Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Overview ***Preliminary***

During the late afternoon and evening of June 11, 2018, thunderstorms developed near the surface low pressure system over Dodge county and ahead of a cold front that moved through in eastern Nebraska and a warm front that trailed southeast into western Iowa. In-between these fronts, there appeared to be a pre-frontal boundary that was northeast of Lincoln and west of Plattsmouth. Six confirmed tornadoes, large hail to baseball size and damaging winds accompanied the storms.

Tornadoes

Tornadoes:

Tornado #1 Near Louisville
CASS COUNTY NE

Date	June 11, 2018
Time (Local)	TBD
EF Rating	EF-0
Est. Peak Winds	60 MPH
Path Length	0.1 miles
Max Width	10 yards
Injuries/Deaths	0/0
Summary: Very brief spin up catured on video that did not seem to cause any damage.

Track Map

Tornado #2 Between Louisville/Murray North
CASS COUNTY NE

Date	June 11, 2018
Time (Local)	TBD
EF Rating	EF-0
Est. Peak Winds	75 MPH
Path Length	TBD
Max Width	40 yards
Injuries/Deaths	0/0
Summary: Brief tornado caused damage to trees and minor damage to a building at a rural home location. Also caused damage at a nearby home location where a couple of buildings and trees received damage. Additional data analysis will be needed because this may have been two separate weak tornadoes.

Track Map

Tornado #3 Between Louisville/Murray South
CASS COUNTY NE

Date	June 11, 2018
Time (Local)	TBD
EF Rating	EF-0
Est. Peak Winds	70 MPH
Path Length	TBD
Max Width	20 yards
Injuries/Deaths	0/0
Summary: A brief tornado caused damage to trees. Path length narrow and crops in the area did not show signs of straight line wind damage.

Track Map

Tornado #4 McPaul/West of Thurman
FREMONT COUNTY IA

Date	June 11, 2018
Time (Local)	6:59-7 PM CDT
EF Rating	EF-0
Est. Peak Winds	82 MPH
Path Length	0.1 miles
Max Width	10 yards
Injuries/Deaths	0/0
Summary: Moderate twisting and tearing of tree tops. Several large tree limbs downed from oak and elm trees. Empty tractor trailer moved from mooring blocks. Small, short-lived tornado embedded in broader area of straight-line wind damage.

Track Map

Tornado #5 Elk Creek
JOHNSON COUNTY NE

Date	June 11, 2018
Time (Local)	8:00 - 8:01 PM CDT
EF Rating	EF-0
Est. Peak Winds	72 MPH
Path Length	.1 miles
Max Width	10 yards
Injuries/Deaths	0/0
Summary: Short-lived tornado touched down in pastureland. Slight damage to hardwood trees.

Track Map

Tornado #6 Near Steinauer/Table Rock
PAWNEE COUNTY NE

Date	June 11, 2018
Time (Local)	8:05 PM CDT
EF Rating	EF-0
Est. Peak Winds	74 MPH
Path Length	0.0 miles
Max Width	10 yards
Injuries/Deaths	0/0
Summary: Short-lived tornado touched down in pastureland. Slight damage to hardwood trees.

Track Map

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

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Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

At Least Six Confirmed Tornadoes - June 11, 2018