• GRAPHICAL FORECAST PRODUCTS
• WATCHES & WARNINGS
•
GRAPHICAL FORECAST PRODUCTS
• WATCHES & WARNINGS
The
table below lists the main hurricane forecast products issued by the National
Hurricane Center and the local National Weather Service Forecast Office. Click
any of the products listed in the table to go to an explanation and example
of that product.
In general, the NHC provides products that have a broad view of the hurricane
and its potential impacts, while the local forecast office (the WFO) takes the
information from NHC and tailors it to their specific locale, providing the
public and local emergency managers with additional information about the hazards
expected in their area.
4-times Daily TROPICAL WEATHER PRODUCT |
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Tropical
Weather OUTLOOK
is intended for the general public and describes the state of the tropics.
It includes a discussion of areas of disturbed weather and their potential
for development over the next 48 hours. |
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6-hour Forecast Suite of TROPICAL CYCLONE PRODUCTS |
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Tropical
cyclone PUBLIC ADVISORIES are intended
for the general public and describe the storm and its expected hazards.
They are also used to issue watches & warnings. |
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| Tropical
cyclone FORECAST/ADVISORIES
provide forecasts of the wind fields around the storm (formerly known as
the Marine Advisory). • Issued every 6 hours or as needed by the NHC |
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| Tropical
cyclone DISCUSSIONS are meant primarily
for other forecasters, but are useful because they provide insight into
the forecaster's reasoning and confidence. • Issued every 6 hours or as needed by the NHC |
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| Tropical
cyclone TEXT WIND SPEED PROBABILITY FORECASTS
and GRAPHICAL WIND SPEED PROBABILITY FORECASTS
provide probabilities of surface wind speeds of at least 34 kt (39 mph, tropical storm force), 50 kt (58 mph),
and 64 kt (74 mph, hurricane force) at several locations along the coastlines of the United States and other
countries in the Atlantic and eastern North Pacific basins. • Issued every 6 hours or as needed by the NHC |
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As Needed TROPICAL CYCLONE PRODUCTS |
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HURRICANE
LOCAL STATEMENTS describe expected local impacts. |
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| INLAND
WATCHES & WARNINGS provide information about tropical storm
or hurricane-force winds at inland locations. These are of particular interest
to those that are vulnerable to High Winds. • Issued as needed by your local NWS forecast office (see menu at bottom of page). |
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| HPC PUBLIC
ADVISORIES provide information about the tropical system once it has
made landfall and the National Hurricane Center has passed responsibility
to the Hydrometeorological Prediction Center (HPC).
The storms are referred
to by the intensity they had when the HPC took responsibility. The public
advisories include information about expected rainfall which is particularly
important those that are vulnerable to inland flooding. • Issued 4 times daily by the HPC when conditions are warranted. |
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| Tropical
Cyclone Updates are brief statements issued by the NHC in lieu of or preceding
special advisories to report significant changes in a tropical cyclone. • Issued as needed by the NHC. |
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| Special
Tropical Disturbance Statements reference the potential for torrential rains
and give information about strong formative and nondepression systems. • Issued as needed by the NHC. |
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| Tropical
Cyclone Position Estimates. Issued between 2-hour intermediate Public
Advisories when a reliable center is displayed on land-based radar.
Normally, this is the case when a storm center is within 200 nautical miles
of U.S. land-based radar and sufficient and regular radar reports are available
to the NHC. • Issued as needed by the NHC. |
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