Sunday evening the 15th, an intense thunderstorm moved out of
the southeast Texas Panhandle and across Childress county, bringing
a wide swatch of damage from strong winds and wind-driven hail.
The storm also
was responsible for six minor injuries.
The thunderstorm formed in an environment with strong wind shear
and instability. This caused the storm to develop into a supercell,
meaning that it showed deep and persistent storm-scale rotation
(on the order of 2-10 miles in diameter) above cloud
base. The image below is an accumulated precipitation image from
the Lubbock radar and is useful to show the path of the thunderstorm.
The actual precipitation values are overestimated in the core
of the storm due to the presence of hail.
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| A 24-hour
accumulated precipitation image estimated from the Lubbock
radar (located just below the image below the town of Abernathy)
showing the track of the storm across the region. |
The
storm moved across Childress County from approximately 7:30 pm
to 9:15 pm - bringing severe weather to the city of Childress
from about 8:30 pm to 9:00 pm. The following two images show the
storm as it appeared on radar over Childress. The first image
is the vantage point of the radar at Lubbock and the second one
is from Frederick, Oklahoma (the radar at Amarillo also showed
a similar perspective). Both images show the core of very strong
reflectivity values over Childress indicative of large hail. The
second image also shows a large hail signature commonly called
a "hail spike" on the west side of the storm (extending
into Hall County).
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| National Weather Service
Doppler Radar images of the Childress thunderstorm. The one
on the left is from Lubbock and the one on the right is from
Frederick, OK. Both images are from 0133 UTC or 833 pm CDT.
The radar beam height over Childress from the Lubbock radar
is about 11,000 feet and from the Frederick radar it is about
5,000 feet. Please click on the images to view larger versions.
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On
Monday the 16th, a team from the National Weather Service Office
in Lubbock and Texas Tech University went
to Childress to conduct a damage survey. They found that a large
number of homes and other structures suffered extensive wind and
hail damage - almost all the homes in Childress had their east-facing
windows destroyed by hail. The hail was not exceptionally large,
ranging from around quarter to ping-pong ball size. But the strong
winds in excess of 80 mph caused the hail to be extremely destructive.
Below are a few photographs taken during the damage survey. Please
click on each image to view a larger version.
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This
home experienced extensive carport and roof damage. For
a larger view click on the image. |
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This
home suffered some of the worst damage found by the survey
team. It lost almost its entire roof and then most of the
possessions inside were ruined by rain/wind/hail. For a
larger view click on the image. |
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This
home in southeast Childress had it's vinyl siding shredded
by wind-driven hail. For a larger view click on the image. |
After
reviewing the damage survey photographs, radar data, and other
information, the survey team determined that the damage was not
caused by a tornado, but rather a combination of the strong straight-line
winds (in the 75 to 95 mph range) and the large hail driven by
the wind. Please click HERE to view the
Public Information Statement (PNS) released by the National Weather
Service Office in Lubbock. Below are some additional pictures
taken of the storm near Childress just before sunset.
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| Above are
pictures taken of the storm that impacted Childress on the
evening of 15 June 2006. The pictures were taken from about
6 miles south of Childress look north-northwest. The images
depict areas of heavy rain and hail below the storm cloud
base (on the right side), with strong outflow winds (dust)
seen near ground level.The strong winds/dust appear to be
emanating from the location where the rain and hail reach
the ground, as is typical for a wet macroburst/downburst.
The pictures are courtesy of Russell Graves. Click on the
images for a larger view. |
More
information can be found for this event at the Texas Tech Mesonet
web site. Follow this LINK.
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