Prognostic Meteorological Discussion
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000
FXUS01 KWBC 260645
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
244 AM EDT FRI MAY 26 2017

VALID 12Z FRI MAY 26 2017 - 12Z SUN MAY 28 2017

...SEVERE THUNDERSTORMS AND LOCALLY HEAVY RAIN POSSIBLE FROM
PORTIONS OF THE PLAINS TO THE MID-ATLANTIC THROUGH SATURDAY...

...WARMING TEMPERATURES EXPECTED FOR THE PACIFIC NORTHWEST THROUGH
THE WEEKEND...

A LOW PRESSURE SYSTEM MOVING ALONG THE NORTHEAST U.S. COASTLINE
WILL KEEP MUCH OF NEW ENGLAND IN RAIN TODAY. AS THE LOW PRESSURE
AREA BEGINS TO MOVE EAST OF THE REGION THIS EVENING, RAIN WILL
BEGIN TO TAPER OFF. FARTHER WEST, A FRONTAL BOUNDARY EXTENDING
FROM THE CENTRAL AND SOUTHERN PLAINS TO THE CENTRAL ROCKIES TODAY
WILL RESULT IN AREAS OF SCATTERED TO NUMEROUS SHOWERS AND
THUNDERSTORMS. THE SYSTEM WILL PRODUCE ACCUMULATING SNOW AT THE
HIGHER ELEVATIONS OF WYOMING TODAY AND TONIGHT. MEANWHILE, SEVERE
THUNDERSTORMS AND HEAVY RAIN ARE POSSIBLE TODAY ACROSS PORTIONS OF
THE CENTRAL AND SOUTHERN HIGH PLAINS. PLEASE REFER TO PRODUCTS
ISSUED BY THE STORM PREDICTION CENTER FOR FURTHER DETAILS ON THE
SEVERE WEATHER THREAT. ON SATURDAY, ONE WAVE OF LOW PRESSURE ALONG
THE FRONT WILL MOVE INTO THE THE OHIO VALLEY AND THE MID-ATLANTIC,
BRINGING SCATTERED SHOWERS AND THUNDERSTORMS TO THOSE AREAS.
FARTHER WEST, AN UPPER-LEVEL DISTURBANCE MOVING FROM THE ROCKIES
INTO THE PLAINS WILL INTERACT WITH THE FRONT TO PRODUCE WIDESPREAD
SHOWERS AND THUNDERSTORMS ON SATURDAY FROM THE CENTRAL AND
SOUTHERN PLAINS TO THE MID-MISSISSIPPI VALLEY. THIS SECOND ROUND
OF STORMS WILL MOVE INTO THE OHIO VALLEY AND THE APPALACHIANS
SATURDAY NIGHT INTO EARLY SUNDAY MORNING. SEVERE THUNDERSTORMS AND
HEAVY RAIN WILL ONCE AGAIN BE POSSIBLE SATURDAY AND SATURDAY NIGHT.

HIGH PRESSURE WILL EXPAND ACROSS THE WESTERN U.S. INTO THE
WEEKEND. THIS WILL KEEP THE WEST COAST DRY, WITH WARMING
TEMPERATURES EXPECTED. THE WARMEST CONDITIONS ARE EXPECTED ACROSS
THE INTERIOR NORTHWEST, WHERE TEMPERATURES ARE FORECAST TO RISE
INTO THE 80S TODAY, PERHAPS APPROACHING 90 ON SATURDAY, 10 TO 20
DEGREES ABOVE AVERAGE.

RYAN


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

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