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 Northumberland County, PA (FIPS 42097) in Pennsylvania. Free, no login, no ads.
Northumberland County, PA is one of the counties of Pennsylvania covered by BloomWX. Northumberland County, PA has a population of approximately 91,340 (2022 estimate, US Census Bureau). The county covers 457.7 square miles of land area. The county seat is Sunbury.
Sunbury, Shamokin, Milton, Mount Carmel, Northumberland.
Northumberland County, PA is served by the National Weather Service CTP 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: Montour County, PA, Columbia County, PA, Lycoming County, PA, Juniata County, PA, Snyder County, PA, Perry County, PA, Dauphin County, PA, Union County, PA, Schuylkill County, PA.
BloomWX is a free weather operations dashboard for SKYWARN storm spotters, emergency management volunteers, ham radio nets, and anyone in Northumberland County, PA 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 Pennsylvania county weather dashboards on BloomWX.