Event is active. Trigger: season deviation -33.6% <= -25.0%; crop stress 61 >= 60 with basin deficit -33.6%

Metrics — at open vs latest

MetricAt open (2026-08-26)Latest (2026-08-31)Source
Season rainfall deviation-29.7%-33.6%ERA5/Open-Meteo vs 1991-2020 normal
Historical percentile17.712.5rank among 1991-2020 seasons, same day-of-season
Crop supply-stress score64/10061/100MonsoonMandi composite (see methodology)
Median modal pricen/a3800 Rs/qAgmarknet via data.gov.in
Price change w/wn/a-3.2%Agmarknet via data.gov.in

Arrivals: not assessed — no free public arrivals source currently exists (state is recorded as missing, never estimated).

Season rainfall — cumulative vs normal

Reference-mandi price

MandiDistrictModal (2026-08-31)
Pimpalgaon Baswant APMCNashikRs 4250
Dindori(Vani) APMCNashikRs 4151
AGRICULTURE PRODUCE MARKET COMITEE CHANDWADNashikRs 4050
Yeola APMCNashikRs 4000
Lasalgaon(Vinchur) APMCNashikRs 3900
Pimpalgaon Baswant(Saykheda) APMCNashikRs 3850

Assessment

possibleOne basin shows stress (-33.6%) while another is near normal (3.2%) and prices are steady (-3.2% w/w) — less-stressed producing regions may be absorbing localized supply stress. Arrivals data is not yet available from a free source, so this check uses rainfall and price only.

Other producing basins for onion

Nashik belt (MH): 3.2%, Malwa: Indore-Ujjain-Dewas (MP): -17.2%

localizedStress is localized: Kurnool (AP) (-33.6%), Malwa: Indore-Ujjain-Dewas (MP) (-17.2%) in deficit while Nashik belt (MH) sit near or above normal — less-stressed regions may partly offset, based on available evidence. Untracked buffers not assessed here: Gujarat (Bhavnagar) and stored rabi stock also buffer onion supply; not tracked.

Transmission lag

Estimated from 15 historical seasons: median 10 days to a sustained price response (range 1-26; confidence medium). Descriptive, not a forecast.

Historical analog seasons

In 0 of 1 comparable seasons with price data, Kurnool onion prices rose 10%+ within 12 weeks of this point in the season. Historical description, not a forecast.

SeasonSimilaritySubsequent price moveWeeks to peak
201840.00.0%0.3
200134.9n/an/a
199333.1n/an/a

Timeline

DateDeviationStressMedian Rs/q
2026-08-26-29.7%654100
2026-08-27-32.2%653689
2026-08-28-32.5%653349
2026-08-29-32.8%683701
2026-08-30-33.1%693701
2026-08-31-33.6%613800

The "at open" snapshot is frozen and never rewritten by later data. Rainfall: ERA5 via Open-Meteo (CC-BY 4.0) vs 1991-2020 normals — not official IMD figures. Prices: Agmarknet via data.gov.in (GODL-India). This is a data record, not advice.