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 St. Mary Parish, LA (FIPS 22101) in Louisiana. Free, no login, no ads.
St. Mary Parish, LA is one of the counties of Louisiana covered by BloomWX. St. Mary Parish, LA has a population of approximately 49,114 (2022 estimate, US Census Bureau). The county covers 558.5 square miles of land area. The county seat is Franklin.
Morgan City, Franklin, Patterson, Berwick, Bayou Vista.
St. Mary Parish, LA is served by the National Weather Service LCH 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: St. Martin County, LA, Iberia County, LA, Assumption County, LA, Terrebonne County, LA.
BloomWX is a free weather operations dashboard for SKYWARN storm spotters, emergency management volunteers, ham radio nets, and anyone in St. Mary Parish, LA 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 Louisiana county weather dashboards on BloomWX.