[UPDATED: 2019-08-29 @1945UTC] Amateur Radio resources organized this week as Hurricane Dorian threatened Puerto Rico and the Virgin Islands and worked its way through the Caribbean. A change in direction spared Puerto Rico — still recovering from hurricanes Irma and Maria in 2017 — from taking a direct hit; the Virgin Islands suffered downed trees and widespread power outages. As of August 29, Dorian was a Category 1 storm with maximum sustained winds near 85 MPH with higher gusts. According to the National Hurricane Center (NHC), Dorian was expected to become a major hurricane on Friday and remain an extremely dangerous hurricane through the weekend, reaching Category 3 or 4 by September 1. Heavy rainfall generated by Dorian could cause flash flooding, the NHC said.

“The risk of devastating hurricane-force winds along the Florida east coast and peninsula late this weekend and early next week continues to increase,” the NHC said on August 29.

“We are standing by in a ready-to-respond state, once a more definitive track is known,” Southern Florida Section Manager Barry Porter, KB1PA, told ARRL Headquarters on August 29. “We will be holding a tri-Section conference call tonight to firm up any plans.” Porter said Florida Voluntary Organizations Active in Disaster and Red Cross were in preparation mode.

On Wednesday, the Hurricane Watch Net (HWN), activated for about 9 hours on 14.325 MHz and 7.268 MHz, working in conjunction with WX4NHC at the NHC in Miami to provide “ground truth” weather data to forecasters. The VoIP Hurricane Net also activated.

The HWN has continued to closely monitor Dorian's progress. HWN Manager Bobby Graves, KB5HAV, said the HWN tentatively plans reactivate on August 30 at 2100 UTC.

The ARRL Headquarters Emergency Response Team is also monitoring the situation closely. ARRL officials are in regular communication with partner agencies, particularly FEMA and the Department of Homeland Security. In addition, ARRL HQ remains in close contact with Field Organization officials in the affected region, where some ARRL Ham Aid equipment was previously positioned.

W1AW, which had already planned to be in operation for the Hiram Percy Maxim 150th Birthday special event this weekend, will remain ready to assist with emergency communications.