Sign In Become a Member
Climate & Weather

Significant Weather Blog

This blog contains forecast discussions of pending significant weather events prepared by Robert Thompson, retired Meteorologist-in-Charge of the National Weather Service (NWS) Forecast Office in Norton, MA and former Board Chairman and current Board member of the Blue Hill Observatory and Science Center (BHOSC). The discussions are not a substitute for the official forecasts and warnings issued by the NWS Norton Forecast Office. They are intended as a complementary, educational resource for visitors to this web site. The forecast discussions provided here are the opinions of Mr. Thompson, and BHOSC accepts no liability associated with this information.

Significant Weather Blog Sep 1, 2026
Significant Weather Blog: Tuesday, September 1, 2026 11 AM

Weather Update   Southern New England Weather Update An upper trough interacting with a nearly stalled warm front to our southwest will…

Significant Weather Blog Aug 31, 2026
Significant Weather Outlook: Monday, August 31, 2026 11 AM

Weekly Significant Weather Outlook   Any area of concentrated or widespread hazardous weather seems unlikely at this time, although a couple rounds…

Significant Weather Blog Aug 24, 2026
Significant Weather Outlook: Monday, August 24, 2026 10 AM

Weekly Significant Weather Outlook   Hazardous weather (beyond perhaps an isolated severe thunderstorm) appears unlikely in southern New England this week.  A…

Significant Weather Blog Aug 17, 2026
Significant Weather Outlook: Monday, August 17, 2026 10 AM

Weekly Significant Weather Outlook   Significantly hazardous weather appears unlikely across southern New England this week.  The large-scale pattern features a broad…

Significant Weather Blog Aug 10, 2026
Significant Weather Outlook: Monday, August 10, 2026 10 AM

Weekly Significant Weather Outlook Finally, a Break in the Heat and Humidity Later this Week Hot and humid conditions persist into the…

Significant Weather Blog Aug 3, 2026
Significant Weather Outlook: Monday, August 3, 2026 10 AM

Weekly Significant Weather Outlook Showers and a Few Thunderstorms Today – Some with Heavy Downpours with a Risk of Localized Flash Flooding…

Significant Weather Blog Aug 3, 2026
Significant Weather Blog: Monday, August 3, 2026 8 AM

Flash Flood Warnings Issued for Portions of Central MA and Northern CT   An approaching upper-level trough and surface cold front in…

Significant Weather Blog Jul 31, 2026
Significant Weather Blog: Friday, July 31, 2026 11 AM

Wrap Up for July 28-30 Rain Event   An anomalously strong upper-level trough sharpened over the Northeast this past week and caused…

Significant Weather Blog Jul 29, 2026
Significant Weather Blog: Wednesday, July 29, 2026 9 AM

Heavy Rain Across Southern New England Today and Tonight Lingering Bands of At Least Light to Moderate Rain Thursday/Thursday Night   Bands…

Significant Weather Blog Jul 28, 2026
Significant Weather Outlook: Tuesday, July 28, 2026 12 PM

Weekly Significant Weather Outlook Periods of Heavy Rain Likely across Various Portions of Southern New England From This Afternoon through Thursday Night…