Overview: Winter Storm Watches are in effect for the entire region. A developing coastal low will spread snow over the region Tuesday night along with strong easterly coastal winds. The low will continue to push north through the day on Wednesday bringing widespread snow with a wintry mix possible for the Bangor Region and Downeast during the day on Wednesday. Precipitation could change over to a brief period of plain rain on the immediate coast before the event ends Wednesday evening. Widespread snow will taper off to snow showers across the north Wednesday night with all precipitation ending Downeast Wednesday night.
Confidence: Confidence is above average for warning level snowfall (>7″) across the Central Highlands and Northern Maine for this storm. Snowfall amount forecast confidence is much lower for the Bangor region and Downeast due the possibility of mixed precipitation lowering snowfall totals. This will all depend on the exact track of the coastal surface low and there is still enough spread in solutions to pin-point the mixed precipitation line.
Impacts: The biggest impact for this storm will be travel impacts during the day on Wednesday. The storm will be near peak intensity for Wednesday morning commute in the Bangor and Downeast region with peak storm intensity across Northern Maine during the afternoon commute. In addition to the snow, mixed precipitation is becoming more likely for the Bangor region and Downeast. Even though this will lower snowfall amounts, it could make for more hazardous travel conditions on Wednesday. Minor impacts are also possible on the coast due to strong easterly winds Tuesday night into Wednesday leading to the possibility of isolated power outages.
Snow and Blowing Snow: Please see attached graphic for snowfall ranges. Blowing snow impacts will be moderate across the north, but are expected to be limited Downeast due to the mixed precipitation.
Ice: See attached graphic, minor glaze possible.
Wind: Easterly winds of 40 to 45 on the immediate coast. Winds will be 20 to 25 mph further inland out of the east during the day on Wednesday.
Coastal Flooding: None expected at this time due to lower tidal cycles.
Marine: Gale watch for Tuesday night into Wednesday. Waves will be building above 10 feet for the outer coastal waters.
Expect an afternoon email update or full-up brief package this afternoon depending on severity of potential impacts.