|(a) Before an applicable storm, the association must
take steps to ensure the deployment of mobile measurement platforms
and fixed surface-level devices that:
(1) provide real-time wind speed and direction measurements
during the applicable storm; and
(2) can be used both for forecasting and producing
post-event wind field hindcasts.
(b) Wind measurements must be capable of generating
gust wind speed and wind-direction time histories during an applicable
(c) The association must deploy at least 40 to 60 mobile
wind measurement platforms in two layers, with the first layer in
close proximity to the coastline and the second layer approximately
20 miles inland. The mobile wind measurement platforms must be deployed
(1) three to five miles apart in the eyewall region
of the storm;
(2) up to 10 miles apart in the outer regions of the
(3) with a wind speed and direction sampling frequency
of 10 hertz or higher; and
(4) a temperature, barometric pressure, and relative
humidity sampling frequency of 1 hertz or higher.
(d) The association must deploy sufficient mobile wind
measurement platforms along the coast in front of a land-falling storm
to ensure that a high-resolution wind field with small errors--no
more than ±2 percent of the maximum sustained wind measured
in a 30-minute period--can be developed for use in wind damage prediction.
(e) Wherever reasonable, the mobile wind measurement
platforms must be co-located with surge and wave gauges.