Nine Regions, One El Niño: Where the Drought Risk Is Real, and Where the Rain Is Still Falling

Open the drought section of the dashboard and the first impression is a wall of warm colors: elevated and moderate risk from South Asia to the semi-arid Brazilian interior. It looks alarming. It is also only half the story. A risk map tells you the odds that a region's El Niño drought signal fires this cycle. It does not tell you whether the rain has actually stopped falling yet. So this post puts the two side by side, region by region, and the gap between them is the whole point.

What the Tracker Actually Measures

Each region card carries three numbers, and keeping them straight matters. The first is a modeled risk, a probability that the region's characteristic El Niño drought (or, for a couple of places, flood) signal materializes this cycle. The second is that region's peak severity during the 1876-79 Great Drought, a fixed historical worst case for calibration. The third is the observed rainfall anomaly from CHIRPS, the satellite-plus-station rainfall product from the Climate Hazards Center, updated with roughly a two-week lag. The latest values here are for the window ending June 30.

The single most important habit when reading this: risk is not outcome. A 62 percent modeled risk is not a forecast that drought will happen. It is closer to a weather-scale probability, and the honest test is whether the region's decisive rainy season, once it arrives, verifies it.

The Split Screen: Deficit Here, Downpours There

As of the June 30 CHIRPS update, the observed picture divides cleanly into two groups. Three regions are already running severe rainfall deficits. Three are running above normal. The rest sit near normal or are the wrong season to read yet. That divergence, elevated risk across the board but a split on the ground, is exactly what you would expect early in an El Niño, before most of the affected rainy seasons have started.

Already Dry: Brazil's Nordeste, Southern Africa, the Horn

These are the regions where the rain gauges have already turned negative.

• Northeast Brazil (moderate risk, 58 percent): CHIRPS shows a severe deficit, near total rainfall failure for the late-June window. The important caveat is seasonal: the Nordeste's decisive wet season is February to May, so a June reading falls in the natural dry season and the large percentage sits on a small baseline. The real test comes with the next wet season. The 1876-79 analog here is the Grande Seca, the Great Drought that emptied rivers and reservoirs across Ceará, Pernambuco and Piauí.
• Southern Africa (moderate risk, 50 percent): a severe deficit reading now, though this too is the dry season ahead of the November to March rains that feed maize and sorghum across Zimbabwe, Mozambique, Zambia and South Africa. This is the region to watch when the summer monsoon arrives.
• Horn of Africa (watch, mixed signal): a severe deficit in the current window, and the forecast picture is genuinely split. Regional climate outlooks flag a high likelihood of below-normal rain for the northern Horn through the June to September season, with probabilities above 60 percent over parts of Ethiopia. But the October to December short rains are forecast wetter than normal, because El Niño and a positive Indian Ocean Dipole tend to enhance those short rains rather than suppress them. Drought now, potential flood risk later, is not a contradiction. It is the Horn's split signal.

Wetter Than the Map Suggests: India, Northern China, Eastern Australia

Here the modeled risk is elevated but the current rain gauges are running the other way.

• South Asia / India (elevated risk, 62 percent): CHIRPS shows above-normal rainfall for the latest window, a notable swing given that India opened June as its fifth-driest since 1901. The monsoon is the textbook El Niño casualty, but it is also volatile week to week, and a wet late-June window does not erase an elevated seasonal risk. Watch the July and August totals, not any single dekad.
• Northern China (moderate risk, 52 percent): above normal now, off a very small climatological baseline for the period, which is why the percentage looks enormous. The 1876-79 benchmark here is the catastrophic North China Famine, a reminder of the downside if the Yellow River basin rains fail, but the current reading is not that.
• Eastern Australia (moderate risk, 60 percent): above normal in the current window, which is austral winter. El Niño is the single strongest predictor of drought here, but the pressure comes in the warm season. Our Australia drought and bushfire post covers what to watch as spring builds.

The Flip Side: Peru's Floods and Indonesia's Slow Burn

Two more regions round out the map, and neither is a simple drought story.

• Peru and Ecuador coast (flood watch, 62 percent): this is El Niño's birthplace, and the coastal signal is flood, not drought. Warm water displaces the cold upwelling, and the stronger the event, the more extreme the coastal rainfall. The current CHIRPS window reads near normal, so the flood risk is loaded but not yet firing.
• Indonesia and SE Asia (elevated risk, 65 percent): near normal right now, but this is the region where El Niño displaces the warm pool and convection eastward, drying the Maritime Continent and raising fire risk. It is already showing up, as our Indonesia fire season post lays out. Near normal today does not mean low risk as the dry season deepens.

The ninth card, North America in winter, is not a drought signal at all. It tracks winter warming, El Niño's tendency to push milder, storm-track-altered winters across the northern United States and Canada. Its CHIRPS field is still awaiting data, and its story is warmth, not failed rain.

About That 1876-79 Column

The historical benchmark deserves care, because it is the part most likely to be misread. The 1876-79 Great Drought, tied to one of the strongest El Niño events in the record, produced concurrent multiyear droughts across Asia, Brazil and Africa. The resulting Global Famine is estimated to have contributed to more than 50 million deaths, on the order of three to four percent of the world's population at the time, with Monsoon Asia the hardest hit. It is a real event and a legitimate calibration point for how severe a regional teleconnection can become.

It is not a forecast. The column exists to answer "how bad has this region's El Niño drought ever gotten," not "how bad will it get in 2026." Two honest caveats belong with it. First, the instrumental estimate of the 1877 event's magnitude is genuinely contested: raw reconstructions run hot, while bias-adjusted estimates are more moderate, so the exact numbers carry real uncertainty. Second, the human toll of 1876-79 was as much about colonial policy, grain markets and the absence of relief systems as it was about rainfall. The rain was the trigger. The death toll was a policy outcome. Modern early-warning and relief systems are the reason a comparable rainfall shock today would not carry a comparable human cost.

Why This Framing Matters

The mainstream coverage this year has leaned hard on the 1877 comparison, and the question "could this match the event that killed millions" has already run in major outlets. It is a fair question to ask and a dangerous one to answer with a map color. The responsible version keeps three numbers apart: the odds, the historical worst case, and what the rain gauges actually show today. Right now those three do not line up, and that is not reassurance or alarm. It is just the current state, honestly reported. Track it yourself on the drought dashboard, and watch the live indices that drive it on our teleconnections dashboard.