Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Overview

A line of showers and thunderstorms developed in the early morning hours of February 10, 2024, ahead of a cold front in an environment that had very strong shear but little instability. The storms, mainly in southern Indiana and portions of north-central Kentucky, ended up morphing into a convective line that produced both wind damage and isolated tornadoes before weakening and pushing east of the region by sunrise. A total of two small, short-lived EF-1 tornadoes developed with the line.

Tornado
Wind
Photos & Video
Radar
Environment

Tornadoes:

Tornado - Underwood, IN
CLARK COUNTY

Date	February 10, 2024
Time (Local)	4:49-4:50 AM EST
EF Rating	EF-1
Est. Peak Winds	90 mph
Path Length	1.0 mile
Max Width	75 yards
Injuries/Deaths	0/0
Summary: An EF-1 tornado touched down just south of Underwood, Indiana and was on the ground for one mile with a maximum width of 75 yards and wind speed of 90 mph. The tornado began on the shoulder of Interstate 65, struck the south end of Henretty Road, and lifted just east of US 31. Damage was done to trees, barns, and one home. More...

Track Map

Downloadable KMZ File

Tornado - Port Royal, KY
HENRY COUNTY

Date	February 10, 2024
Time (Local)	5:32-5:34 AM EST
EF Rating	EF-1
Est. Peak Winds	90 mph
Path Length	1.0 mile
Max Width	75 yards
Injuries/Deaths	0/0
Summary: An EF-1 tornado impacted the community of Port Royal, Kentucky. The tornado touched down east of Gullion Branch Road and caused scattered tree damage. The tornado then moved into the town of Port Royal and did more significant damage near Port Royal Road. A pole barn was completely destroyed and its debris was carried more than a quarter-mile to the east-northeast. Several other structures had roof and siding damage. Several trees were snapped or sheared apart, with roof debris wrapping around some of the trees. Tree debris was in a convergent pattern, with most of it pointing toward the southeast to northeast directions. Nearby vehicles had mud splatter from the tornado as it tore through that portion of town. One vehicle was lifted, moved several feet away, and rotated 90 degrees. The tornado impacted trees further east before lifting in a field, as damage could no longer be observed to the east using a drone. More...

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

Storm Damage Reports

Wind

Significant straight-line winds of 65-85 mph impacted portions of Washington and Clark counties in Indiana and Trimble County in Kentucky.


Straight-Line Wind Damage in eastern Washington County, Indiana	Straight-Line Wind Damage near Underwood, Indiana	Straight-Line Wind Damage near Marysville, Indiana	Straight-Line Wind Damage in Trimble County, Kentucky

Photos & Video

Underwood, IN EF-1 Tornado


EF-1 Tornado Damage (NWS Storm Survey)	EF-1 Tornado Damage (NWS Storm Survey)	EF-1 Tornado Damage (NWS Storm Survey)	EF-1 Tornado Damage (NWS Storm Survey)

Port Royal, KY EF-1 Tornado


EF-1 Tornado Damage (NWS Storm Survey)	EF-1 Tornado Damage (NWS Storm Survey)	EF-1 Tornado Damage (NWS Storm Survey)	Drone Imagery of Snapped Trees and Barn Debris (NWS Storm Survey)

Radar


KLVX 0.5° Base Reflectivity at 5 AM EST 2/10/2024	KLVX 0.5° Base Reflectivity and Storm Relative Velocity at 4:49 AM EST 2/10/2024	KLVX 0.5° Base Reflectivity, Storm Relative Velocity, Differential Reflectivity, and Correlation Coefficient at 4:50 AM EST 2/10/2024	KLVX 0.5° Base Reflectivity and Storm Relative Velocity at 5:32 AM EST 2/10/2024

Environment

All environmental parameters are from 09z (4 am EST) on February 10, 2024.


Figure 1: 300 mb	Figure 2: 500 mb	Figure 3: 700 mb


Figure 4: 850 mb	Figure 5: 925 mb	Figure 6: Surface chart


Figure 7: 850 mb Temperature Advection	Figure 8: Deep Layer Moisture Convergence	Figure 9: 925-850 mb Moisture Transport


Figure 10: Effective Bulk Shear (kts)	Figure 11: 0-1 km Shear	Figure 12: 0-3 km Shear


Figure 13: 0-1 km Storm Relative Helicity	Figure 14: MLCAPE and MLCIN	Figure 15: Most Unstable CAPE

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Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

February 10, 2024 Severe Weather