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WINTER FOG EXPERIMENT (WiFEX)
INDIAN INSTITUTE OF TROPICAL METEOROLOGY, PUNE, INDIA
भारतीय उष्णदेशीय मौसम विज्ञान संस्थान, पुणे, भारत
Ministry of Earth Sciences, Govt. of India

Fog forecast has been stopped and will be continued during next winter, However, real-time observations are available in observations page
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Visibility Forecast
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Observation
Near Realtime Observation At Delhi
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Forecast
Fog Forecast

Bulletin & Message

IMD FDP Fog Bulletin (16th Feb 2020)


Precipitation and Hailstorm:

 

  • A fresh Western Disturbance is very likely to affect Jammu & Kashmir, Ladakh, Gilgit - Baltistan and higher reaches of Himachal Pradesh from 18th February 2020 night. Under its influence, light Isolated to scattered rainfall/snowfall activity very likely over these regions during 18th-19thFebruary, 2020.
  • In quick succession, another Western Disturbance very likely to affect Western Himalayan Region & adjoining plains from 20th February. Under its influence, an induced cyclonic circulation is very likely to develop over southwest Rajasthan on 20th February with high moisture feed from the Arabian Sea at lower & mid tropospheric levels.
  • Under its influence light/moderate fairly widespread to widespread rain/snowfall very likely over Western Himalayan Region and scattered to fairly widespread rainfall over Punjab, Haryana, Chandigarh & Delhi during 20th & 21st February, 2020. There is possibility of isolated heavy falls over Himachal Pradesh and Uttarakhand on 21st February.
  • Due to interaction between warm & moist lower level easterlies (from anti-cyclonic circulation over Northwest Bay of Bengal) and middle & upper level westerlies (due to Western Disturbance), isolated to scattered rain/thundershower is also likely over Uttar Pradesh and north Madhya Pradesh on 20th & 21st and over north Chhattisgarh & Bihar on 21st February, 2020.
  • Strong wind (speed 20-30 kmph) likely over Punjab, Haryana, Chandigarh & Delhi and West Uttar Pradesh on 20th & 21st February, 2020.
  • Detailed forecast & warnings for the above systems are as follow:

Sub-Divisions

18 Feb. 2020*

19 Feb. 2020*

20 Feb. 2020*

21 Feb. 2020*

Jammu & Kashmir

Rain/snowfall at  isolated places

Rain/snowfall at a few  places

Rain/Snowfall at many places  with thunderstorm accompanied with lightning at isolated places

Rain/Snowfall at many places  with thunderstorm accompanied with lightning at isolated places

Himachal Pradesh

Dry

Rain/snowfall at  isolated places

Rain/Snowfall at most places  with thunderstorm accompanied with lightning at isolated places

Rain/Snowfall at most places with isolated heavy falls and thunderstorm accompanied with lightning at isolated places

Uttarakhand

Dry

Rain/snowfall at isolated places

 

Rain/Snowfall at many places  with thunderstorm accompanied with lightning at isolated places

Rain/Snowfall at most places with isolated heavy falls and thunderstorm accompanied with lightning at isolated places

Punjab

Dry

Dry

Rain at a few places  with thunderstorm accompanied with lightning at isolated places

Rain at most places  with thunderstorm accompanied with lightning at isolated places

Haryana, Chandigarh & Delhi

Dry

              Dry

Rain at isolated places  with thunderstorm accompanied with lightning at isolated places

Rain at many places  with thunderstorm accompanied with lightning at isolated places

West Uttar Pradesh

Dry

Dry

Rain at isolated places  with thunderstorm accompanied with lightning at isolated places

Rain at a few places with thunderstorm accompanied with lightning at isolated places

East Uttar Pradesh

Dry

Dry

Rainfall at isolated places

Rain at a few places with thunderstorm accompanied with lightning at isolated places

West Rajasthan

Dry

Dry

Rainfall at isolated places

Rainfall at isolated places

 

Note: * Rainfall till 0830 IST of next day. 

 

  Fog:

 

  • Considering RH, wind speed & temperature inversion layer at lower levels and NWP model products for FOG, No significant dense fog likely in north India during next 4-5 days.

Cold wave & day:

  •  Fall in minimum temperatures by 2-3°C over Punjab and Haryana during next 2-3 days. No significant change in temperatures over rest of the country during next 3-4 days.
  •  Considering minimum temperatures & its trend, no cold wave conditions would occur over northern India. 

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Mid Visibility IGIA
Forecast
Current AQI
X

Visibility Range

CAT - IIIC

VISIBILITY: Below 50 M

CAT - IIIB

VISIBILITY: FROM 50M TO 174M

CAT - IIIA

VISIBILITY: FROM 175M TO 299M

CAT - II

VISIBILITY: FROM 300M TO 549M

CAT -I

VISIBILITY: 500M AND ABOVE

X

Air Quality Index Range

Good

AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.

Satisfactory

AQI: Satisfactory (51 - 100)
Air quality is considered satisfactory, and air pollution poses little or no risk.

Moderate

AQI: Moderate (101 - 200)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Poor

AQI: Poor for Sensitive Groups (201 - 300)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.

Very Poor

AQI: Very Poor (301 - 400)
Health alert: everyone may experience more serious health effects.

Severe

AQI: Severe (401 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.

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