A
panhandle hook (also called a
pan handle hook or
Texas hooker) is a relatively infrequent winter storm system whose
cyclogenesis occurs in the South to southwestern United States from the late
autumn through
winter and into the early spring months. They trek to the northeast on a path towards the Great Lakes region, as the southwesterly
are most prevalent, usually affecting the Midwestern United States and Eastern
Canada. Panhandle hooks account for some of the most memorable and deadly
and
in
North America.
The name is derived from the region of surface
cyclogenesis in the
Texas panhandle and Oklahoma panhandle regions. In some winters, there are no panhandle hook storms; in others, there are several.
Formation
A panhandle hook storm has its origins as a strong shortwave low pressure system which traverses the base of a
long-wave low pressure trough while geographically coincident with the southwestern United States. Such systems ubiquitously develop a surface low-pressure system in the northwestern Texas and western Oklahoma area (as an eddy effect interaction of the
topography of the
Rocky Mountains in relation to the jet stream) with associated
warm front and
cold front, with attending snow to the northwest of the low and severe
to the southeast -- the "hook" refers to the left-ward east to northeast jog in the track of the surface low as it is plotted on a weather analysis chart.
If the associated jet stream is stronger than normal and there is colder than normal air in place in central Canada to provide a greater than normal temperature contrast with Gulf of Mexico moisture drawn northward by the developing panhandle low, surface cyclogenesis can be particularly energetic and cause a great swath of heavy snow to develop and blanket a large portion of the American Great Plains and upper-midwestern states in conjunction with very strong winds, the combination of which exceeds blizzard criteria. Over the Great Lakes, the interaction of these storms with the lakes can amplify windspeeds causing extreme heavy sometimes localized snowfall, thundersnow and often shoreline erosion. Initially pleasant weather ahead of the northeast-bound storm can lull the unwary into dressing lightly and then being surprised by heavy snow accompanied by howling easterly and northerly winds as the low traverses south to east of their location.
Historic panhandle hooks
Famous storms that were panhandle hooks are the Armistice Day Blizzard of November 11, 1940, and the storm which sank the
Edmund Fitzgerald on November 10, 1975.
See also
External links
