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Update - 09/22/2008

 

 

Prototype Digital Forecasts
 Graphical Forecasts - National Digital Forecast Database
Southern California     Southwest     National
 
 Point Forecasts
Southwest California
 
 Graphical Forecasts - Southwest California (2.5 km resolution)
 Forecast Field   Forecast Period
Maximum Temperature
NonLoop    Loop
Each day for 7 days for the period from 7 AM until 7 PM PST .
Minimum Temperature
NonLoop    Loop
Each night for 7 nights for the period from 7 PM until 8 AM PST.   The day on the graphic is the morning on which the forecast period ends.
Temperature (3-hourly)
Non-Loop    Loop
Every 3 hours through 2 days.
Relative Humidity (percent),
and Wind (knots) (3-hourly)

Non-Loop    Loop
Every 3 hours through 2 days.
Wind direction and speed (3-hourly)
Non-Loop    Loop
Surface Wind Direction and Speed (knots) every 3 hours through 2 days.
Cloud cover and wind (3-hourly)
Non-Loop    Loop
Opaque cloud coverage (in percent) and Surface Wind Direction and Speed (knots) every 3 hours through 2 days.
Rainfall Amounts (6-hourly)
Non-Loop    Loop
Each 6-hour period through 2 days.   The time on the graphic is the time at the end of each 6-hour period.
Flash Flood Potential Index 
Non-Loop   
Each day through 2 to 3 days.   This product is generated during the summer season from June 1st through September 30th.
 
 Fire Weather Field   Forecast Period
Minimum Relative Humidity
NonLoop    Loop
Each day for 7 days for the period from 4 AM until 10 PM PST .
Maximum Relative Humidity
NonLoop    Loop
Each night for 7 nights for the period from 4 PM until 10 AM PST.   The day on the graphic is the morning on which the forecast period ends.
Transport Wind direction and speed (3-hourly)
Non-Loop    Loop
Tranport Wind Direction and Speed (knots) every 3 hours through 2 days.   Tranport Wind is the average wind in the layer from the surface to the top of the mixed layer.   Please note that the Transport Wind output is usually directly from the Non-Hydrostatic Mesoscale Model (NMM) with little or no forecaster modification.
Free Wind direction and speed (3-hourly)
Non-Loop    Loop
Free Wind Direction and Speed (knots) every 3 hours through 2 days.   Free Wind is the wind 3000 feet above ground level (AGL).    Please note that the Free Wind output is usually directly from the Non-Hydrostatic Mesoscale Model (NMM) with little or no forecaster modification.
 
  Coastal Forecast Field
  Forecast Period
West or Northwest Swell Height (feet) and Direction
Non-Loop    Loop
West or northwest swell height (feet) and direction every 6 hours through 3 days.
West or Northwest Swell Period (seconds) and Direction
Non-Loop    Loop
North or northwest swell period (seconds) and direction every 6 hours through 3 days.
South or Southwest Swell Height (feet) and Direction
Non-Loop    Loop
South or southwest swell height (feet) and direction every 6 hours through 3 days.
South or Southwest Swell Period (seconds) and Direction
Non-Loop    Loop
South or southwest swell period (seconds) and direction every 6 hours through 3 days.
Total Significant Wave Height (feet)
Non-Loop    Loop
Total significant wave height (feet) every 6 hours through 3 days.
Wind direction and speed (knots)
Non-Loop    Loop
Surface wind direction and speed (knots) every 3 hours through 3 days.
 

The National Weather Service is introducing a new means of producing and presenting forecasts, called the Interactive Forecast Preparation System (IFPS).   This software allows the generation of very detailed forecasts with distribution of the forecasts possible in a variety of formats - text, graphical, and gridded.   Forecasts generated using IFPS will become part of the National Digital Forecast Database (NDFD).

We are interested in comments and feedback on these prototype graphical products and the options for displaying them.   Please send comments to Webmaster.



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San Diego, California 92127

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