFFECTED BY THE WINTER STORM. ABOVE AVERAGE TEMPERATURES ARE
EXPECTED ONCE AGAIN TODAY ACROSS MUCH OF THE EASTERN U.S., WHERE
HIGH TEMPERATURES MAY REACH 10 TO 20 DEGREES ABOVE AVERAGE.

RYAN

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

$$





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