Hazard Score
57 Catastrophes Recorded
Johnston, Iowa
9 Land Tracts in Polk County , Middle Des Moines Watershed
Johnston, Iowa, located in Polk County, has a relatively moderate overall natural disaster and climate risk assessment. The area experiences a temperate climate with moderate precipitation and humidity levels. However, Johnston is at a relatively high risk of tornadoes due to its location in Tornado Alley. The city has a history of severe weather events, including damaging hail storms and strong winds.
Johnston's proximity to the Des Moines River poses a flooding risk, especially during heavy rainfall or snowmelt. While the risk of earthquakes is relatively low in Iowa compared to other states, fault lines do exist in the region. The city is also located in a hydrologic unit, the Middle Des Moines, which can contribute to increased flood risk. Additionally, Johnston's location in the Upper Mississippi hydrologic region means it is susceptible to river flooding during periods of high water levels.
Overall, Johnston faces a variety of natural disaster risks, including tornadoes, flooding, and severe weather events. It is essential for residents and local authorities to be prepared for these hazards and have emergency plans in place. Additionally, ongoing monitoring of climate patterns and geological features in the region can help mitigate risk and ensure the safety of the community.
Wildfire Risk: Very Low
Tornado Risk: Low
Hurricane Risk: Very Low
Hail Risk: Moderate
Flood Risk: Moderate
Tsunami Risk: Very Low
Earthquake Risk: Very Low
Wind Risk: Moderate
HAZARDS
13
Power Transmission Lines
0
Coastlines
2
Water Bodies
0
Fault Lines
EMERGENCY SERVICES
1
Hazard Shelters
2
Fire Stations
0
Hospitals
1
Police Stations
COMMUNITY PROFILE
Polk, Iowa faces a relatively moderate overall natural disaster and climate risk rating, with specific risks including hailstorms, thunderstorms, and flooding. The area experiences a high frequency of lightning events, with a risk rating of relatively moderate. The risk of wildfires is relatively low, while the risk of windstorms is relatively high due to the area's exposure to strong winds.
Polk County is located inland, away from coastlines, which reduces the risk of hurricanes and tsunamis. However, the area is prone to flooding due to its proximity to water bodies such as rivers and lakes. The region also has a low risk of earthquakes, given its distance from major fault lines. The presence of agricultural land and urban areas in the county increases the vulnerability to certain disasters, such as hailstorms and thunderstorms, which can cause damage to crops and infrastructure.
Geological features in Polk County include river ...
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CLIMATE OVERVIEW
NATURAL CATASTROPHE TIMELINE
Tornado
2020-05-25
019017
2019-03-30
Flooding
Snowmelt, Heavy Rain, Ice Jams
2019-03-13Hailstorm
2018-09-01
Hailstorm
2018-09-01
Hailstorm
2018-09-01
Hailstorm
2018-09-01
Flooding
Heavy Rain
2018-06-20Hailstorm
2017-06-15
Hailstorm
2017-06-15
Hailstorm
2017-06-15
Hailstorm
2017-05-17
Hailstorm
2017-05-17
Flooding
Heavy Rain
2014-06-10Flooding
Heavy Rain
2013-05-25Hailstorm
2013-05-20
Hailstorm
2011-06-19
Hailstorm
2011-06-09
Hailstorm
2011-03-22
Flooding
Heavy Rain And Snow
2011-03-07Hailstorm
2010-09-18
Flooding
Dam Failure, Heavy Rain
2010-07-25Hailstorm
2010-04-05
Hailstorm
2010-04-05
Flooding
Heavy Rain Snowmelt Dam B
2010-03-10Hailstorm
2009-07-14
Hailstorm
2009-07-14
Hailstorm
2009-07-14
Hailstorm
2009-07-14
Hailstorm
2009-07-14
Hailstorm
2009-06-07
Flooding
Heavy Rain
2008-12-10Flooding
Heavy Rain
2008-06-05Hailstorm
2008-05-25
Hailstorm
2007-08-20
Flooding
Heavy Rain
2007-08-16Flooding
Heavy Rain
2007-05-06Hailstorm
2007-03-21
Hailstorm
2007-03-21
Hailstorm
2005-06-13
Hailstorm
2005-06-13
Hailstorm
2005-06-13
Hailstorm
2005-06-13
Hailstorm
2004-05-17
Hailstorm
2004-05-17
Hailstorm
2004-04-16
Hailstorm
2004-04-16
Hailstorm
2002-04-18
Hailstorm
2001-04-08
Hailstorm
2001-04-06
Hailstorm
2000-05-30
Hailstorm
1998-05-19
Hailstorm
1998-05-19
Flooding
Heavy Rain
1990-08-18Hailstorm
1986-05-09
Hailstorm
1981-04-10
Tornado
1958-03-30