Patchy fog is developing across southern New England in areas south of I-90. Visibilities between 1-2 miles are reported, with locally dense fog of less than 1/4 mile. Potential remains for areas of fog to become widespread through early Sunday morning. If so, a Dense Fog Advisory will be considered. Fog may be a hazard to motorist. Dense fog makes it difficult to see what's ahead, turn on your low-beam lights, drive slowly and with caution.

Fog has developed across parts of Southern Connecticut from New Haven east through New London as well as Eastern Long Island this evening. There are patches of dense fog where visibilities will be reduced to a quarter mile or less. Motorists should be prepared for quickly changing visibilities. Slow down, allow for extra space between vehicles and use your low beam headlights in the fog.