We've guessed that you're not using a client that supports colored tables and have tried to compensate. Multicell Lines also known as squall lines Multicell line storms consist of a line of storms with a continuous, well developed gust front at the leading edge of the line. An approaching multicell line often appears as a dark bank of clouds covering the western horizon. The former name is for positioning squall lines in the thunderstorm spectrum.
Downburst winds are the main threat, although hail as large as golf balls and gustnadoes can occur.
Flash floods occasionally occur when the squall line decelerates or even becomes stationary, with thunderstorms moving parallel to the line and repeatedly across the same area. Squall lines with a confirmed severe weather history allow for the issuance of reliable warnings. Multicell Clusters Terms for using data resources. Credits and Acknowledgments for WW2010.