![]() Suggestion: After midnight for an hour or two, thunder may be booming around metro Baltimore to York PA. This product may undersell what happens, but the bulk is still expected to be along I-70 in Maryland and northward. Suggestion: This storm cluster will enhance and expand. This may compare better to the 9 PM radar. Suggestion for location and coverage may be an hour behind. This fits with the counties in the Watch shown above. Here we see the line slow down over central Maryland with a focus of heavy storms for a few hours North and Northeast of Baltimore. That is what led to some getting clobbered and others missing out. I expect more than shown here.Ītmospheric Memory: The trend over the weekend was slow-moving storms, with some training over the same areas. This is still underperforming, but still a guide for the formation. The simulation loop below will show the bulk of the storm cluster from I-70 in Central Maryland to Southern PA. The pulsing of storms is why this map looks speckled. ![]() It is very possible there is more storm coverage into central Maryland than shown here. So the forecast maps I show below are a suggestion. I want to reinforce that short-range models have consistently underperformed all summer. However, watch the Live radar below and you may see more real activity compared to the underperforming model simulation. The model below reflects the Flood Watch region where the bulk of the storms are expected. A wave of Low Pressure along this front is the reason we expect there to be enhanced thunderstorms overnight. The leftover warm and humid air is about to meet up with and get pushed out by this next cold front. These will be tracked for 45 minutes or so across counties and specific towns in the path. NOT A PROMISEĪ Warning is issued for active storms in progress. This would be for higher POTENTIAL of severe storms. This followed the progress of the line of rain and thunderstorms that will slowly move through overnight.Ī Watch may be issued for a broad area. This has an expiration of varied times, but all Wednesday morning. This is what has prompted a Flood Watch for part of our region where the rain is plotted to be more potent. As a result, some places may receive 1 to 3 inches of rainfall and result in flooding. The main risk overnight is for heavy rain where storm cells may repeat over some areas for a few hours. This will move slowly or nearly stall around central Maryland and Southern Pennsylvania. A line of rain and thunderstorms is expected to develop tonight. If we consider the thunderstorms we had over the weekend, this final push of the cold front may close out this pattern in a similar way. This is part of the premise for my Atmospheric Memory Theory that expands this further out in time. © 2023 NYP Holdings, Inc.One popular weather motto many of us meteorologists learn in school is ‘the trend is your friend’. Areas of the New York metro region are under flash flood warnings as storms creep into the Northeast and showers are expected to continue throughout the day. Other places in and near the metropolitan area may be put under weather advisories in the coming hours as the storm approaches. Winds are fluctuating between 10 and 15 mph out of Kennedy and LaGuardia airports and are expected to stay that way until the early afternoon.īy the late evening, the storm will have left the area, and winds are expected to die down. Robert Mecea The storm began affecting the areas Tuesday morning, but humidity is supposed to drop by Wednesday afternoon. ![]() NWS New York NY / Twitter Vehicles drive through a large puddle on the service road of the eastbound LIE near the Van Wyck Expressway in Queens. Flooding is expected today in the NYC metropolitan area. Queens, Brooklyn, Manhattan and Staten Island, along with parts of New Jersey and Long Island, have already experienced 2 inches of rain overnight, with 1 to 2 more inches expected in the next several hours. Get those umbrellas and rainboots ready for the morning commute.Īreas of the New York metro region are under flash flood warnings as storms creep into the Northeast and showers are expected to continue throughout the day.
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