Indiana weather: Tornado hits Johnson County. Here's what we know.

Severe storms that swept through Indiana and several other states Sunday afternoon spawned a tornado that touched down in Johnson County, just south of Indianapolis.

No deaths or injuries have been found, Bargersville Deputy Fire Chief Michael Pruitt said after his fire department completed its search and rescue operation.

'Just lucky': Residents tell of close calls after tornado rips through Johnson County

The department received the first call related to a structural collapse about 4:15 p.m., Pruitt said. From there, he said the tornado moved through the area in about 15 minutes.The four-mile area that saw damage is between I-69 and Indiana 135 and between Smokey Row Road and Stone’s Crossing Road, he said.Damage includes structures of homes, roofs and downed power lines that could keep people’s power off for days, Pruitt said.

Here's what happened on Sunday.

Weather: Social media videos show tornado funnel, damage in Johnson County

Weather clear in Johnson County following tornado

Johnson County is no longer under any severe weather alerts as of 9 p.m.

Forecasts from the National Weather Service project temperatures in the low 60s to the low 70s overnight and partly cloudy skies, with scattered showers and thunderstorms Monday.

A combination of high temperatures, high humidity and strong wind caused the tornado to form. Meteorologists at the National Weather Service do not expect Monday’s conditions to yield another one.

Indiana weather: 6 times tornadoes have caused damage in Johnson County

Curfew will be implemented in area hit

Officials said they will be enforcing a 9 p.m. to 6 a.m. curfew in the area hit by the tornado.

Many without power after tornado hits Johnson County

Duke Energy reported more than 3,700 customers in Johnson Countywithout power just before 8 p.m. The outages started coming in about 4:15 as the wave of strong storms moved through the area. The bulk of the outages are along Indiana 135. Power outages could last more than 48 hours, county officials said. At one point the outages impacted more than 12,000 customers.

Officials said power lines are down within a 3-mile area where the tornado hit.

Shelter set up after Johnson County tornado

The American Red Cross has set up a shelter for displaced residents at Greenwood Middle School, 1584 Averitt Road.

Johnson County tornado damages neighborhoods in Bargersville

Officials named areas around the Kensington neighborhood in Bargersville as most affected by the tornado.

The tornado touched down in the Mullinex Road area near Center Grove and traveled across Indiana 135.

Clary Crossing Apartments, Golden Grove and Pennington Estates experienced the bulk of the damage, officials said. They advised residents to avoid the areas.

Road closures tied to Johnson County tornado

Areas of White River Township affected by the tornado will experience road closures:

• Travis Road is closed between Mullinix Road to Morgantown Road

• Morgantown Road from Mullinix Road to Whiteland Road

• Stones Crossing Road from State Road 135 to Saddle Club Road

• Saddle Club Road from Stones Crossing Road to Smokey Row Road

Several neighborhoods along those roads are closed to the public due to storm damage.

People are asked to stay out of the areas while emergency crews work. Power lines and debris also pose a hazard.

Tornadoes in Indiana since 1950

Tornado reported in Johnson County

Parts of northern Johnson County were hit by a tornado and the damage covers a large area, Johnson County Sheriff Duane E. Burgess said.

Several neighborhoods and homes have been damaged or destroyed.

"We are asking that if you do not live in the area please stay out of the area because you are hindering the work of emergency workers," Burgess said.

Law enforcement has already closed several roads in the area.

Report downed trees, debris in Indianapolis

Tornado warning: Shelbyville, Morristown, Waldron

Tornado warning continues in Shelby County

Severe thunderstorm warning: Anderson, Yorktown, Chesterfield

Weather sirens sounding across Indianapolis as storms hit

Tornado warning includes Greenwood, New Whiteland, Whiteland

Tornado warning includes Bloomington, Ellettsville and Spencer

Severe thunderstorm warning for Greenwood, New Whiteland, Whiteland

Severe thunderstorm warning for Lawrence, Greenfield, McCordsville

Severe thunderstorm warning for Indianapolis, Fishers, Lawrence

Tornado warning includes Cicero, Lapel, Edgewood

Tornado warning includes Bloomington, Ellettsville, Clear Creek

Tornado warning includes Westfield, Tipton, Sheridan

While most thunderstorms will remain weak, meteorologists predict, some could drop heavy rain and hail.

Tornadoes also are possible and Indiana's first tornado watch was issued about 1:30 p.m. for most of the state. Roughly two hours later a tornado warning was issued for areas northwest of Indianapolis, including Westfield.

Hail larger than 2 inches is possible with wind gusts higher than 60 mph. There also is a threat of 2-3 inches of rain an hour in some areas, which could lead to surface flooding.

The storms will arrive after a day of rising temperatures and clear skies and could happen rapidly. The storms will mostly happen between 2-8 p.m.

Difference between a weather watch and a warning

• Tornado Watch: Be Prepared. Tornadoes are possible in and near the watch area. Review and discuss your emergency plans and check supplies and your safe room. Be ready to act quickly if a warning is issued or you suspect a tornado is approaching. Acting early helps to save lives. Watches are issued by the Storm Prediction Center for counties where tornadoes may occur. The watch area is typically large, covering numerous counties or even states.

• Tornado Warning: Take Action. A tornado has been sighted or indicated by weather radar. There is imminent danger to life and property. Move to an interior room on the lowest floor of a sturdy building. Avoid windows. If in a mobile home, a vehicle, or outdoors, move to the closest substantial shelter and protect yourself from flying debris. Warnings are issued by your local forecast office. Warnings typically encompass a much smaller area (around the size of a city or small county) that may be impacted by a tornado identified by a forecaster on radar or by a trained spotter/law enforcement who is watching the storm.

• Severe Thunderstorm Watch: Severe thunderstorms are possible in and near the watch area. Stay informed and be ready to act if a severe thunderstorm warning is issued. The watch area is typically large, covering numerous counties or even states.

• Severe Thunderstorm Warning: Take Action. Severe weather has been reported by spotters or indicated by radar. Warnings indicate imminent danger to life and property. Take shelter in a substantial building. Get out of mobile homes that can blow over in high winds. Warnings typically encompass a much smaller area (around the size of a city or small county) that may be impacted by a large hail or damaging wind identified by an NWS forecaster on radar or by a trained spotter/law enforcement who is watching the storm.

This article originally appeared on Indianapolis Star: Indiana storms: Tornado hits Johnson County. Red Cross opening shelter