Severe weather possible Tonight

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outlook1230pm Update: The Storm Prediction Center in Norman, OK has updated the slight risk to a moderate risk  for parts of the viewing area for severe thunderstorms later this afternoon and into the evening hours. Strong Damaging Winds and Moderate Size Hail will be the primary threats. The storms that become well organized also obtain the threat for isolated tornadoes. That is only with the discrete, well-organized storms.
Scattered thunderstorms have already developed around central parts of Iowa and Missouri.   Early evening( 4-5pm) and later is when the threat will spread into Illinois. That is when the threat for damaging winds, heavy rainfall and large hail will be our main concern, as a possible line of strong/severe storms push through.
Thunderstorms are expected to push east out of the Rockford area and Northern Illinois after 1am.
The 13 Weather Authority will keep you updated with any watches or warnings throughout the day.

Notice, I put “possible” and not likely. It still remains to be seen whether the atmosphere can get charged enough to promote extreme thunderstorm development but it needs to be watched closely. Our 13FutureTrack Severe Weather Index shows intense thunderstorms over the Kansas City, SW Iowa area tonight. These storms could translate eastward and near the Mississippi River by daybreak Friday in a dying phase.

As a cold front sweeps through Iowa on Friday, intense thunderstorms may develop from Waterloo, Iowa, points south. These storms will race east-northeast and could be bearing down on us late in the afternoon into the evening. From the onset of the storms through 9pm storms will have a potential for large hail and isolated tornadoes. After 9pm the threat for tornadoes will wane, but a threat for damaging straight-line wind goes up. Where the storms are at this point remains a mystery. We’ll just have to see where they form during the afternoon hours of Friday. Once again, storms will likely develop just east of I-35 in Iowa during the mid to late afternoon.

Our storm threat will completely go away once the front passes around midnight Friday night. -ES

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Posted under severe weather

This post was written by qni_it on April 29, 2010

7 Comments so far

  1. Renee April 29, 2010 7:01 PM

    Will we be getting much rain either way? My garden is feeling a bit dry . . .

  2. tony April 30, 2010 9:52 AM

    Something tells me these storms are going to dissipate before they get us and leave us high and dry. I hope not.

  3. Justin April 30, 2010 11:36 AM

    Yay for moderate risk.

  4. tony April 30, 2010 11:52 AM

    Where do you see moderate risk? I still only see slight risk.

  5. Justin April 30, 2010 11:58 AM

    Storm Prediction Center homepage. Just got updated very recently. http://www.spc.noaa.gov/

  6. tony April 30, 2010 12:25 PM

    Oh, I saw it. It almst looks like rockford is right on the very outer edge of the moderate risk.

  7. tony April 30, 2010 12:45 PM

    Wow, it looks like from rockford points south and west are under it.

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