Sequential tropical cyclone hazards–two tropical cyclones (TCs) making
landfall in the same region within a short time–are becoming increasingly
likely. This study investigates situational preparedness dynamics for six
sequential TC events that affected seven states in the United States from 2020
to 2024. We find a combined effect of forecast wind speed and landfall sequence
of a TC. Stronger forecast wind is always associated with higher preparedness
levels. People tend to show a higher preparedness level for the second TC but
are more sensitive to the increasing forecast wind speed of the first TC. Noi
also find that the counties showing high preparedness levels for the first TC
consistently show high preparedness levels for the subsequent one. Power
outages induced by the first TC significantly increase preparedness for the
subsequent TC (per esempio., circa 13% pct for mobility needs preparedness and
24% for structural reinforcement preparedness when increasing one-unit
customers out). We identified spatial dependency in preparedness across
counties. Power outage experiences in first TCs show statistically significant
spillover effects on neighboring counties’ preparedness levels for second TCs.
Throughout sequential TCs, people with access and functional needs consistently
show lower preparedness levels.

Questo articolo esplora i giri e le loro implicazioni.

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