[South Florida DX Association] 10 meter propagation - DX Sherlock VHF/UHF Propagation Warnings Alert

[Bill Marx]

DX Sherlock VHF/UHF Propagation Warnings Alert which now also supports 10m.

http://www.vhfdx.net/spots/warnings.php

You basically register your email address with them and select which band 
warnings you want to receive alerts for, i.e. 10m, 6m, 2m etc etc.