In brief

• IMGW has issued a level I fog warning for eastern and south-eastern Poland.
• The alert runs from 20:00 on 27 October to 10:00 on 28 October.
• Visibility may fall below 200 metres in places, with frost forming overnight.
• Authorities urge drivers to slow down and avoid unnecessary travel.

Warning covers seven voivodeships

The warning applies to the Podlaskie, Lublin, Subcarpathian and Lesser Poland voivodeships, as well as eastern parts of the Warmian-Masurian, Masovian and Świętokrzyskie regions (Widzialność ograniczona do 200 metrów. Ostrzeżenie IMGW przed gęstą mgłą – rmf24.pl). Forecasters expect a thick milky layer to settle over these areas, with the alert taking effect at 20:00 on 27 October (Mleczna pułapka nad Polską. IMGW wydaje pilny alert I stopnia, widzialność spadnie do kilkudziesięciu metrów - Warszawa W Pigułce – warszawawpigulce.pl).

Timing of the fog

The warning is set to run until 10:00 on 28 October. Dense fog is expected to persist through the night and into Wednesday morning, when visibility may remain at its lowest levels.

Risks on the roads

In some areas visibility could fall below 200 metres. Drivers face the greatest danger during the night and early morning hours, when frost may also form on road surfaces. Officials advise reducing speed to match conditions and avoiding unnecessary trips while the alert is active.

Level I warning explained

A level I warning is the lowest of the institute's alert categories, yet it still signals that hazardous weather may cause material damage and pose a risk to health and life.

Key figures

| Parameter | Value | |---|---| | Alert start | 27 October, 20:00 | | Alert end | 28 October, 10:00 | | Visibility in places | below 200 m | | Voivodeships covered | 7 (4 full, 3 partial) |