Saturday, January 12, 2019

Chance For More Sprinkle Showers

Storm over central U.S. is slowly moving toward the east this morning. Views here are of the Gateway Arch in St. Louis from east side of Mississippi River. Yesterday afternoon there was moderate snow, while this morning (below) clouds have lifted, some showing a significant amount of new snow. While it appears to be man sitting in the enclosure, it is apparently a structural feature.

This morning's 500 mb analysis (from SPC above) shows a trough along the California coast this morning. The southern portion is forecast to break off and come east under the very strong blocking high over northern Idaho. This feature is forecast to weaken rapidly as it comes across Arizona tonight. The forecast 500 mb chart below is valid at midnight tonight (from the 06 UTC WRF-GFS forecast at Atmo). At bottom is same model run's forecast of total precipitation through noon tomorrow - certainly nothing like last weekend's event.

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