Local forecast by
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The KML formatted files on this page contain NDFD
forecast data, LAMP
guidance and RUC13 forecast model
data for each NWS TAF site. In addition, selected navigation points are
included with NDFD and RUC data. The files are created once per hour and
contain data for a 6 or 12 hour period.
The following NDFD fields are included
for airport and navigation points:
T: |
Temperature from the NDFD |
| Td: |
Dew point from the NDFD |
PoP: |
Precipitation index from the NDFD |
PoT: |
Probability of thunder as derived from the Wx
NDFD field |
The following LAMP
fields are included for airports (TAF sites):
T: |
Temperature from LAMP |
| Td: |
Dew point from LAMP |
PoP: |
Probability of precipitation Index from LAMP |
| PoT2hr: |
Probability of thunderstorm in a 2 hour period |
PoTCat: |
Categorical thunderstorm probability as a Y/N
value from LAMP |
In addition, Convective Cloud Top Levels (CCT) , and upper level winds at
selected Flight Levels are available from the RUC-13.
NDFD, LAMP and RUC Fields for each TAF site listed by CWSU and NDFD
Graphs for OEP Airports:
Icons are color coded based on the PoT value in the NDFD Forecast Data.
The inner triangle represents the PoT forecast in the 0 to 3 hour period.
The outer square is colored based on the PoT in the 4 to 12 hour period.
If PoT is increasing the triangle will point down. If PoT is decreasing,
the triangle will point up. Click on the TAF site with the left mouse
button to interrogate data as a table.
Data files are produced for each NWS Central Weather Service Unit (CWSU).
This information is provided as an example of just one way that CWSU forecasters
can utilize NDFD, LAMP and RUC data as guidance in making a forecast for
thunderstorms at a given point. The data set are best utilized with current
National Mosaic Radar data available here.
Other radar data sets can be obtained at the NWS
Ridge Radar Page.
The following software will aid in viewing the data contained within
these kml files:
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NASA World Wind viewer (latest version 1.4 released February 14,
2007) - free download from NASA |
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GoogleEarth viewer - KML file format support - free download from
Google.com |
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ESRI's ArcGIS Explorer - KML file format support - free download
from ESRI.com
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FME (Feature Manipulation Engine) that converts data in one format
to another - KML file format support - (Purchase) - download from
Safe.com |
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ArcGIS extension that allows ESRI software to read KML until the
next full release of ESRI software that will natively support KML/KMZ
- (Purchase) - download from KMLer.com
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www.weather.gov 
