| HOME | ARCHIVES | FORECASTS | IMAGERY | ABOUT NHC | RECONNAISSANCE |

REMNANTS OF OTIS (Text)


Home   Public Adv   Fcst Adv   Discussion   Wind Probs   Graphics   Archive  


1-2-3 Rule


Hurricane Wind Speed Probability
Hurricane Wind Speed Probability

0 12 24 36 48 60 72 84 96 108 120 hours Loop
50-knot Wind Speed Probability
50-knot Wind Speed Probability
0 12 24 36 48 60 72 84 96 108 120 hours Loop
Trop Storm Wind Speed Probability
Tropical Storm Wind Speed Probability

0 12 24 36 48 60 72 84 96 108 120 hours Loop

About this product:

Note: The time of the tropical cyclone's center location at the bottom of the graphic will be 3 hours earlier than the time of the current advisory. The forecast cycle for each advisory begins 3 hours prior to the issuance of the advisory products.

These graphics show probabilities of sustained (1-minute average) surface wind speeds equal to or exceeding 50 kt (58 mph). These wind speed probability graphics are based on the official National Hurricane Center (NHC) track, intensity, and wind radii forecasts, and on NHC forecast error statistics for those forecast variables during recent years. Each graphic provides cumulative probabilities that wind speeds of at least 58 mph will occur during cumulative time periods at each specific point on the map. The cumulative periods begin at the start of the forecast period and extend through the entire 5-day forecast period at cumulative 12-hour intervals (i.e., 0-12 h, 0-24 h, 0-36 h, ... , 0-120 h). An individual graphic is produced for each cumulative interval, and the capability to zoom and animate through the periods is provided. To assess the overall risk of experiencing winds of at least 58 mph at any location, the 120-h graphics are recommended.

These probabilities will be updated by the NHC with each advisory package for all active tropical cyclones in the Atlantic and eastern North Pacific basins. While separate graphics are focused on each individual tropical cyclone, probabilities resulting from more than one active tropical cyclone may be seen on each graphic.

It is important for users to realize that wind speed probabilities that might seem relatively small at their location might still be quite significant, since they indicate that there is a chance that a damaging or even extreme event could occur that warrants preparations to protect lives and property.

Additionally, these probability products are available on the National Weather Service's National Digital Forecast Database (NDFD) graphical tropical webpage.


Standard version of this page

Alternate Formats
About Alternates - E-Mail Advisories - RSS Feeds

Cyclone Forecasts
Latest Advisory - Past Advisories - About Advisories

Marine Forecasts
Latest Products - About Marine Products

Tools & Data
Satellite Imagery - US Weather Radar - Aircraft Recon - Local Data Archive - Forecast Verification - Deadliest/Costliest/Most Intense

Learn About Hurricanes
Storm Names Wind Scale - Prepare - Climatology - NHC Glossary - NHC Acronyms - Frequently Asked Questions - AOML Hurricane-Research Division

About Us
About NHC - Mission/Vision - Other NCEP Centers - NHC Staff - Visitor Information - NHC Library

Contact Us


NOAA/ National Weather Service
National Centers for Environmental Prediction
National Hurricane Center
11691 SW 17th Street
Miami, Florida, 33165-2149 USA
nhcwebmaster@noaa.gov
Disclaimer
Privacy Policy
Credits
About Us
Glossary
Career Opportunities
Page last modified: Wednesday, 25-Oct-2023 21:29:41 UTC