Download Hurrevac2010 User`s Manual

Hurrevac2010 Users Manual
Notes on the 'Evacuation Considerations' Criteria
1. 1(State and Local) - How fast is the storm tracking toward the area? Storms typically pick up
forward speed as they move further north, meaning that a decision might need to be made on
a storm when it is still well to the south.
Are the tropical storm-force wind fields of the storm growing in size?
2. 2(State and Local) Storms often grow in dimension as they move further north, thereby decreasing the amount
of time remaining before tropical storm force winds are encountered. This and all subsequent
calculations within this topic are limited to a 72-hour period in which wind extents are
forecast.
3. 3(Local) What is the county's longest evacuation clearance time for a storm of this
category? Remember that by default HURREVAC will use the highest category predicted over
the forecast period to answer this criterion. This may or may not be the most appropriate
selection. For closer consideration, refer to notes for Items 1 - 3 under the 'Storm Intensity'
topic. The default selections can be adjusted as described in Evacuation Options.
Using the official forecast track (closest point of approach), are
4. 3(State)/4(Local) tropical storm-force winds forecast in the area and if so, when? In this calculation, the Hourly
Wind Ranges are advanced along the forecast track and a time is noted when tropical stormforce winds first enter the area.
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