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 New Castle County, DE (FIPS 10003) in Delaware. Free, no login, no ads.
New Castle County, DE is one of the counties of Delaware covered by BloomWX. New Castle County, DE has a population of approximately 570,567 (2022 estimate, US Census Bureau). The county covers 426.3 square miles of land area. The county seat is Wilmington.
Wilmington, Newark, Middletown, Bear, Brookside.
New Castle County, DE is served by the National Weather Service PHI 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: Kent County, MD, Cecil County, MD, Kent County, DE, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Chester County, PA.
BloomWX is a free weather operations dashboard for SKYWARN storm spotters, emergency management volunteers, ham radio nets, and anyone in New Castle County, DE 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 Delaware county weather dashboards on BloomWX.