Hypothetical Tornadoes Wiki
Tag: Visual edit
Line 15: Line 15:
 
| total injuries = 157
 
| total injuries = 157
 
}}
 
}}
 
The July 4, 2021 Tornado Outbreak was an outbreak of tornadoes that effected portions of South Dakota and Minnesota. Over the course of the outbreak, 12 tornadoes would touchdown, including one EF4 that struck the town of Gary, South Dakota.
   
 
The outbreak was one of the most destructive in South Dakota history, with over $500 Million dollars in damages being done. 15 people would be killed in the outbreak, with 14 of those deaths being attributed to the Gary tornado, and 1 of those deaths being caused by the long-tracked Lake Cochrane EF2.
The July 4, 2021 Tornado Outbreak was an outbreak of tornadoes that effected portions of South Dakota and Minnesota. Over the course of the outbreak, 12 tornadoes would touchdown, including one EF4 that struck the town of Gary, South Dakota.
 
   
 
The July 4th outbreak was also notable for the time it struck. A majority of people in the area were celebrating the fourth of July when the tornadoes struck. The City of Gary had just ended their fireworks show when the EF4 tornado that would decimate the city struck. Many of the tornadoes casualties were people who were returning home from the show when the tornado struck.
The outbreak was one of the most destructive in South Dakota history, with over $500 Million dollars in damages being done. 15 people would be killed in the outbreak, with 14 of those deaths being attributed to the Gary tornado, and 1 of those deaths being caused by the long-tracked Lake Cochrane EF2.
 
   
 
Numerous media outlets would deem the outbreak as the "Fireworks Tornado Outbreak" due to it occurring on July Fourth when a large amount of fireworks shows were being held.
The July 4th outbreak was also notable for the time it struck. A majority of people in the area were celebrating the fourth of July when the tornadoes struck. The City of Gary had just ended their fireworks show when the EF4 tornado that would decimate the city struck. Many of the tornadoes casualties were people who were returning home from the show when the tornado struck.
 
 
Numerous media outlets would deem the outbreak as the "Fireworks Tornado Outbreak" due to it occurring on July Fourth when a large amount of fireworks shows were being held.
 
   
   
Line 28: Line 27:
 
== Synopsis ==
 
== Synopsis ==
   
A moderately intense low pressure system would advance through the upper midwest along a cold front as warm, moist air would be ushered northwards from the Gulf of Mexico via a pressure stationed over the western Atlantic. Shear would be minimal in most places, however, and morning convection would prove to be a limiting factor. However, a narrow corridor of rather favorable conditions would setup in and around Deuel County, South Dakota, where localized levels of high shear, high CAPE, and plentiful amounts of lift and moisture would arise. The SPC would quickly identify this corridor, and would issue a localized Moderate risk of severe weather driven by 15% SIG tornado chances and 45% SIG hail parameters. As the day would advance, several supercells embedded within a QLCS would move through this corridor, and take advantage of the favorable conditions in place, producing several tornadoes; some of which would prove to be intense and even violent.
+
A moderately intense low pressure system would advance through the upper midwest along a cold front as warm, moist air would be ushered northwards from the Gulf of Mexico via a pressure stationed over the western Atlantic. Shear would be minimal in most places, however, and morning convection would prove to be a limiting factor. However, a narrow corridor of rather favorable conditions would setup in and around Deuel County, South Dakota, where localized levels of high shear, high CAPE, and plentiful amounts of lift and moisture would arise. The SPC would quickly identify this corridor, and would issue a localized Moderate risk of severe weather driven by 15% SIG tornado chances and 45% SIG hail parameters. As the day would advance, several supercells embedded within a QLCS would move through this corridor, and take advantage of the favorable conditions in place, producing several tornadoes; some of which would prove to be intense and even violent.
 
==Tornadoes==
 
==Tornadoes==
   
Line 41: Line 40:
 
| scope="col" width="1%" allign="center" |EF#
 
| scope="col" width="1%" allign="center" |EF#
 
! scope="col" width="12%" align="center" class="unsortable" |Location
 
! scope="col" width="12%" align="center" class="unsortable" |Location
!<nowiki> scope="col" width="4%" align="center" class-"unsortable" |County/ Parish</nowiki>
+
! scope="col" width="4%" align="center" class-"unsortable" |County/ Parish
 
! scope="col" width="1%" align="center" |state
 
! scope="col" width="1%" align="center" |state
 
! scope="col" width="4%" align="center" data-sort-type="number" | Time (UTC)
 
! scope="col" width="4%" align="center" data-sort-type="number" | Time (UTC)
!<nowiki> scope="col" width="4%" align="center" data-sort-tyope"number" |Path length (mi)</nowiki>
+
! scope="col" width="4%" align="center" data-sort-tyope"number" |Path length (mi)
!<nowiki> scope="col" width="4%" align="center" data-sort-tyope"number" |Max width (yd)</nowiki>
+
! scope="col" width="4%" align="center" data-sort-tyope"number" |Max width (yd)
 
! scope="col" width="70%" class="unsortable" align="center" |Summary
 
! scope="col" width="70%" class="unsortable" align="center" |Summary
 
|-
 
|-
Line 58: Line 57:
 
|SD
 
|SD
 
|1201-1207
 
|1201-1207
|1.27
+
|1.27
 
|142
 
|142
 
|A brief tornado did low end EF1 damage to a power pole along I-29 before abruptly lifting.
 
|A brief tornado did low end EF1 damage to a power pole along I-29 before abruptly lifting.
Line 74: Line 73:
 
|1.6
 
|1.6
 
|109
 
|109
|A low end EF1 tornado impacted the small hamlet of Bemis. The tornado's rather irregular motion (It first began to move east north east, before shifting south east, and then east) saved a majority of Bemis from a direct hit. 1 injury was reported, although it was determined to be rather minor.
+
|A low end EF1 tornado impacted the small hamlet of Bemis. The tornado's rather irregular motion (It first began to move east north east, before shifting south east, and then east) saved a majority of Bemis from a direct hit. 1 injury was reported, although it was determined to be rather minor.
 
|-
 
|-
 
| bgcolor="#{{storm colour|Storm}}" |
 
| bgcolor="#{{storm colour|Storm}}" |
Line 95: Line 94:
 
|6.2
 
|6.2
 
|520
 
|520
| A tornado of low end EF3 intensity impacted farmsteads around Lake Alice before quickly dissipating north Lone Tree Lake. injuries were documented.
+
| A tornado of low end EF3 intensity impacted farmsteads around Lake Alice before quickly dissipating north Lone Tree Lake. injuries were documented.
 
|-
 
|-
 
| bgcolor="#{{storm colour|cat4}}" |ection on this Tornado
 
| bgcolor="#{{storm colour|cat4}}" |ection on this Tornado
|-
 
|}
 
 
|E of Clear Lake to E of Gary
 
|E of Clear Lake to E of Gary
 
|Deuel, Yellow Medicine, Lac Qui Parle
 
|Deuel, Yellow Medicine, Lac Qui Parle
Line 125: Line 122:
 
|710
 
|710
 
|5 fatalities - A fairly short lasting yet wide and fairly intense tornado developed over the vast farm fields of northern Deuel County, before striking the Dixie Fireworks Shop along US 221 as EF1 strength. At the time, a large fireworks show was being held at the Dixie Fireworks Shop. 5 spectators would be killed when the tornado unexpectedly struck the area. 17 others were injured. The tornado briefly crossed into Minnesota before lifting.
 
|5 fatalities - A fairly short lasting yet wide and fairly intense tornado developed over the vast farm fields of northern Deuel County, before striking the Dixie Fireworks Shop along US 221 as EF1 strength. At the time, a large fireworks show was being held at the Dixie Fireworks Shop. 5 spectators would be killed when the tornado unexpectedly struck the area. 17 others were injured. The tornado briefly crossed into Minnesota before lifting.
 
|-
 
| bgcolor="#{{storm colour|cat2}}" |<font color="black"> EF2 </font>
 
| bgcolor="#{{storm colour|cat2}}" |<font color="black"> EF2 </font>
 
|NE of Gary
 
|NE of Gary
Line 132: Line 130:
 
|2.2
 
|2.2
 
|
 
|
  +
|
 
|}
 
| bgcolor="#{{storm colour|Storm}}" |<font color="black"> EF0 </font>
 
| bgcolor="#{{storm colour|Storm}}" |<font color="black"> EF0 </font>
 
| bgcolor="#{{storm colour|Storm}}" |<font color="black"> EF0 </font>
 
| bgcolor="#{{storm colour|Storm}}" |<font color="black"> EF0 </font>

Revision as of 23:01, 28 July 2020

July 4, 2021 Tornado Outbreak
The Gary, South Dakota Tornado.
Type: Unknown
Active: July 4, 2021
Duration of tornado outbreak1: 5 hours
Maximum rated tornado2: EF4 tornado
Highest winds 180 mph (394 km/h)
(Gary, South Dakota)

Tornadoes confirmed: 12
Damage: ~$500 Million
Injuries: 157
Fatalities: 15
Areas affected: Northern Great Plains Region United States

1Time from first tornado to last tornado
2Most severe tornado damage; see Fujita scale

The July 4, 2021 Tornado Outbreak was an outbreak of tornadoes that effected portions of South Dakota and Minnesota. Over the course of the outbreak, 12 tornadoes would touchdown, including one EF4 that struck the town of Gary, South Dakota.

The outbreak was one of the most destructive in South Dakota history, with over $500 Million dollars in damages being done. 15 people would be killed in the outbreak, with 14 of those deaths being attributed to the Gary tornado, and 1 of those deaths being caused by the long-tracked Lake Cochrane EF2.

The July 4th outbreak was also notable for the time it struck. A majority of people in the area were celebrating the fourth of July when the tornadoes struck. The City of Gary had just ended their fireworks show when the EF4 tornado that would decimate the city struck. Many of the tornadoes casualties were people who were returning home from the show when the tornado struck.

Numerous media outlets would deem the outbreak as the "Fireworks Tornado Outbreak" due to it occurring on July Fourth when a large amount of fireworks shows were being held.


Synopsis

A moderately intense low pressure system would advance through the upper midwest along a cold front as warm, moist air would be ushered northwards from the Gulf of Mexico via a pressure stationed over the western Atlantic. Shear would be minimal in most places, however, and morning convection would prove to be a limiting factor. However, a narrow corridor of rather favorable conditions would setup in and around Deuel County, South Dakota, where localized levels of high shear, high CAPE, and plentiful amounts of lift and moisture would arise. The SPC would quickly identify this corridor, and would issue a localized Moderate risk of severe weather driven by 15% SIG tornado chances and 45% SIG hail parameters. As the day would advance, several supercells embedded within a QLCS would move through this corridor, and take advantage of the favorable conditions in place, producing several tornadoes; some of which would prove to be intense and even violent.

Tornadoes

Confirmed Tornadoes

June 17

Confirmed tornadoes by Enhanced Fujita Rating

Confirmed
Total
Confirmed
EF0
Confirmed
EF1
Confirmed
EF2
Confirmed
EF3
Confirmed
EF4
Confirmed
EF5
12 0 2 3 2 1 0



EF# Location County/ Parish state Time (UTC) Path length (mi) Max width (yd) Summary
238 6.2 520 A tornado of low 6.2 520 SE of Castlewood Hamlin, Deuel SD 1201-1207 1.27 142 A brief tornado did low end EF1 damage to a power pole along I-29 before abruptly lifting.
euel SD 1213-1216 1.6 109 A Bemis Deuel SD 1213-1216 1.6 109 A low end EF1 tornado impacted the small hamlet of Bemis. The tornado's rather irregular motion (It first began to move east north east, before shifting south east, and then east) saved a majority of Bemis from a direct hit. 1 injury was reported, although it was determined to be rather minor.
142 A brief EF0 tornado was d SW Clear Lake Deuel SD 1214-1217 1.2 142 A brief EF0 tornado was documented by storm chasers southwest of Clear Lake. The tornado remained over open fields for the entirety of its life.
nado of low end EF3 intensity im N of Altamont to E of Lake Ali N of Altamont to E of Lake Alice Deuel SD 1227-1238 6.2 520 A tornado of low end EF3 intensity impacted farmsteads around Lake Alice before quickly dissipating north Lone Tree Lake. injuries were documented.
ection on this Tornado E of Clear Lake to E of Gary Deuel, Yellow Medicine, Lac Qui Parle SD, MN 1229-1248 10.2 740 See Section on this Tornado
EF2 W of Lake Cochrane to SE of Gary Deuel, Yellow Medicine SD, MN 1234-1249 7.5 500 See Section on this Tornado
EF1 NE of Lake Alice to SD/MN Stateline Deuel, Lac Qui Parle SD, MN 1246-1254 3 710 5 fatalities - A fairly short lasting yet wide and fairly intense tornado developed over the vast farm fields of northern Deuel County, before striking the Dixie Fireworks Shop along US 221 as EF1 strength. At the time, a large fireworks show was being held at the Dixie Fireworks Shop. 5 spectators would be killed when the tornado unexpectedly struck the area. 17 others were injured. The tornado briefly crossed into Minnesota before lifting.
EF2 NE of Gary Yellow Medecine MN 1252-1257 2.2

| bgcolor="#c0c0c0" | EF0 | bgcolor="#c0c0c0" | EF0 | bgcolor="#c0c0c0" | EF0 | bgcolor="#c0c0c0" | EF2 |}