Strong Storms & Heavy Rain Likely Friday… NAO Tanks… More Like March than May!

A strong upper-level low pressure system will deepen over the Mid-South on Thursday night while a strong cold front approaches the Appalachians Friday morning.  Heavy rain, with embedded strong thunderstorms are likely pre-dawn Friday through the early afternoon hours.


We will have to monitor a strong squall line with the potential for damaging wind gusts along the cold front on Friday. 

From June to March:


The North Atlantic Oscillation will be sliding into its negative phase (see red lines in chart above) over the next several days indicative of strong upper-level blocking (ridge of high pressure) across the north Atlantic ocean.

Result:  This will allow for a highly amplified jet stream with unseasonably chilly air to infiltrate the eastern third of the nation.  It will certainly feel more like late March than early May across the Mid-Atlantic, the Great Lakes & New England this weekend through the following work week!


Temperature Anomalies:

Highs may struggle to reach 60 degrees with lows in the 40s across the Washington Region this weekend continuing through much of next week!


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