Henry Margusity

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Flooding Rains in Texas from Norman... Snow Next Week?

September 28, 2012; 8:50 AM ET


1. The rich tropical moisture from Miriam and now Tropical Storm Norman will spread into Texas today and this weekend. It's likely that a single identity, which would be Norman, will cross the mountains and move across southern Texas and eventually into the western Gulf of Mexico. On that path, heavy rains will spread from western Texas through the Hill Country into San Antonio and eventually Houston. I can see anywhere from 1-8 inches of rain from that system this weekend across Texas.

That feature will be a trackable feature along the Gulf Coast and eventually the Southeast with heavy rains on the Monday and Tuesday time frame. It will probably weaken coming north into the mid-Atlantic Wednesday and Thursday next week.

2. An upper-level low is still predicted over the Great Lakes this weekend, and that means more waterspouts over the eastern Great Lakes.

3. I posted a map of where snowflakes are possible late next week. With the typhoon recurving in the Pacific, that usually leads to a colder weather pattern a week to 10 days down the road. The air mass coming down next week will certainly be cold enough for upslope snow in Montana and Wyoming, with some snowflakes in the back end of the rain across the northern Plains into the northern Great Lakes.

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Henry Margusity
AccuWeather.com severe weather expert, Henry Margusity, offers the Meteorological Madness blog including detailed analysis of severe weather across the US.