India Metereology Deparemtnt’s Ahmedabad centre has announced Heat Wave alert for the city on 10-11-12 March. The bulletin issued by IMD Ahmedabad.
Severe Heat wave criteria:
When maximum temp. departure from normal ≥ 6.5 deg. C & maximum temperature ≥ 40 deg C
Or When actual maximum temp. ≥ 47.0 deg. C
Heat wave criteria:
When maximum temp. departure from normal ≥ 4.5 deg. C & maximum temperature ≥ 40 deg C
Or When actual maximum temp. ≥ 45.0 deg. C
Probability of occurrences:
Unlikely: less than 25 % Likely: 25-50%
Very Likely: 50 to 75%
Most likely: 75 to 100%
Levels
Yellow: 41.1-43 deg.c
Orange: 43.1-44.9 deg.C
Red: ≥45.0 deg.C