Original vs. Revised HURDAT

Atlantic basin
Comparison of Original and Revised HURDAT

Year Original
Named
Storms
Revised
Named
Storms
Original
Hurricanes
Revised
Hurricanes
Original
Major
Hurricanes
Revised
Major
Hurricanes
Original
ACE
Revised
ACE
Original
U.S.
Hurricanes
Revised
U.S.
Hurricanes
1851" "6" "3" "1" "36" "2 (1,3)
1852" "5" "5" "1" "73" "4 (1,3,1,2)
1853" "8" "4" "2" "76" "1 (1)
1854" "5" "3" "1" "31" "3 (1,3,2)
1855" "5" "4" "1" "18" "1 (3)
1856" "6" "4" "2" "49" "2 (4,2)
1857" "4" "3" "0" "40" "1 (2)
1858" "6" "6" "0" "45" "1 (1)
1859" "8" "7" "1" "56" "2 (1,1)
1860" "7" "6" "1" "62" "3 (3,2,2)
1861" "8" "6" "0" "50" "3 (1,1,1)
1862" "6" "3" "0" "46" "0
1863" "9" "5" "0" "50" "0
1864" "5" "3" "0" "27" "0
1865" "7" "3" "0" "49" "2 (2,2)
1866" "7" "7" "2" "84" "1 (2)
1867" "9" "7" "1" "60" "2 (1,2)
1868" "4" "3" "0" "35" "0
1869" "10" "7" "1" "51" "4 (2,1,3,2)
1870" "11" "10" "2" "88" "3 (1,1,1)
187168" "6" "2" "88" "3 (3,2,1)
187255" "4" "0" "65" "0
187355" "3" "2" "69" "2 (1,3)
187477" "4" "0" "47" "1 (1)
187546" "5" "1" "72" "1 (3)
187635" "4" "2" "57" "2 (1,2)
187788" "3" "1" "73" "2 (1,3)
18781012" "10" "2" "181" "2 (2,2)
187988" "6" "2" "64" "3 (3,2,3)
1880911" "9" "2" "131" "4 (3,2,1,1)
188167" "4" "0" "59" "2 (2,2)
188234" "5" "2" "59" "2 (3,1)
188344" "3" "2" "67" "1 (2)
188434" "4" "1" "72" "0
188588" "6" "0" "58" "1 (2)
1886101281004135166" "7 (2,2,2,1,4,1,3)
18871719101122199181" "4 (1,1,1,1)
18889956029385" "3 (1,3,2)
1889995600127104" "1 (1)
18901412012433" "0
189111108701165116" "2 (1,1)
1892994500121116" "0
18931212101035267231" "5 (1,3,2,4,3)
1894675524133135" "2 (2,3)
18956622108569" "1 (1)
1896676622164136" "3 (2,1,3)
18975623005255" "1 (1)
18989114501114113" "3 (1,1,4)
189961055321301512 (3,3)3 (2,3,2)
190077332281831 (4)1 (4)
19011013361099992 (1,2)2 (1,1)
1902553300373300
190391087111171022 (2,1)2 (1,1)
190456240030301 (1)2 (1,1)
1905551101252800
1906111166431701634 (1,3,3,2)4 (1,1,2,3)
1907450000111300
1908810561180951 (1)1 (1)
190910124644111934 (3,2,4,3)5 (2,3,1,3,3)
191045333178642 (2,3)2 (2,2)
191146330036352 (1,2)2 (1,2)
191267441174572 (1,1)2 (1,2)
191346340043362 (1,1)3 (1,1,1)
19141100003300
19155645331181303 (4,1,4)4 (1,4,1,3)
191614151110651771446 (3,1,1,3,2,1)4 (3,2,4,2)
191734222252611 (3)1 (3)
191856340129401 (3)2 (3,1)
191935121148551 (4)1 (4)
192045440031302 (2,1)1 (2)
192167452275872 (2,3)2 (1,3)
1922452311585500
192379341154491 (1)1 (1)
19248115522891002 (1,1)3 (1,1,1)
1925241110771 (1)0
1926111188662222303 (2,3,4)4 (2,3,4,1)
1927784421565600
192866441175832 (2,4)2 (2,4)
192935331143482 (1,3)2 (1,3)
1930232212395000
19319132311394800
1932111566441361702 (4,1)2 (4,1)
193321201011562132595 (2,2,3,3,3)5 (1,1,3,3,2)
19341113670160482 (3,2)3 (2,1,1)
1935685533951062 (5,2)2 (5,2)
1936161777111081003 (1,3,2)3 (1,2,1)
19379113401616600
193889341273782 (1,3)2 (1,3)
193956331134341 (1)1 (1)
194089460052682 (2,2)2 (2,2)
194166442261612 (3,2)2 (3,2)
19421010441166662 (1,3)2 (1,3)
19431010552294941 (2)1 (2)
19441111773396963 (1,3,3)3 (1,3,3)
19451111553367673 (1,2,3)3 (1,2,3)
194666331122221 (1)1 (1)
19479955221121123 (1,4,2)3 (1,4,2)
19489966441061063 (1,3,2)3 (1,3,2)
19491313773398983 (1,3,2)3 (1,3,2)
195013131111882432433 (1,3,3)3 (1,3,3)
19511010885513713700
195277663387871 (1)1 (1)
1953141466441041043 (1,1,1)3 (1,1,1)
1954111188221131133 (3,3,4)3 (3,3,4)
1955121299661991993 (3,1,3)3 (3,1,3)
195688442254541 (2)1 (2)
195788332284841 (4)1 (4)
19581010775512112101 (3)
19591111772277773 (1,1,3)3 (1,1,3)
196077442288882 (4,1)2 (4,1)
1961111188772052051 (4)1 (4)
1962553311363600
19639977221181181 (1)1 (1)
1964121266661701704 (2,2,3,2)4 (2,2,3,2)
196566441184841 (3)1 (3)
1966111177331451452 (2,1)2 (2,1)
19678866111221221 (3)1 (3)
196888440045451 (2)1 (2)
196918181212551661662 (5,1)2 (5,1)
19701010552240401 (3)1 (3)
19711313661197973 (2,1,1)3 (2,1,1)
197277330036361 (1)1 (1)
1973884411484800
19741111442268681 (3)1 (3)
197599663376761 (3)1 (3)
19761010662284841 (1)1 (1)
197766551125251 (1)1 (1)
197812125522636300
197999552293933 (1,2,3)3 (1,2,3)
1980111199221491491 (3)1 (3)
19811212773310010000
1982662211323200
198344331117171 (3)1 (3)
19841313551184841 (3)1 (3)
19851111773388886 (1,1,3,3,1,2)6 (1,1,3,3,1,2)
198666440036362 (1,1)2 (1,1)
198777331134341 (1)1 (1)
1988121255331031031 (1)1 (1)
1989111177221351353 (1,4,1)3 (1,4,1)
199014148811979700
199188442236361 (2)1 (2)
199277441173761 (4)1 (5)
199388441139391 (3)1 (3)
1994773300323200
199519191111552282282 (2,3)2 (2,3)
1996131399661661662 (2,3)2 (2,3)
199788331141411 (1)1 (1)
199814141010331821823 (2,1,2)3 (2,1,2)
1999121288551771773 (3,2,1)3 (3,2,1)
20001515883311911900
20011515994411011000
20021212442267671 (1)1 (1)
2003161677331761762 (1,2)2 (1,2)
2004151599662272276 (1,4,1,2,3,3)6 (1,4,1,2,3,3)
200528281515772502506 (1,3,3,1,3,3)6 (1,3,3,1,3,3)
200610105522797900
20071515662274741 (1)1 (1)
2008161688551461463 (1,2,2)3 (1,2,2)
2009993322535300
2010191912125516516500
2011191977441261262 (1)2 (1)

" " = Not available in original HURDAT
Named Storms = Tropical Storms, Hurricanes and Subtropical Storms
Hurricanes = Saffir-Simpson Hurricane Scale 1 to 5
Major Hurricanes = Saffir-Simpson Hurricane Scale 3, 4, or 5
"ACE" - Accumilated Cyclone Energy = An index that combines the numbers of systems, how long they existed and how intense they became. It is calculated by squaring the maximum sustained surface wind in the system every six hours that the cyclone is a Named Storm and summing it up for the season. It is expressed in 10 to the 4th kt**2.
U.S. Hurricanes = Number of U.S. Hurricane strikes. Inside the parenthesis is the highest Saffir-Simpson Scale category for each U.S. hurricane at landfall.
Blue highlight indicates that revisions have been made. The remainder of the 20th century is currently under revision.
Revised in August 2011 to reflect miscellaneous changes, primarily for pre-1930.
Revised in February 2012 to add the data from 2011.