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Telangana State Heatwave Action Plan 2021 — Heat Stress Alert Levels

The Telangana State Heatwave Action Plan 2021 (signed) restates IMD's national heat-wave criteria and assigns departmental duties. Its Yellow/Orange/Red alerts are defined by how long heat-wave conditions PERSIST, not by temperature bands, so no colour is derivable from a single day's maximum. The Labour, Employment, Training and Factories Department is to direct employers to reschedule outdoor workers away from peak hours, run awareness camps, coordinate worker health check-ups and ensure drinking water for construction workers; the Panchayati Raj Department is to set up shelters for MGNREGA and construction workers and reschedule their hours.

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Governing metric
Daily maximum ambient air temperature (C) against IMD's absolute heat-wave criteria. No colour alert is emitted, because the plan's colours key on persistence rather than temperature.
Authority
Government of Telangana, Revenue (Disaster Management) Department; public-health elements co-issued with the Directorate of Public Health & Family Welfare
Jurisdiction
Telangana India
Legal status
Guidance
Published
2021
Rule type
Alert Overlay
Standard ID
HGC-130

Check a reading against this rule

This rule has no numeric trigger the calculator evaluates — it states duties and control measures rather than a threshold a reading can be checked against. Its measures are listed below.

Governing formula

No standalone formula is published for this standard; see programmable logic and parameters below.

Alert levels

ParameterValue
outdoorWorkerAvoidStartHour12
outdoorWorkerAvoidEndHour15

The 12:00-15:00 window is page 34's 'Direct employers to reschedule working hours for outdoor workers to avoid peak hours (12 Noon to 3 PM)'. Page 58 states '11pm - 3pm' for the same duty, an evident typo for 11am-3pm; the discrepancy is recorded rather than silently repaired, and if 11am were intended the window would be an hour more protective.

NO COLOUR-ALERT TEMPERATURE BANDS ARE STORED, deliberately: the plan keys Yellow/Orange/Red to how long heat-wave conditions persist, not to temperature, and the 41-44 C Orange band that appears in press coverage is not the plan's own taxonomy. The IMD criteria live in FORMULAS.IMD_HEATWAVE_CRITERIA, shared across the three Indian state HAP engines.

Programmable logic

Classifies the day's maximum temperature against IMD's absolute criteria and returns the plan's departmental worker actions. alertColour is deliberately always null: the plan defines Orange as a severe heat wave persisting 2 days or a non-severe one persisting 4 or more, and Red as a severe heat wave persisting more than 2 days or more than 6 heat-wave days in total, so a single day's reading cannot produce a colour.

The 41-44 C Orange band reported in press coverage is not the plan's own taxonomy and is not encoded. Hidden when outdoorWorker is explicitly false. Never produces work/rest minutes or stop-work.

Inputs

Required inputs: maxTempC

Optional inputs: outdoorWorker

Sources

Update history