Blocking sends disturbance south from Greenland

High latitude blocking, which we discussed earlier this week as an important predictor in summer temperature patterns around our area, is at it again. A large and anomalous blocking ridge, building north from Canada towards the higher latitudes into Newfoundland and Southeastern Greenland, is forcing a disturbance and upper level low to shift southward. The disturbance will track southward today — and can be seen on water vapor and visible satellite imagery early this afternoon. The feature won’t directly impact our area, nor will it cause any widespread unsettled weather on the east coast, but it could reinforce east/southeasterly winds as it passes later this week.

The track of the disturbance is the most unusual. To see an upper level low or disturbance track southward from Greenland all the way to a point just a few hundred miles off of the US East Coast is exceedingly rare. However, one glance at the blocking pattern aloft tells you the story — the disturbance had nowhere else to go, being forced into a small window between the trough over the Atlantic and the blocking ridge to the west over Canada. (Click read more for more imagery).

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NASA imagery captures massive CME

As benign and inactive as the weather pattern has been the last several days in the NYC Area, the sun has been conjuring up some major developments. And it’s acting up again. On Monday a corona mass ejection, otherwise known as a CME, occurred on the edge of the sun. CME’ s are common during the suns more active periods — one of which we are heading into. The more active solar cycle has been underwhelming thus far, but NASA was able to capture Monday’s CME with an incredible high resolution video. Attached below, the video shows the CME erupting off the sun in a rolling wave — shooting billions of tons of particles into space at millions of miles per hour.

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