Tornado outbreak sequence of April 20–26, 2007

April 20–26, 2007 tornado outbreak sequence

Damage to a mobile home in Eagle Pass, TX from an EF3 tornado.
Type Tornado outbreak
Duration April 20–26, 2007
Tornadoes confirmed 93
Max rating1 F4 tornado
Casualties 10 deaths, ≥37 injuries
Areas affected Coahuila, Great Plains, Midwestern U.S., and Eastern U.S.
1Most severe tornado damage; see Fujita scale

The April 20–26, 2007 tornado outbreak sequence was an extended period of tornado activity that occurred in late April 2007. The outbreak sequence is most well known for producing a deadly pair of tornadoes that struck the border cities of Piedras Negras, Coahuila, and Eagle Pass, Texas, along the United States-Mexican border on April 24, 2007. Ten people were killed as a result of the outbreak.

Tornadoes confirmed

Confirmed tornadoes by Enhanced Fujita rating
EFU EF0 EF1 EF2 EF3 EF4 EF5 Total
0 61 23 6 2 1* 0 93

April 20 event

EF# Location County Time (UTC) Path length Damage
Nebraska
EF3 S of Moorefield SW of Brady Frontier, Lincoln 0216 16 miles
(25.6 km)		 Several farmsteads were hit by this strong tornado. In Frontier County, the tornado tore the roof and attached garage off of a house, blew the windows out of another, and destroyed a third. Also in this area, the tornado destroyed grain bins and outbuildings, carried a horse trailer 50 yards, overturned irrigation pivots, scattered irrigation pipe, destroyed a wind mill, and pulled a fence line out of the ground. In Lincoln County, the tornado destroyed a large storage building, removed the roof and an exterior wall from one home, and completely destroyed an unanchored home. Numerous trees and power poles were snapped along the path. Two people were injured when they were thrown 50 yards from the unanchored home.[1][2]
EF2 SW of Gothenburg Dawson, Custer 0302 19 miles
(30.6 km)		 In Dawson County, this large wedge tornado injured 9 people as it crossed Interstate 80, where several vehicles and semis were blown off the road. Nearly a dozen head of cattle were killed nearby, and a farmhouse lost half of its roof and had many windows blown out. In Custer County, the tornado destroyed a barn, chicken house, milk house, an oil bin, and two dryer bins. Irrigation pivots were overturned, and numerous trees and power poles were snapped along the path.[3][4]
Source: NOAA Storm Data

April 21 event

EF# Location County Time (UTC) Path length Damage
Colorado
EF0 SW of Granada Prowers 2325 3 miles
(4.8 km)		 Large, slow-moving tornado remained over open country with no damage.[5]
EF0 SE of Campo Baca 2325 3 miles
(4.8 km)		 Tornado remained over open fields, causing no damage.[6]
EF0 N of Bethune Kit Carson 2354 1 miles
(1.6 km)		 A shed was lofted and flipped over, resulting in damage to a hay bailer and two grain bins.[7]
Texas
EF0 W of Littlefield Lamb 2320 2 miles
(3.2 km)		 Weak tornado over open fields with no damage.[8]
EF1 NW of Boys Ranch to SE of Hartley Oldham, Hartley 2351 17 miles
(27.2 km)		 Power poles, signs, and fences were damaged.[9]
EF2 N of Fieldton to NW of Kress Lamb, Hale, Castro, Swisher 2357 29 miles
(46.4 km)		 In Lamb County, this long-tracked tornado damaged irrigation pivots and power poles, tore the roofs off of two brick buildings, heavily damaged five homes, destroyed light-weight metal structures, damaged farm equipment, and blew skirting from a mobile home as it passed near Olton. Irrigation pivots were destroyed and power poles were snapped in Hale, Castro, and Swisher Counties before the tornado dissipated. A dog and some livestock was killed, and one person was injured.[10]
EF2 SW of Dumas to SE of Stratford Moore, Sherman 0016 27 miles
(43.2 km)		 Large wedge tornado caused major damage in the town of Cactus. Ten mobile homes were destroyed with others heavily damaged. Many homes and businesses sustained varying degrees of damage. 14 people were injured.[11]
EF2 E of Four Way to SE of Dumas Moore 0050 12 miles
(19.2 km)		 Power poles were snapped, a fence was downed, and large hay bales were tossed around.[12]
EF2 Tulia Swisher 0057 3 miles
(4.8 km)		 30 homes and 20 businesses in Tulia were damaged or destroyed, with a supermarket and industrial buildings sustaining major damage. A storm chaser's vehicle was thrown into a brick building, and a semi-truck was blown into the chase vehicle. A collection of antique cars in a storage building were also damaged by the collapse of overhead doors and roof purlins, and 5 mobile homes were destroyed. A car dealership was heavily damaged, with 41 vehicles damaged by flying debris, and a motor home on the property was overturned. Damage and economic loss was estimated at $2 million. 3 people were injured.[13]
EF0 E of Dumas Moore 0106 1 miles
(1.6 km)		 Tornado remained over open country with no damage.[14]
EF1 NE of Tulia Swisher 0111 4 miles
(6.4 km)		 A large barn was heavily damaged.[15]
EF0 W of Sunray Moore 0119 2 miles
(3.2 km)		 Tornado remained over open country with no damage.[16]
EF0 E of Happy Swisher 0120 1 miles
(1.6 km)		 Large tornado remained over open country with no damage.[17]
EF1 NE of Sunray to SE of Stratford Moore, Sherman 0136 9 miles
(14.4 km)		 A barn was destroyed, hog barns sustained roof damage, and empty rail cars were overturned.[18]
EF1 E of Wayside Armstrong 0145 3 miles
(4.8 km)		 Damage was limited to power poles.[19]
EF1 E of Dumas to SW of Sunray Moore 0145 12 miles
(19.2 km)		 A feedyard sustained minor damage and double wooden power poles were snapped.[20]
EF0 SE of Lautz Sherman 0158 8 miles
(12.8 km)		 Tornado remained over open country with no damage.[21]
EF1 SW of Sunray Moore 0159 2 miles
(3.2 km)		 Property damage occurred and double wooden power poles were snapped.[22]
EF1 SE of Canyon Randall 0200 11 miles
(17.6 km)		 Tornado damaged power poles and farm structures. A horse was killed.[23]
EF2 NE of Claude to SE of Panhandle Armstrong, Carson 0235 13 miles
(20.8 km)		 Power poles were damaged while tractors, turbines, vehicles and cotton presser box cars were moved and/or tossed, some for considerable distances.[24]
EF0 E of Claude Armstrong 0240 4 miles
(6.4 km)		 Tornado remained over open country with no damage.[25]
EF1 W of Alanreed to SW of Kings Mill Gray 0250 13 miles
(20.8 km)		 A house lost part of its roof, power poles were snapped, and storage buildings and outbuildings were destroyed.[26]
South Dakota
EF0 SE of Plankinton Aurora 0048 3 miles
(4.8 km)		 Tornado remained over open country with no damage.[27]
EF0 SE of Esmond Kingsbury 0156 unknown Brief tornado caused no damage.[28]
Source: NOAA Storm Data

April 22 event

EF# Location County Time (UTC) Path length Damage
Nebraska
EF0 SW of Osmond Pierce 1943 1 miles
(1.6 km)		 Tornado remained over open country with no damage.[29]
Source: NOAA Storm Data

April 23 event

EF# Location County Time (UTC) Path length Damage
Colorado
EF0 N of Wray Yuma 0449 1 miles
(1.6 km)		 Tornado remained over open fields, causing no damage.[30]
EF0 SE of Holyoke Phillips 0500 unknown Brief tornado caused no damage.[31]
Oklahoma
EF0 SW of Buffalo Harper 2314 unknown Small tornado remained over open country with no damage.[32]
EF0 NE of Laverne Harper 2351 unknown Tornado remained over open country with no damage.[33]
Texas
EF0 E of Colorado City Mitchell 0043 4 miles
(6.4 km)		 Tornado damaged field irrigation system, power poles, vegetation, and signs along Interstate 20.[34]
EF0 SW of Janus Nolan 0104 1 miles
(1.6 km)		 Tornado remained over open country with no damage[35]
EF0 S of Del Rio Val Verde 0106 unknown Small tornado remained over open country with no damage.[36]
EF0 E of Del Rio Val Verde 0134 1 miles
(1.6 km)		 Minor damage to ten homes and mobile homes. Telephone poles were knocked down and outbuildings were tossed around.[37]
EF0 NE of Sweetwater Nolan 0200 1 miles
(1.6 km)		 Tornado remained over open country with no damage.[38]
EF0 NE of Trent Taylor 0220 unknown Brief tornado touchdown over open country with no damage.[39]
EF0 SW of Hodges Jones 0241 1 miles
(1.6 km)		 Tornado remained over open country with no damage.[40]
Kansas
EF1 E of Sharon Springs Wallace 0047 12 miles
(19.2 km)		 Power poles were broken.[41]
EF0 N of Wallace Wallace 0103 5 miles
(8 km)		 Tornado remained over open fields with no damage.[42]
EF0 SE of Sitka Clark 0104 1 miles
(1.6 km)		 Tornado remained over open country with no damage.[43]
EF1 E of Sitka Clark 0110 8 miles
(12.8 km)		 Tornado damaged trees, power poles, and a small shed. A visible path was left in a grass field by the tornado.[44]
EF0 SW of Protection Comanche 0122 2 miles
(3.2 km)		 Minor tree damage occurred.[45]
EF0 NW of Protection Comanche 0137 2 miles
(3.2 km)		 Tornado remained over pasture land with no damage.[46]
EF0 SE of Brewster Thomas 0238 6 miles
(9.6 km)		 An empty, poorly anchored grain bin was destroyed, and a house sustained minor damage. Trees were uprooted as well.[47]
EF0 NE of Goodland Sherman 0302 1 miles
(1.6 km)		 Tornado remained over open fields with no damage.[48]
EF1 NW of Levant to SW of Atwood Thomas Rawlins 0315 16 miles
(25.6 km)		 Damage to trees and power poles occurred.[49]
EF1 S of Atwood Rawlins 0415 13 miles
(20.8 km)		 Outbuildings and grain bins were destroyed and one home lost its roof at a farmstead. Irrigation systems and outbuildings were damaged at other farms as well.[50]
EF1 SE of Atwood Rawlins 0444 6 miles
(9.6 km)		 Power poles were broken, with one residence receiving outbuilding and window damage.[51]
Nebraska
EF0 SW of Enders (1st tornado) Chase 0415 1 miles
(1.6 km)		 Weak tornado remained over open country with no damage.[52]
EF0 SW of Enders (2nd tornado) Chase 0416 unknown Weak tornado remained over open country with no damage.[53]
Source: NOAA Storm Data

April 24 event

EF# Location County Time (UTC) Path length Damage
Colorado
EF0 Wild Horse Cheyenne 1758 1 miles
(1.6 km)		 Tornado struck the east side of town. A quonset hut sustained minor damage to its doors, the cross on a church was damaged, and a trailer was pushed over against a building.[54]
EF0 W of Wild Horse Cheyenne 1815 4 miles
(6.4 km)		 Tornado remained over open fields with no damage.[55]
EF0 NW of Wild Horse Cheyenne, Lincoln 1838 2 miles
(3.2 km)		 Tornado remained over open fields with no damage.[56]
EF0 SE of Boyero Lincoln 1858 unknown Brief tornado touchdown with no damage.[57]
EF1 N of Cheyenne Wells Cheyenne 1926 5 miles
(8 km)		 A power pole was broken.[58]
EF0 NE of Arapahoe Cheyenne 1937 4 miles
(6.4 km)		 Tornado remained over open fields with no damage.[59]
EF0 N of Arapahoe Cheyenne 1955 5 miles
(8 km)		 Tornado remained over open fields with no damage.[60]
EF0 NW of Cheyenne Wells (1st tornado) Cheyenne 2000 1 miles
(1.6 km)		 Tornado remained over open fields with no damage.[61]
EF0 NW of Cheyenne Wells (2nd tornado) Cheyenne 2000 1 miles
(1.6 km)		 Tornado remained over open fields with no damage.[62]
Kansas
EF0 NW of Weskan Wallace 1948 1 miles
(1.6 km)		 Brief tornado over open country with no damage.[63]
EF0 SW of Nickerson (1st tornado) Reno 0001 unknown Brief tornado over open country with no damage.[64]
EF0 SW of Nickerson (2nd tornado) Reno 0009 unknown Brief tornado over open country with no damage.[65]
EF0 SW of Nickerson (3rd tornado) Reno 0012 unknown Brief tornado over open country with no damage.[66]
EF0 SW of Nickerson (4th tornado) Reno 0014 unknown Brief tornado over open country with no damage.[67]
EF0 SW of Nickerson (5th tornado) Reno 0016 unknown Brief tornado over open country with no damage.[68]
EF0 NW of Nickerson Reno 0029 unknown Brief tornado over open country with no damage.[69]
Texas
EF1 Pecan Plantation Hood 1900 1 miles
(1.6 km)		 Tornado moved through Pecan Plantation, causing damage to trees, tree limbs, roofs, windows, playground sets, and fences. One home lost sections of its roof, and had its windows and garage door blown out.[70]
EF0 E of Denton Denton 1920 1 miles
(1.6 km)		 Tornado caused significant roof damage to a restaurant, snapped tree limbs, and damaged a gas station sign. A trailer was also rolled for 20 feet.[71]
EF3 Eagle Pass Maverick 0001 4 miles
(6.4 km)		 7 deaths - Rain-wrapped tornado caused major damage in Eagle Pass. An elementary school was destroyed, and two nearby brick businesses were left with only interior walls standing. Numerous homes and mobile homes were destroyed as well, some of which were leveled or swept away. A total of 59 manufactured homes and 57 houses were destroyed by the tornado. Major damage was reported to 21 manufactured homes and 19 houses, with minor damage to 10 manufactured homes, 22 houses, and 9 apartments. 5 of the fatalities occurred in a single mobile home.[72]
EF1 S of Bartonville Denton 0019 3 miles
(4.8 km)		 Multiple homes sustained heavy roof damage. Trees, fences, and a horse barn were also damaged.[73]
EF0 NW of Snook Burleson 0715 3 miles
(4.8 km)		 Two mobile homes and metal sheds sustained roof damage. Trees were snapped as well.[74]
Coahuila
F4 Piedras Negras Coahuila 2330-0000 unknown 3 deaths - Major damage occurred, with numerous homes and businesses destroyed. Some of the structures were leveled, and extensive tree and power line damage occurred along the path. Worst damage occurred in the Villa de Fuente area of town.[75]
Oklahoma
EF0 NW of Pawhuska Osage 2027 6 miles
(9.6 km)		 Tornado remained over open country with no damage.[76]
Missouri
EF0 W of Golden City Barton 2320 3 miles
(4.8 km)		 Three outbuildings sustained minor damage.[77]
Arkansas
EF1 S of Webb City Franklin 0043 1 miles
(1.6 km)		 Tornado tore portions of the roofs off of two houses, damaged several other homes, destroyed several outbuildings, and snapped or uprooted a number of trees.[78]
Source: NOAA Storm Data

April 25 event

EF# Location County Time (UTC) Path length Damage
Texas
EF0 E of Oyster Creek Brazoria 1705 unknown Brief tornado touchdown with no damage.[79]
EF0 Alabama-Coushatta Reservation Polk 0120 unknown Brief tornado touchdown with no damage.[80]
Illinois
EF0 N of Assumption Christian 1940 unknown Brief tornado touchdown over open fields with no damage.[81]
Source: NOAA Storm Data

April 26 event

EF# Location County Time (UTC) Path length Damage
Illinois
EF0 Plainfield/Bolingbrook areas Will 1958 3 miles
(4.8 km)		 Tornado caused minor damage to a nursing home, several houses, a construction trailer, and playground equipment. Lawn furniture and trampolines were blown away, and tree damage occurred as well. A van in a parking lot was flipped onto its side, with other nearby vehicles affected as well.[82]
Indiana
EF1 E of Springville La Porte 2108 1 miles
(1.6 km)		 A barn was destroyed, and two homes were damaged by falling trees and tree limbs.[83]
EF1 SW of Hesston La Porte unknown unknown A patrol car was picked up and thrown 150 feet over a fence. The police officer inside sustained minor injuries. In addition, numerous trees were uprooted or snapped off along the path. Two homes suffered damage in the area as well.[84]
Tennessee
EF0 NW of Crossville Cumberland 2050 8 miles
(12.8 km)		 A mobile home had its roof torn off, a small wooden building was destroyed, a shed lost sections of metal roofing, trees were snapped, and a riding mower was thrown 200 yards into a field.[85]
EF1 NW of New Tazewell Claiborne 2352 5 miles
(8 km)		 Numerous trees were snapped and uprooted and homes sustained minor damage. 7 people were injured.[86]
Michigan
EF1 W of Berrien Springs Berrien 2312 1 miles
(1.6 km)		 Buildings sustained minor damage and trees were snapped.[87]
Kentucky
EF1 NE of Hillsboro Fleming 2350 4 miles
(6.4 km)		 Three barns were destroyed, a concrete block grain silo was blown over, and trees were uprooted and snapped.[88]
Ohio
EF0 NE of Macon Brown 2255 1 miles
(1.6 km)		 Trees were uprooted and limbs were snapped, a trampoline was tossed, the porch of a home was ripped off, and parts of the roof and siding of a barn were damaged.[89]
EF1 SE of Peebles Adams 2323 2 miles
(3.2 km)		 A metal barn was destroyed, the roof was torn off of a house, and several trees were snapped.[90]
EF0 SW of Omega Pike 0025 1 miles
(1.6 km)		 Two barns sustained minor damage and two trees were snapped.[91]
Colorado
EF0 SW of Byers Arapahoe 0102 unknown Brief tornado with no damage.[92]
Source: NOAA Storm Data

April 27 event

EF# Location County Time (UTC) Path length Damage
Virginia
EF0 N of Ark Gloucester 1630 5 miles
(8 km)		 Numerous trees were snapped and uprooted, one of which landed on a house. Horse stables had their roofs blown off as well.[93]
Missouri
EF0 S of Hume Bates 2320 1 miles
(1.6 km)		 Minor tree damage occurred.[94]
EF0 Metz to Walker Barton 2330 13 miles
(20.8 km)		 A barn and numerous trees were damaged.[95]
Source: NOAA Storm Data

See also

References

  1. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24016
  2. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24002
  3. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24024
  4. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=28970
  5. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=26605
  6. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=26606
  7. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21478
  8. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29932
  9. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29726
  10. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29936
  11. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29728
  12. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29735
  13. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29941
  14. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29736
  15. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29942
  16. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29737
  17. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29737
  18. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29730
  19. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29738
  20. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29739
  21. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=68314
  22. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29740
  23. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29741
  24. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29734
  25. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29742
  26. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29742
  27. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29179
  28. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29190
  29. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=19351M
  30. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21784
  31. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=20220
  32. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=30543
  33. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=30544
  34. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=22994
  35. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=22994
  36. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=27703
  37. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=27705
  38. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24680
  39. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24681
  40. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24681
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  43. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=35997
  44. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=30115
  45. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=30120
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  48. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21774
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  50. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21776
  51. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29291
  52. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24121
  53. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24121
  54. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29475
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  59. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29557
  60. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29561
  61. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29565
  62. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29564
  63. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=29566
  64. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21618
  65. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21621
  66. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21620
  67. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21621
  68. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21621
  69. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21623
  70. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24710
  71. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24693
  72. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=27708
  73. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24709
  74. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=27540
  75. ↑ "Agenda presidencial: Supervisará Calderón reconstrucción en Piedras Negras" (in Spanish). Mexico City: El Universal. 2007-05-03. [rough translation:] April 24 a tornado of fourth degree in the scale Fujita-Pearson and with gusts of wind from among 250 and 300 kilometers per hour, he whipped the border zone of Coahuila and Texas, causing three deaths in Black Stones and ten in American territory.
  76. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=19159
  77. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=30298
  78. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=19160
  79. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=27571
  80. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=27576
  81. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=27576
  82. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=26652
  83. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=26241
  84. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=26242
  85. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=21876
  86. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=25724
  87. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=71375
  88. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=19317
  89. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=25540
  90. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=25541
  91. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=25542
  92. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=20239
  93. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=26885
  94. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=24310
  95. ↑ http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=37739
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