CNN
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Dangerous heat sets its sights on millions of Americans across the South and Plains Monday, including several communities recovering from destructive floods during the weekend. Here’s the last one.
• The heat is heading south: THE Unrelenting heat moves to the Southern and Southern Plains Monday and Tuesday, bringing temperatures into the mid to upper 90s. Some cities could even see temperatures of 100 degrees, including Dallas and Little Rock, Arkansas. The heat index – a measure of how the body feels in high humidity and temperatures – could exceed 110 degrees in some areas.
• Flood-hit communities begin to recover in stifling heat: Monday’s heat alerts spread 1,000 miles from northern Florida to South Dakota, which was among several states inundated by heavy rain and devastating flooding over the weekend. Heat advisories are in effect for several areas that were inundated by floodwaters over the weekend, including parts of northern Iowa, southern South Dakota, eastern Nebraska, from northern Missouri and Kansas. In Iowa, Gov. Kim Reynolds asked President Joe Biden for a major disaster declaration after “catastrophic flooding” forced some communities to evacuate.
•Record weekend heat: Daily high temperature records were broken from New York to Mississippi over the weekend, some dating back more than a century, as a brutal heat wave embraced the Mid-Atlantic and Corridor I -95 from Washington, DC to New York. Philadelphia reached 98 degrees on Sunday, breaking its 1888 record of 97 degrees. Greenville, Mississippi, and Raleigh, North Carolina, recorded a record 100 degrees. Area residents can breathe a sigh of relief Monday as cooler temperatures begin to set in.
• Floods become deadly in South Dakota: At least one person has died during severe flooding in South Dakota, Gov. Kristi Noem said. “I want to remind everyone to remember the power of water and its flow, and to stay away from flooded areas,” the governor warned. At least nine people were rescued from rising waters in Sioux Falls, where emergency responders reported stranded drivers and dozens of stuck vehicles. And the threat of flooding is still not over: Several rivers in the state are swollen with floodwaters and will continue to rise over the coming days, Noem said.
• More than 20 rivers in major flood: Flood warnings remain in waterlogged areas of South Dakota, Iowa and southern Minnesota, as well as along rivers with flow rates well above normal. At least 23 river gauges have reached major flood stage in the region, meaning significant flooding of buildings, major roads and other critical infrastructure is possible, according to the National Weather Service. This number is expected to increase as water continues to accumulate in creeks and streams, eventually flowing into major rivers.
• “Monsoon-like” conditions are arriving in the South-West: An influx of tropical moisture – some of which is from Tropical Storm Alberto – is bringing “monsoon-like conditions” to the southwest, the Weather Prediction Center said. As a result, thunderstorms are possible until mid-week. While the precipitation may be welcomed by firefighters battling several active wildfires in the area, too much rain could trigger flooding and debris flows, making it difficult for crews to access burned areas.
A heat dome building over the southwest and south-central United States early this week will push temperatures 10 to 15 degrees above normal each afternoon in an area extending from west to southeast.
High temperatures in the upper 90s and lower 100s are expected Monday from southern South Dakota to the Southeast. A handful of daily record temperatures could fall in parts of Nebraska and Kansas, and a few are threatened in Mississippi.
The southern part of the country will remain the epicenter of scorching conditions on Tuesday with high temperatures and low temperatures likely in the southern plains and southeast. Atlanta is expected to peak in the upper 90s Tuesday and Wednesday, about 10 degrees above normal for late June.
By Wednesday, heat will return briefly to some of the same areas of the Mid-Atlantic and Northeast that baked last week, but it won’t touch the extreme nature of last week’s oven-like conditions. Temperatures in the upper 90s and low 100s will return to the mid-Atlantic and the 90s will return as far north as southern New England.
A few daily high temperature records are in jeopardy on Wednesday – notably in Washington DC and Baltimore – but much of the northeastern United States will avoid unseasonably warm weather.
Stormy weather maintains flood threat
There will be a chance of rain in heavily flooded areas of the Midwest through most of this week. A Level 2 out of 5 risk of severe thunderstorms is in effect for the region Monday and Tuesday and some of these storms could cause heavy rain.
Exactly how much rain and where it falls depends on how thunderstorms develop each afternoon, but the strongest storms could dump more than an inch of rain in a short time. That’s more than enough to cause additional flooding problems in areas that can’t handle much more rain.
Storms are expected to break out each day in the late afternoon or early evening and remain a threat overnight. Damaging wind gusts and hail also pose threats in the event of a severe thunderstorm early this week.
After a brief break on Wednesday, additional heavy rain is possible in the same areas on Thursday and Friday.
CNN’s Jamiel Lynch contributed to this report.
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