A Cyclone Evacuation Plan That Cannot Be Carried Out

Capacity

Three shelters × 300 = 900 places.

• Against the total population of 4,200: a shortfall of 3,300 places, or 79% of the panchayat unsheltered.
• Against the 1,850 vulnerable residents alone: a shortfall of 950 places, or 51% of that group unsheltered.

Even the minimum defensible requirement - shelter for everyone in the vulnerable group - cannot be met. The capacity does not fail at the margin; it fails by half.

What this does to the plan's wording

The sentence 'all people will move to the nearest shelter' is not a plan, it is a wish. It cannot be executed, and if circulated it will produce a crush at three doors. It must be replaced with an explicit allocation:

1. Priority 1 - the 1,850 vulnerable, allocated by name and village to a named shelter, with a reserve list.
2. Priority 2 - people in the surge zone below 2.6 m, in the strongest houses, who are moved to the remaining places.
3. Priority 3 - everyone else goes to identified vertical refuge: pucca two-storey buildings, school and panchayat buildings above the surge line, and the embankment only as a last resort and only for adults.

Also worth noting. 300 is a certification figure for floor area per person; it assumes people sit. At 4,200 people and three shelters, the shelters become nodes in a distributed plan, not the plan itself. The plan should be rewritten around the surge line, not around the shelters.

The timeline. The warning is issued at 10 a.m. with landfall at T+30, i.e. 4 p.m. the next day. Twelve hours before landfall is 4 a.m. - the middle of the night.

Why 12 hours fails

1. The creek village cannot move at T−12. Its 640 people must cross by boat or bridge. The bridge submerges above 1.8 m tide, and the forecast surge is 2.1–2.6 m on top of astronomical tide, so the bridge will be under water long before landfall, possibly within the first tidal cycle after the warning. Boats cannot be handled once wind speeds build; small craft are usually stopped well before gale force.
2. Rising wind closes the window gradually, not suddenly. Movement on foot and by vehicle becomes unsafe in the outer rain bands, which arrive hours before the centre. The usable window is much shorter than the nominal 12 hours.
3. Night movement is the wrong choice. Evacuation at 4 a.m. in a coastal panchayat with no lighting, in rain, with children and elderly people, is the classic cause of casualties in cyclone evacuations.

Standard practice. Evacuation should be completed about 24 hours before landfall - that is, by 4 p.m. on the day of the warning - with the exposed and the creek village moved first, in daylight. The 48/24/12/6-hour framework gives the sequence: 48 h for alerting and confirming shelters, 24 h to finish moving people, 12 h to secure and lock down, 6 h for everyone to be under cover.

For this panchayat. The creek village should begin crossing immediately, on the day of the warning, while the bridge and boats are still usable. The plan needs a stated trigger for the creek - 'cross on warning, not on hours' - because tide and bridge, not the clock, set its deadline.

The options, ranked

1. A creek crossing that works above 2.6 m, plus a standing boat-and-bridge protocol. This is the only option that addresses a group that has no route out under the current plan. 640 people, a 25-minute crossing, a bridge that drowns above 1.8 m and a surge forecast of 2.1–2.6 m - the failure is certain on exactly the days that matter. Highest lives per rupee.
2. Vertical shelters in the three unserved villages - raising or strengthening existing pucca two-storey buildings to certified refuge standard. Cheaper per place than a new shelter, and it fixes the 3,300-place shortfall at the point of need rather than 3 km away.
3. A fourth cyclone shelter. Useful, but ₹1.2 crore typically buys 300–500 places, against a shortfall of 3,300; it addresses roughly a tenth of the problem and takes three years to build. It is the politically visible answer, not the effective one.
4. Raising the embankment. Slow, expensive, and it creates a false sense of security in the years before it is finished; it also traps water behind it in a surge-overtopping event.
5. A public address system and drills. Cheap and necessary, but it moves information, not people.

First choice: option 1, with option 2 begun in parallel using the same funds where possible. The test of a disaster plan is not the number of shelters but whether the worst-placed group has a route that survives the forecast. Here it does not - and a creek village that cannot cross is a plan failure that can be identified today, before the next cyclone, rather than explained afterwards.

Condition. Whatever is funded, the plan must be rewritten with named allocations and a stated trigger for the creek; new infrastructure without those two lines changes nothing on the night.