Multiple rounds of severe storms to hit Iowa today. Flash flooding, tornadoes possible (2024)

Multiple rounds of storms will spread across Iowa on Tuesday, bringing repeated chances for severe weather to the Hawkeye State.

One round of thunderstorms already passed through central Iowa in the early morning hours, with rain continuing to fall.

Here are the latest updates (Jump to Severe weather outlook | Radar | Safety tips):

9:28 a.m.: Severe thunderstorm warning extended in Polk County, to the east

The severe thunderstorm warning for parts of the Des Moines metro has been extended until 10:30 a.m. Tuesday.

Dallas County has been dropped from the warning, but it now extends into Jasper County and as far east as Grinnell and as far south as Pella.

Threats include 60 mph winds and quarter-sized hail. The extended warning covers over 349,600 people.

9:20 a.m.: Storm dropped large hail in Waukee

A severe thunderstorm moving through the Des Moines metro produced large hail in the western suburbs.

Waukee experienced hail ranging from the size of a nickel to as big as a quarter, at 9:07 a.m. according to a trained weather sportter. Wind gusts up to 55 mph were also reported.

8:42 a.m.: Sirens sound in Des Moines as severe thunderstorm warning issued

Much of Dallas and Polk counties are under a severe thunderstorm warning until 9:45 a.m. Tuesday.

Storm sirens began sounding just after 8:40 a.m. in the metro. Cities around Des Moines are at risk of winds up to 70 mph and quarter-sized hail.

The warning covers just north of Ankeny and as far south as Truro. It stretches to Redfield and Winterset in the west and Milo in the east.

Dallas and Polk counties both activate sirens for tornadoes or severe thunderstorms with winds over 70 mph. The warning meets that criteria, unlike a storm on Sunday night that activated the sirens in error.

Sirens do not sound continuously during a warning. They will sound for 3-5 minutes and then pause for 10-15 before repeating. There is not an all-clear sound when a warning expires.

What does the Des Moines, Iowa doppler radar show?

Here's a look at the current National Weather Service radar loop for central Iowa:

Multiple rounds of severe storms to hit Iowa today. Flash flooding, tornadoes possible (1)

8:10 a.m.: Severe thunderstorm warning issued on edge of Des Moines' western suburbs

Areas around the Des Moines metro are under a severe thunderstorm warning until 9 a.m. Tuesday.

The warning extends from Dallas Center, down to Winterset and as far west as Adel. Possible threats include winds up to 70 mph and quarter-sized hail.

Just over 34,000 people live within the warning area.

7:25 a.m. Storms in western Iowa producing 'gorilla' hail

Multiple severe thunderstorm warnings have been issued in eastern Nebraska and western Iowa on Tuesday morning.

A warning issued for Pottawattamie County, home to Council Bluffs, until 7:30 a.m. warned of baseball size hail.

Hail that large is sometimes called "gorilla" hail for its large size and destructive power.

What is Tuesday's severe weather outlook in Des Moines?

The National Weather Service upgraded the risk of severe weather for most of Iowa. A majority of the state it rated "moderate" risk, a level 4 on a scale of 1-5.

More:How much rain did Des Moines get so far? Here are the rainfall totals for Iowa through Monday morning

Multiple rounds of storms are expected to continue through the morning. But, the strongest storms are expected to arrive in central Iowa between 3 p.m. and 8 p.m. Tuesday.

Damaging winds, hail and flash flooding are the primary threats, according to the NWS. Tornadoes — some strong — are also possible.

More:How do tornadoes form? Explaining the severe weather after dozens of recent Iowa tornadoes

Severe thunderstorm watch in effect for Iowa until 1 p.m.

A large portion of central Iowa extending from the southern border to U.S. Highway 20 is under a severe thunderstorm watch until 1 p.m. Tuesday.

The main threats are ping-pong ball-sized hail and wind gusts that could reach 75 mph. Tornadoes are also possible.

What's the difference between a severe weather watch and a severe weather warning?

A watch is issued when conditions are favorable for severe weather to develop. They often cover large areas.

Warnings are issued when severe weather is actually happening and Iowans need to take action.

Read more:What's the difference between a severe weather watch and a warning?

What should you do during a severe thunderstorm warning or tornado warning?

During a severe weather warning, it's time to take action and follow your plan.

NWS has tips for what to do at different locations:

  • Stay Weather Ready:Continue to follow local news or listen to aNOAA Weather Radioto stay updated about watches and warnings.
  • At Your House:Go to your secure location, like the basem*nt or lowest floor level, if you hear a warning. Take your pets with you if time allows.
  • At Your Workplace or School:Stay away from windows. Do not go to large open rooms such as cafeterias, gymnasiums or auditoriums.
  • Outside:Go inside a sturdy building immediately. Sheds and storage facilities are not safe. Taking shelter under a tree can be deadly.
  • In a Vehicle:Being in a vehicle during severe weather is safer than being outside, but, drive to the closest secure shelter if there is sufficient time. Do not stop and park under a bridge or underpass.

Victoria Reyna-Rodriguez is a general assignment reporter for the Register. Reach her atvreynarodriguez@registermedia.comor follow her on Twitter@VictoriaReynaR.

Multiple rounds of severe storms to hit Iowa today. Flash flooding, tornadoes possible (2024)
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