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Today's updated is presented by Allspeed Cyclery & Snow in Portland. Whether it is late-season deals on ski equipment, time for a new bike, or a tune-up on your current one, check them out at https://www.allspeed.com/ PTW continues to look for new business partners and individual donors in order to fund current operations and for future expansion. For more details, please check the donate page, and thank you in advance for your support! More sun to the north for Monday MONDAY: High pressure to the north brings sun to The County for the day. A traffic jam offshore to the east has slowed the progression of a trailing secondary cold front that passed through the region overnight, which results in elevation snow showers and coastal rain showers through the morning. The sun may break through the clouds over the west and east, but southern areas will likely deal with the gray sky all day. High temperatures range in the mid-30s to mid-40s, with a chilly south/southeast breeze developing in the afternoon. Snow and rain for the region Tuesday Monday 8 PM (00z Tuesday) to 2 AM Wednesday (06z) - Low pressure moves east from the Great Lakes. Onshore flow from the southeast may kick up rain showers for the shorelines, with snow showers over the interior areas overnight into Tuesday morning. Any snowfall accumulation will likely be on grassy surfaces, with less than an inch possible by daylight. Temperatures start Tuesday in the low 20s north to around 32° along the shorelines. There could be a few slick spots on side streets and secondary roads, but travel impacts appear minor for the morning commute. As the low slides to the east, snow showers will blanket much of the state Tuesday morning, and rain showers will develop over southwestern areas as warmer air moves in from the ocean. Snowfall accumulation appears to be light through the morning, then may gain in intensity as the low nears Penobscot Bay. The forecast then becomes tricky as the idea of banding comes into play, which may produce snowfall rates upwards of 1"/hour in the afternoon. The general idea of where that may occur ranges from the Moosehead region to the southeast and causes slick driving conditions where it happens. As the low heads for Nova Scotia Tuesday night, precipitation tapers from west to east. A trailing cold front may generate snow showers for the western mountains and the Quebec border region.  Figuring in snowfall amounts for early spring storms poses many challenges. One factor is the current ground temperature. Based on the two-inch soil temperatures illustrated in this graphic, snow may have difficulty accumulating in the light blue areas and a better chance in the darker blue region. It will take a high snowfall rate to pile up for the south and east.  This system works well for the taller hills. Mounts Washington and Katahdin could receive upwards of a foot of snow from this. The higher the elevations, the better the snow-to-water ratios will be. The lower the topography, the wetter the snow. Since this is primarily a diurnal event given the time of year, it will be a challenge for accumulation on roads, with grassy surfaces likely to collect what falls. Shoveling and plowing is optional for this one as temperatures warm above freezing on Wednesday. The potential for a soaker this weekend While there are room for changes, the general idea for now is the weekend appears to be a washout. Wet and breezy seems to be the general theme from Friday night through Sunday, looking at the long-range, with ½-1"+ rain possible. Stay tuned for more on this. The PTW Weather Wall has the latest information... Your support is greatly appreciated! Always have MULTIPLE ways to receive weather alerts. Stay aware, stay on alert, and stay safe. - Mike PRINT MEDIA: Feel free to quote and cite my work here for your stories. Please give me the professional courtesy of knowing that you are referencing my material so I can read your final product and acknowledge it on my media and link it on the PTW IN MEDIA page here on the website. Feel free to send me a message via the Facebook page or Twitter (X) to get my phone number if necessary. Thank you! NOTE: The forecast information depicted on this platform is for general information purposes only for the public and is not designed or intended for commercial use. For those seeking pinpoint weather information for business operations, you should use a private sector source. For information about where to find commercial forecasters to assist your business, please message me and I will be happy to help you. |
Mike Haggett
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