According to the Swedish Transport Administration, the cause is the uncertainty with the weather and inspection of the routes.
Many canceled trains in the county
2020-02-25T06:35:20.694Z
All train traffic is canceled today until 14 pm on the routes Nässjö - Vaggeryd, Nässjö - Vetlanda, Nässjö - Hultsfred, Värnamo - Jönköping and Halmstad - Värnamo.
Source: svt