![]() ![]() Meanwhile, across the north, the Arctic front barreled east across the upper midwest and into the western great lakes.Īs this process unfolded overnight on the 25th, the surface low deepened explosively over Alabama and Georgia as the subtropical and arctic jet stream began to phase with a jet streak of 150 knots noted and of which contributed to the tremendous intensification of the surface low as it " bombed" northward into west Virginia. These two jet steaks initially split by a huge upper level ridge of high pressure along the west coast combined on the 25th with low pressure deepening as it moved from east Texas into Georgia by evening ( surface | 500mb). Concurrently, a strong upper level sub tropical jet streak was present across Arizona. It all began as the tremendous Arctic stream jet streak surged nearly due south while the associated Arctic cold front blasted through the northern plains late on the 24th. ![]() The phasing of these two systems was the key to the subsequent intensification and extent of this great storm. At the same time, another low pressure system in association with a disturbance embedded with the sub tropical jet stream across the southern United States was taking shape over eastern Texas. A strong low pressure system and arctic airmass was dropping southward out of Canada into the northern plains on the 24th. The massive storm began as two small but distinct storms. We will take a look back in time and look at how this Great Blizzard developed and share some memories from longtime residents of the area. One of the most powerful winter storms on record paralyzed the central and eastern United States in late January 1978.
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