Oct 3: Coastal Flooding and Beach Erosion Continues

Jonathan Carr
By Jonathan Carr October 3, 2015 09:21

Oct 3: Coastal Flooding and Beach Erosion Continues

Coastal regions of New Jersey will continue to see above-normal tidal cycles as onshore flow persists. Basically, an area of strong high pressure in Canada (clockwise anti-cyclonic flow in the northern hemisphere) is working with Joaquin’s current position (counter-clockwise cyclonic flow in the northern hemisphere) to squeeze the onshore flow jet into the mid-Atlantic. This will continue to occur until Joaquin swings out to sea around an area of low pressure in South Carolina. It almost looks like a Fijiwhara effect had a kid with an inverted trough. I apologize if that botches the science of it but that’s what it resembles to me.

Therefore, I expect tidal cycles to remain high until at least Monday. My favorite place to monitor tide cycles and levels is right here. The link is stationed at Atlantic City but you can change your city. The National Weather Service (Mt. Holly, NJ office) has coastal flood warnings and advisories in effect for a lot of New Jersey:

nws

As far as rainfall goes, the NWS Weather Prediction Center (WPC) expects the following additional rainfall before precipitation tapers off between tonight and Sunday morning (a little less than a half-inch for all of NJ):

wpc

By Tuesday morning, the onshore flow should subside as high pressure moves in mid-week and gives us cool, crisp and dry air for as far as I can comfortably see in the forecast. Until then, please use caution in coastal regions that are flooding, especially during high tide. Also, please use caution along the beach. Erosion will be pretty substantial with dangerous currents and waves. It is important to note that the current flooding and wind, unfortunate as it is, is not from a land-falling Joaquin. Be safe! JC

Cover image credit: Shaynna Lynne, taken on 9th street in Surf City, NJ

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Jonathan Carr
By Jonathan Carr October 3, 2015 09:21

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