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Check back during an active storm for satellite imagery.
Current MJO / BSISO phase + 60-day Wheeler-Kiladis-filtered OLR Hovmöllers. Active TCs are projected onto each Hovmöller as a vertical longitude trace so you can see whether a storm is riding a convective envelope or wave.
Pre-season and intra-season SST evolution from OISST v2.1, anchored against the 1991-2020 climatology and historical annual ACE (1982-present, NHC).
Scrub through any past TC season with the chosen ERA5 environmental field underneath and IBTrACS storm tracks materializing as the time slider advances. All daily-archive variables (shear, level winds, vorticity, divergence) read the 00Z synoptic snapshot — no daily-mean smearing of transient features. Storms remain on the map after landfall as long as they retain a true-TC nature (TS/TD/HU/TC/SS/SD); they fade once classified extratropical or dissipated. Anomaly mode subtracts the 1991-2020 climatology so you see how a given season's environment compared to normal at each time step.
Pixel-wise Pearson correlation between monthly SST and annual basin ACE (1982-present). Red = warm SST coincides with active seasons; blue = warm SST coincides with quiet seasons. Toggle raw vs detrended to separate shared long-term warming from year-to-year coupling.
Top-10 historical analogs to the target year/month. Grid-weighted by |r| (default and recommended) compares the full SST anomaly field pixel-by-pixel, weighting each pixel by its absolute correlation with the chosen basin's ACE — no region definitions and no overlap. The other two methods operate on the 14 fixed region-mean values (which have some overlap, e.g. Atl basin contains MDR); use them if you want a faster mental model or to compare.
| # | Year | Distance | NA ACE | Storms |
|---|
For the selected target year + month, each historical year's region-mean SST anomaly vector is compared to the target's vector. Smaller distance = more similar SST pattern.
Correlation-weighted distance:
d = √Σ wᵢ · (anomᵢ - target_anomᵢ)²,
where the weight wᵢ = |r(SST_region_i, ACE_basin)|
is the absolute Pearson correlation between region i's
monthly SST and the chosen basin's annual ACE
(1982-present). Regions with little linkage to ACE
(small |r|) contribute little. Weights are
re-computed per basin × month × raw|detrended.
Derived from the same OISST record as Panels A-E. ENSO horizontal markers at ±0.5 °C anomaly are the conventional El Niño / La Niña thresholds. AMM proxy = North Tropical Atlantic SST anomaly − Tropical South Atlantic SST anomaly (sign-of-the-gradient version of Vimont & Kossin 2007).
Aircraft reconnaissance flight-level data — USAF (30-s HDOB) & NOAA (1-s) tracks, dropsondes, and VDM center fixes — time series synced to an interactive map, updating in real time.
Recent NOAA P-3 Tail Doppler Radar missions from the HRD real-time archive. Select a mission to open it in the TDR viewer.
Browse and visualize real-time Tail Doppler Radar analyses from NOAA P-3 reconnaissance missions.
Full-sortie in-situ (IWG1) & SFMR time series from the NOAA P-3 reconnaissance data stream. Select a mission to load its flight-level traces.
Decoded center fixes, minimum sea-level pressure, and peak flight-level / surface winds from NHC reconnaissance VDMs (REPNT2 / REPPN2). Select an active storm to load its messages.