Shortly before 8 p.m. EDT on April 15, 1999, a severe thunderstorm crossed from South Carolina into North Carolina. It produced a killer tornado near Pembroke, North Carolina about 8:15 p.m. EDT. The storm continued to grow, producing two more tornadoes that injured several people.
As the storm raced eastward along a warm front, it began to develop interesting characteristics. Weather radar operators watched in amazement as the storm began to develop what looked like feeder bands. Storms developed along the forward flank and the rear flank downdraft. A Bounded Weak Echo Region developed near the center of the storm. This is a frequent signature of severe storms. It is an area of lower reflectivity in the low levels of the atmosphere associated with the updraft. This BWER was so well developed that it appeared that the storm had an eye.
The storm actually looked like a hurricane on radar, complete with eye and feeder bands. Meanwhile, it was producing a long track tornado. This F2 tornado carved a thirty mile path that was up to one mile wide at times. Eleven people were injured.
As the supercell thunderstorm continued moving east northeast, it produced a 165 mph wind gust near Trenton, North Carolina around 10:20 p.m. EDT. The gust may have been produced by a direct hit on the anemometer by a tornado. The storm would “bow out” into a bow echo, producing wind damage all the way across North Carolina until it moved into the Atlantic.
As the storm raced eastward along a warm front, it began to develop interesting characteristics. Weather radar operators watched in amazement as the storm began to develop what looked like feeder bands. Storms developed along the forward flank and the rear flank downdraft. A Bounded Weak Echo Region developed near the center of the storm. This is a frequent signature of severe storms. It is an area of lower reflectivity in the low levels of the atmosphere associated with the updraft. This BWER was so well developed that it appeared that the storm had an eye.
The storm actually looked like a hurricane on radar, complete with eye and feeder bands. Meanwhile, it was producing a long track tornado. This F2 tornado carved a thirty mile path that was up to one mile wide at times. Eleven people were injured.
As the supercell thunderstorm continued moving east northeast, it produced a 165 mph wind gust near Trenton, North Carolina around 10:20 p.m. EDT. The gust may have been produced by a direct hit on the anemometer by a tornado. The storm would “bow out” into a bow echo, producing wind damage all the way across North Carolina until it moved into the Atlantic.
on April 14, 2006, 10:15 pm
http://www.spc.noaa.gov/coolimg/nc_storm/index.html
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