I thought making maps of GPS/GNSS interference might turn out boring. But 3 days ago suddenly the Baltic (Poland, Lithuania, Latvia, Kaliningrad) started having some of the most significant interference on the planet, after weeks of nothing unusual. Why now?
This data comes from ADS-B Exchange. You can see a real time map of aircraft reporting degraded GNSS at globe.adsbexchange.com/?badgps
And today all the new GNSS interference in that region is completely gone.
I was told by @latewiksi and @LauriTalve there were reports of aircraft in Finland experiencing GPS issues. Here's a map shifted north a bit, showing a couple regions of potential interference the past couple days.
"GPS interference near Finland's eastern border - planes forced to return to Tallinn and several flights from Savonlinna canceled" [Google translation] svenska.yle.fi/a/7-10013895
Confirmed, a few days later: "Finland detects GPS disturbance near Russia's Kaliningrad"
reuters.com/article/ukrain…
Actually a NOTAM seems to have been issued on March 7. "GPS INTERFERENCE DETECTED IN THE EASTERN PARTS OF HELSINKI FIR. AFFECTED AREA SECTOR N, SFC-FL200". Looks to me like both sectors L and N were affected.
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