Saturday, March 10, 2007
CUT-OFF LOWS
Sometimes a trough of low pressure will get pinched off from the main jet stream flow. This leaves a spinning eddy of air meandering, “cut-off” from the mean upper level winds. Around the low, precipitation, clouds and cooler weather can last for days. Forecasting models have a tough time handling these enigmatic features.
Our weather over the next three to four days will largely be dictated by such a feature which is now over the pan handle of Texas. The latest trend is for this low to move to the southwest and then by midweek pass to our south with a gradual eastward movement. It is important to note that this may change in both timing and position.
At this point, given the trend, it’s safe to that points south of I-40 stand the best chance of seeing rain throughout the short term, though areas further to the south and west stand an even better shot.
Round and round and round the low goes…where it tracks is a tough, tough call!
Our weather over the next three to four days will largely be dictated by such a feature which is now over the pan handle of Texas. The latest trend is for this low to move to the southwest and then by midweek pass to our south with a gradual eastward movement. It is important to note that this may change in both timing and position.
At this point, given the trend, it’s safe to that points south of I-40 stand the best chance of seeing rain throughout the short term, though areas further to the south and west stand an even better shot.
Round and round and round the low goes…where it tracks is a tough, tough call!
Posted by Ted Zarras at 8:43 PM
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