High Risk of severe storms with several long-lived, destructive tornadoes likely (24.06z NAM model shown)
* *  Mike Umscheid PHOTOGRAPHY & STORM CHASE BLOG   * *

Tue, 24 May 2011 07:03:14 -0500
High Risk of severe storms with several long-lived, destructive tornadoes likely (24.06z NAM model shown)
The dawn hours have arrived -- of what, on paper, looks to be one of
the most explosive Great Plains severe weather outbreak in quite some
time -- in terms of the potential for multiple, long-lived,
destructive tornadoes. I will be storm chasing today, on my one true
day off work between ending evening shifts and beginning midnight
shifts late Wednesday Night. I will be hanging around Dodge City
until around 2:00 to 2:30pm or so, which at that time, the surface
focus for storm initiation will actually not be too far from here.
The initial surface-based storms will probably form in an area from
Kinsley to Greensburg to Pratt after 3:00pm and continue developing in
an explosive manner through the afternoon. A surge of warm air will
develop northward from western Oklahoma into portions of far
southwest/south-central KS greeting a cooler, much higher relative
humidity airmass along either the Highway 50 or 54 corridor. This is
where the initial triple point will be... and a focus for this initial
development. By late afternoon/early evening, say after 5pm,
additional storms will develop in perhaps an even more explosive
manner farther south... along the OK-KS border and points south all
along the dryline in central Oklahoma. The 06z NAM model depicts
supercell thunderstorm development as far south as the Dallas-Ft.
Worth metroplex by 6 or 7pm. The low level wind shear in combination
with 3500 to 4500 J/kg Surface-based CAPE will yield support the
development of very aggressive supercell thunderstorms all the way
from south-central Kansas south to North Texas. All storm chasers
should be very careful, especially considering the number of storm
chasers that will likely be out. Storm chasers will be out in huge
numbers today. I will likely observe storms/storm structure from a
safer distance (which is what I usually do anyway), as many other
storm chasers will likely be up close and personal to large tornadoes.
A final chase strategy will be decided by midday.


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