On the map: every storm report logged this day.
On the map
Storm reports for August 20, 2018
On August 20, 2018, 5 hail, 42 damaging-wind and 6 tornado reports were logged across 12 states.
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On August 20, 2018, 5 hail, 42 damaging-wind and 6 tornado reports were logged across 12 states. The largest hail reported was 1.25″ (half dollar size) in Quitman County, MS.
Storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Radar hail estimates start October 2019.
Storm reports by state
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| MS | 3 | 14 | 0 | 1.25″ |
| LA | 0 | 15 | 0 | – |
| AR | 1 | 4 | 2 | 0.75″ |
| IN | 1 | 4 | 0 | 1.00″ |
| AZ | 0 | 2 | 0 | – |
| IA | 0 | 0 | 1 | – |
| IL | 0 | 0 | 1 | – |
| MT | 0 | 0 | 1 | – |
| WI | 0 | 0 | 1 | – |
| FL | 0 | 1 | 0 | – |
| MN | 0 | 1 | 0 | – |
| TX | 0 | 1 | 0 | – |
Hail reports (5)
| Time (UTC) | Size | Location |
|---|---|---|
| 21:50 | 1.25″ | Quitman County, MS |
| 23:42 | 1.00″ | Panola County, MS |
| 00:15 | 1.00″ | Cass County, IN |
| 20:20 | 0.75″ | Faulkner County, AR |
| 21:37 | 0.75″ | Coahoma County, MS |
Damage, injuries and deaths
National Weather Service offices recorded about $1.1 million in property damage and 1 death from hail, thunderstorm wind and tornadoes across the US on this storm day (53 events in 12 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Union Parish, LA | 1 | 0 | 1 | – |
| Greene County, AR | 4 | 0 | 0 | $585,000 |
| Ashley County, AR | 1 | 0 | 0 | $300,000 |
| Monroe County, AR | 1 | 0 | 0 | $100,000 |
| Sunflower County, MS | 3 | 0 | 0 | $30,000 |
| Washington County, MS | 2 | 0 | 0 | $20,000 |
| Carroll County, IN | 1 | 0 | 0 | $15,000 |
| West Carroll Parish, LA | 1 | 0 | 0 | $15,000 |
| Walworth County, WI | 1 | 0 | 0 | $15,000 |
| Morehouse Parish, LA | 3 | 0 | 0 | $12,000 |
| Madison County, MS | 3 | 0 | 0 | $10,000 |
| Brazos County, TX | 1 | 0 | 0 | $10,000 |
What the National Weather Service wrote
- Union Parish, LA (near Rum Center) · Thunderstorm wind 64 mph · 1 death
“A large hardwood tree that was rotten on the interior portion of the trunk was blown onto a mobile home on Pilgrims Rest Church Road northwest of Spearsville (and about two miles south of the Arkansas state line), killing a 45 year old woman inside the home.” - Greene County, AR (near Finch) · Tornado EF1 · $500,000
“This tornado developed near County Road 714 and damaged two barns early in its path. The tornado uprooted or snapped trees along County Roads 714, 740, and 707. The tornado overturned a mobile home off of County Road 740 and destroyed a storage shed along County Road 707.” - Ashley County, AR (near Crossett) · Thunderstorm wind 75 mph · $300,000
“Widespread trees, large limbs, and power lines were down throughout the city, with the heaviest damage between Main and Cedar streets. There was minor roof damage to a few homes and other buildings, both due to wind and blown down trees.” - Monroe County, AR (near Brinkley) · Thunderstorm wind 75 mph · $100,000
“Several trees were blown down across Brinkley, one of which damaged a home. There was also damage to the roof of the elementary school.” - Greene County, AR (near Marmaduke) · Tornado EF0 · $50,000
“This tornado developed along Highway 34 east of Marmaduke. The tornado damaged a few trees and overturned and dragged a semi-trailer designed for carrying grain.” - Carroll County, IN (near Burlington) · Thunderstorm wind 70 mph · $15,000
“A barn roof was torn off, multiple large trees were downed, and a power line was down due to damaging thunderstorm wind gusts.”
Event narratives from NWS Storm Data, shortened. Up to six per day, chosen by deaths, injuries, damage and size.
Source: NOAA National Centers for Environmental Information (NCEI), Storm Events Database, as entered by National Weather Service offices; data through July 31, 2026. Damage is in dollars of the year, not adjusted for inflation.
NWS Tornado Damage Surveys for August 20, 2018
National Weather Service survey teams mapped 5 tornado paths from this storm day (5 EF0), 2 miles in all. The map above draws each surveyed path as the NWS mapped it, colored by the EF rating of each stretch, in place of the straight start-to-end line.
| Rating | Peak wind | Path length | Max width | Deaths / injuries | On the ground | Surveyed by |
|---|---|---|---|---|---|---|
| EF0 | 70 mph | 0.7 mi | 150 yd | 0 / 0 | 01:01–01:05 UTC | NWS Milwaukee |
| EF0 | 70 mph | 0.7 mi | 50 yd | 0 / 0 | 22:51–22:53 UTC | NWS Memphis |
| EF0 | 65 mph | 0.5 mi | 15 yd | 0 / 0 | 20:49–20:51 UTC | NWS Quad Cities |
| EF0 | 70 mph | 0.3 mi | 100 yd | 0 / 0 | 23:31–23:34 UTC | NWS Chicago |
| EF0 | 74 mph | 0.2 mi | – | 0 / 0 | 23:03 UTC | NWS Springfield, MO |
Source: NOAA National Weather Service Damage Assessment Toolkit (DAT): the tornado paths and EF-rating zones NWS survey teams mapped after each storm. Survey data are preliminary and can be revised; NOAA's official record is Storm Data (NCEI). Paths are simplified to about 30 m. Times are when the tornado was on the ground, in UTC.
Guides: What radar-estimated hail (MESH) is and isn't · Storm reports: preliminary vs final
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