Heavy to Excessive Rainfall in Montana; Bering Sea Low to Bring Impacts to Southwest Alaska

Heavy to excessive rainfall is forecast across portions of Montana Wednesday, along with an isolated flash flooding threat. A Slight Risk of Excessive Rainfall (level 2 of 4) is in effect for central Montana. A Bering Sea low will continue to bring strong winds, moderate to heavy rainfall, and high seas to southwest Alaska. A North Pacific Low may impact southwest Alaska at the end of the week. Read More >

Overview

A Mesoscale Convective System (MCS) tracked across areas from eastern Iowa into western Ohio Sunday night and Monday morning, July 14-15, 2024. This caused an extensive area of wind damage across areas mainly north of I-74 in Illinois, along with five tornadoes in Marshall County.

Map of storm reports ending 7 am Monday, July 15

Storm reports through 7 am Monday, July 15

Tornado
Wind & Hail

Tornadoes

Henry Tornado
MARSHALL COUNTY

Date	7/14/2024
Time (Local)	11:40 pm to 11:42 pm
EF Rating	EF1
Est. Peak Winds	90 mph
Path Length	0.45 miles
Max Width	50 yards
Injuries/Deaths	None
Summary: This short tornado impacted a mobile home park north of Henry. Mostly straight line wind damage occurred, with hardwood trees snapped 1/3 the way up, but mostly facing same direction. A handful of softwood trees were uprooted but positioned cyclonically. Heavy damage occurred to some but not all trailers, mostly via hardwood debris and straight-line wind.

Track Map

Downloadable KMZ File


Damage to trailers north of Henry	Damage to trailers north of Henry	Damage to trailers north of Henry	Caption

Lake Wildwood Tornado
MARSHALL COUNTY

Date	7/14/2024
Time (Local)	11:42 pm to 11:45 pm
EF Rating	EF1
Est. Peak Winds	100 mph
Path Length	6.33 miles
Max Width	100 yards
Injuries/Deaths	None
Summary: This tornado touched down just east of the Illinois River, near the north edge of Billsbach Lake, and tracked southeast. Extensive tree damage occurred near Lake Wildwood.

Track Map

Downloadable KMZ File


Tree damage near the start of tornado	Tree damage on Tax School Rd	Tree snapped near Lake Wildwood	Branches down near the end of the track

Lacon Tornado
MARSHALL COUNTY

Date	7/15/2024
Time (Local)	12:10 am to 12:11 am
EF Rating	EF-1
Est. Peak Winds	100 mph
Path Length	1.9 miles
Max Width	50 yards
Injuries/Deaths	None
Summary: The tornado touched down in a farm field near the intersection of Hickory Grove Rd and Washburn Rd. It progressed southeast and snapped off a row of large pine trees and damaged an outbuilding. It then moved southeast through another field before dissipating near the intersection of county roads 400 North and 1600 East.

Track Map

Downloadable KMZ File

Varna Tornadoes
MARSHALL COUNTY

Date	7/14/2024
Time (Local)	11:48 pm to 11:49 pm
EF Rating	EF-Unknown
Est. Peak Winds	N/A
Path Length	Tornado 1: 0.77 mi. Tornado 2: 0.63 mi.
Max Width	60 yards
Injuries/Deaths	None
Summary: Sentinel satellite data showed two tornado tracks northeast of Varna, generally east of county road 2350E and near county road 800N. Toward the end of the eastern track, an enhanced area of wind damage was seen in a corn field just west of the intersection of 800N and 2500E.

Track Map

Downloadable KMZ File

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

Wind & Hail:

Add a written summary or simply an LSR map in this section. If writing an extensive report, you can break the report down into wind and hail below (otherwise delete).

Wind

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Hail

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Heavy to Excessive Rainfall in Montana; Bering Sea Low to Bring Impacts to Southwest Alaska

Five Tornadoes in Marshall County on July 14-15, 2024