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NHC Frequently Asked Questions (FAQ)

Outreach Resources |Glossary |Acronyms |FAQ

Where can I find information about...?

Hurricane Analyses and Forecasts (Analyses & Forecasts ➙ Tropical Cyclone Products)

Marine Analyses and Forecasts (Analyses & Forecasts ➙ Marine Products)

Tropical Weather Outlooks (Analyses & Forecasts ➙ Tropical Weather Outlook)

Podcasts (Analyses & Forecasts ➙ Audio/Podcasts)

RSS Feeds (Analyses & Forecasts ➙ RSS Feeds)

GIS Products (Analyses & Forecasts ➙ GIS Products)

Links to Satellite Imagery (Supporting Data & Tools ➙ Satellite Imagery)

Aircraft Reconnaissance Data (Supporting Data & Tools ➙ Aircraft Reconnaissance)

Tropical Atmospheric and Oceanic Analysis Tools (Supporting Data & Tools ➙ Tropical Analysis Tools)

Experimental Products (Supporting Data & Tools ➙ Experimental Products)

Latitude/Longitude Distance Calculator (Supporting Data & Tools ➙ Lat/Lon Distance Calculator)

Blank Hurricane Tracking Maps (Supporting Data & Tools ➙ Blank Tracking Maps)

Hurricane Preparedness Week (Educational Resources ➙ Prepare!)

National Hurricane Center Outreach Programs (Educational Resources ➙ Outreach Documents)

Storm Surge (Educational Resources ➙ Storm Surge)

Tropical Storm and Hurricane Watch/Warning Breakpoints (Educational Resources ➙ Watch/Warning Breakpoints)

Tropical Cyclone Climatology (Educational Resources ➙ Climatology)

Tropical Cyclone Names (Educational Resources ➙ Tropical Cyclone Names)

Tropical Cyclone Reports (Archives ➙ Tropical Cyclone Reports)

Tropical Cyclone Forecast Verification (Archives ➙ Tropical Cyclone Forecast Verification)

Data Archives, including HURDAT, Seasonal Track Maps, Text Products (Archives ➙ NHC Data Archive)

Visiting the National Hurricane Center (About NHC ➙ Visiting NHC)

The Joint Hurricane Testbed (Quick Links and Additional Resources Footer: Research and Development – Joint Hurricane Testbed)

The NHC Library (Quick Links and Additional Resources Footer: Other Resources – NHC/AOML Library Branch)

The National Hurricane Operations Plan (Quick Links and Additional Resources Footer: Other Resources – National Hurricane Operations Plan)

NHC Amateur Radio (WX4NHC) (Quick Links and Additional Resources Footer: Other Resources – WX4NHC Amateur Radio)

Where can I find forecasts for tropical cyclones in the Central Pacific / Western Pacific / Indian Ocean / Southern Hemisphere?

The National Hurricane Center is responsible for issuing forecasts for all tropical cyclones in the North Atlantic and Northeast Pacific (East of 140W) basins. For information about tropical cyclones around the world, refer to ourWorldwide Tropical Cyclone Centers webpage.

Can I have a tropical cyclone named for me?

We do not control the naming of tropical storms. Instead, alist of names has been established by an international committee of theUnited Nations World Meteorological Organization. For Atlantic hurricanes,there is actually one list for each of six years. Inother words, one list is repeated every seventh year. The only time thatthere is a change is if a storm is so deadly or costly that the future useof its name on a different storm would be inappropriate for obvious reasonsof sensitivity. If that occurs, then at an annual meeting by the committee(called primarily to discuss many other issues) the offending name isstricken from the list and another name is selected to replace it. See here for more information:https://public.wmo.int/en/our-mandate/focus-areas/natural-hazards-and-disaster-risk-reduction/tropical-cyclones/Naming.

Where can I find more information on Storm Surge and SLOSH?

NHC now has a dedicated section onStorm Surge. More information on SLOSH and obtaining the software can be found in theSLOSH section of those pages.

I can't seem to get the latest information from the website. Can youhelp?

There are a few common problems that can keep you from getting the latestinformation.See this page for some suggestions on troubleshooting before you contactus. If you're unsure on when the next advisory is scheduled to bereleased, note that the time is given at the bottom of the latest Public Advisoryand the Forecast/Advisory, both linked from the NHC homepage. Also seeourHurricane Preparedness section on thetropical cyclone forecasting process.

How do I understand the advisories? Where can I get definitions of theterminology used in them?

Start with these help pages:

We also offer two Glossaries and a list of commonly used acronyms andabbreviations:

The latter is an extensive list of weather-related terms.

What is UTC or GMT Time?

See here for more details:

UTC/GMT Time Explanation

I heard that there is a tropical cyclone somewhere in theAtlantic / Caribbean / Gulf of America / Eastern Pacific. How can I find out if I am at risk?

What you need to do is to go back to theNHC homepage (click on theNational Hurricane Center title logo at the top of the page for a shortcutback) and look at the graphics for each storm that's currently active to seeif it looks like it may be headed your way. Read the latest advisories formore information.

Also note that if you live in the United States and atropical cyclone is threatening your part of the coastline then the localNWS Weather Forecast Offices will issue Hurricane Local Statements if theirareas are threatened. These Hurricane Local Statements will also be linkeddirectly from the NHC homepage as appropriate for each storm. From themyou can find detailed local information tailored specifically for yourarea. We also offer a list of the official Emergency Management websites ona per-state basis from the NHC homepage (look for the"Visit your stateEM Office" under the Hurricane Preparedness logo on the homepage).

Can you help me with a homework or research question?

Possibly, but note that during the hurricane season we are extremely busy.This means that we probably will not be able to get to your question forsome time (and that can be days to weeks depending on what's going on in thetropics). Withthat in mind, here are some excellent sources ofinformation on tropical cyclones that may help you find your answers:

NWS Weather Education (classroom materials, images, graphics)
Hurricane Preparedness
NHC Archive of Past Hurricane Seasons
The Deadliest, Costliest, And Most Intense
The NOAA Office for Coastal Management Historical Hurricane Tracks web site

Also note the links in the two sections on the left side of this page, in the blue bar,underLearn About Hurricanes andHurricane History for even moreinformation.

How are the watch/warning breakpoints decided?

See ourbreakpoints description for more information.

Does NHC provide model graphics?

The National Hurricane Center does not generate a graphic of the guidance models it uses to produce its forecasts. See themodel information page for more information.

US Dept of Commerce
National Oceanic and Atmospheric Administration
National Hurricane Center
11691 SW 17th Street
Miami, FL, 33165
nhcwebmaster@noaa.gov

Central Pacific Hurricane Center
2525 Correa Rd
Suite 250
Honolulu, HI 96822
W-HFO.webmaster@noaa.gov

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