Today, massive cumulonimbus clouds will form in western and central Bulgaria mostly, where many places will see brief at times heavy rain showers and thunderstorms, hail is also expected, meteorologist Boryana Markova of the National Institute of Meteorology and Hydrology (NIMH) told Focus New Agency.,

Sunny weather will prevail across eastern Bulgaria, with some temporary clouds gathering but only isolated showers with thunder expected. The wind will change to a light to moderate north-northwest wind, brining cool air.

Temperatures will drop but the Upper Thracian Lowland and the far southwest areas will still be hot. Prevailing maximum temperatures will range widely from 26-27C in northwestern Bulgaria and in high fields to 34-36C in southeastern areas.