Storm Australian Severe Weather Forum
Severe Weather Discussion => Tornado Alley Outbreaks and Severe Weather Worldwide => Topic started by: Guest on 06 October 2010, 01:00:25 AM
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Looking back: October 4th, 1998 Oklahoma tornado outbreak
(http://www.tornadovideos.net/images/stories/2010/october/19981004map.gif)(http://www.tornadovideos.net/images/stories/2010/october/10.04.98.radar.png)(http://www.tornadovideos.net/images/stories/2010/october/98.10.04.500mb.png)(http://www.tornadovideos.net/images/stories/2010/october/98.10.04.sfc-500.png)While a large portion of the Plains are experiencing cooler and mild Fall-like weather today, it is worth taking a look back 12 years to the day which saw the largest tornado outbreak on record for the state of Oklahoma. A robust, Spring-like upper-level trough entered the southern Plains during the mid-afternoon, while a potent surface low strengthened over the Colorado-Nebraska border. This combination translated into an environment favorable for the development of tornadic supercells in the southern Plains, with strong wind shear and an unstable airmass centered over Oklahoma. Multiple supercell thunderstorms traversed the state during the afternoon and into the evening, causing extensive damage to cities like Moore, Shawnee and Pawnee. The NWS Norman (http://www.srh.noaa.gov/oun/?n=events-19981004) has a good write-up on the event, for further reference.
http://www.tornadovideos.net/component/content/article/36-tornadoes/1287-looking-back-october-4th-1998-oklahoma-tornado-outbreak (http://www.tornadovideos.net/component/content/article/36-tornadoes/1287-looking-back-october-4th-1998-oklahoma-tornado-outbreak)