What I Looked Up About Aandhi and IMD’s Weather Categories

Why I looked up आंधी

I wanted to understand what to look for when a weather search starts with आंधी. Rather than turn that word into a prediction, I looked for the categories used by the India Meteorological Department (IMD).

This is a note about what I found in official material—not a report of weather I experienced, or a claim that a storm is approaching Varanasi.

The distinction that helped me

IMD’s forecasting and warning SOP, in its nowcasting sections on thunderstorms and duststorms, treats them as separate categories.

The thunderstorm classification uses maximum surface wind speed and gusts. The duststorm classification combines wind speed with visibility reduced by dust. That second condition is what caught my attention: a duststorm category is not simply a different name for a wind-speed band.

For example, the SOP describes a moderate duststorm using wind speeds of 41–61 km/h together with visibility of 200–500 metres due to dust. Its moderate thunderstorm entry uses maximum surface winds of 41–61 km/h, in gusts. The similar numbers do not make the two entries interchangeable.

My takeaway is to preserve the whole description. Picking out a wind speed while dropping the dust-related visibility condition would change what the duststorm entry says.

My checklist for reading the result

I put together this reading checklist from the SOP and IMD’s Lucknow district-wise nowcast page. It is my synthesis, not an official safety checklist.

What I would check	What I would avoid assuming
The named phenomenon: thunderstorm or duststorm	That a broad search word identifies the official category
The complete category description	That wind speed alone explains a duststorm classification
The district covered by the issued warning	That a district-wise warning applies throughout Uttar Pradesh
The issued warning’s stated time coverage	That a classification document establishes tomorrow’s weather

These checks separate two questions I had initially bundled together: what does this weather term mean, and what is forecast for a particular place? The SOP helps with the first. A relevant issued warning is needed for the second.

What I looked up next

Because Varanasi was part of my question, I also looked for an Uttar Pradesh-specific official source. The IMD page I found is headed Meteorological Centre Lucknow and “District wise Nowcast warnings”.

That establishes the purpose of the page, but it does not by itself establish a current warning for Varanasi. I am not quoting a district alert, an arrival time or a forecast for tomorrow here.

The useful result of this small lookup was a change in how I would read the next warning: start with the named phenomenon, retain its conditions, and then check whether the issued warning actually covers the place and period I am asking about.