The National Hurricane Center provides authoritative guidance on the Dorian track, combining satellite data, model consensus, and local observations. These updates help emergency managers and the public understand potential landfall scenarios, wind impacts, and rainfall risks.
Accurate forecasting for a storm like Dorian relies on real-time data assimilation, ensemble spread, and continuous collaboration with partner agencies. The following sections detail watch and warning products, forecast graphics, and community readiness measures tied to the latest official track guidance.
| Forecast Metric | Current Value | Units | Source |
|---|---|---|---|
| Official Track Error | 12 | Hours 24-Error | NHC Verification |
| Maximum Sustained Winds | 120 | Knots | Latest Advisory |
| Central Pressure | 954 | Millibars | Reconnaissance |
| 3-Day Forecast Cone | 350 | Square Miles | NHC Graphic |
Tracking Methodology and Real-Time Model Guidance
Model Consensus and Statistical Guidance
Dorian track forecasts integrate the Hurricane Weather Research and Forecasting model, the Global Forecast System, and statistical–dynamical guidance. The National Hurricane Center evaluates biases, intensity trends, and steering patterns to refine the official track cone.
Steering Currents and Synoptic Pattern
Midlevel ridges and tropical waves steer Dorian through the Atlantic basin. Forecasters monitor 500-mb heights and sea level pressure gradients, translating these signals into probabilistic landfall scenarios and timing adjustments.
Watch, Warning, and Product Updates
Advisory Cadence and Experimental Graphics
The center issues updated Tropical Weather Outlooks, Public Advisories, and Wind and Rainfall Graphics. Experimental map layers display probabilistic storm surge and rainfall inundation, improving communication for emergency managers.
Coordination with National Centers for Environmental Prediction
Model output from the National Centers for Environmental Prediction feeds into the NHC consensus. Local National Weather Service offices convert NHC track guidance into coastal and inland hazard thresholds, streamlining decision thresholds for evacuations.
Historical Context and Event Comparison
Similar Intensity Landfalls and Structural Evolution
Examining past storms with comparable pressure and forward speed helps contextualize potential impacts. The table below highlights key metrics that inform risk communication for communities in the projected path.
| Event | Year | Category at Landfall | Reported Impacts |
|---|---|---|---|
| Bahamas Landfall | 2019 | 5 | Extreme Wind Damage, Storm Surge |
| U.S. Southeast Event | 1999 | 2 | Coastal Flooding, Rainfall Floods |
Risk Communication and Public Preparedness
Cone of Uncertainty and Timing Shifts
The track cone represents the average official error over the past five years. Residents should focus on each new forecast rather than fixating on the precise center line, as hazards like surge and wind can occur outside the cone.
Evacuation Zones and Sheltering Strategies
Local officials use NHC forecast products to designate evacuation zones. Understanding your zone, assembling an emergency kit, and reviewing family communication plans significantly reduce vulnerability.
Community Readiness and Next Steps
- Monitor NHC public advisories and track graphics at set intervals each day
- Confirm your evacuation zone and shelter options with local officials
- Maintain an emergency kit with three days of water, nonperishable food, and medications
- Protect property by reviewing insurance coverage and mitigation measures
- Stay informed through trusted local media and official social media channels
FAQ
Reader questions
How often does the National Hurricane Center update the Dorian track?
Tropical cyclone advisories are issued every six hours, with intermediate updates when significant changes in the Dorian track or intensity occur.
What does the forecast cone for Dorian actually represent?
The cone illustrates the probable path of the storm center, based on historical track error statistics, and does not depict storm size or all possible hazards.
Should I focus on wind speed or rainfall when preparing for Dorian?
Both are critical; prioritize life safety by heeding evacuation orders for storm surge and inland flooding, which cause the most fatalities in landfalling hurricanes.
Where can I verify official Dorian track information before making plans?
Refer directly to the National Hurricane Center website and local National Weather Service offices for the latest official advisories and experimental guidance.