GPS jamming map of the Baltic Sea

The Baltic today

From flights on 7 November 2026, 29.5% of the monitored areas in the Baltic Sea showed interference (568 of 1,926), 220 of them high. The region page has the day's detail.

The Baltic Sea region page has the full picture: the share of monitored areas affected, the most affected named places, the altitude layers, the "Over time" chart since the series began and the worst day on record. Its background quotes, with sources, the statements of Finland's Traficom, Estonia's and Latvia's authorities, Poland's and the Nordic regulators, and EASA.

Where it concentrates

The Gulf of Finland, between Helsinki and Tallinn, where aircraft on the approaches to both capitals have reported lost accuracy on most days since late 2023. The approaches to Kaliningrad and the Polish and Lithuanian coasts beside it, where the sharpest edge on the whole map sits. The eastern Baltic from Riga to the Estonian islands. And on some days a band reaching across southern Sweden and the Danish straits. The country pages give each its own count: Finland, Estonia, Latvia, Lithuania, Poland, Sweden, Denmark, Germany and Norway.

Reading the Baltic picture

Nowhere on the map is interference seen from altitude more clearly. A transmitter near a coast is visible to aircraft at cruise for two hundred kilometres or more, so the red hexagons lie over the sea and the flight corridors, not over the transmitter. The altitude tables on the country pages show the loss sitting in the high layers over open sea and reaching lower near Helsinki and Tallinn. A single day's share moves with traffic and with what the transmitters are doing, so for change look at the chart on the region page and the day pages it links. The map doesn't attribute; the authorities quoted on the region page do.

Ships and the ground

The map counts aircraft, and the Baltic is also a sea of ships. A transmitter that reaches aircraft at cruise two hundred kilometres away reaches a ship only to the horizon, so the sea areas marked red here are not a map of where ships lose position. The maritime authorities of Finland, Estonia and Sweden have published their own warnings, and the region page cites them. Mobile networks and timing on land are affected differently again, since the signal is blocked by terrain the aircraft can see over. Read this map as what the airspace saw: a wide, high view of transmitters whose exact position it can't give, on a day whose figures won't change once saved, and which can be compared with any other day under days.

The same map framed on the whole continent is the GPS jamming map of Europe. It can be embedded on this view with one line of HTML.