Oskaloosa.com

CNHI/Southeast Iowa

April 17, 2013

UPDATED: Stormy day brings weather risks

OTTUMWA — Forecasters say large hail is the biggest threat for southeast Iowa today because of how the storms are forming.

While it may not seem like it, there's a relatively stable mass of air at the surface, according to Jim Lee of the National Weather Service's Des Moines office. Lee said that means storms are forming above that stable air, rather than drawing their strength from ground level.

It's hard for tornadoes and strong winds to penetrate to the ground in that setup. Wind from those phenomena have to push the stable air out of the way; all hail has to do is drop.

“Usually, what we see is hail forming in the thunderstorm above that stable air,” Lee said.

It's important to remember, though, that a lower risk of wind and tornadoes is not the same as no risk. People will need to pay attention to the situation.

There's another threat Wednesday: Flooding. It's a different issue than the hail.

“Heavy rains we don't technically consider a severe weather threat,” Lee said.

Still, flash flooding can be exceptionally dangerous, especially if people decide to drive through flooded areas. A flash flood watch is in effect and there have already been some flood warnings issued for rivers and streams in the area.

The timing for the heaviest rain could compound the issues. Two to three inches of rain are forecast overnight, when darkness makes flooded roadways harder to spot.

 

Original story:

Most of the eastern half of the United States faces at least a chance of severe weather today, with southeast Iowa in the slight risk category.

The Storm Prediction Center says strong winds and hail are the greatest threats from today's storms. While the system does bring a threat of tornadoes, that threat is focused on central Oklahoma and parts of Kansas and Missouri.

Text Only
CNHI/Southeast Iowa
  • Affirmative action ruling challenges colleges seeking diversity

    The U.S. Supreme Court's support of Michigan's ban on race-based affirmative action in university admissions may spur colleges to find new ways to achieve diversity without using racial preferences.

    April 23, 2014

  • A 'wearable robot' helps her walk again

    Science is about facts, numbers, laws and formulas. To be really good at it, you need to spend a lot of time in school. But science is also about something more: dreaming big and helping people.

    April 23, 2014

  • Cuba is running out of condoms

    The newest item on Cuba's list of dwindling commodities is condoms, which are now reportedly in short supply. In response, the Cuban government has approved the sale of expired condoms.

    April 23, 2014

  • Tulip Time schedule

    Tulip Time is just around the corner. Here's the complete schedule for events.

    April 23, 2014

  • The waffle taco's biggest enemy isn't McDonald's. It's consumer habits.

    Gesturing to Taco Bell, Thompson said McDonald's had "not seen an impact relative to the most recent competitor that entered the [breakfast] space," and that new competition would only make McDonald's pursue breakfast more aggressively.

    April 23, 2014

  • Life and Times cover.tiff Life and Times

    Click here to go to the new Life and Times e-magazine.

    May 30, 2012 1 Photo

  • Screen Shot 2014-04-22 at 4.42.47 PM.png VIDEO: Leopard attacks crowd in India

    A leopard caused panic in the city of Chandrapur when it sprung from the roof of a house and charged at rescue workers.

    April 22, 2014 1 Photo

  • The top 12 government programs ever

    Which federal programs and policies succeed in being cost-effective and targeting those who need them most? These two tests are obvious: After all, why would we spend taxpayers' money on a program that isn't worth what it costs or helps those who do not need help?

    April 22, 2014

  • In cuffs... 'Warlock' in West Virginia accused of sexual assault

    Police in West Virginia say a man claiming to be a “warlock” used promises of magical spells to lure children into committing sexual acts with him.

    April 22, 2014 1 Photo

  • Cats outsmart the researchers

    I knew a lot had been written about dogs, and I assumed there must be at least a handful of studies on cats. But after weeks of scouring the scientific world for someone - anyone - who studied how cats think, all I was left with was this statement, laughed over the phone to me by one of the world's top animal cognition experts, a Hungarian scientist named Ádám Miklósi.

    April 22, 2014

Obituaries
Oskaloosa Shopper
Facebook
Hyperlocal Search
Premier Guide
Find a business

Walking Fingers
Maps, Menus, Store hours, Coupons, and more...
Premier Guide
Parade
Magazine

Click HERE to read all your Parade favorites including Hollywood Wire, Celebrity interviews and photo galleries, Food recipes and cooking tips, Games and lots more.
Photo reprints