flumag Posted October 12, 2019 Report Posted October 12, 2019 if yes you maybe able to help. What is the black number in the precipitation areas that shows up on different zoom levels? Thanks Hendrik
Rick Junkin Posted October 12, 2019 Report Posted October 12, 2019 Those are the cloud tops in hundreds of feet, i.e. 276 is 27,600 feet. Cheers, Rick 2
DualRatedFlyer Posted October 12, 2019 Report Posted October 12, 2019 37 minutes ago, flumag said: if yes you maybe able to help. What is the black number in the precipitation areas that shows up on different zoom levels? Thanks Hendrik Also the black dots are storm cell projected paths at 20 min increments. 0, 20, 40, 60 min 1
N201MKTurbo Posted October 12, 2019 Report Posted October 12, 2019 Minor correction, they are not loud tops, but the top of the radar returns. 1
David Medders Posted October 12, 2019 Report Posted October 12, 2019 56 minutes ago, Junkman said: Those are the cloud tops in hundreds of feet, i.e. 276 is 27,600 feet. Cheers, Rick Those are ECHO tops, not cloud tops — significant difference. Echo tops are the highest altitude radar return. Cloud tops will be thousands of feet higher. More important, echo tops are a good indication of convection. My magic number is 300. YMMV. David
bradp Posted October 13, 2019 Report Posted October 13, 2019 My magic number is a bit lower - more like 200. This video was of a storm with tops near 230. B
David Medders Posted October 13, 2019 Report Posted October 13, 2019 7 minutes ago, bradp said: My magic number is a bit lower - more like 200. This video was of a storm with tops near 230. B As I said, YMMV. We must also consider storm structure. The reflectivity gradient on the cell in this video should keep us away. A high gradient cell is no-go regardless of the echo top. David
bradp Posted October 13, 2019 Report Posted October 13, 2019 7 hours ago, David Medders said: As I said, YMMV. We must also consider storm structure. The reflectivity gradient on the cell in this video should keep us away. A high gradient cell is no-go regardless of the echo top. David Really good point on echo gradients Dave.
MBDiagMan Posted October 13, 2019 Report Posted October 13, 2019 Altitude of the tops in hundreds of feet.
lithium366 Posted October 14, 2019 Report Posted October 14, 2019 There is a Legends document available for download in Documents / Drives / ForeFlight section. Very useful for OP ForeFlight exploration! According to their own legend these black numbers are echo tops 1
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