EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1126 AM EDT FRI MAY 24 2013

VALID 12Z MON MAY 27 2013 - 12Z FRI MAY 31 2013


AN ACTIVE PATTERN IS IN STORE FOR THE UNITED STATES DURING THE
LAST WEEK OF MAY, WITH A SUPPRESSED POLAR JET BRINGING RAIN AND
TEMPERATURE SWINGS TO MUCH OF THE NATION. RELIED ON THE EUROPEAN
CENTRE GUIDANCE FOR THIS FORECAST, WHICH WAS BETTER MATCHED WITH
THE OTHER GLOBAL MODELS THAN THE GFS AND GEFS MEAN. EXPECT
SIGNIFICANT RAINFALL ALONG THE POLAR FRONT FROM THE NORTHERN
PLAINS TO THE NORTHEAST. THE POWERFUL JET DIVING INTO THE
SOUTHWEST IS EXPECTED TO BRING RAIN TO THAT REGION, WITH
MOUNTAINTOP SNOWS. ONCE THE ENERGY BLASTS ONTO THE SOUTHERN PLAINS
DAYS 5 AND 6, EXPECT STRONG, SOAKING THUNDERSTORMS TO ERUPT.


CISCO