Аннотация:Macroscopic quantum entanglement is intriguing phenomenon, the theory of which is still in its infancy. Heuristic consideration of the matter in the framework of action-at-a distance electrodynamics predicts for some processes observability of the advanced nonlocal correlations (time reversal causality). For diffusion entanglement swapping the effective time shifts can be very large. These correlations with greater magnitude than usual retarded ones were really revealed in our previous experiments. Moreover the possibility of the forecast of large-scale heliogeophysical random processes on macroscopic nonlocal correlations had been proven. However the laboratory experiment is difficult because of problem of nonlocal correlation detector shielding against the classical local impacts. Since 2012 a new experiment has been performing on the base of Baikal Deep Water Neutrino Observatory. The thick water layer is an excellent shield against any local impacts on the detectors. A couple of nonlocal correlation detectors, measuring spontaneous variations of self-potential difference between weakly polarized electrode pair, were installed at the depths 52 and 1216 m. The bottom detector works under conditions of perfect thermostating and stability of all other environment parameters. Any classical correlations between top and bottom detector signals are impossible. Processing of the first annual time series has revealed rather strong correlation between the signals of bottom, top and spaced at 4200 km laboratory detector in Troitsk. The detectors respond to the external (heliogeophysical) processes, and the signal causal connection, revealed by causal analysis turned out directed downwards – from the Earth surface to Baikal floor. But this nonlocal connection proved to be in reverse time – the bottom detector responds earlier than the top one, and top one earlier than surface one. Another result is uncovered nonlocal correlation of the detector signal with a regional source-process – the variation of subsurface (22 m) temperature. The temperature is a cause with respect to detector signal, but this nonlocal causal connection is time reversal. The possibility of the temperature forecast with advancement 45 days has been demonstrated.