PRESS RELEASE: RAINFALL/THUNDERSTORM WITH HAILSTORM ACTIVITY LIKELY OVER NORTHWEST INDIA ON 03 APRIL AND SIGNIFICANT REDUCTION THEREAFTER.

Press Release: Rainfall with thunderstorm/hailstorm over Western Himalayan Region & East India today, the 01st April and a over Northeast India on 01st & 02nd April

Press Release: Updated Seasonal outlook for Hot weather Season (April to June) 2023 and Monthly Outlook for April 2023 for the Rainfall and Temperature

प्रेस विज्ञप्ति: गर्मी के मौसम (अप्रैल से जून) 2023 के लिए अद्यतन ऋतुनिष्ठ दृष्टिकोण और वर्षा और तापमान के लिए अप्रैल 20

Virtual Press Conference on “Updated outlook for hot weather season (April, May & June) and for the month of April 2023”

Current Weather Status and Extended Range Forecast for next two weeks (30th March-12th April 2023)

Press Release: Current Weather Status and Extended range Forecast for next two weeks (23March-5 April 2023)

Press release on Climate Summary for the month of February 2023

प्रेस विज्ञप्ति : गर्म मौसम (मार्च से मई) 2023 के लिए ऋतुनिष्ठ दृष्टिकोण तथा मार्च 2023 के लिए वर्षा और तापमान हेतु मासिक

PRESS RELEASE ON SEASONAL OUTLOOK FOR HOT WEATHER SEASON (MARCH TO MAY) 2023 AND MONTHLY OUTLOOK FOR MARCH 2023 FOR THE RAINFALL AND TEMPERATURE:

Spokesperson of IMD to brief press and electronic media on weather forecasting.

Recruitment of Scientific Assistant in IMD

Monsoon Information

Monsoon Activity

(A) Criteria for describing activity of southwest monsoon
Descriptive term Specification
Weak Monsoon Rainfall less than half the normal.
Normal Monsoon Rainfall half to less than 1½ times the normal (Mention of "normal" monsoon may not be necessary in general).
Active Monsoon
  1. Rainfall 1 ½ to 4 times the normal.
  2. The rainfall in at least two stations should be 5 cm, if that sub-division is along the west coast and 3 cm, if it is elsewhere.
  3. Rainfall in that sub-division should be fairly widespread to widespread.
Vigorous Monsoon
  1. Rainfall more than 4 times the normal.
  2. The rainfall in at least two stations should be 8 cm if the sub-division is along the west coast and 5 cm if it is elsewhere.
  3. Rainfall in that sub-division should be fairly widespread or widespread.
Subdued Monsoon
  1. Spatial distribution of rainfall remains dry, isolated or scattered for two consecutive days.
  2. Mean actual rainfall of that particular sub-division remains less than the normal for the consecutive two days.
  3. The Forecast issued for the next 48 hrs on the particular day for the sub-division is also dry, isolated or scattered. Upon satisfying all the above criteria simultaneously, monsoon activity be described as subdued on the second day.
Notes:
  1. While describing the activity of the monsoon:
    1. The normals of stations, whenever available should be used.
    2. Till normals for all the stations are available the following procedure should be adopted:
       Number of stations in a sub-division with normals  - a
       Normal for these stations -  b
       Average normal for the sub-division -  b/a
       Total number of stations reporting rainfall  - c
       Actual total rainfall reported by these stations  - d
       Therefore, the average rainfall for the sub-division -  d/c
       Compare d/c with b/a and describe the activity of the monsoon accordingly, other conditions being fulfilled.
      													
  2. In the sub-divisions, where the percentage of hill stations is high, the hill stations must be also taken into account for describing the activity of the monsoon. In other sub-divisions, the hill stations will be excluded.
  3. The monsoon activity will be described in all the sub-divisions of northeast India as is done for sub-divisions of other regions.
  4. The monsoon activity need not be described over the Bay Islands and the Arabian Sea Islands.
(B) Criteria for describing the activity of Northeast Monsoon.
Descriptive term Specification
Weak Monsoon Rainfall less than half the normal.
Normal Monsoon Rainfall half to less than one and a half (1½) times the normal.
Active Monsoon
  1. Rainfall 1½ to 4 times the normal.
Vigorous Monsoon
  1. Rainfall in that sub-division should be fairly widespread to widespread.
  2. Rainfall in at least two stations should be 5 cm in coastal Tamil Nadu and south coastal Andhra Pradesh and 3 cm elsewhere.
  3. Rainfall in that sub-division should be fairly widespread or widespread.