Sri Lanka, Feb. 17 -- The Meteorology Department has issued a Heat Index Advisory for Northern, North-central, North-western, Western and Southern provinces and Rathnapura district, effective for tomorrow (Feb 18).

Heat index, the temperature felt on human body is expected to increase up to 'caution level' at some places in Northern, North-central, North-western, Western and Southern provinces and Rathnapura district, it said.

As per the advisory, under the 'Caution' level of temperature, fatigue is possible with prolonged exposure and activity while continuing activity could result in heat cramps.

Thus, the members of the public are advised to stay hydrated, take breaks in the shade as often as possible and limit strenuous outdoor act...