Johnson County, AR Environment & Hazard Risk

• Ice stormRelatively High$1.2M/yr expected annual loss, about 1.6 events a year
• Heat waveRelatively Moderate$1.05M/yr expected annual loss, about 16 events a year
• TornadoRelatively Moderate$2.67M/yr expected annual loss, about once every 2 years
• LightningRelatively Moderate$444K/yr expected annual loss, about 60 events a year
• EarthquakeRelatively Low$535K/yr expected annual loss, about once every 416 years
• WildfireRelatively Low$102K/yr expected annual loss, about once every 539 years
• LandslideRelatively Low$3,218/yr expected annual loss, about once every 1 year
• Winter weatherRelatively Moderate$80.12K/yr expected annual loss, about 7.1 events a year
• Strong windRelatively Moderate$530K/yr expected annual loss, about 4.2 events a year
• HailRelatively Low$173K/yr expected annual loss, about 5.6 events a year
• DroughtRelatively Low$82.38K/yr expected annual loss, about 12 events a year
• Cold waveRelatively Low$537K/yr expected annual loss, about 1.2 events a year
• HurricaneVery Low$16.78K/yr expected annual loss, about once every 171 years

Bars show the national percentile score (0 to 100) for each hazard. Dollar figures are expected annual losses to buildings, people and crops. Not rated here: avalanche, coastal flooding, riverine flooding, tsunami, volcanic activity.

Check the flood zone for an address

Homes with flood insurance

46 of 10,685 (0.4%)

Homes in high-risk flood zones

355

Insured in high-risk zones

41 (12%)

Flood claims since 1978

6

Claims paid since 1978

$34.11K

• Thunderstorm Wind212
• Hail139
• Flash Flood53 · 1 death
• Tornado20 · 3 deaths
• Winter Weather6
• Lightning5
• Winter Storm5
• Heavy Rain3
• Flood3
• Funnel Cloud1

• TornadoEF3, 26.28 mi path, 1,430 yd wide05/25/2011

  New Spadra, Johnson County

  1 death, 4 injured, $13M damage

  What happened

  This tornado moved through Clarksville, causing extensive damage at the country club and to businesses and residences on the south and east sides of town. Initially, the entire city of Clarksville was without electricity. About 70% of electric customers had power restored by the end of the day on the 25th, but the hardest-hit areas lacked power for a week. In Clarksville, the tornado took a similar path to that of a tornado which occurred on April 7, 1980. After leaving Clarksville, the tornado moved off to the northeast passing between Strawberry and Chronister Store. A 65 year-old man was killed in the area of the Strawberry community when the tornado destroyed a small house on a goat farm. Altogether, at least 150 residences in Johnson County were damaged or destroyed. The tornado continued moving to the northeast, moving into the Ozark National Forest. Many trees were blown down, blocking roads in the forest. The tornado exited Johnson County south-southeast of Dillen and entered Pope County south-southwest of Bertha.

• TornadoEF2, 27.14 mi path, 1,615 yd wide05/25/2011

  Coal Hill, Johnson County

  1 death, 11 injured, $5.5M damage

  What happened

  This is the sixth and final segment of a six-segment tornado. (The first, third, and fifth segments occurred in Franklin County in the Tulsa County Warning Area.) The tornado moved out of Franklin County north of Alix and entered Johnson County northwest of Coal Hill. In Johnson County, the tornado first moved through the Centerpoint community, knocking down trees in the cemetery and badly damaging several residences. The tornado next moved on to the Bethlehem community, where several mobile homes were destroyed and some additional residences were damaged. A 31 year-old woman in one of the mobile homes was killed and approximately 11 other people were injured. The tornado next moved on to Harmony, damaging additional residences, barns, chicken houses, and outbuildings, before continuing into the Ozark National Forest. Damage also occurred near Ozone before the tornado lifted farther to the northeast in the forest. Altogether, at least 65 residences were damaged or destroyed in Johnson County.

• TornadoF2, 22.7 mi path, 500 yd wide11/24/2001

  Hunt, Johnson County

  1 death, 4 injured

  What happened

  An F2 tornado that developed over Franklin County, moved into Johnson County about 3 miles west-southwest of Hunt, on Highway 352. The tornado moved northeastward, passing just northwest of Hunt. The tornado continued on across a portion of Horsehead Lake, tracked several miles east of Catalpa and then crossed into Newton County about one mile west of Salus. The tornado killed a woman in a mobile home on County Road 272, about 1.5 miles northwest of Hunt. Two other people inside the mobile home sustained minor injuries. Two additional injuries occurred on County Road 29, about 1.5 miles north of Hunt, when two people were inside a chicken house when it was destroyed. Six chicken houses were destroyed at this location. Three of the chicken houses contained about 120 thousand chickens, many of which were killed. Other damage in Johnson County included more than a dozen barns destroyed, several mobile homes destroyed, several homes with major damage and a number of homes with lesser damage. A number of vehicles were destroyed and many others were damaged. Many outbuildings were destroyed and thousands of trees were blown down.

• Flash Flood04/05/1997

  Oark, Johnson County

  1 death

  What happened

  Heavy rains caused flash flooding across parts of Johnson County. A vehicle driving across a low-water bridge was swept off the bridge by the high water. The driver of the vehicle drowned.

• Flash Flood10/30/2009

  Oark, Johnson County

  $2M damage

  What happened

  Flooding on Spadra Creek and Horsehead Creek caused roads to be flooded and culverts washed out. Numerous streets were flooded in Clarksville, as was U.S. Highway 64 around Hartman and Coal Hill. Around 9:20 PM CDT, a washout on a railroad track caused a train derailment in the Coal Hill Bottoms, south of Coal Hill. Nineteen hopper cars carrying soybeans were derailed, spilling the beans and tearing up a section of track. Mudslides occurred on Interstate 40 southwest of Hunt, on Arkansas Highway 103 in the Batson Mountain vicinity, and on a road north of Catalpa. Eight houses were flooded in the western part of the county. Cattle had to be rescued from flooding at the Dirty Creek Bridge on Arkansas Highway 164. Numerous county roads were flooded in the area west of Arkansas Highway 21. Several water rescues were necessary.

• Thunderstorm Wind61 kt wind06/12/2009

  Shady Grove, Johnson County

  $500K damage

  What happened

  Numerous trees were blown down, some of which fell on houses. Numerous power lines were blown down, and some power poles were snapped. Business signs were blown down. The roof was blown off a business, and some lumber sheds were damaged at a lumber yard. Shingles were blown off houses.

• Thunderstorm Wind56 kt wind06/22/2026

  Lamar, Johnson County

• Thunderstorm Wind56 kt wind06/22/2026

  Lamar, Johnson County

• Hail1" hail04/26/2026

  Ozone, Johnson County

• Thunderstorm Wind52 kt wind04/16/2026

  Clarksville, Johnson County

• Thunderstorm Wind56 kt wind04/16/2026

  Coal Hill, Johnson County

• Winter Storm01/24/2026

  Johnson County Higher Elevations

• Winter Storm01/24/2026

  Southern Johnson County

• Flash Flood09/24/2025

  Oark, Johnson County

• Hurricane Ike (2008)09/01/2008 · Landfall: TX · 935 mbTropical storm46 mph nearby

• Clarksville Connected UtilitiesServes 9,410 · Surface water · Local governmentNo health violations
• Horsehead Water AssociationServes 5,792 · Purchased surface water · Local governmentNo health violations+4 monitoring or reporting
• East Johnson Co Water AssnServes 5,200 · Purchased surface water · Local government1 health violation
• Watalula Water Ass0ciationServes 2,278 · Purchased surface water · Local governmentNo health violations
• Knoxville WaterworksServes 2,087 · Purchased surface water · Local governmentNo health violations
• Lamar WaterworksServes 1,885 · Purchased surface water · Local governmentNo health violations+2 monitoring or reporting
• Ludwig Water AssociationServes 1,610 · Purchased surface water · Local governmentNo health violations
• Coal Hill WaterworksServes 1,372 · Purchased surface water · Local government2 health violations+3 monitoring or reporting