Severe heatwave continues across Rajasthan and Central India, but a fresh Western Disturbance is set to trigger widespread pre-monsoon showers and sharp drop in mercury

Relentless heatwave conditions that have pushed northern and central India into a virtual furnace are expected to break by Friday. The India Meteorological Department (IMD) has forecast widespread pre-monsoon rainfall activity across 15 states between May 29 and June 5, bringing a much-needed respite from the prolonged, grueling summer.

The change in weather comes on the heels of record-shattering temperatures. On Wednesday, Sri Ganganagar in Rajasthan emerged as the hottest location nationwide, registering a blistering maximum temperature of 48.2°C. Local authorities across northern states have been struggling to manage the public health fallout, with massive water shortages reported in parts of Delhi and municipalities using smog guns to spray water onto roads in Jaipur to lower ground radiation.

Massive dust storms and orange alerts

A fresh Western Disturbance moving across the western Himalayan region is expected to alter the atmospheric dynamics significantly. The IMD has already placed 32 districts of Bihar under an orange alert, predicting severe thunderstorms accompanied by lightning and gusty winds reaching speeds up to 60 kmph.

In Rajasthan, where cities like Bikaner and Jaisalmer crossed the 46°C mark on Wednesday, the regional meteorological center has issued rain and thunderstorm warnings for 11 districts, including the capital city of Jaipur. Ground-level cues indicate a rapid shifting of wind patterns from hot, desert-fueled northwesterlies to moisture-laden easterlies, which will likely trigger heavy dust storms across Punjab, Haryana, and western Uttar Pradesh by Thursday evening.

Suspected heatwave deaths trigger alarm

The sheer intensity of this late-May heatwave has turned fatal in parts of Central India. In Maharashtra’s Nagpur, where the mercury touched 46°C earlier this week, hospital mortuaries have seen a sudden influx of bodies. Over the last three days, at least 16 bodies—mostly unidentified or homeless individuals—were recovered from railway station platforms, open roadsides, and beneath flyovers.

Civic officials and railway police suspect severe heatstroke and dehydration as the primary causes, though formal medical audits are ongoing. “Special cooling wards have been activated at government hospitals for hyperpyrexia treatment, and we are working to move vulnerable populations to shelter homes,” a senior civic official from the Nagpur Municipal Corporation said.

Monsoon delay intensifies pre-monsoon systems

The current escalation of the pre-monsoon weather systems is partly linked to the delayed arrival of the southwest monsoon over the mainland. While the IMD had initially expected the monsoon to hit the Kerala coast by May 26, weak moisture currents and an unstable cyclonic circulation over the south-central Arabian Sea slowed its progress.

According to data from the European Centre for Medium-Range Weather Forecasts (ECMWF), atmospheric indicators now point to an abrupt surge in moisture over South India, East India, and the Bay of Bengal. This atmospheric build-up is acting as fuel for the severe convective storms expected to sweep through central and northern plains over the coming weekend.

Significant drop in mercury by weekend

The weather timeline for May 29 indicates that while western pockets of Rajasthan will continue to face isolated heatwave pockets, vast swathes of Punjab, Delhi, and Uttar Pradesh will see temperatures plunge by 3°C to 6°C.

By May 30, the cooling effect will extend to the hill states. Both Uttarakhand and Himachal Pradesh are slated to receive intense hailstorms and squalls, causing a sharp dip in down-valley temperatures. Local administrations in the high-altitude tourist hubs have already issued advisories warning travelers of localized disruptions due to sudden lightning strikes and strong winds.

A punishing heatwave has tightened its grip across Madhya Pradesh, with 45 cities reeling under soaring temperatures on Tuesday, the second day of the traditional Nautapa period. State capital Bhopal and several other regions woke up to a blazing sun and blistering winds, severely impacting normal life, even as weather officials dropped hints of impending relief with pre-monsoon showers expected later this week.

Red Alert in Five Districts

According to officials from the India Meteorological Department (IMD), a severe heatwave red alert remains active for Niwari, Tikamgarh, Chhatarpur, Panna, and Satna districts. Currently, Khajuraho and Nowgong in the Chhatarpur district are recorded as the hottest spots in the state, with maximum temperatures consistently breaching the 45-degree Celsius mark.

While major urban centres like Bhopal and Gwalior continue to struggle under severe heatwave conditions, southern and western patches including Indore and Narmadapuram divisions recorded marginal drops in temperature, offering brief respite from the extreme heat.

Desolate Roads and Scorching Winds

The ground-level impact of the rising mercury was visible across major towns by late Tuesday morning. In Ashoknagar, the maximum temperature touched nearly 44°C, driving residents indoors. "By midday, vehicular movement and pedestrian traffic on major roads dropped by more than half. People are venturing out only for unavoidable tasks, wrapping their faces in cotton scarves," reported a local trader from the city.

Similar scenes played out in Dhar and Agar Malwa. In Dhar, where the morning temperature started at a warm 25.6°C, the mercury climbed rapidly to 43°C by noon, leaving busy marketplaces virtually deserted. Strong, dry winds blowing at nearly 19 km/h aggravated the discomfort for daily wage earners and commuters.

Healthcare Facilities Feel the Strain

The harsh weather has exposed infrastructural gaps in public health facilities across the state. In Gwalior's Kamla Raja Hospital, patients and their attendants faced harrowing times due to malfunctioning ceiling fans and an inadequate number of water coolers. Relatives were seen cooling patients with hand-held paper fans, while many sat under trees in the hospital courtyard to escape the stifling indoor humidity.

Meanwhile, at the Charak Hospital in Ujjain, families of patients took matters into their own hands. Relatives brought personal coolers and table fans from home to place beside hospital beds. When questioned about the arrangement, hospital management claimed they had recently procured 25 new coolers for the 24 wards and were fixing faulty air conditioners, adding that they had not officially permitted private cooling equipment inside the premises.

Historic Nautapa Rain Pattern

Despite the intense heat, historical data indicates that Nautapa—the nine hottest days of summer—frequently witnesses brief spells of rain in the state capital. Over the last 14 years, Bhopal has recorded rainfall during this specific period seven times, with minor drizzle on two other occasions. This year followed a similar trend, as parts of Bhopal, Umaria, and Damoh experienced sudden cloud cover and light drizzle on Monday evening, briefly interrupting the intense heat before temperatures rose again on Tuesday.

Pre-Monsoon Arrival Dates Announced

The current severe heatwave conditions are projected to persist for the next 48 hours, after which a shifting weather pattern is expected to bring widespread relief. The regional meteorological center confirmed that a western trough passing through the region is likely to trigger pre-monsoon activity across Madhya Pradesh by May 28.

Weather scientists have issued an alert for rain, thunderstorms, and lightning across 14 districts spanning Gwalior, Chambal, Sagar, and Jabalpur divisions on Thursday, signaling a gradual transition away from the peak summer heat.