000			02142nab a2200253 4500
003			OSt
005			20220803153746.0
007			cr aa aaaaa
008			220803b |||||||| |||| 00| 0 eng d
100			_aMoore, Todd W _950850
245			_aA review and analysis of possible changes to the climatology of tornadoes in the United States/
260			_bSage, _c2019.
300			_aVol 43, issue 3,2019 : (365-390 p.).
520			_aThis review and analysis illustrates that the spatial distribution and temporal clustering of tornadoes in the United States are changing. Tornado activity is increasing throughout the Southeast and in the southern portion of the Midwest and is decreasing throughout the southern and northwestern portions of the Great Plains and in the northern Midwest. This eastward shift is seen in tornado density maps, regional and gridded trends, and in an eastward shift of the mean center of tornadoes at the annual scale and in summer. The mean centers of tornado activity in other seasons are rather insensitive to these changes. Tornadoes are also clustering on fewer days in the year, and days with few tornadoes are becoming less common whereas days with many tornadoes are becoming more common. These concurrent and opposing trends are subsequently altering the frequency distribution of tornado days. The seasonality of these big tornado days also appears to be changing, as their increase in frequency is greatest in the fall and winter. Lastly, the increasing frequency of these big tornado days, which are most common in the Southeast and southern Midwest, contributes to the documented eastward shift in tornado activity.
650			_aTornado climatology, _950851
650			_aspatial distribution of tornadoes, _950852
650			_atornado days, _950853
650			_aclimate change and variability, _950854
650			_aUnited States _950855
700			_aDeBoer, Tiffany A _950856
773	0		_012665 _916502 _dLondon: Sage Publication Ltd, 2019. _tProgress in Physical Geography: Earth and Environment/ _x03091333
856			_uhttps://doi.org/10.1177/0309133319829398
942			_2ddc _cART
999			_c12690 _d12690