Prognostic Meteorological Discussion
Issued by NWS

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535
FXUS01 KWBC 230756
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
256 AM EST THU FEB 23 2017

VALID 12Z THU FEB 23 2017 - 12Z SAT FEB 25 2017

...LOCALLY HEAVY RAIN POSSIBLE ACROSS PORTIONS OF THE FLORIDA
PENINSULA THROUGH THURSDAY MORNING...

...RECORD WARM TEMPERATURES POSSIBLE FOR MUCH OF THE CENTRAL AND
EASTERN U.S. THROUGH FRIDAY...

...WINTER STORM EXPECTED TO BRING HEAVY SNOW AND GUSTY WINDS FROM
PORTIONS OF THE CENTRAL AND NORTHERN ROCKIES TO THE UPPER
MIDWEST...

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO PERSIST THIS MORNING
ALONG THE SOUTHEAST COAST AS A LOW PRESSURE SYSTEM CONTINUES
TRACKING EASTWARD OVER THE ATLANTIC OCEAN. A SWATH OF THE EASTERN
FLORIDA COASTLINE MAY HAVE ISOLATED HEAVY RAIN AS WARM, MOIST AIR
DRAWS IN AROUND THE CENTRAL LOW PRESSURE. SHOWER ACTIVITY WILL
TAPER OFF DURING THE DAY AS THE SYSTEM PUSHES FURTHER OFFSHORE.

MUCH OF THE CENTRAL AND EASTERN STATES WILL CONTINUE TO OBSERVE
WARMER THAN AVERAGE TEMPERATURES THROUGH FRIDAY WITH A BROAD AREA
OF HIGH PRESSURE IN PLACE ALOFT. FORECAST HIGHS RANGING 15 TO 30
DEGREES ABOVE SEASONAL AVERAGE WILL BE POSSIBLE FROM THE LOWER
MISSISSIPPI VALLEY TO THE SOUTHEAST AND MID-ATLANTIC. THE
WIDESPREAD WARMTH MAY LEAD TO SEVERAL LOCATIONS TO REACH OR EXCEED
DAILY RECORDS.

A WINTER STORM IS EXPECTED TO DEVELOP AND TRACK FROM THE ROCKIES
TO THE UPPER MIDWEST OVER THE NEXT FEW DAYS. A SURFACE LOW
SPINNING UP IN THE LEE OF THE COLORADO ROCKIES WILL HELP GENERATE
SNOW, POSSIBLY HEAVY SNOW, FROM THE CENTRAL AND NORTHERN ROCKIES
EAST INTO THE HIGH PLAINS. THIS AREA OF LOW PRESSURE IS EXPECTED
TO DEEPEN TODAY AS IT HEADS THROUGH THE CENTRAL PLAINS, AND INTO
THE MIDWEST ON FRIDAY. THE SYSTEM IS EXPECTED TO BRING POTENTIALLY
HEAVY SNOW AND GUSTY WINDS TO A LARGE AREA FROM THE CENTRAL AND
NORTHERN ROCKIES TO PORTIONS OF THE UPPER MIDWEST AND UPPER GREAT
LAKES. A VAST AREA SPANNING FROM MONTANA/WYOMING TO WISCONSIN HAVE
A PLETHORA OF HAZARDS IN PLACE, INCLUDING: BLIZZARD WARNINGS,
WINTER STORM WARNINGS, WINTER WEATHER ADVISORIES, BLIZZARD WATCHES
AND WINTER STORM WATCHES.

SOUTH OF THE SNOW AREA, RAIN AND THUNDERSTORMS ARE EXPECTED TODAY
AND FRIDAY FROM PORTIONS OF THE MID AND UPPER-MISSISSIPPI VALLEY
TO THE SOUTHERN GREAT LAKES AND OHIO VALLEY. SOME STORMS COULD BE
SEVERE ON FRIDAY ACROSS PORTIONS OF THE OHIO VALLEY AND SOUTHERN
GREAT LAKES. PLEASE REFER TO PRODUCTS ISSUED BY THE STORM
PREDICTION CENTER FOR FURTHER DETAILS ON THE SEVERE WEATHER THREAT.


CAMPBELL/RYAN


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





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