Tuesday, July 26, 2011

Severe Weather Update - Dakotas

Strong to marginally severe thunderstorms have been forming over the last 1-2 hours across portions of mainly Northern and Central North Dakota. This activity is what is referred to as "elevated", meaning that the storms are not based in the immediate surface level of the atmosphere, but rather in a layer of unstable air that is flowing into the region a few thousand feet above the surface level.

Large hail will be possible with some of this activity as it moves and/or develops toward the East/Southeast during the early through mid-afternoon hours.

More intense, organized thunderstorm activity (which will be "surface based") is forecast to take place across southern North Dakota into northern South Dakota by late afternoon or early evening.  As indicated in a post earlier this morning, some of this activity is likely to be severe, with very large hail, damaging winds and a few strong tornadoes possible.

If you live in this region, please don't let your guard down because of the less organized activity that is occurring at the present time.  The main threat of severe weather, some of which could potentially become life threatening, won't take place until late this afternoon and into this evening.  If you live in these areas, please listen to NOAA Weather Radio or another reliable local source for later information and possible warnings.

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