Hartford, Connecticut – A rare G4 (Severe) solar storm is expected to impact Earth on Jan. 20, prompting increased monitoring of power grids and critical technology across Connecticut and Rhode Island, according to federal space weather officials.
The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center says a coronal mass ejection (CME) launched from the Sun late last week is forecast to arrive late Sunday into Monday. G4-level geomagnetic storms are uncommon and can interfere with power transmission systems, satellite operations, GPS accuracy, and some radio communications, particularly across interconnected regional grids.
While Connecticut and Rhode Island sit farther south than the most geomagnetically exposed states, officials note that the region’s dense population, aging infrastructure, and reliance on interstate power transmission warrant close monitoring during severe space weather events. NOAA emphasizes that widespread power outages are not expected, but utilities may take precautionary actions to protect sensitive equipment.
For most residents, the solar storm itself will not be noticeable. Experts explain that the primary concern is reduced grid flexibility, as geomagnetic activity can introduce electrical currents into transmission systems. Grid operators may adjust system loads or increase equipment surveillance if conditions intensify.
Cell phone service and internet connectivity are expected to remain largely unaffected. However, minor GPS disruptions are possible, particularly affecting aviation operations, marine navigation, and precision timing systems.
As a visible side effect, auroras could become visible farther south than usual, with a low but possible chance of viewing from northern or rural parts of Connecticut and Rhode Island if geomagnetic activity strengthens.
NOAA forecasters say geomagnetic conditions could persist at lower levels into Tuesday.
