Wrap up of the 2014-15 Winter
(04/03/2015 − 04/10/2015)
STRAT_K has delivered the fourth peak on April 7, as the remains of the exiled polar vortex disperse, responsible for clustering precipitation events over a large area of the two continents. These smaller-scale cold air surges will continue into this next few weeks and transfer into the next upcoming STRAT_L event. This will be the final event for this winter, and will continue to also have smaller aftermath peaks as the polar vortex disintegrates.
The last stratospheric event of the winter 2014-15, STRAT_L, is still expected to occur between April 16-22, as we have been forecasting since March 20. This event is expected to bring another round of precipitation and below-normal temperature events over a large portion of both continents.
Forecasts Made on April 10, 2015
Follow up on Forecast Made in Previous Weeks:
· After the three rounds of delivering cold Arctic cold air into mid-latitudes, STRAT_K is still capable of exporting gushes of cold air out of the polar region as the remains of the exiled polar vortex disperse into mid-latitudes in the next a few days.
· STRAT_L appears to be the last strong stratospheric circulation event for the 2014-15 winter. This final event will not allow the polar stratospheric vortex to return to Arctic till the fall of 2015.
New Forecasts Made on April 10, 2015
· No new events are forecasted in this week's forecast.