Skip Navigation Links weather.gov 
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
The Weather Prediction Center


 
 

 

Follow the Weather Prediction Center on Facebook Follow the Weather Prediction Center on Twitter
NCEP Quarterly Newsletter
WPC Home
Analyses and Forecasts
   National High & Low
   WPC Discussions
   Surface Analysis
   Days ½-2½ CONUS
   Days 3-7 CONUS
   Days 4-8 Alaska
   QPF
   PQPF
   Flood Outlook
   Winter Weather
   Storm Summaries
   Heat Index
   Air Quality
   Tropical Products
   Daily Weather Map
   GIS Products
Current Watches/
Warnings

Satellite and Radar Imagery
   Satellite Images
   National Radar
Product Archive
WPC Verification
   QPF
   Medium Range
   Model Diagnostics
   Event Reviews
International Desks
Development and Training
   Development
WPC Overview
   About the WPC
   Staff
   WPC History
   Accomplishments
   Other Sites
   FAQs
Meteorological Calculators
Contact Us
   About Our Site
 
USA.gov is the U.S. Government's official web portal to all federal, state, and local government web resources and services.


About WPC's Winter Weather KML Products


On September 15 2010, WPC began creating its Day 1-3 Winter Weather probability forecasts in KeyHole Markup Language (KML)format.  Contained within the files are shaded contours depicting probabilities of snow and freezing rain exceeding pre-determined thresholds. The products are similar to those on WPC's primary winter weather page, with the only difference being that the probability areas are color-filled rather than simply line segments. See an example of a probability forecast in gif image format.   and see that same forecast in Google Earth.

All of the products can be accessed from our KML products page.   There are several viewing options, including:
  1. Individually -- Each of the links to the individual products contain the 24-hour period for which the product is valid.  In addition, the latest product issuance time is included for each forecast day.
  2. Packages containing products for a given forecast day -- These KML files contain four products for the given forecast day: the probability of snow greater than 4, 8, and 12 inches, as well as the probability of freezing rain accumulating more than .25 inch.
  3. Packages containing a particular probability product for each day -- These KML files contain three products: the Day 1-3 probability forecasts of snow greater than 4, 8, or 12 inches, or the Day 1-3 probability forecasts of freezing rain accumulating more than .25 inch.  A slider bar will appear near the top of the display to allow you to scroll or loop through the forecast periods.
  4. Complete product suite -- This link (directly under the "Latest Winter Weather Forecasts" header) contains all 12 products.  Initially, it defaults to displaying the Day 1-3 probabilities of snow greater than 4 inches with a slider bar near the top of the display to allow you to scroll or loop through the forecast periods.
View additional information about WPC's Winter Weather products.
 

NOAA/ National Weather Service
National Centers for Environmental Prediction
Weather Prediction Center
5830 University Research Court
College Park, Maryland 20740
Weather Prediction Center Web Team
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities
Page last modified: Tuesday, 05-Mar-2013 13:08:43 UTC