(this 25-image Java animation sequence will take a minute or two to load...)
(- Animation -)
This loop of GOES-8 6.7 micron IR (water vapor) imagery shows the mid-level dry slot that moved northeastward into central Texas. This dry slot was associated with a mid-level jet streak that was advancing over the region. Upward vertical motion induced within the left exit region of the jet was conducive to the formation of the elongated convective bands which enhanced snowfall rates in the region between Midland (KMAF), San Angelo (KSJT) and Abilene (KABI) Texas.
Also evident is the cyclonic motion associated with a mid-level lobe of vorticity that developed between Wink (KINK) and Midland (KMAF), helping to produce bursts of heavy snow (S+) at those two locations.
Hourly surface reports are plotted on the imagery, with precipitation reports in red (R = rain; S = snow; IP = ice pelltes (sleet); L = drizzle).