Radar Anomaly, October 9, 2015

Jparmele89

New Member
I caught this on radar last night at 11:10 p.m. over the Florida pan handle. Five minutes later it was gone. Does anyone what this is? Or what it's caused by?

Screenshot_2015-10-09-23-15-22-1.png
 
Last edited by a moderator:
I spent many years working on and with the systems that process WSR-88D data. If it was gone in about 5 minutes, then that's the time an NWS doppler weather radar takes to do a full volume scan (actually 6 min). Given the symmetrical, concentric nature of the returns and that it was only in a single scan, it could just be a processing error. Ground clutter or transient interference will do this as well. The thing to keep in mind is that weather has persistence. It generally does not pop up and go away (especially for something with as large a radar return as this 'anomaly') with 5 or 6 minutes. That's a good indicator that it didn't really exist.
 

solrey

Senior Member.
The minimally filtered College of DuPage radar image indicates biological returns which at this time of year would most likely be migrating birds. I think the transient banding is just how that particular filter in the OP image handles biological targets.

Both the Hydrometeor Classification and the lowish value of the Correlation Coefficient indicate biological returns (BI).

Screenshot from 2015-10-10 11:42:56.png



Screenshot from 2015-10-10 11:52:31.png


Here's the Birdcast migration forecast:

http://birdcast.info/forecast/regional-migration-forecast-9-16-october-2015/
 
Last edited:
Here's the GOES IR imagery from that time. If you zoom into the area, you'll see low clouds. The second image (about 30 minutes after the OP report) does have a faint oval shaped cloud shape (especially to the east of the site), but that could just be coincidence. From my experience, this is either biologicals or a transient atmospheric reflectivity event, either of which would be interpreted by the software as the concentric ring returns.
 

Attachments

  • ECIR152830215.GIF
    ECIR152830215.GIF
    182.2 KB · Views: 144
  • ECIR152830245.GIF
    ECIR152830245.GIF
    180 KB · Views: 131

skephu

Senior Member.
This type of artifact is caused by a layer of air with raindrops which don't reach the ground (i.e. virga).
The radar scans the atmosphere at discrete angles like this:
upload_2015-10-11_15-9-17.png
So the area above the radar will appear as concentric rings.
 

solrey

Senior Member.
What's known as bright banding occurs at the freezing layer where snow starts to melt. The liquid outer layer of melting snow produces much stronger returns than snow or rain alone because it appears to be very large rain drops. I don't normally see concentric rings with virga but under the right circumstances I suppose it could happen. Virga is usually identified by comparing different elevation scans. However I don't see a layer of nimbostratus on the satellite IR images and radar shows just a few isolated rain cells.

A major advantage of the new dual-pol products is the ability to compare the vertical and horizontal polarized returns which identifies the nature of the targets. The data from more than one dual-pol product indicates biological returns that were persistent throughout the night, the rings don't show up on less filtered data, there is no obvious stratus layer on satellite, and migration season is in full swing. I'm convinced the returns were from birds and the rings the result of filtering strong non-precip targets.
 

jd101

New Member
I caught these two on 10/16/15.
 

Attachments

  • trim.AEB85D60-BF60-45C1-B655-8B2CED70E2D9.MOV
    8.9 MB · Views: 458
Thread starter Related Articles Forum Replies Date
D [Possible explanation] Kevin Day (Nimitz tictac ufos) radar encounter UFO Videos and Reports from the US Navy 9
Mendel Debunked: Radar Waves Affect Clouds General Discussion 0
Z.W. Wolf Kobe Bryant Helicopter: Air Traffic Recording and Radar Footage General Discussion 3
Mick West Cube in a Sphere UFO's Seen by Navy pilots. Radar Targets? UFO Videos and Reports from the US Navy 16
Whitebeard 'Strange' Flight Path on FR24 Skydentify - What is that Thing in the Sky? 10
W Debunked: RADAR proves no curve! Flat Earth 26
Marin B Flight Radar 24 glitch? Skydentify - What is that Thing in the Sky? 4
S Claim: Russian radar would have picked up MH17 missile Flight MH17 15
Trailblazer Unusual flight paths over SW England Skydentify - What is that Thing in the Sky? 12
TEEJ Belfast Observer Skywatch claiming that airliners do not appear on Flight Radar 24 - 10th March 2015 Skydentify - What is that Thing in the Sky? 0
D [MoreInfoNeeded]Germany NewsTV: Explanation for radar cloud Contrails and Chemtrails 14
TEEJ Gary Cameron Clydebank, Scotland Video, 1st May 2015- Claim of aircraft not being on Flight Radar 24 Skydentify - What is that Thing in the Sky? 11
Efftup Issue with Flight Radar 24? General Discussion 10
Simon Gunson MH370 Radar sighting in Straits of Malacca debunked Flight MH370 30
Qualiall Air Algerie Flight AH5017 carrying 116 disappears from radar General Discussion 10
BlueCollarCritic Weatherman Acknowledges Military's Dumping of Chaff into The Atmosphere Contrails and Chemtrails 27
M Claim: MH370 "thrown around like fighter jet in a bid to avoid radar source"? [Dubious] Flight MH370 11
David Fraser The NERC funded MST Radar facility in Wales is not a HAARP installation Contrails and Chemtrails 58
ssfor27 Debunked: Dover Air Force Base radar "pulse" HAARP 1
solrey Debunked: Radar anomalies and severe weather HAARP 42
solrey Debunked: RADAR used to GENERATE LIGHTNING via S-band HAARP 2
Spongebob New analysis of 9/11 radar and video evidence 9/11 6
Mick West Debunked: Chemtrail Spray Operations Captured on Doppler Radar Contrails and Chemtrails 10
P Another photographic anomaly [Long exposure of plane lights] Skydentify - What is that Thing in the Sky? 2
Inanaz93 Photo Anomaly - Missing my face. UFOs, Aliens, Monsters, and the Paranormal 2
386 Small Green Anomaly with Blue Trail (Night Sky Photography) [Lens Flare/Reflection] Skydentify - What is that Thing in the Sky? 22
derrick06 Another Google Moon Anomaly General Discussion 1
Mick West Twitter's October Outage Current Events 11
Related Articles




























Related Articles

Top