753:
19:
56:
Storms are ranked from category 0 ("nuisance") to 5 ("extreme") on the scale. The impact of the storms is assessed in six different regions of the United States: Northeast, Northern
Rockies & Plains, Ohio Valley, South, Southeast, and Upper Midwest. A category 5
604:
766:
771:
959:
844:
733:
964:
64:
Out of the over 500 historical storms assessed since 1900, only 26 storms have been given a category 5 ranking. The highest ranking storm on the list is the
394:
268:
582:
954:
626:
69:
560:
53:(NESIS) system. Since its initiation, the NCDC has retroactively assigned RSI values to over 500 historical storms since 1900.
50:
848:
18:
518:
26:, the highest-ranking storm on the regional snowfall index, outlining the six regions assessed with the scale
496:
32:
372:
65:
23:
923:
310:
922:
Squires, Michael; Lawrinmore, Jay; Heim, Richard; Robinson, David; Gerbush, Mathieu; Estilow, Thomas.
752:
146:
776:
68:, which scored a value of 39.07. The most recent storm to receive a category 5 ranking is the
824:
758:
72:, which scored a value of 20.14. The following list orders the storms chronologically.
948:
46:
42:
748:
799:
61:
ranking is indicated by a numerical score of 18 or higher on the scale.
17:
38:
731:
648:
767:
List of regional snowfall index category 4 winter storms
772:
List of
Northeast snowfall impact scale winter storms
804:
NOAA: National
Centers for Environmental Information
845:"NOAA Product Highlight: Regional Snowfall Index"
825:"Regional Snowfall Index and Societal Impacts"
8:
79:
652:
960:Lists of disasters in the United States
788:
917:
915:
913:
911:
909:
907:
905:
903:
901:
899:
897:
895:
893:
891:
889:
887:
885:
49:. The system is a replacement for the
883:
881:
879:
877:
875:
873:
871:
869:
867:
865:
794:
792:
7:
965:Weather events in the United States
456:November 27 – December 1
70:January 2016 United States blizzard
627:January 19 – January 29
605:January 31 – February 2
527:Northeast, Ohio Valley, Southeast
497:October 30 – November 3
14:
929:. American Meteorological Society
41:to assess the societal impact of
751:
800:"Regional Snowfall Index (RSI)"
51:Northeast snowfall impact scale
723:National Climatic Data Center
1:
924:"The Regional Snowfall Index"
955:Climate of the United States
591:Northern Rockies and Plains
547:Northern Rockies and Plains
423:Northern Rockies and Plains
297:Northern Rockies and Plains
255:Northern Rockies and Plains
195:Northern Rockies and Plains
113:Northern Rockies and Plains
381:Upper Midwest, Ohio Valley
290:February 27 – March 5
168:February 26 – March 2
981:
659:Number of recorded storms
94:
91:
88:
85:
82:
76:List of category 5 events
33:regional snowfall index
66:Great Blizzard of 1978
27:
24:Great Blizzard of 1978
569:Northeast, Southeast
21:
583:December 21–28
540:November 20–28
352:February 18–23
332:February 21–27
269:November 11–21
208:December 18–23
126:February 17–21
37:is a system used by
22:Snowfall map of the
436:February 6–14
373:January 22–27
311:January 24–28
248:January 18–25
228:January 20–23
147:January 25–29
395:February 5–7
28:
777:List of blizzards
741:
740:
727:
726:
641:
640:
561:January 5–8
519:March 11–14
476:January 4–8
416:April 24–27
106:April 14–18
972:
939:
938:
936:
934:
928:
919:
860:
859:
857:
856:
847:. Archived from
841:
835:
834:
832:
831:
821:
815:
814:
812:
810:
796:
761:
756:
755:
653:
649:
629:
622:
607:
600:
585:
578:
563:
556:
541:
536:
521:
514:
499:
492:
477:
472:
457:
452:
437:
432:
417:
412:
397:
390:
375:
368:
353:
348:
333:
328:
313:
306:
291:
286:
271:
264:
249:
244:
229:
224:
209:
204:
189:
188:April 4–10
184:
169:
164:
149:
142:
127:
122:
107:
102:
80:
980:
979:
975:
974:
973:
971:
970:
969:
945:
944:
943:
942:
932:
930:
926:
921:
920:
863:
854:
852:
843:
842:
838:
829:
827:
823:
822:
818:
808:
806:
798:
797:
790:
785:
757:
750:
747:
742:
734:
732:
646:
644:Listed by month
625:
620:
603:
598:
581:
576:
559:
554:
539:
534:
517:
512:
495:
490:
475:
470:
455:
450:
435:
430:
415:
410:
393:
388:
371:
366:
351:
346:
331:
326:
309:
304:
289:
284:
267:
262:
247:
242:
227:
222:
207:
202:
187:
182:
167:
162:
145:
140:
125:
120:
105:
100:
78:
12:
11:
5:
978:
976:
968:
967:
962:
957:
947:
946:
941:
940:
861:
836:
816:
787:
786:
784:
781:
780:
779:
774:
769:
763:
762:
759:Weather portal
746:
743:
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738:
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728:
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724:
721:
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697:
693:
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689:
685:
684:
681:
677:
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673:
669:
668:
665:
661:
660:
657:
647:
645:
642:
639:
638:
636:
633:
630:
623:
617:
616:
614:
611:
608:
601:
595:
594:
592:
589:
586:
579:
573:
572:
570:
567:
564:
557:
551:
550:
548:
545:
542:
537:
531:
530:
528:
525:
522:
515:
509:
508:
506:
505:Upper Midwest
503:
500:
493:
487:
486:
484:
481:
478:
473:
467:
466:
464:
463:Upper Midwest
461:
458:
453:
447:
446:
444:
443:Upper Midwest
441:
438:
433:
427:
426:
424:
421:
418:
413:
407:
406:
404:
401:
398:
391:
385:
384:
382:
379:
376:
369:
363:
362:
360:
357:
354:
349:
343:
342:
340:
337:
334:
329:
323:
322:
320:
317:
314:
307:
301:
300:
298:
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292:
287:
281:
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275:
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265:
259:
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137:
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131:
128:
123:
117:
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114:
111:
108:
103:
97:
96:
93:
90:
87:
84:
77:
74:
13:
10:
9:
6:
4:
3:
2:
977:
966:
963:
961:
958:
956:
953:
952:
950:
925:
918:
916:
914:
912:
910:
908:
906:
904:
902:
900:
898:
896:
894:
892:
890:
888:
886:
884:
882:
880:
878:
876:
874:
872:
870:
868:
866:
862:
851:on 2014-11-29
850:
846:
840:
837:
826:
820:
817:
805:
801:
795:
793:
789:
782:
778:
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773:
770:
768:
765:
764:
760:
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749:
744:
737:
729:
722:
719:
718:
714:
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710:
706:
703:
702:
698:
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694:
690:
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686:
682:
679:
678:
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670:
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663:
662:
658:
655:
654:
651:
650:
643:
637:
634:
631:
628:
624:
619:
618:
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612:
609:
606:
602:
597:
596:
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590:
587:
584:
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568:
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562:
558:
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429:
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409:
408:
405:
402:
399:
396:
392:
387:
386:
383:
380:
377:
374:
370:
365:
364:
361:
358:
355:
350:
345:
344:
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338:
335:
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321:
318:
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308:
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302:
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283:
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99:
98:
81:
75:
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71:
67:
62:
60:
54:
52:
48:
47:United States
44:
43:winter storms
40:
36:
34:
25:
20:
16:
931:. Retrieved
853:. Retrieved
849:the original
839:
828:. Retrieved
819:
807:. Retrieved
803:
735:
613:Ohio Valley
319:Ohio Valley
277:Ohio Valley
63:
58:
55:
31:
29:
15:
809:16 February
949:Categories
855:2014-11-18
830:2014-11-18
783:References
635:Northeast
403:Northeast
339:Northeast
235:Southeast
175:Southeast
155:Southeast
696:February
680:December
672:November
89:Max. RSI
745:See also
688:January
664:October
933:22 July
95:Ref(s)
92:Region
59:extreme
45:in the
736:
720:Source
712:April
704:March
656:Month
632:20.14
610:21.99
588:19.62
566:26.37
544:22.00
524:24.63
502:30.18
483:South
480:22.64
460:22.19
440:27.06
420:25.95
400:18.42
378:39.07
359:South
356:19.36
336:34.03
316:18.13
294:20.38
274:34.69
252:21.14
232:18.14
215:South
212:21.13
192:34.20
172:24.42
152:18.53
133:South
130:31.89
110:20.84
927:(PDF)
86:Date
83:Year
35:(RSI)
935:2017
811:2016
621:2016
599:2011
577:2009
555:1996
535:1993
513:1993
491:1991
471:1988
451:1985
431:1985
411:1984
389:1978
367:1978
347:1971
327:1969
305:1967
285:1966
263:1950
243:1943
223:1940
203:1929
183:1927
163:1927
141:1922
121:1921
101:1920
39:NOAA
30:The
951::
864:^
802:.
791:^
715:3
707:2
699:6
691:8
683:2
675:3
667:1
937:.
858:.
833:.
813:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
