Copyright 2015 Mississippi Weather Media, LLC Mississippi Weather Media uses many different data sources for radar and information. This ensures that if one data source goes down then the website still functions. Most TV and online weather sources are only supplied with 1 data source.MSWXMEDIA has 7 data sources that poll data 24 hours a day. MSWXMEDIA does not use NOAA or National Weather Service for Temp data because this data is only updated 1 time per hour. MSWXMEDIA has a update rate of between 1 and 10 minutes. Sources that use NOAA temp data are TV weather broadcast, online Apps, ect. Most of the time these weather sources will be wrong on temps. Always use MSWXMEDIA for the most accurate temp data. Different slides poll data from different places, so a temp will update in one slide before another place on the website. So you can have 2 different temps for one city. This is normal and will correct itself within 10 mins. Mississippi Weather Media