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| | Tornado Disaster -- Texas, May 1997 |
 | | The first tornado, a slow-moving multivortex F-5 (Fujita Tornado Intensity Scale) (Table 2), swept a path 7.6 miles long and approximately 1320 yards wide through a residential subdivision of Jarrell, a predominantly rural town in Williamson County, destroying 30 permanent homes, eight mobile homes, and three businesses (Table 1). |
 | | NWS tornado watches and warnings are the primary method of alerting communities of an approaching tornado and are disseminated through public safety organizations, sirens, television, radio, or other electronic media (6). |
 | | A tornado watch is issued when weather conditions indicate that a tornado may develop; a tornado warning is issued when a tornado has been sighted or detected by advanced weather technology (6). |
| wonder.cdc.gov /wonder/prevguid/m0049839/m0049839.asp (1394 words) |
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