Post on 06-Apr-2018
Hurricane Tiered Evacuation
Bruce Sterling Chief Regional Coordinator, Region 5
Virginia Department of Emergency Management
Methodology of Determining Hurricane Risk
Historical Approach • SLOSH Maximum of Maximums (MOM) for Cat 1-4 • Evacuation zones developed within each category • Zones not used to communicate evacuation message
New Approach • SLOSH Maximum Envelope of Water (MEOW) for Cat 1-4 • Four evacuation zones developed – tied to storm track scenario • Citizens encouraged to familiarize themselves with their zone
B
C D
B C
A
Storm Intensity Grouping
Storm Track Directional Grouping P to N NNW to WNW
Cat 1 - 2
Cat 3
Cat 4
Cat 1
Cat 2
Cat 3
Cat 4
NE NNE N NNW NW WNW
Evacuation Zone Relation to Storm Track
Cat 1
Cat 2
Cat 3
Cat 4
NE NNE N NNW NW WNW
Populations Impacted
Zone A – 246,946
Zone B – 304,972
Zone C – 407,624
Zone A – 246,946
Zone D – 264,708
Zone A +B+C – 959,452
Zone A +B – 551,918
Zone A +B+C+D– 1,224,250
Cumulative Totals