For May 12, 2026 NIMH issues first degree warning (yellow code) for thunderstorms, heavy showers and hail for 18 districts in Central and Eastern Bulgaria.For May 13, 2026 NIMH issues first degree warning (yellow code) for strong wind for Northern and Eastern Bulgaria, and the Upper-Thracian plain. Wind will be from west-northwest, with average speed 14-19 m/s and gusts up to 24 m/s.