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the claim

Norwester winds in India and Bangladesh are primarily caused by convective thunderstorm activity

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Norwester winds in India and Bangladesh are primarily caused by convective thunderstorm activity?

Yes. Norwester winds in India and Bangladesh, locally known as Kalbaishakhi, are severe pre-monsoon weather phenomena driven primarily by intense convective thunderstorm activity and atmospheric instability.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The analysis

The retrieved papers consistently characterize Nor'westers (pre-monsoon thunderstorms in eastern India and Bangladesh) as mesoscale convective systems driven by intense atmospheric convection and instability. Multiple papers utilize thermodynamic indices and convective modeling to analyze these storm events. No papers refute the claim.

Evidence for · 4
A satellite based study of pre-monsoon thunderstorms (Nor’westers) over eastern India and their organization into mesoscale convective complexes
2012
A satellite based study of pre-monsoon thunderstorms (Nor’westers) over eastern India and their organization into mesoscale convective complexes (2012) documents how these storms develop through intense convection and organize into convective systems over eastern India and Bangladesh.
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TYAGI, A., SIKKA, D., GOYAL, S., & BHOWMICK, M. (2012). A satellite based study of pre-monsoon thunderstorms (Nor’westers) over eastern India and their organization into mesoscale convective complexes. doi.org. https://doi.org/10.54302/mausam.v63i1.1446

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More for · 3
Comparison of thunderstorm simulations from WRF-NMM and WRF-ARW models over East Indian Region.
2012
Comparison of thunderstorm simulations from WRF-NMM and WRF-ARW models over East Indian Region (2012) notes that these Nor'westers are typical mesoscale systems driven primarily by intense convection.
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AJ, L., S, M. I., UC, M., & S, K. P. (2012). Comparison of thunderstorm simulations from WRF-NMM and WRF-ARW models over East Indian Region.. doi.org. https://doi.org/10.1100/2012/951870

Study of thermodynamic indices in association with pre-monsoon thunderstorms/Nor’westers over Northeast India during 2014-2018
2024
Study of thermodynamic indices in association with pre-monsoon thunderstorms/Nor’westers over Northeast India during 2014-2018 (2024) evaluates atmospheric instability and convective parameters associated with these severe pre-monsoon storms.
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Laskar, S. I., Kumar, G., & Kotal, S. D. (2024). Study of thermodynamic indices in association with pre-monsoon thunderstorms/Nor’westers over Northeast India during 2014-2018. doi.org. https://doi.org/10.29322/ijsrp.14.01.2023.p14511

Spatio-Temporal Variations of Thermodynamic Indices during Pre-Monsoon Season Thunderstorms over Eastern India
2021
Spatio-Temporal Variations of Thermodynamic Indices during Pre-Monsoon Season Thunderstorms over Eastern India (2021) analyzes convective indices and atmospheric instability linked to pre-monsoon Nor'westers.
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Sahu, R. K. & Tyagi, B. (2021). Spatio-Temporal Variations of Thermodynamic Indices during Pre-Monsoon Season Thunderstorms over Eastern India. doi.org. https://doi.org/10.1002/essoar.10509111.1

What does the evidence say?

The retrieved papers consistently characterize Nor'westers (pre-monsoon thunderstorms in eastern India and Bangladesh) as mesoscale convective systems driven by intense atmospheric convection and instability. Multiple papers utilize thermodynamic indices and convective modeling to analyze these storm events. No papers refute the claim.

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8504 Aug 2026
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