An approaching upper level disturbance, sufficient instability
and moderate wind shear combined to produce a few severe thunderstorms
across the Rolling Plains Saturday evening. Although moisture
was rather sparse, a few of these storms still were able to
produce some rather sizeable hail. In fact, both White River
Lake and Lake Alan Henry saw some large hail during the evening.

Another view of the hail that fell in White River Lake on 26
April 2008. Click on the image for a larger view. Image courtesy
of Tim Walker.
The
showers and thunderstorms initially developed across the Texas
Panhandle during the mid-afternoon hours. A few of the storms
intensified further during the late afternoon and evening hours
as they moved and developed southward into some slightly improved
moisture. The strongest of the storms tracked across White River
Lake around 7 pm, and produced hail up to the size of golf balls.
This same storm moved east-southeast, eventually bringing penny
size hail to Jayton around 8 pm.

A third view of the hail that fell in White River Lake on 26
April 2008. Click on the image for a larger view. Image courtesy
of Tim Walker.
Later
that same evening, another storm quickly developed and intensified
just southeast of Post. This storm quickly began producing hail,
with half-dollar size hail observed at Lake Alan Henry shortly
before 9 pm. The severe storms moved south and east of the area
by late evening, but a powerful cold front quickly invaded from
the north. The front brought some much cooler air into the region
on stout northerly winds sustained at 25 to 35 mph, with some
gusts clocked over 50 mph.