Today’s forecast for January, I mean, April 4th brings snow to the Great Lakes and New England as well as the mountains of the Pacific Northwest.
The current Surface Analysis
Today’s National Forecast
A low pressure system will move across the northern Mid-Atlantic region today, bringing rain to portions of the Mid-Atlantic with snow for portions of the Northeast. Snowfall accumulations of 2 to 6 inches are possible across southern New England. The system will move offshore tonight, bringing an end to rain and snow along the East Coast.
Rain and snow are expected from the Pacific Northwest to the northern Intermountain West today as a cold front passes the region. Warm conditions will allow rain to fall initially ahead of the cold front across the Intermountain West, and a few thunderstorms are even possible. As the cold front passes, snow levels will decrease by late this afternoon, and rain will gradually change to snow for many locations by tonight. This system will move into the central/northern plains tonight, with precipitation reaching the Upper Midwest by Tuesday morning. Wintry precipitation will fall on Tuesday from portions of the Upper Midwest to the Upper Great Lakes, including snow as well as some areas of sleet and freezing rain. Farther south, showers and thunderstorms are forecast to develop on Tuesday from the central plains to portions of the Middle/Upper Mississippi valley.
The southwestern U.S. will remain dry with above average temperatures through the next couple days. A cold front will pass through the region on Tuesday, but will produce no precipitation due to a lack of moisture. High temperatures on Monday and Tuesday will be to 10 to 15 degrees above average across the Southwest. Areas of California may approach 20 degrees above average on Tuesday.
Current Model Analysis
High pressure over the Rockies is now weakening as a low pressure system begins to move on shore. Scattered showers will prevail over much of the Rockies with snow in the higher elevations as a steady rain moves on shore for Coastal Washington and Oregon. An artic high pressure over Canada will continue to send an arctic air mass South and help keep some of the precipitation associated with a weak clipper system moving across the Great Lakes as snow from Buffalo over to Boston. High pressure will lead to a mostly clear and warm day in the Southeast and Southern Plains.
By Monday afternoon, rain and snow will be falling over the Pacific Northwest into Idaho and Western Montana. High pressure will be in control every else except the Ohio Valley and Northeast, where a clipepr system begins to strengthen as it reaches the Atlantic near New York City and bring rain and snow to the area. Boston should expect another 2-5 inches of snow with this system but the winds should not be nearly as bad. Gusts were up into the 50’s at times near Boston and the rest of the I-95 Corridor on Sunday.
By early Tuesday, snow should be moving off shore of Cape Cod as very cold air moves in bringing lows down into the teens and lower 20s. Much of the rest of country should be dry except for the Upper Plains into the Pacific Northwest where rai nand show showers will continue in association with another low pressure system in Canada.
Current Severe Weather Outlook
***Severe Weather Analysis***
Thunderstorms will be possible across the Northern Rockies and Plains as well as parts of the Central Appalachians and in the Mid-Atlantic region but organized Severe Storms are not expected.
Isolated Showers and Thunderstorms will develop across the Northern Great Basin early this morning and are forecast to spread across Southern and Eastern Idaho. The cold front that is rapidly advancing eastward across the interior Pacific Northwest will reach Eastern Idaho and Western Montana by late morning or early afternoon. Increased low level forcing associated with the cold front along with a shortwave trough should increase the coverage of thunderstorm activity across Central Montana and Northwestern Wyoming.
Thunderstorms are also forecast to develop along a southeastward moving cold front across the Central Appalachians that will reach the lower elevations of Maryland and Virginia during the afternoon. Surface dew points are very low in this region so buoyancy will be very limited.
This week’s Flood Risk
Yesterday’s Storm Reports
No Storm reports recieved