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City vs state
How does Johnston compare with IA?
Johnston is most above the IA reference in tornado (23 points higher).
Use this page to compare city-level risk against the statewide reference for relocation and planning. The benchmark is p85-based state reference, not an arithmetic average.
Score comparison
Overall
Johnston
51/100
IA
51/100
At state reference.
Flood
Johnston
52/100
IA
69/100
17 points below state reference.
Wind
Johnston
18/100
IA
10/100
8 points above state reference.
Lightning
Johnston
58/100
IA
59/100
1 points below state reference.
Tornado
Johnston
73/100
IA
50/100
23 points above state reference.
Hail
Johnston
100/100
IA
100/100
At state reference.
Storm surge
Johnston
0/100
IA
0/100
At state reference.
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