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Point and Click Forecast Description

Sample of the three gridpoint forecasts available
 
Using forecast elements from the National Digital Forecast Database (NDFD), forecasters at NOAA's National Weather Service are now able to provide three types of gridpoint based forecasts. In most areas the grid resolution is 3 miles (5km); however in mountainous areas a finer resolution is used, usually 1.5 miles (2.5km). Below is a description of the three types of gridpoint based forecasts available, and how to use them.
 
Note: The forecasts obtained by selecting a location on the map found on the home page are now dynamically created using the gridded forecast fields mentioned above. Therefore, these specific point forecasts are no longer "zone" or county based forecaster manipulated text products (although these forecaster manipulated text products are still produced and available on the internet). Therefore, carefully click on a location in the map and a specific forecast for that point will be created.

 


Forecast-at-a-Glance Features

The Forecast-at-a-Glance page provides current and forecast weather information directly from NOAA's National Weather Service. This page provides you with:

  • A quick overview of the expected weather for the next seven days.

  • A detailed, seven day forecast.

  • Links to the latest weather hazards in your area.

  • Current weather conditions near your location with links to weather history and other weather observation sites.

  • A quick glance (click to enlarge) of your local doppler radar image.

  • A quick glance (click to enlarge) of a satellite image.

  • A link to your local NWS Forecast Office as well as links to other information provided by that office.

 

Forecast-at-a-Glance Sample Forecast-at-a-Glance SampleForecast-at-a-Glance
One of the first things you will notice will be icons and a short one to three word forecast for your location of interest. This is intended to provide you a quick glance at the forecast. The time the forecast was issued is listed on the right side above the icons. The one or two word forecast is usually for the most hazardous weather anticipated during that forecast period. Should you see hazardous weather mentioned then check the detailed forecast for complete information.
Detailed Forecast Sample Hazardous Weather and the Detailed Forecast
The detailed forecast section serves two purposes. First, links are provided for all hazardous weather watches, warnings, advisories, and/or outlooks for your location. This section also provides the full text of the weather forecast for the next seven days.

 
Current Conditions Sample Current Weather Conditions
The latest weather conditions near your location are displayed along with the time of observation. When the air temperature is less than 60F, the wind chill value will be provided. For temperatures 60F or greater, the heat index displayed.
Two Day History is list of the weather for the past 48 hours at that location. From this summary you can also view the maximum and minimum temperatures as well as see the hourly, three-hourly, and six-hourly rainfall totals.
More Local Wx is a link to up to an additional 10 weather observation sites in the region. Clicking on any observation name will also provide a "Two Day History" for that site.
 
Doppler Radar and Satellite Images Sample Doppler Radar and Satellite Images
These thumbnail images give you a quick glance at any weather on your local doppler radar and an overview of the infrared Geostationary Operational Environmental Satellite (GOES) covering your region. Clicking either thumbnail will show the full image.

 
Additional Information Sample Additional Information SampleAdditional Information
These are links to provide additional relevant information and include; Zone Area Forecast for... ("zone" or county based forecaster manipulated text), Air Quality Forecasts, Printable and Text Only Forecasts, Hourly Weather Graph (see below), Tabular Forecast (see below), Forecast Discussion (technical reasoning behind the forecast), Hazardous Weather (Hazardous Weather Outlook which details potentially hazardous weather conditions over the next seven days), Past Weather Information, and other observation and forecast information. One additional link is located in the upper left area above the Forecast-at-a-Glance icons. This is the link to the local weather forecast office that issued the forecast.
 

Hourly Weather Graph Features

The Hourly Weather Graph (right) is an element-time look at weather conditions for the next 48 hours. If this forecast type is selected the user can also select which weather elements they would like to see the forecast for by selecting/de-selecting the weather element check boxes.

The following weather elements are presented in a linear format, tracing the changes on an hourly basis,
 
Temperature
Dewpoint
Relative Humidity
Sky Cover
Wind Chill (seasonal)
Heat Index (seasonal)
Wind Direction/Speed
Probability of Precipitation


Special note concerning wind speed and direction
In addition to the linear trace of the magnitude of the wind, the wind direction is also shown using what is called a "wind barb". The wind barb is always point in the direction that the wind is coming from. The magnitude of the wind on a wind barb is calculated using the attached flags at the end of the wind barb. A long wind flag is 10 mph, a short wind flag is 5 mph, and a triangle wind flag is 50 mph. So, if you see a wind barb with two long flags and one short flag on it, the forecast wind speed would be 25 mph.

The following weather elements are presented in bar graph format, giving the chances for each type of weather event categorically.
 
Rain
Thunder
Snow (seasonal)
Freezing Rain (seasonal)
Hourly Weather Graph Sample


Tabular/Digital Forecast Features
The Tabular/Digital Forecast (right) provides hourly forecast information
in tabular format for weather conditions in the next 120 hours. If this forecast type is selected the user can also select which weather elements they would like to see the forecast for by selecting/de-selecting the weather element check boxes.

The following weather elements are presented in a tabular format on an hourly basis,

Temperature
Dewpoint
Relative Humidity
Sky Cover
Wind Chill (seasonal)
Heat Index (seasonal)
Wind Direction/Speed
Probability of Precipitation
Rain
Thunder
Snow (seasonal)
Freezing Rain (seasonal)
Tabular/Digital Forecast Sample

 

National Weather Service
Eastern Region Headquarters
630 Johnson Avenue
Bohemia, NY 11716

Webmaster: erhwebmaster@noaa.gov
Page Last Modified: May 31, 2005

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