Amirix Systems and the Weather Channel launch the WeatherStar 4000, a project in the making since 1988.
In these early days the 4000 was a replica of the WeatherStar 3000, only with a cleaner font and a Current Radar image at the end of each Local Forecast.
The colorful gradient backgrounds are added matching The Weather Channel's national weather segments at the time.
The Weather Channel logo appears for the first time on a Local Forecast.
The Regional Forecast map debuts with motionless weather icons.
February 14, 1991
The L Flavor Local Forecast is born.
The graphical version of the Extended Forecast is created, replacing the former NWS text based version.
The Almanac is redesigned to show the phases of the moon.
The E and K flavor's screen line-ups are re-timed now that the Extended Forecast is 1 graphical page, instead of 2 text based pages. Because of this, the narration is discontinued on these two flavors.
The Regional weather icons become animated.
April 17, 1991
Weather icons make their way to the Current Conditions page, however huge they may be.
The Current Conditions page layout is finalized.
Dan Chandler re-records the narration for the WeatherStar 4000; the E and K Flavor's narration is once again restored.
The Regional Conditions map is created, replacing the previous text based Regional Conditions.
The Regional Forecast map is cleaned up so that no city's information runs off screen.
The Current Conditions/Extended Forecast set of weather icons are in place on the regional pages.
The fade effect transiting to and from the Regional Forecast product is removed.
A second, more opaque dark blue to orange gradient background begins to appear layered over the top of the already existing dark blue to orange gradient background to smooth out the color transitions.
The Regional weather icon set returns to the Regional maps, fully revamped.
Dan Chandler does one final set of narration for the WeatherStar 4000. The 36 Hour Forecast is now narrated to have come from The National Weather Service.
Mid November 1992
All Flavor's screen line-ups are revamped.
The Local Radar is added that shows the precipitation and its movement over the course of the last 90 minutes.
The Travel Cities Forecast becomes weather icon based with a blue to grayish blue gradient background.
The NOAA Emblem is added to the 36 Hour Forecast product.
Titles for Reporting Stations nationwide are simplified: I.E.: Conditions at Grtr Cincinnati Ap. became Conditions at Cincinnati.
The K Flavor's Regional Forecast is replaced with the Regional Conditions map. The narration on said flavor is also updated.
The date and time are nudged further downward and to the right to make better room for the Local Forecast screen product titles.
The Regional Icons are updated so that the multi-layered icons are smaller in size: the upper layer cloud moved almost directly on top of its underlying weather graphic.
August 4, 1994
Travel Cities Forecast background gradient is removed.
The Radar becomes 8 color from its previous 6 color graphics.
April 1, 1995
Flavor line-ups begin their most drastic change when the Local Update is introduced.
Dan Chandler's narration becomes phased out.
Travel Cities Forecast is discontinued as a Local Forecast product and would now only appear in error.
Mid to late 1996
Some of the icons on the Regional Icon set are changed, I.E.: Snow. Others are added, I.E.: Sunny and Windy.
The first signs of WeatherStar 4000 degradation are reported.
Signs of degradation are highly reported.
The NOAA emblem is removed from the 36 Hour Forecast product.
The NWS Local Update is discontinued, stabilizing the randomness of each Flavor's screen line-ups.
The Weather Channel logo is modernized.
The 36 Hour Forecasts begin appearing in lower case letters and originate directly from The Weather Channel.