Atlantic Hurricane Season Peacefulness Analyzer

Source: Ars Technica Climate Wire Accumulated Cyclone Energy (ACE) Model
Climatological Presets
Atmospheric Baselines
Environmental Drivers Suppression High
Sea Surface Temp (SST) Anomaly -0.8 °C
Main Development Region (MDR) anomaly relative to 1991–2020 baseline. Warmer waters feed cyclone heat engine.
Vertical Wind Shear 24.5 kts
200–850 hPa shear across the Caribbean & tropical Atlantic. Shear >20 kts tears developing eyewalls apart.
Mid-Level Relative Humidity 42.0 %
700–500 hPa layer moisture. Saharan Air Layer (SAL) intrusions create dry air caps preventing deep convection.
Why the season turns quiet: As highlighted in meteorological analyses, anomalous upper-level winds combined with dry Saharan air masses can completely stifle tropical cyclogenesis despite warm waters elsewhere.
Accumulated Energy (ACE)
34.2
-72% vs Normal
Named Storms
5
14.4 is Normal
Hurricanes
2
7.2 is Normal
Major Hurricanes (Cat 3+)
0
3.2 is Normal
Atlantic Basin Cyclogenesis & Track Density Risk Map
Tropical Storm
Hurricane (Cat 1-2)
Major Hurricane (Cat 3+)
Hostile Shear Barrier
Simulated trajectory tracks adapt in real time to ambient vertical shear and moisture gradients. State: Peaceful Season

Season Classification & ACE Distribution

This simulation exhibits profound tropical suppression. High vertical wind shear (>24 kts) continuously dismantles organized convection in the Main Development Region, capping overall seasonal ACE at 34.2.

Extremely Suppressed / Peaceful
Peaceful / Low
< 73
Near Normal
73-126
Above Normal
126-160
Hyperactive
> 160

Atmospheric Factor Sensitivity

Contribution of environmental anomalies to final ACE deviation from the 1991–2020 climatological average (122.5 ACE):

SST Thermodynamic Forcing: -18.4 ACE
Vertical Wind Shear Suppression: -49.8 ACE
Mid-Level Dry Air Deficit: -20.1 ACE
Net Simulated Season ACE: 34.2 ACE
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