Sunday, April 26, 2009

Severe Weather Recap: April 26

Although thunderstorms are continuing to move across central and eastern Iowa, it appears as if our severe weather threat has become minimal. A few of the thunderstorms entering southern Iowa may have the potential to produce some gusty winds as they continue northeast; otherwise the main threat will be the heavy rains causing flash flooding of low-lying areas.

Both a severe thunderstorm watch and tornado watch were issued for areas of the state today, both of which have now been canceled. Several clusters and line segments of thunderstorm moved across the state, with a majority of reports across central Iowa coming in the form of damaging winds. There was isolated development of a supercell in northeast Iowa ahead of the more linear natured thunderstorms in central Iowa. This supercell did produce several reports of large hail varying from quarter sized to golf ball in diameter. This supercell also produced the first tornado(s) of the year for the state of Iowa, with four reports total coming out of northern Linn county and extreme southern Delaware county. This storm also produced another brief tornado just across the border in Wisconsin. At this time there has not been any significant damage reports with these tornado reports...

Heavy rains are causing flash flooding and flooding of low-lying areas across central and eastern Iowa. This threat will continue through tonight and into tomorrow as the rains continue. Expect the clouds to slowly move out of the area, leaving us will dull skies on Monday; but the sun will return for Tuesday.

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