Live National Weather Service alerts, NEXRAD weather radar, USGS river and stream gauges, Storm Prediction Center convective outlooks, Local Storm Reports, 5-day forecast, air quality, and severe-weather notifications for Mercer County, OH (FIPS 39107) in Ohio. Free, no login, no ads.
Mercer County, OH is one of the counties of Ohio covered by BloomWX. Mercer County, OH has a population of approximately 42,321 (2022 estimate, US Census Bureau). The county covers 462.4 square miles of land area. The county seat is Celina.
Celina, Coldwater, Saint Henry, Fort Recovery, Rockford.
Mercer County, OH is served by the National Weather Service ILN forecast office for warnings, watches, advisories, and decision-support services. The same office produces the Hazardous Weather Outlook, Area Forecast Discussion, and DSS briefing packets you'll see on the BloomWX dashboard for this county.
BloomWX also covers the surrounding counties: Auglaize County, OH, Shelby County, OH, Darke County, OH, Jay County, IN, Adams County, IN, Van Wert County, OH.
BloomWX is a free weather operations dashboard for SKYWARN storm spotters, emergency management volunteers, ham radio nets, and anyone in Mercer County, OH who needs the official NWS data without the consumer-app cruft. Data is pulled directly from weather.gov and refreshes every 60 seconds. Sources: National Weather Service, Storm Prediction Center, USGS Water Data, NOAA Space Weather Prediction Center, Open-Meteo (Air Quality), and the Citizen Weather Observer Program.
Read the BloomWX learn library for beginner-friendly explainers on every dashboard surface, including SPC convective outlooks (TSTM/MRGL/SLGT/ENH/MDT/HIGH), NEXRAD radar, USGS flood gauges, and WPC surface analysis charts. See all Ohio county weather dashboards on BloomWX.