Hurricane Irma is getting widespread news coverage and will affect many countried in the Carribean. There are the usual American nets set up to gather information on the storm on 14.265 and 14.325MHz. Cesar Pio Santos, HR2P Emergency Communications Co-Ordinator for IARU Region 2 also reminds us of the following frequencies which may be in use in the area.  As always, for those frequencies within the Region 1 frequency allocations, please take steps to avoid interference to emergency operations.

Dominican Republic
80 meters 3,780 kHz
40 meters 7,065 Khz

Cuba
40 meters Daytime 7,110 kHz as primary frequency, and 7,120 kHz as secondary frequency
Frequencies 7,045, 7,080 kHz for Provincial Network.
80 meters Night time 3,740 kHz as primary frequency, and 3,720 kHz as secondary frequency.

Puerto Rico
80 meters Primary Frequency 3,873 kHz 3,815 kHz Secondary Frequency
40 meters Primary Frequency 7,182 kHz 7,255 kHz Secondary Frequency
20 meters Primary Frequency 14,330 kHz
15 meters Primary Frequency 21.360 kHz
10 meters Primary Frequency 28.330 kHz

Lesser Antilles (Windward & Leeward Islands)

Caribbean Emergency and Weather Net (CEWN)
80 meters 3.815 kHz
40 meters 7.162 kHz when needed

Bron: http://iaru-r1.org/