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Current Conditions

1. Product Description

The Current Conditions Page is the first page that displays during the Local Forecast. It shows in every Local Forecast. It is driven by the primary and alternate sites of the STAR 4000. It displays the current weather conditions for that location. It is not forecast data, nor is it related to where the forecast comes from.

2. Data Information and Expiration Rules

Data for these pages is sent at least hourly (we call it HO for Hourly Observation data), usually within 10 minutes either before or after the top of the hour. The primary site will display until for whatever reason, the data expires. Then, the alternate site will display until its data expires. If both the primary and alternate data has expired, the page will display the “No Report Available” label. The expiration time for HO data is 2 ½ hours. HO data is considered tabular data. Most weather sites report 24 hours, however there are some out there that report fewer than 24 hours. We have a rule when assigning primary and alternate sites that the alternate site has to report 24 hours so a STAR 4000 will not go without data. There are two types of observation sites, manned and automated. Manned observation reports are compiled and sent by a person. Automated observation reports are compiled and sent by a computer and they almost always report 24 hours. There are two types of automated observations, ASOS (Automated Surface Observation System) and AWOS (Automated Weather Observation System). ASOS observations are complete observations, meaning they report every weather parameter shown on the Current Conditions page seen above. AWOS observations do not report weather (rain, snow, sunny, etc), therefore no weather icon and text modifier (the icon with a sun with clouds and the “Partly Cloudy” text modifier seen above) will display.

3. Problem Information

If the “No Report Available” label is showing it is time to get suspicious about the HO data. It is possible to have data expired for the two stations and not have a widespread HO data problem. Check the Local Observations table in the next section.

 

Source: WeatherStar 4000 Product Guide

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Uploaded on July 20, 2008