File photo.

(SL Shanth Kumar/TOI, BCCL)

Tuesday, May 24: While several parts of the country have experienced multiple pre-monsoon rain spells in the past two months, East India has remained relatively dry and warm. But of late, wet weather has brought some respite from the blistering heat to the region, and this rainfall activity will continue for the next 24 hours.

As per the forecasts issued by The Weather Channel’s met team, a cyclonic circulation over Odisha, a trough extending from this cyclonic circulation to Meghalaya across Uttar Pradesh, Bihar and West Bengal; and humid winds blowing in from the Bay of Bengal will collectively increase the moisture over Indo Gangetic plains and create wet weather across the East Indian region.

Accordingly, the India Meteorological Department’s (IMD) has made the following rainfall predictions over East India:

● Scattered to fairly widespread showers of light to moderate intensity over Bihar, Jharkhand, Gangetic West Bengal and Odisha on Tuesday

● Isolated heavy rainfall over Odisha on Tuesday

● Thunderstorms, lightning and gusty winds (speed 40-50 kmph) at isolated places in Bihar, Odisha and Jharkhand

● Reduction in rainfall activity from Wednesday, with only isolated drizzles on horizon

In view of these forecasts, the IMD has issued an orange alert over Jharkhand, West Bengal and Odisha for Tuesday so as to urge locals to “be prepared” for the inclement weather.

A yellow watch has been placed on Bihar for Tuesday and Bihar, Jharkhand, West Bengal and Odisha for Wednesday, advising individuals “be updated” on the rainfall activity.

As for district-level alerts, an orange alert has been issued over Jharkhand’s Bokaro, Chatra, Deoghar, Dhanbad, Dumka, East Singhbhum, Garhwa, Giridih, Godda, Gumla, Hazaribag, Jamtara, Khunti, Koderma, Latehar, Lohardaga, Pakur, Palamu, Ramgarh, Ranchi, Seraikela, Simdega, West Singhbhum and Sahibganj districts on May 24.

Meanwhile, this ongoing rainfall activity over East India has prevailed since the weekend. On Monday, May 23, rainfall and thundershowers lashed isolated parts of Bihar, Jharkhand and Gangetic West Bengal, while thunderstorms were observed over Bihar and Odisha.

The daytime temperatures remained above normal (by 1.6°C to 3°C) in West Bengal, but the wet conditions did manage to pull down the mercury levels below the normal (by 1.6°C to 3°C) in most parts of Bihar and Jharkhand.

As far as the seasonal precipitation is concerned, between March 1 to May 23, Bihar (71 mm) and Gangetic West Bengal (138 mm) have seen “normal” rains, with the former registering an excess of 13% and the latter witnessing 11% lesser rainfall than the average.

On the other hand, Jharkhand (53 mm) and Odisha (71 mm) suffered deficient precipitation, as they recorded 69% and 110% lesser rainfall than their respective normal figures for the pre-monsoon period.

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