02451oam 2200505Ia 450 991069771460332120090211111922.0(CKB)5470000002391830(OCoLC)54475950(EXLCZ)99547000000239183020040224d2000 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrier1998-1999 tornadoes and a long-term U.S. tornado climatology[electronic resource] /Neal Lott, Sam McCown, Tom RossAsheville, NC :U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite Data and Information Service, National Climatic Data Center,[2000]23 pages digital, PDF fileNational Climatic Data Center technical report ;99-02Title from title screen (viewed on Nov. 19, 2008)."November 1999; updated August 2000."Provides long-term climatological summaries and maps for tornadoes in the United States, with specific information concerning tornadoes during 1998-1999. The years 1998 and 1999 were quite active for tornadoes in the U.S., with well-above average numbers of fatalities. The winter-spring of 1998 was dominated by El Nino conditions, while the winter-spring of 1999 was dominated by La Nina, thus showing that active tornado seasons may occur in either situation. These 2 years produced a total of 3 tornadoes of F5 intensity and 11 tornadoes of F4 intensity, for a total of 14 in the violent F4-F5 category.Tornadoes and a long-term U.S. tornado climatologyLong-term U.S. tornado climatologyTornadoesUnited StatesStatisticsTornadoesUnited StatesMeasurementSevere stormsUnited StatesGovernment publications.lcgftStatistics.lcgftTornadoesTornadoesMeasurement.Severe stormsLott Neal1407480McCown Sam1412932Ross Tom1407483National Climatic Data Center (U.S.)UUSUUSOCLCQGPOBOOK99106977146033211998-1999 tornadoes and a long-term U.S. tornado climatology3508094UNINA