The colors of autumn are deepening.

Currently, Mt. Seorak and Mt. Odae have reached their peak foliage, with over 80 percent of the mountains covered in autumn leaves.

News of the first autumn foliage is also coming in from other famous mountainous areas.

Today (October 17), as long as you watch out for the large temperature differences, it will be a great day to enjoy an autumn outing.

Strong rain and wind are expected nationwide tomorrow.

Rain will pour down heavily at a rate of 20 to 30 millimeters per hour.

The expected rainfall for tomorrow is quite heavy for autumn rain, with up to 80 millimeters in the Seoul metropolitan area, Chungcheong, and Jeonbuk regions; up to 70 millimeters in the inland areas of Gangwon; and as much as 60 millimeters in other regions.

Gusts of wind and lightning may also accompany the rain, so you should be mindful of facility management and safety accidents.

Tomorrow's morning temperatures will start at 17°C (63°F) in Seoul and Ulsan, while daytime temperatures in Seoul will stall at 21°C (70°F), about 5 degrees lower than today.

In the middle of next week, morning temperatures in Seoul are forecasted to plunge to 4°C (39°F), marking the chilliest weather so far this autumn.

(Weathercaster Lim Eun-jin)