Meteorology Not Modelology™

Late Season Winter Storm Provides Variety Of Impacts

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London, GB
3:36 am, Apr 19, 2025
weather icon 53°C | °F
L: 52° H: 54°
overcast clouds
Humidity 79 %
Pressure 1007 hPa
Wind 12 mph E
Wind Gust Wind Gust: 0 mph
Precipitation Precipitation: 0 inch
Dew Point Dew Point: 0°
Clouds Clouds: 100%
Rain Chance Rain Chance: 0%
Snow Snow: 0
Visibility Visibility: 6 mi
Air Quality Air Quality:
Sunrise Sunrise: 5:55 am
Sunset Sunset: 8:02 pm

A dynamic winter storm will provide a variety of impacts to the region at the start week with periods of rain, strong winds, coastal flooding along the coast, and debilitating snowfall for the higher elevations.

An area of low pressure will invade the region tomorrow after 6 AM with periods of rain for much of the region and a mix of snow, sleet, and rain for the Poconos and Catskills.  While the wintry mix will continue over the higher elevation, intense rainfall is expected to continue along the coast through the evening hours.  With winds from the northeast at 10 to 20 mph with gusts over 40 mph, there will be a threat for power outages and some minor to moderate coastal flooding.

Tomorrow night through Tuesday morning, the low-pressure system will track through the coastal waters and towards the coastal waters of Southern New England while explosively intensifying.  The wintry mix over the interior will change over to driving wet snow with visibility below a mile at times and steady snow accumulation while the rain continues along the coast.  As cold air starts to bleed southeastward to the coast, the rain will begin to mix with sleet and snow and change over to sleet and snow for locations north and northwest of I-95.

From Tuesday morning through Tuesday evening, the low-pressure system will begin to pull away while a trough lingers over the region.  Cold air will continue to settle into the coast, which will allow for all precipitation to change over to snow.  However, surface temperatures along the coast will remain above freezing, limiting snow accumulation.  Meanwhile, winds will back to the northwest and increase to 15 to 30 mph with gusts over 50 mph at times.

The storm will exit on Tuesday night with windy conditions continuing on through Wednesday.

This storm will have the potential to produce snow-covered and snow-packed roadways over the interior, icy road conditions in the northern suburbs of Philadelphia and New York City, coastal flooding on the coast, wind damage throughout the region, and power outages.

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