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September Discobs 2021


George BM
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Ensembles and Ops all seem set with east coast ridging for the foreseeable future. West coast trough or neutral heights with low heights over the pole.  So probably not a lot of pleasant fall weather yet. But the pattern would be more conducive to CONUS landfalling tropical systems.

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1 hour ago, WxUSAF said:

Ensembles and Ops all seem set with east coast ridging for the foreseeable future. West coast trough or neutral heights with low heights over the pole.  So probably not a lot of pleasant fall weather yet. But the pattern would be more conducive to CONUS landfalling tropical systems.

That’s not good news on either front.

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  • George BM changed the title to September Discobs 2021
16 hours ago, VirgilCain said:

Question - Looking at Sterling through radarscope - Are those migrating birds?

radar.jpg

Hard to tell from a still image.  "Clear air" echoes can be a variety of things, with bugs probably being the top culprit.  The radar wavelength that the NWS radar are at (S-band, 10cm) are also sensitive to Bragg scattering from atmospheric eddies.  At times, the radar beam can also be reflected back to the surface (anomalous propagation).

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21 hours ago, MN Transplant said:

Hard to tell from a still image.  "Clear air" echoes can be a variety of things, with bugs probably being the top culprit.  The radar wavelength that the NWS radar are at (S-band, 10cm) are also sensitive to Bragg scattering from atmospheric eddies.  At times, the radar beam can also be reflected back to the surface (anomalous propagation).

Thanks for the explanation! I've read that radar sites along the flyways often catch the movement at night during the spring and autumn migrations, but I wasn't sure if that's what I was looking at. 

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2 hours ago, yoda said:

Ugh... looks like warm and humid temps for the next 7-10 days... 85-90 and DPs in the 60s are just ugly in mid September

Exactly, looks aweful ! 

September should be another August. Climo is getting warmer and warmer right before our eyes. 

 

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Anyone else just hear what sounded like a large rumble of thunder?  No t-storms in our general area.  Checked out the Real Time Lightning map and there was a lone strike up near Gaithersburg, yet there's nothing on radar at all around here.  Very strange.  And no, I'm not hallucinating.  Am up working on a report for work without any IPA induced altered state.  

 

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