The National Weather Service (NWS) has implemented a change to Garrett County’s forecast zones on March 19, 2025; splitting the current single-zone system into two: MDZ509 (Western Garrett) and MDZ510 (Eastern Garrett). This update will allow for more accurate weather alerts and advisories, particularly during winter storms and high-wind events that impact different parts of the county in varying ways.

Garrett County Emergency Management relies on the NWS for critical weather forecasting that informs local preparedness and response efforts. The ability to issue more refined watches, warnings, and advisories will enhance public safety by providing more precise information for residents, businesses, and emergency responders.
“This update is an important step in improving how we monitor and respond to severe weather conditions in Garrett County,” said Justin Orendorf, Director of Garrett County Emergency Management. “We know that weather impacts can vary greatly across the county due to differences in elevation and terrain. Having two forecast zones will help ensure that our residents and emergency responders receive the most accurate and relevant information possible.”
This change will not impact NOAA Weather Radio alerts, as those continue to use county-based codes, nor will it require any action from residents.
Visit weather.gov or follow Garrett County Emergency Management (via the Citizen Connect service at Citizen Connect - Garrett County Government or on Facebook @GarrettCountyOEM911) for local updates. For more information, contact Garrett County Emergency Services at jorendorf@garrettcountymd.gov or 301-334-7619.