Looking ahead to next week weather models for the last number of days have been indicating a strong blocking pattern developing across the North Atlantic. This has implications longer term for the first part of May. A blocking signature anytime of year can mean a cold wet stormy period of weather and the middle of spring is no exception to this. With all the weather models going the blocking route it is a call to pay attention.
These maps are for one week from today and both weather models (GFS & EUROPEAN) are virtually identical. The big high builds over Greenland and forces a strong Atlantic jet stream along and north of 40 degrees north. To the west a deep trough dives southward into the Mississippi Valley while a strong ridge cuts off the Pacific jet stream and builds into Northwest Canada...READ MORE AT http://www.meteorologistjoecioffi.com/index.php/2017/04/27/weather-models-showing-blocking-next-week/