STATEWIDE–Torrential rain, strong winds, and isolated tornadoes are all severe weather threats that could reach Indiana Tuesday because of Tropical Depression Cristobal, says the National Weather Service in Indianapolis.

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“Basically anywhere from noon until 10 pm would be our most likely threat. We’re going to be keeping a close eye on things during the afternoon and evening hours Tuesday,” says Joe Nield, a meteorologist with the National Weather Service in Indianapolis.

Nield says every part of Indiana needs to be ready.

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“Pretty much all of central Indiana will be affected. The western half of Indiana will be in the highest threat area, but eastern Indiana is still going to have a threat as well. You’re going to want to have your plan in place to take action in case a warning is issued on Tuesday,” says Nield.

All of western Indiana is under a slight risk for severe weather. Cities and towns east of Indianapolis are under a marginal risk.

A slight risk means scattered powerful thunderstorms are expected. While storms may be short-lived, they can be intense. A marginal risk means isolated thunderstorms are possible.

Cristobal was a Tropical Storm before dropping to a Depression. A tropical depression is a tropical cyclone that has maximum sustained surface winds (one-minute average) of 38 mph or less. Nield says the ever-changing nature of Cristobal has him concerned.

“What has been changing is the degree of expected instability as we get into Tuesday. That has increased our threat. The low-level shear that is already in place is kind of setting the stage for what could be a severe weather outbreak across the area,” says Nield.

Nield says the thunderstorm threat decreases overnight Tuesday into Wednesday morning.

“We’re not expecting a severe weather threat on Wednesday, just some continued breezy conditions and precipitation exiting the area,” says Nield.