Flash Flooding and Hail in Tennessee, July 30, 2024

Name: Flash Flooding and Hail in Tennessee, July 30, 2024
Start: 2024-07-30T06:15
End: 2024-07-30T18:00
Location: Tennessee

July 30, 2024 · NWS MRX · 43 events in 20 counties and zones

An upper level shortwave coupled with strong wind fields brought multiple rounds of severe weather to East Tennessee, including two mesoscale convective systems. Flash flooding occurred in Knox county.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 43

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS MRX wrote it up.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Morristown, TN wrote its last area forecast discussion before the first event at Jul 30, 6:13 AM EST, 2 minutes earlier.

Area forecast discussion, Jul 30, 6:13 AM EST, 2 minutes before

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Hazardous weather outlook, Jul 30, 2:49 AM EST, 3 hours 26 minutes before

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In the hours before

Special weather statement, Jul 30, 5:23 AM EST, 52 minutes before

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The radar

The Knoxville radar (KMRX), 45 km away, was scanning. The volume nearest the first event began at 11:17 UTC.

Open the radar archive at this moment

Event by event

34 thunderstorm wind, 7 flash flood, 2 hail. Local standard time, as filed.

Thunderstorm Wind, Hancock

When: July 30, 6:15 AM EST
Where: Hancock County, 0.89 mi NE of Sneedville
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 36.540, -83.210

Several trees were blown down by powerful thunderstorm wind gusts.

Thunderstorm Wind, Hawkins

When: July 30, 6:30 AM EST
Where: Hawkins County, 0.89 mi NW of Rogersville
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 36.410, -83.010

Several trees were blown down by severe thunderstorm winds.

Thunderstorm Wind, Roane

When: July 30, 2:00 PM EST
Where: Roane County, Clacks Gap
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 35.950, -84.450

A couple of trees were blown down by powerful thunderstorm wind gusts.

Thunderstorm Wind, Knox

When: July 30, 2:00 PM EST
Where: Knox County, 0.56 mi W of Byington
Measured: 52 kt (60 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 35.970, -84.130

A large tree was felled by powerful thunderstorm winds on top of powerlines in Knoxville.

Thunderstorm Wind, Knox

When: July 30, 2:20 PM EST
Where: Knox County, 0.56 mi W of Knoxville
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 35.970, -83.940

Several trees were blown down across the county by severe thunderstorm wind gusts.

Thunderstorm Wind, Knox

When: July 30, 2:22 PM EST
Where: Knox County, 1.49 mi NNE of Fountain City
Measured: 52 kt (60 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 36.050, -83.920

Several large trees were uprooted by severe thunderstorm winds and blocked traffic.

Thunderstorm Wind, Knox

When: July 30, 2:25 PM EST
Where: Knox County, 0.89 mi NE of Fountain City
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 36.040, -83.920

Multiple trees sustained significant damage or were entirely blown over by severe thunderstorm wind gusts. Damage was concentrated within the immediate neighborhood.

Thunderstorm Wind, Jefferson

When: July 30, 3:01 PM EST
Where: Jefferson County, 0.69 mi S of Friends Station
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 36.090, -83.580

Multiple trees between New Market and Strawberry Plains were blown down by severe thunderstorm wind gusts.

Flash Flood, Knox

When: July 30, 3:09 PM EST to 4:30 PM EST
Where: Knox County, 0.89 mi SE of Ridgedale to 0.7 mi SE of Ridgedale
Cause: Heavy Rain
Reported by: Trained Spotter
Coordinates: 35.970, -84.020

Flooding of streets and sidewalks at intersection of Saint Lucia Lane and McKamey Road. Road nearly impassable.

Flash Flood, Knox

When: July 30, 3:14 PM EST to 4:00 PM EST
Where: Knox County, 0.2 mi S of Bearden to 0.2 mi WNW of Bearden
Cause: Heavy Rain
Reported by: Trained Spotter
Coordinates: 35.927, -84.000

Water flowing over roads at the intersection of Walden Drive and Agnes Road, and at the intersection of Walden Drive and Baun Drive.

Thunderstorm Wind, Loudon

When: July 30, 3:15 PM EST
Where: Loudon County, 0.89 mi NW of Loudon
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 35.740, -84.360

Multiple trees were blown down in and around Loudon by severe thunderstorm wind gusts.

Thunderstorm Wind, Jefferson

When: July 30, 3:20 PM EST
Where: Jefferson County, 0.89 mi NE of Jefferson City
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 36.130, -83.470

Several large trees were blown down or sustained damage from severe thunderstorm winds in Jefferson City.

Flash Flood, Knox

When: July 30, 3:20 PM EST to 4:30 PM EST
Where: Knox County, 1 mi WNW of Bearden to 0.8 mi NNW of Bearden
Cause: Heavy Rain
Reported by: Broadcast Media
Coordinates: 35.935, -84.016

Flooding of Papermill Drive outside the studios of WVLT.

Thunderstorm Wind, Blount

When: July 30, 3:25 PM EST
Where: Blount County, 0.89 mi SE of Amerene
Measured: 52 kt (60 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 35.760, -83.890

Powerlines were blown down across a local highway by severe thunderstorm wind gusts.

Thunderstorm Wind, Jefferson

When: July 30, 3:25 PM EST
Where: Jefferson County, 0.89 mi SE of Hickory
Measured: 52 kt (60 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 36.040, -83.640

Multiple trees were blown down by severe thunderstorm winds.

Thunderstorm Wind, Loudon

When: July 30, 3:30 PM EST
Where: Loudon County, 0.56 mi W of Jena
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 35.650, -84.180

Multiple trees were blown down by severe thunderstorm wind gusts in and around Greenback.

Thunderstorm Wind, Jefferson

When: July 30, 3:30 PM EST
Where: Jefferson County, 0.89 mi SE of Willardtown
Measured: 52 kt (60 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 36.020, -83.570

Several trees were blown down by powerful thunderstorm wind gusts.

Hail, Campbell

When: July 30, 3:38 PM EST
Where: Campbell County, 0.89 mi NE of Caryville
Measured: 1 in hail
Reported by: Public
Coordinates: 36.310, -84.210

Thunderstorm Wind, Campbell

When: July 30, 3:40 PM EST
Where: Campbell County, 0.89 mi NE of De Lap
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 36.360, -84.140

Several large trees were felled by severe thunderstorm winds and took out multiple powerlines in La Follette.

Thunderstorm Wind, Anderson

When: July 30, 3:50 PM EST
Where: Anderson County, 0.89 mi NE of Norris
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 36.210, -84.060

Several trees were blown down by severe thunderstorm wind gusts.

Hail, Monroe

When: July 30, 4:00 PM EST
Where: Monroe County, 1.78 mi NE of East Sweetwater
Measured: 1 in hail
Reported by: Public
Coordinates: 35.620, -84.400

Thunderstorm Wind, Union

When: July 30, 4:00 PM EST
Where: Union County, 2.76 mi N of New Loyston
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 36.270, -83.920

Several trees were blown down by powerful thunderstorm wind gusts in Big Ridge State Park.

Thunderstorm Wind, Claiborne

When: July 30, 4:00 PM EST
Where: Claiborne County, 1.49 mi NNW of Russell Mill
Measured: 52 kt (60 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 36.470, -83.860

Several trees were blown down by powerful thunderstorm wind gusts.

Thunderstorm Wind, Knox

When: July 30, 4:05 PM EST
Where: Knox County, 0.89 mi NW of Beverly
Measured: 61 kt (70 mph) estimated gust
Reported by: Public
Coordinates: 36.040, -83.910

Several large diameter trees were snapped at the trunk by severe thunderstorm wind gusts along with a large diameter branch from a separate tree.

Thunderstorm Wind, Rhea

When: July 30, 4:11 PM EST
Where: Rhea County, 0.89 mi SW of Lorraine
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 35.710, -84.840

Thunderstorm outflow winds, with no active storm present, brought down most of a large tree in Spring City.

Thunderstorm Wind, Monroe

When: July 30, 4:15 PM EST
Where: Monroe County, Sweetwater
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 35.600, -84.470

Several trees were blown down east of Sweetwater by severe thunderstorm wind gusts.

Flash Flood, Knox

When: July 30, 4:16 PM EST to 5:15 PM EST
Where: Knox County, 0.2 mi N of Lyons View to 0.5 mi NNW of Lyons View
Cause: Heavy Rain
Reported by: Trained Spotter
Coordinates: 35.923, -84.000

Moderate flooding on Northshore Drive at the entrance to the Knoxville Catholic Diocese.

Flash Flood, Knox

When: July 30, 4:23 PM EST to 5:30 PM EST
Where: Knox County, 1.31 mi WNW of Arlington to 1.35 mi E of Powell
Cause: Heavy Rain
Reported by: Amateur Radio
Coordinates: 36.010, -83.970

Flooding at I-75 exits 108 Merchants Drive and 110 Callahan.

Thunderstorm Wind, Union

When: July 30, 4:25 PM EST
Where: Union County, 1.49 mi SSW of Luttrell
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 36.180, -83.740

Multiple trees were felled across a driveway by severe thunderstorm winds.

Thunderstorm Wind, Bledsoe

When: July 30, 3:30 PM CST
Where: Bledsoe County, 0.69 mi N of Ninemile
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 35.710, -85.100

Multiple trees were blown down by severe thunderstorm winds in the northern portions of the county.

Thunderstorm Wind, Rhea

When: July 30, 4:30 PM EST
Where: Rhea County, 0.89 mi SE of Morgantown
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 35.490, -85.010

Several trees were blown down by severe thunderstorm wind gusts.

Flash Flood, Knox

When: July 30, 4:30 PM EST to 5:15 PM EST
Where: Knox County, 0.89 mi NW of Park City to 0.7 mi NW of Park City
Cause: Heavy Rain
Reported by: Fire Department/Rescue
Coordinates: 35.980, -83.910

Motorist rescued from car stalled in flood waters on Fifth Avenue.

Thunderstorm Wind, Sequatchie

When: July 30, 3:34 PM CST
Where: Sequatchie County, 2.64 mi ESE of Cagle
Measured: 52 kt (60 mph) measured gust
Reported by: Trained Spotter
Coordinates: 35.450, -85.430

A well trained observer measured a severe thunderstorm wind gust.

Thunderstorm Wind, Jefferson

When: July 30, 4:40 PM EST
Where: Jefferson County, 0.56 mi W of Jefferson City
Measured: 61 kt (70 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 36.120, -83.490

Numerous trees were felled by severe thunderstorm winds across the county, with 15 roads with lane closures, and at least one road closed from multiple trees blocking the road.

Thunderstorm Wind, Grainger

When: July 30, 4:40 PM EST
Where: Grainger County, 0.89 mi NW of Bean Station
Measured: 52 kt (60 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 36.340, -83.290

Several trees were blown down by severe thunderstorm wind gusts.

Thunderstorm Wind, McMinn

When: July 30, 4:50 PM EST
Where: McMinn County, Athens
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 35.450, -84.600

Multiple trees and powerlines were blown down from Athens to the northern portions of the county by severe thunderstorm wind gusts.

Flash Flood, Monroe

When: July 30, 4:55 PM EST to 6:00 PM EST
Where: Monroe County, 1 mi E of Madisonville to 1 mi SSE of Madisonville
Cause: Heavy Rain
Reported by: 911 Call Center
Coordinates: 35.520, -84.352

Several streets were flooded in Madisonville.

Thunderstorm Wind, Bradley

When: July 30, 5:02 PM EST
Where: Bradley County, 0.89 mi NE of Annadale
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 35.180, -84.890

A large tree was felled by severe thunderstorm winds and caused some damage to a home.

Thunderstorm Wind, Hamilton

When: July 30, 5:05 PM EST
Where: Hamilton County, 0.69 mi S of Hamillville
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 35.120, -85.230

A large tree was felled by severe thunderstorm winds near Chickamauga Dam.

Thunderstorm Wind, Hamilton

When: July 30, 5:05 PM EST
Where: Hamilton County, 0.68 mi SE of Harrison
Measured: 52 kt (60 mph) estimated gust
Reported by: Social Media
Coordinates: 35.114, -85.140

A large tree and powerlines were blown down by severe thunderstorm wind gusts in Harrison.

Thunderstorm Wind, Bradley

When: July 30, 5:15 PM EST
Where: Bradley County, 0.89 mi NE of Cleveland
Measured: 52 kt (60 mph) estimated gust
Reported by: Amateur Radio
Coordinates: 35.180, -84.870

Multiple trees and powerlines were blown down in Cleveland and across the county by severe thunderstorm wind gusts.

Thunderstorm Wind, Hamilton

When: July 30, 5:16 PM EST
Where: Hamilton County, 0.69 mi N of (Cha)lovell Fld Chat
Measured: 54 kt (62 mph) measured gust
Reported by: ASOS
Coordinates: 35.040, -85.200

The NWS weather instrument at Chattanooga Airport recorded a 62 mph wind gust during passage of severe thunderstorms.

Thunderstorm Wind, Polk

When: July 30, 5:23 PM EST
Where: Polk County, Farner
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 35.150, -84.320

Multiple trees were blown down by severe thunderstorm wind gusts in Farner.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Tennessee in 2024 Every state in 2024 This day in weather history Warnings in Tennessee, July 2024

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 1191408, 1191409, 1191413, 1191419, 1191410, 1191414, 1191424, 1191412, 1206839, 1206840, 1191416, 1191421, 1206841, 1191420, 1191422, 1191417, 1191423, 1191406, 1191418, 1191427, 1191407, 1191428, 1191448, 1191432, 1191438, 1191433, 1206842, 1206843, 1191444, 1191429, 1191431, 1206844, 1191434, 1191440, 1191447, 1191437, 1206845, 1191441, 1191445, 1191449, and more.