GFS precipitable water at hour 150 shows a system bombing out as it tracks west of japan. This track telleconnects to an apps runner storm track or an GLC track 6-10 days later which lines up with another potential storm between the 10th and 12th of december.
The EPO is forecast to move towards neutral in that time period which coupled with a -ao and -nao may translate to a sizeable storm. The GFS has really been showing this over the last 8 runs.
18z GFS:
Another storm may come into play before hand which will be between the 7th and 9th which has support from the euro but not much on the GFS. A current east asian storm supports this as well. This storm is probably further east and weaker then the first one.
Precipitable Water:
The EPO is forecast to move towards neutral in that time period which coupled with a -ao and -nao may translate to a sizeable storm. The GFS has really been showing this over the last 8 runs.
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18z GFS:
Another storm may come into play before hand which will be between the 7th and 9th which has support from the euro but not much on the GFS. A current east asian storm supports this as well. This storm is probably further east and weaker then the first one.
Precipitable Water:
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