List of SPC High Risk days

From Wikipedia, the free encyclopedia

The following days had a declaration of High Risk of severe weather in a certain part of the United States according to the Storm Prediction Center.

Busts indicate days that a severe weather outbreak was expected but never materialized, with little or no severe activity. Limited details are available for days before the late 1990s.

The only month that has not recorded a known High Risk day is September. No High Risk has ever been issued west of the Rocky Mountains.

Date Area Results Notes
March 28, 1984 Carolinas[1] Tornado outbreak produced ≥24 tornadoes; killed 57 Tied for the deadliest High Risk day
May 7, 1988 Oklahoma Busted; few severe reports
November 15, 1989 Southern U.S.[2] Tornado outbreak produced 18 tornadoes; killed 21
March 13, 1990 Central U.S. Tornado outbreak produced 56 tornadoes; killed 2 Unconfirmed risk level
June 2, 1990 Ohio Valley Tornado outbreak produced 88 tornadoes; killed 9
April 11, 1991 Kansas Busted; few severe reports
April 12, 1991 Kansas, Oklahoma, Texas Moderate tornado/hail event First known back-to-back High Risk days
April 26, 1991 Kansas, Oklahoma Tornado outbreak produced 58 tornadoes; killed 24
April 28, 1991 Kansas Busted; only a few tornadoes and severe reports
June 7, 1993 Upper Midwest Tornado outbreak produced ~40 tornadoes; no deaths
March 27, 1994 Southern U.S. Tornado outbreak produced 26 tornadoes; killed 42
April 25, 1994 Central U.S. End of tornado outbreak sequence that produced 29 tornadoes and many hail reports; killed 3
August 27, 1994 Upper Midwest Small tornado outbreak produced 12 tornadoes; killed 4 Only High Risk ever issued in August
November 27, 1994 Southern U.S. Tornado outbreak produced 19 tornadoes; killed 6
April 17, 1995 Oklahoma, Texas Primarily a derecho; but 21 tornadoes (mostly weak) reported
May 7, 1995 Kansas, Oklahoma, Texas First part of a tornado outbreak sequence that produced 32 tornadoes; killed 3
May 12, 1995 Kansas Second part of the same tornado outbreak sequence although mostly a bust
May 13, 1995 Ohio Valley Continuation of the same tornado outbreak sequence that produced 27 tornadoes and a long derecho; killed 3
May 17, 1995 Kansas Continuation of the same tornado outbreak sequence although again mostly a bust; only 8 tornadoes and few other reports
April 19, 1996 Illinois, Indiana Tornado outbreak produced 74 tornadoes (plus more the next day); killed 1
May 26, 1996 Kansas, Oklahoma Small tornado event became a mini-derecho
May 2, 1997 Mississippi, Alabama Progressive derecho that also produced 8 tornadoes; killed 1
July 1, 1997 Upper Mississippi Valley Moderate tornado outbreak reorganized into a progressive derecho
February 10, 1998 Texas, Louisiana Rare winter serial derecho
April 8, 1998 Alabama[3] Tornado outbreak produced 15 tornadoes (mostly in more urbanized areas) plus widespread wind and hail; killed 41
April 15, 1998 Middle Mississippi Valley First phase of a two-day tornado outbreak that produced 23 tornadoes; killed 4
April 16, 1998 Tennessee Second phase of a two-day tornado outbreak that produced 38 tornadoes including the Nashville tornado; killed 8
May 31, 1998 Northeastern U.S.[4][5] Major derecho and tornado outbreak produced 39 tornadoes and enormous wind damage; killed 7 Only High Risk ever issued in the Northeast
June 14, 1998 Ohio Valley Small tornado event produced 22 mostly weak tornadoes followed by a progressive derecho
January 21, 1999 Arkansas[6][7] Tornado outbreak produced 77 tornadoes; killed 9 Only High Risk ever issued in January
March 8, 1999 Arkansas, Louisiana Busted; few tornadoes with some scattered hail and wind
April 8, 1999 Iowa, Missouri, Illinois Tornado outbreak produced 56 tornadoes; killed 6
May 3, 1999 Oklahoma, Kansas[8] Tornado outbreak produced 61 tornadoes; killed 48
May 4, 1999 Oklahoma, Arkansas, Texas[9] Second day of the same tornado outbreak produced 39 tornadoes; killed 1
May 5, 1999 Southern U.S. Third day of the same tornado outbreak produced 18 tornadoes plus a significant serial derecho; killed 3 First and only occurrence of three consecutive High Risk days
June 5, 1999 South Dakota, Nebraska[10] Busted; isolated tornadoes and scattered wind and hail damage
April 6, 2001 Oklahoma, Kansas[11] Serial derecho with widespread wind damage
April 11, 2001 Iowa, Illinois, Wisconsin[12] Tornado outbreak produced 40 tornadoes; killed 2[13]
June 11, 2001 Minnesota, Wisconsin[14] Progressive derecho with widespread wind damage
October 13, 2001 U.S. Gulf Coast[15] Localized tornado event produced 13 tornadoes
October 24, 2001 Midwest[16] Tornado outbreak produced 25 tornadoes plus a major serial derecho; killed 2
April 16, 2002 Upper Midwest[17] Busted; isolated wind damage and tornadoes
July 31, 2002 Minnesota, Wisconsin[18] Busted; isolated wind damage
November 10, 2002 Midwest and Southern U.S.[19] Tornado outbreak produced 76 tornadoes and extensive wind damage; killed 36
December 23, 2002 Texas, Louisiana[20] Localized tornado event produced 14 tornadoes Only High Risk ever issued in December
April 6, 2003 Texas, Louisiana, Mississippi[21] Localized tornado event produced 13 tornadoes
May 4, 2003 Central U.S.[22] Day 5 of a tornado outbreak sequence produced 86 tornadoes; killed 38
May 5, 2003 Southern U.S.[23] Day 6 of a tornado outbreak sequence produced 22 tornadoes but no deaths
May 8, 2003 Kansas, Oklahoma[24] Day 9 of a tornado outbreak sequence produced 42 tornadoes but no deaths
May 10, 2003 Central U.S.[25] Day 11 of a tornado outbreak sequence produced 60 tornadoes but no deaths
May 15, 2003 Texas, Oklahoma[26] Widespread tornadoes (unknown number) but mostly weak and in open country
March 4, 2004 Texas, Oklahoma[27] Isolated tornadoes reorganized into a large serial derecho
May 22, 2004 Nebraska, Iowa[28] Tornado outbreak produced 40+ tornadoes; killed 1
May 24, 2004 Nebraska, Iowa[29] Hybrid derecho/tornado outbreak produced ~30 tornadoes; killed 1
May 29, 2004 Central U.S.[30] First day of a two-day tornado outbreak produced ~60 tornadoes; killed 3
May 30, 2004 Central U.S.[31] Second day of a two-day tornado outbreak produced ~90 tornadoes; killed 2
April 11, 2005 Louisiana, Mississippi[32] Busted; only isolated wind damage which killed 1
June 4, 2005 Central U.S.[33] Moderate tornado outbreak produced ~25 tornadoes and widespread wind and hail damage
November 15, 2005 Midwest and Southern U.S.[34] Tornado outbreak produced 50 tornadoes; killed 2
March 12, 2006 Midwest[35] Tornado outbreak produced 62 tornadoes; killed 8
April 6, 2006 Nebraska, Kansas[36] First day of a three-day tornado outbreak produced 13 tornadoes, but no deaths.
April 7, 2006 Southern U.S.[37] Second day of a three-day tornado outbreak produced 49 tornadoes; killed 13 Only High Risk to be issued on Day 2 (the day before the event)[38]
March 1, 2007 Southern U.S.[39] Tornado outbreak produced 37 tornadoes; killed 20
April 13, 2007 Texas[40] Busted; only a few reports of tornadoes, although major straight line wind damage in the Dallas/Ft Worth Metroplex
April 24, 2007 Texas[41] Busted; although some tornadoes and wind reports outside the risk area; killed 7
May 5, 2007 Nebraska, Kansas[42] Second day of a three-day tornado outbreak produced 84 tornadoes; killed 2
June 7, 2007 Upper Midwest[43] Localized tornado event reorganized into a moderate wind event
February 5, 2008 Middle Mississippi Valley[44] Tornado outbreak produced 82 tornadoes; killed 57 Tied for the deadliest High Risk day
March 15, 2008 Georgia, South Carolina[45] Tornado outbreak produced 28 tornadoes; killed 2
May 22, 2008 Kansas[46] Day 1 of a tornado outbreak sequence produced 24 tornadoes; killed 1
May 29, 2008 Nebraska, Iowa, South Dakota[47] Day 8 of a tornado outbreak sequence produced 42 tornadoes but no deaths
June 5, 2008 Midwest[48] Tornado outbreak/serial derecho[49]

[edit] References

  1. ^ http://www4.ncsu.edu/~nwsfo/storage/cases/19840328/conv_outlook_19z.jpg
  2. ^ http://www.srh.noaa.gov/bmx/significant_events/1989/11_15/graphics/swody15z.jpg
  3. ^ NOAA's National Weather Service - Birmingham, Alabama
  4. ^ Central Atlantic Storm Investigators - Severe Thunderstorms / Tornados of May 31, 1998
  5. ^ Front Page Display and Description-Example
  6. ^ http://www.targetarea.net/pic3/high21.jpg
  7. ^ Front Page Display and Description-Example
  8. ^ Eric Nguyen's 1999 Chase Documents!
  9. ^ Eric Nguyen's 1999 Chase Documents!
  10. ^ http://www.nwas.org/ej/2007-EJ3/figure_1.htm
  11. ^ Storm Prediction Center (2001). Severe weather outlook for April 6, 2001. Retrieved on 2008-03-12.
  12. ^ Storm Prediction Center (2001). Severe weather outlook for April 11, 2001. Retrieved on 2008-03-12.
  13. ^ Fox News Story (2001). Two dead in Agency Twister. Retrieved on 2008-04-10.
  14. ^ Storm Prediction Center (2001). Severe weather outlook for June 11, 2001. Retrieved on 2008-03-12.
  15. ^ Storm Prediction Center (2001). Severe weather outlook for October 13, 2001. Retrieved on 2008-03-12.
  16. ^ Storm Prediction Center (2001). Severe weather outlook for October 24, 2001. Retrieved on 2008-03-12.
  17. ^ Storm Prediction Center (2002). Severe weather outlook for April 16, 2002. Retrieved on 2008-03-12.
  18. ^ Storm Prediction Center (2002). Severe weather outlook for July 31, 2002. Retrieved on 2008-03-12.
  19. ^ Storm Prediction Center (2002). Severe weather outlook for November 10, 2002. Retrieved on 2008-03-12.
  20. ^ Storm Prediction Center (2002). Severe weather outlook for December 23, 2002. Retrieved on 2008-03-12.
  21. ^ Storm Prediction Center (2003). Severe weather outlook for april 6, 2003. Retrieved on 2008-03-12.
  22. ^ Storm Prediction Center (2003). Severe weather outlook for May 4, 2003. Retrieved on 2008-03-12.
  23. ^ Storm Prediction Center (2003). Severe weather outlook for May 5, 2003. Retrieved on 2008-03-12.
  24. ^ Strom Prediction Center (2003). Severe weather outlook for May 8, 2003. Retrieved on 2008-03-12.
  25. ^ Storm Prediction Center (2003). Severe weather outlook for May 10, 2003. Retrieved on 2008-03-12.
  26. ^ Storm Prediction Center (2003). Severe weather report for May 15, 2003. Retrieved on 2008-03-12.
  27. ^ Storm Prediction Center (2004). Severe weather outlook for March 4, 2004. Retrieved on 2008-03-12.
  28. ^ Storm Prediction Center (2004). Severe weather outlook for May 22, 2004. Retrieved on 2008-03-12.
  29. ^ Storm Prediction Center (2004). Severe weather outlook for May 24, 2004. Retrieved on 2008-03-12.
  30. ^ Storm Prediction Center (2004). Severe weather outlook for May 29, 2004. Retrieved on 2008-03-12.
  31. ^ Storm Prediction Center (2004). Severe weather outlook for May 30, 2004. Retrieved on 2008-03-12.
  32. ^ Storm Prediction Center (2005). Severe weather outlook for April 11, 2005. Retrieved on 2008-03-12.
  33. ^ Storm Prediction Center (2005). Severe weather outlook for June 4, 2005. Retrieved on 2008-03-12.
  34. ^ Storm Prediction Center (2005). Severe weather outlok for November 15, 2005. Retrieved on 2008-03-12.
  35. ^ Storm Prediction Center (2006). Severe weather outlook for March 12, 2006. Retrieved on 2008-03-12.
  36. ^ Storm Prediction Center (2006). Severe weather outlook for April 6 2006. Retrieved on 2008-03-12.
  37. ^ Storm Prediction Center (2006). Severe weather outlook for April 7, 2006. Retrieved on 2008-03-12.
  38. ^ Storm Prediction Center (2006). Severe weather outlook for April 7, 2006 (Day 2). Retrieved on 2008-03-12.
  39. ^ Storm Prediction Center (2007). Severe weather outlook for March 1, 2007. Retrieved on 2008-03-12.
  40. ^ Storm Prediction Center (2007). Severe weather outlook for April 13, 2007. Retrieved on 2008-03-12.
  41. ^ Storm Prediction Center (2007). Severe weather outlook for April 24, 2007. Retrieved on 2008-03-12.
  42. ^ Storm Prediction Center (2007). Severe weather outlook for May 5, 2007. Retrieved on 2008-03-12.
  43. ^ Storm Prediction Center (2007). Severe weather outlook for June 7, 2007. Retrieved on 2008-03-12.
  44. ^ Storm Prediction Center (2008). Severe weather outlook for February 5, 2008. Retrieved on 2008-03-12.
  45. ^ Storm Prediction Center Mar 15, 2008 2000 UTC Day 1 Convective Outlook
  46. ^ Storm Prediction Center May 22, 2008 2000 UTC Day 1 Convective Outlook
  47. ^ Storm Prediction Center May 29, 2008 1300 UTC Day 1 Convective Outlook
  48. ^ Storm Prediction Center June 5, 2008 1300 UTC Day 1 Convective Outlook
  49. ^ http://www.spc.noaa.gov/climo/reports/080605_rpts.html

[edit] External links