May 22, 2013
THE PREVIOUSLY DISCUSSED STORM SYSTEM ABOVE WILL ALSO BE SIGNIFICANT AS A PATTERN CHANGER...AS THE ASSOCIATED UPPER LOW WILL BE THE 1ST IN A SERIES OF SHORTWAVES THAT HELP CARVE AND MAINTAIN THE MEAN UPPER TROF OVER THE EASTERN U.S. FOR MUCH OF THE UPCOMING PERIOD. THIS TROF WILL OPEN THE DOOR FOR A COUPLE OF SHOTS OF SLIGHTLY MODIFIED ARCTIC AIR TO HEAD OUR WAY...WHICH WILL LIKELY RESULT IN AT LEAST 2 MORNINGS OF SUB FREEZING TEMPS ACROSS MUCH OF THE INTERIOR. WHETHER WE APPROACH HARD FREEZE LEVELS OR NOT REMAINS TO BE DETERMINED...BUT BASED ON THE 00 UTC GFS AND 12 UTC ECMWF...THE COLDEST MORNINGS WOULD BE SAT AND MON. DAYTIME HIGHS SHOULD BE QUITE A BIT BELOW CLIMO AS WELL... BUT THE WARMING FEB INSOLATION SHOULD AT LEAST ALLOW TEMPS TO CLIMB INTO THE MID 50S TO LOWER 60S IN THE AFTERNOON.
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