Prognostic Meteorological Discussion
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FXUS01 KWBC 060711
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
311 AM EDT FRI MAY 6 2016

VALID 12Z FRI MAY 6 2016 - 12Z SUN MAY 8 2016

...CLOSED UPPER LEVEL LOWS NEAR BOTH COASTS AND A HIGH PRESSURE
RIDGE OVER THE CENTRAL U.S. WILL GOVERN THE OVERALL WEATHER
PATTERN...

AN OMEGA BLOCK PATTERN ALOFT HAS BECOME ESTABLISHED OVER THE
CONTINENTAL U.S. AND THIS WILL BE RATHER SLOW TO CHANGE OVER THE
NEXT FEW DAYS.  WELL DEFINED UPPER LEVEL LOWS ARE EVIDENT OVER
SOUTHERN CALIFORNIA AND NEAR THE MID-ATLANTIC COAST AT THE
BEGINNING OF THE FORECAST PERIOD, AND A LARGE UPPER LEVEL RIDGE
OVER THE PLAINS.  BY SUNDAY MORNING, THE PATTERN SHOULD NOT BE
QUITE AS AMPLIFIED WITH LESS RIDGING OVER THE CENTRAL U.S.
HOWEVER, THERE WILL STILL BE AN UPPER LEVEL LOW OVER THE WESTERN
U.S. AND A TROUGH NEAR THE EAST COAST.

IN TERMS OF SENSIBLE WEATHER, TEMPERATURES ARE EXPECTED TO BE
UNSEASONABLY COOL FROM THE MID-ATLANTIC TO THE NORTHEAST WITH
MOSTLY CLOUDY SKIES AND PERIODS OF RAIN FROM AN OCEANIC LOW
NEARBY.  THE SAME ALSO HOLDS TRUE ACROSS MUCH OF THE WEST COAST
REGION WITH BELOW NORMAL TEMPERATURES LIKELY TO CONTINUE THROUGH
THE END OF THE WEEK, ALONG WITH NUMEROUS SHOWERS AND HIGH
ELEVATION SNOW.  THE PLACE WITH WARM AND MOSTLY SUNNY CONDITIONS
WILL BE THE CENTRAL AND NORTHERN PLAINS, WITH WIDESPREAD HIGHS IN
THE 70S AND 80S EXPECTED.  A COLD FRONT SAGGING SOUTHWARD WILL
BRING TEMPERATURES CLOSER TO NORMAL ACROSS THE DAKOTAS AND THE
UPPER MIDWEST BY THIS WEEKEND.

D. HAMRICK

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





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