The unfairness of high pressure


Well, while most of the country experienced moderate to high levels of migration last night, the Delmarva got taxed, and New Jersey may have gotten a small, but early, refund (which seems appropriate, given today’s date, eh?). Here’s the radar from sunset last night through 7:30am this morning.

Frames are every 1/2 hour. Click on the thumbnail to view the full-sized animation.

Base Reflectivity image from Fort Dix Base Velocity image from Fort Dix Base Reflectivity image from Dover AFB Base Velocity image from Dover AFB Base Reflectivity image from Upton NY Base Velocity image from Upton NY Composite Base Reflectivity image from the Northeastern USA

High pressure over the southeastern US has kept the bulk of migrants out to our west over the last few nights. This was no exception last night, where, while we did experience some influx from the Delmarva, we clearly did not get a big push from points further south (which we would need for any significant change in density and diversity). In fact, most of the southeastern US was quiet last night, while the Central and Mississippi flyways were going gangbusters. A small flight was evident out of New Jersey, heading towards Long Island, NY, as was a flight out of New York State. Expect the tried and true spring hotspots to be the best bet for today, and we could have some nice new arrivals mixed in… but any big turnover of species is going to have to wait until a front can push through this high pressure. Oh well, it’ll happen soon enough!

Good Birding

David


One response to “The unfairness of high pressure”

  1. National Park dredge spoils. Not much here! David’s radar was dead-on. Stuff moved out of the area instead of moving in. That said – I did have some birds and I can’t really be sure if they came in last night or a couple nights ago. But:

    2 YELLOW WARBLERS
    1 NORTHERN PARULA
    6 COMMON YELLOWTHROATS – these more than likely came in previously.

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