LANDFALL SEASON WATCH
UPDATED —
FIELD CAMPAIGN · JUN–NOV 2026 · ATLANTIC BASIN

CAN THE 2026 SUPER EL NIÑO
KILL THE ATLANTIC HURRICANE SEASON?

A season-long observational study. A graph-neural-network weather model runs on this site's own server twice a day; NOAA ocean indices and National Hurricane Center storm data are pulled alongside it. Every panel below is evidence for or against one hypothesis — collected automatically, archived for the whole season.

ACQUIRING—
ENSO WATCH — NIÑO 3.4 WEEKLY ANOMALY °C
2026 VS THE TWO STRONGEST EVENTS ON RECORD · SOURCE: NOAA CPC OISST WEEKLY
2026 1997 (“EL NIÑO OF THE CENTURY”) 2015 (“GODZILLA”)
NIÑO 3.4 — RONI — ONI —

“Super” is not an official category — the strongest NOAA label is very strong, Niño 3.4 running ≥ +2.0 °C. The relative index RONI subtracts the tropics-wide warming trend and is the stricter yardstick in a warming ocean: when RONI and raw Niño 3.4 agree, the signal is real, not background warmth.

DATA TABLE
SEASON SCOREBOARD — THE SEESAW 2026 TO DATE
EL NIÑO SUPPRESSES THE ATLANTIC AND FUELS THE EAST PACIFIC · SOURCE: NHC BEST TRACK
STORM LOG
SHEAR LEDGER — MDR 200–850 hPa m/s
OBSERVED BY OUR OWN GNN, TWICE DAILY · MAIN DEVELOPMENT REGION 10–20°N 20–80°W

The mechanism El Niño uses to suppress hurricanes is vertical wind shear — and it is directly measurable. Every model run appends the analysis-time shear over the Main Development Region to this ledger; the dotted trace is the current 10-day model forecast. Sustained values above ~10 m/s are hostile to developing storms. This record grows for the rest of the season.

THE MECHANISM
  1. 01
    The seesaw. Trade winds normally pile warm Pacific water toward Indonesia. In an El Niño the trades weaken, the warm pool slides east, and the tropics' biggest heat engine — deep thunderstorm convection — moves with it.
  2. 02
    The ocean moved first. Repeated westerly wind bursts this spring launched downwelling Kelvin waves — slow subsurface pulses of warm water that crossed the Pacific and loaded the eastern basin with heat before the surface numbers caught up.
  3. 03
    The lawnmower. Displaced Pacific convection strengthens upper-level winds over the Caribbean and Atlantic. That difference between winds aloft and winds near the surface — vertical shear — tips developing storms over and slices their tops off. It is the single variable this site measures every day.
  4. 04
    The yardstick. El Niño is declared when the 3-month Niño 3.4 average holds ≥ +0.5 °C for five overlapping seasons; ≥ +2.0 °C is very strong. CPC's July 9 discussion: an El Niño Advisory is in effect, 97% odds it persists into spring 2027 — and the odds of a very strong event have climbed from roughly one-in-three this spring, to 63% in June, to 81% now.
IT ONLY TAKES ONE

1992 was a suppressed season: seven named storms. One of them was Hurricane Andrew — Category 5, ~$27B damage, 65 dead. A quiet season delivered one of the most catastrophic landfalls in U.S. history.

El Niño shear doesn't blow at full blast every day. When it relaxes for even a few days over a Gulf that stays bathtub-warm, storms can spin up close to land with far less warning than a long-track Cape Verde system. Below-normal is not the same thing as safe.

THIS SITE IS A RESEARCH EXERCISE — CONSULT NHC / NWS FOR ANY REAL DECISION.

FIELD NOTES
26 JUL 2026

Campaign start. The seesaw is already visible in the raw best-track files: the East Pacific has produced seven systems — two of them hurricanes spinning right now — while the Atlantic has managed two. Exactly the split a strengthening El Niño predicts.

26 JUL 2026

CPC's July 9 discussion raised the odds of a very strong event (Niño 3.4 ≥ +2.0 °C, Oct–Dec) to 81% — it was ~33% in spring and 63% in June. If the +3 °C model solutions verify, this becomes the strongest event in the modern record. Watch whether RONI keeps pace with the raw index.

26 JUL 2026

NOAA's seasonal outlooks frame the bet: Atlantic 55% below-normal (8–14 named / 3–6 hurricanes / 1–3 major) versus an East Pacific at 70% above-normal (15–22 named). The scoreboard above tracks both against reality through November 30.

SOURCES & INSTRUMENTS