Sun reaches overhead Kerala: oppressive heat index to continue

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Sun reaches overhead Kerala: oppressive heat index to continue

By: Reghu Ram

kerala hot weather condition expected to continue coming week due to Sun reaches overhead.
maximum day temperature may remain high with increase in the percentage of relative humidity.

Maximum day temperature likely to be above normal by 1-3 degrees in Kottayam, interior Ernakulam, Thrissur, Palakkad, Kozhikode, Malappuram, Pathanamthitta, Kollam and Kannur districts and remain around 35°C to 38°C. Palakkad, and Punalur continued to share the hottest maximum day temperature with 39.5°C followed by , Kottayam , Kozhikode, at 36.8°C.

Due to a line of wind discontinuity (LWD) and convergence, and part of easterly waves combined with cross equatorial flow at south west Arabian sea, light to moderate thundershowers are likely over Trivandrum and Kollam districts, eastern parts of Pathanamthitta district on 29th March and over Ernakulam district on 30th March.

Isolated showers in south kerala

Except isolated showers over the southern districts, generally the oppressive heat index would continue in Kerala till April 4th. As currently there could be an amplitude of MJO pulse from March 29th till April 2nd week, as the MJO transits its Indian ocean phase 2&3, I am expecting upper air cyclonic circulation and wet spell for Kerala intermittently from 29th March upto 10th or 12th April.

Ideally, the inter tropical convergence (ITCZ) should be over Kerala sometime after the Sun reaches overhead Kerala around Vishu date (April 14th the thermal equator) and this would create the ideal conditions for tropical lows and convective cells to develop over Kerala resulting in more thundershowers.

Dry Weather in North Kerala

In kerala current and previous week, light to moderate rains occurred in southern districts and eastern parts of Pathanamthitta, Sabari Hills, pockets like Painav, Kattapana, Peermed, Kumily, and eastern parts of Kottayam district. But humidity levels continued to rise. Generally dry conditions prevailed in Tamil Nadu and northern parts of Kerala.

Hill Station Temperature also increasing

In Tamil Nadu hill station of Ooty the day temperature rose up to 26°C on 27/3/24 It was 22.6°C in Kodaikanal. The minimum in both these hill stations was around 11.6°C to 12°C. But in certain pockets in these hills higher maximum and minimum have been recorded as the undulating terrain and altitude are major factors affecting daily weather in hill stations.

The hill station of Valparai in Tamil Nadu recorded a maximum of 33°C and a minimum of 19°C. In Yercaud it was 33°C and 19°C respectively. In Kolli hills the maximum was 30°C and the minimum was at 18°C.

In Kerala, hill stations like Munnar, Kanthalloor, Vattavada and Devikulam minimum temperature generally remained at 14°C -17°C. The maximum day temperature in Munnar was around 27°C, while the minimum was 17°C. In Kanthalloor & Vattavada the maximum was at 21°C -22°C and the minimum, was around 15°C -16°C.

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