The FCC has added three new “event codes” to the Emergency Alert System (EAS) for the 2017 hurricane season. The new rules apply to EAS and NOAA Weather Radio (NWR). Two of the EAS codes correspond to a potential Storm Surge Watch/Warning. The National Weather Service (NWS) is still developing and seeking comments on a Storm Surge Watch/Warning for operational use in 2017. The new codes are:
Extreme Wind Warning (EWW): The EWW is an existing operational warning NWS uses for advance notice of sustained surface wind speeds of 115 MPH or greater during major hurricanes. All NWS Gulf and East Coast Weather Forecast Offices (WFOs) issue the EWW.
Storm Surge Watch (SSA): The NWS may issue an SSA for the gulf and east coasts when life-threatening inundation is possible from rising water moving inland in the specified area, generally within 48 hours. Weather forecast offices could issue the SSA for tropical, subtropical, or post-tropical cyclones. A WFO may issue the watch even earlier, when conditions such as tropical storm-force winds might limit response time for evacuations or other action. A WFO may also issue the watch for locations that could be isolated by inundation in adjacent areas.
Storm Surge Warning (SSW): WFOs may issue an SSW for the gulf and east coasts when tropical inundation is more imminent — generally within 36 hours. NWS may issue a warning when other conditions, such as the onset of tropical storm-force winds, are expected to reduce the time available to evacuate or take other actions. Like the watch, NWS may issue the warning when an area could be isolated by inundation.
For all three new codes, NWS receivers that provide a limited, caption-like message display will likely show “UNKNOWN WARNING” or “UNKNOWN WATCH.” Receivers equipped with Specific Area Message Encoding (SAME) will activate with SAME alarm tones. Receivers equipped with the 1,050 Hz Warning Alarm Tone will activate a tone. The NWS Dissemination Team will work with receiver manufacturers to add the new codes to newly manufactured NWR SAME receivers.
Beginning with the 2017 hurricane season, NWS will request an EAS activation using the EWW event code. If the NWS decides to make the SSW operational in 2017, the NWS will request EAS activation for the Storm Surge Warning. In most jurisdictions, the NWS will not request EAS activation for the Storm Surge Watch. WFOs are now reaching out to state and local Emergency Communications Committees, state and local emergency management agencies, and broadcasters’ associations for help in implementing the new codes. Local WFOs may issue public information statements and update WFO web pages and air public service announcements over NWR. These service changes will be further discussed at outreach events and with seasonal hurricane program briefings.
The FCC order does not require an upgrade of existing equipment already in use. The FCC “will allow EAS participants to upgrade their existing equipment to include the new event codes” on a voluntary basis; however, EAS equipment manufacturers are required to “make necessary software upgrades to EAS participants” by March 12, 2017. In most cases, broadcasters only need to obtain and implement the manufacturer-provided software update.
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