Tornado outbreak sequence of June 20–23, 1957

Last updated
Tornado outbreak sequence of June 20–23, 1957
Damage from Fargo tornado, 1957.jpg
Remains of homes destroyed by the F5 tornado in Fargo.
Type Tornado outbreak sequence
DurationJune 20–23, 1957
Highest winds
  • 115 mph (185 km/h)
    (Downtown Kansas City)
Lowest pressure998  mb (29.47  inHg)
Tornadoes
confirmed
23
Max. rating1 F5 tornado
Duration of
tornado outbreak2
4 days
Largest hail4.5 in (11 cm)
(northeast of Fort Stockton, Texas)
Fatalities11 fatalities, 105 injuries
Damage$25.883 million (1957 USD) [1]
Areas affected Great Plains, Great Lakes

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

A deadly and destructive outbreak sequence [nb 1] of 23 tornadoes struck parts of the Great Plains and the Great Lakes in late-June 1957. At least seven significant tornadoes (F2+) touched down during the outbreak sequence. The most devastating storm was a large, violent, and catastrophic 500-yard-wide F5 tornado family that struck Fargo, North Dakota on Thursday, June 20, 1957, killing 10 people and becoming the deadliest tornado ever recorded in North Dakota. The outbreak caused 11 fatalities, 105 injuries, and $25.883 million in damage.

Contents

Meteorological Synopsis

On June 20, 1957, a combination of strong instability and vertical wind shear, high storm-relative helicity (SRH), favorable storm-relative flow (SRF), and lowered lifted condensation levels (LCLs) set up over the High Plains. Boundary-layer moisture was also present, which was enhanced via evapotranspiration (ET) and moisture convergence. A shortwave ridge then centered itself over the region and, despite only modest forcing, a trough spawned a low-pressure area over Southwestern North Dakota. It then moved northeastward into the central part of the state, where temperatures and dewpoints were in the lower 80s and lower 70s respectfully. Although bulk shear was not quite high enough to support long-tracked supercells, meteorologist did indicate that an outbreak of severe thunderstorms along with a significant to violent tornado or two was possible.

That afternoon, a thunderstorm complex over Devil's Lake, North Dakota produced an outflow boundary that further enhanced the low-level convergence zone in Eastern North Dakota and Western Minnesota. An isolated supercell formed in the warm sector of the low pressure system and took advantage of this favorable environment, dropping five tornadoes, including the F5 tornado in Fargo (although the tornado family has been listed as one tornado). Four other tornadoes were confirmed on that day, although most were brief, but some were strong as well. [3]

Confirmed tornadoes

Confirmed tornadoes by Fujita rating
FUF0F1F2F3F4F5Total
097510123

June 20 event

Confirmed tornadoes – Thursday, June 20, 1957 [nb 2] [nb 3]
F# LocationCounty / ParishStateStart
coord.
Time (UTC)Path lengthMax. widthSummary
F2S of Oake Dickey ND 46°06′N98°06′W / 46.1°N 98.1°W / 46.1; -98.1 (Oake (June 20, F2)) 00:30–?2 miles (3.2 km)30 yards (27 m)Damages were estimated at $25,000 (1957 USD). Tornado researcher Thomas P. Grazulis did not list this tornado as an F2 or stronger. [5] [6]
F0SSE of Warren Cass ND 46°42′N97°00′W / 46.7°N 97°W / 46.7; -97 (Warren (June 20, F0)) 00:30–?0.1 miles (0.16 km)10 yards (9.1 m)Brief tornado occurred southwest of Fargo, North Dakota with little to no damage. [7]
F5 Wheatland, ND to Fargo, ND to S of Winnipeg Junction, MN Cass (ND), Clay (MN) ND, MN 46°54′N97°21′W / 46.9°N 97.35°W / 46.9; -97.35 (Wheatland (June 20, F5)) 00:40–04:1052.4 miles (84.3 km)500 yards (460 m)10 deaths – See article on this tornado – Later analysis has determined that this was a family of at least five tornadoes. The death toll may be 12. 103 people were injured and damages were estimated at $25.250 million (1957 USD). [8] [9] [10] [11]
F0Southern Fergus Falls Otter Tail MN 46°16′N96°05′W / 46.27°N 96.08°W / 46.27; -96.08 (Bernice (June 20, F0)) 01:30–?0.1 miles (0.16 km)10 yards (9.1 m)The amount of damage is unknown. [12]
F2WNW of Ashton Spink SD 45°01′N98°38′W / 45.02°N 98.63°W / 45.02; -98.63 (Ashton (June 20, F2)) 04:00–?0.1 miles (0.16 km)10 yards (9.1 m)1 death – A mobile home, four barns, and a residence were destroyed or unroofed. Damages were estimated at $25,000 (1957 USD). [13] [11]

June 21 event

List of confirmed tornadoes – Friday, June 21, 1957 [nb 2] [nb 3]
F# LocationCounty / ParishStateStart
coord.
Time (UTC)Path lengthMax. widthSummary
F1SSW of Holyoke Yuma CO 40°24′N102°27′W / 40.4°N 102.45°W / 40.4; -102.45 (Holyoke (June 21, F1)) 08:15–?0.1 miles (0.16 km)10 yards (9.1 m)Damages were estimated at $2,500 (1957 USD). [14]
F3 Waco to Utica York NE 40°54′N97°28′W / 40.9°N 97.47°W / 40.9; -97.47 (Waco (June 21, F3)) 00:15–?5.4 miles (8.7 km)10 yards (9.1 m)An intense tornado moved eastward between the towns of Waco and Utica, destroying or damaging barns and outbuildings on 16 farms. Damages was estimated at $250,000 (1957 USD). Downbursts produced a 3- mile -wide (4.8  km ) swath of damage as well. Grazulis classified the tornado as an F2. [15] [16]
F1 Bellwood Butler NE 41°21′N97°19′W / 41.35°N 97.32°W / 41.35; -97.32 (Bellwood (June 21, F1)) 00:30–?1 mile (1.6 km)100 yards (91 m)Damages were estimated at $250 (1957 USD). [17]
F0Northern Valparaiso Saunders NE 41°06′N96°50′W / 41.10°N 96.83°W / 41.10; -96.83 (Northern Valparaiso (June 21, F0)) 00:52–?0.1 miles (0.16 km)10 yards (9.1 m)Damages were estimated at $30 (1957 USD). [18]
F0ESE of Norway Republic KS 39°42′N97°45′W / 39.70°N 97.75°W / 39.70; -97.75 (Norway (June 21, F0)) 02:00–?0.1 miles (0.16 km)10 yards (9.1 m)The amount of damage is unknown. [19]
F1Western Hutchinson Reno KS 38°04′N97°59′W / 38.07°N 97.98°W / 38.07; -97.98 (Western Hutchison (June 21, F1)) 03:14–?0.1 miles (0.16 km)10 yards (9.1 m)A trucking terminal was unroofed and a man may have been killed as a result. Widespread downbursts obscured the distinction between tornado and downburst damage and damage estimates are unknown as well. Grazulis classified the tornado as an F2. [20]
F0NNW of Benton to ESE of Hurley Sedgwick KS 37°50′N97°09′W / 37.83°N 97.15°W / 37.83; -97.15 (Benton (June 21, F0)) 04:09–?2.3 miles (3.7 km)100 yards (91 m)Tornado caused $2,500 (1957 USD) in damage to farmlands. [21]
F1E of De Soto to Zarah to S of Lake Quivera Johnson KS 38°59′N94°56′W / 38.98°N 94.93°W / 38.98; -94.93 (De Soto (June 21, F1)) 05:30–?9 miles (14 km)400 yards (370 m)A destructive tornado moved directly through Zarah, west of Shawnee in the western suburbs of Kansas City. It injured two people and caused $250,000 (1957 USD) in damage. [22]

June 22 event

Confirmed tornadoes – Saturday, June 22, 1957 [nb 2] [nb 3]
F# LocationCounty / ParishStateStart
coord.
Time (UTC)Path lengthMax. widthSummary
F2Southern Kansas City to Birmingham to Liberty Jackson MO 39°00′N94°35′W / 39°N 94.58°W / 39; -94.58 (Southern Kansas City (June 22, F2)) 06:00–?19.8 miles (31.9 km)10 yards (9.1 m)A strong tornado moved through the eastern side of Kansas City, causing $250 (1957 USD) in damage. [23]
F0 Southern Albert Lea Freeborn MN 43°37′N93°22′W / 43.62°N 93.37°W / 43.62; -93.37 (Southern Albert Lea (June 22, F0)) 16:00–?0.1 miles (0.16 km)10 yards (9.1 m)A brief tornado caused little to no damage. [24]
F2 Hudsonville Ottawa MI 42°52′N85°52′W / 42.87°N 85.87°W / 42.87; -85.87 (Hudsonville (June 22, F2)) 21:30–?0.1 miles (0.16 km)10 yards (9.1 m)Major damage occurred in Downtown Hudsonville from this brief, but strong tornado. Businesses and homes were damaged or destroyed and trees were downed. Damage was estimated at $25,000 (1957 USD). This came just over one year after an F5 tornado caused major damage on the south side of town. [25]
F1 Eau Claire to SW of Decatur Ottawa, Cass MI 41°59′N86°18′W / 41.98°N 86.3°W / 41.98; -86.3 (Eau Claire (June 22, F1)) 22:05–?10.7 miles (17.2 km)50 yards (46 m)This tornado moved directly through Eau Claire, causing $25,000 (1957 USD) in damage. [26]
F0 Dumont Lake Allegan MI 42°36′N85°52′W / 42.6°N 85.87°W / 42.6; -85.87 (Dumont Lake (June 22, F0)) 22:10–?1 mile (1.6 km)10 yards (9.1 m)Weak tornado passed near Dumont Lake, causing $30 (1957 USD) in damage. [27]
F2 Southwestern Bay City Bay MI 43°35′N83°55′W / 43.58°N 83.92°W / 43.58; -83.92 (Bay City (June 22, F2)) 00:00–?0.1 miles (0.16 km)10 yards (9.1 m)Brief, but strong tornado caused heavy destruction southwest of Bay City, totaling $25,000 (1957 USD) in damage. [28]
F1SSW of Campo Baca CO 37°04′N102°40′W / 37.07°N 102.67°W / 37.07; -102.67 (Campo (June 22, F1)) 03:00–?0.1 miles (0.16 km)10 yards (9.1 m)Brief tornado touchdown in the West Ute Canyon, causing $250 (1957 USD) in damage. [29]
F0N of Denver City to S of Plains Yoakum TX 33°04′N102°50′W / 33.07°N 102.83°W / 33.07; -102.83 (Denver City (June 22, F0)) 04:00–?0.1 miles (0.16 km)10 yards (9.1 m)Little to no damage occurred. [30]
F1 Finney Hale TX 34°17′N101°42′W / 34.28°N 101.7°W / 34.28; -101.7 (Finney (June 22, F1)) 04:18–?0.5 miles (0.80 km)10 yards (9.1 m)A tornado struck the town of Finney north of Plainview and Seth Ward, causing $2,500 (1957 USD) damage. [31]

June 23 event

Confirmed tornadoes – Sunday, June 23, 1957 [nb 2] [nb 3]
F# LocationCounty / ParishStateStart
coord.
Time (UTC)Path lengthMax. widthSummary
F0 Copeland Gray KS 37°33′N100°37′W / 37.55°N 100.62°W / 37.55; -100.62 (Copeland (June 21, F0)) 08:15–?0.1 miles (0.16 km)10 yards (9.1 m)Tornado touched down just northeast of Copeland, barely missing the town and causing little to no damage. [32]

Wheatland—Fargo, North Dakota/Moorhead–Hawley, Minnesota Tornado Family

  1. An outbreak is generally defined as a group of at least six tornadoes (the number sometimes varies slightly according to local climatology) with no more than a six-hour gap between individual tornadoes. An outbreak sequence, prior to (after) the start of modern records in 1950, is defined as a period of no more than two (one) consecutive days without at least one significant (F2 or stronger) tornado. [2]
  2. 1 2 3 4 All dates are based on the local time zone where the tornado touched down; however, all times are in Coordinated Universal Time and dates are split at midnight CST/CDT for consistency.
  3. 1 2 3 4 Prior to 1994, only the average widths of tornado paths were officially listed. [4]

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    Wheatland—Fargo, North Dakota/Moorhead–Hawley, Minnesota Tornado Family