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Heavy Rain on September 2-5, 2022
 
A ridge of high pressure ("H") was responsible for scorching heat from the western United States into the Plains in early September, 2022. Low pressure ("L") was dominant farther east, with areas of wet weather and milder temperatures.
In the picture: A ridge of high pressure ("H") was responsible for scorching heat from the western United States into the Plains in early September, 2022. Low pressure ("L") was dominant farther east, with areas of wet weather and milder temperatures.
 

The pattern was unsettled during the first week of September. On the 2nd, a front wobbled across Arkansas, and triggered scattered showers and thunderstorms across the northern counties. Two to three inches of rain dumped at a few locations. Twenty four hour amounts through 700 am CDT on the 3rd included 2.56 inches at Mountain Home (Baxter County), 2.25 inches at Jordan (Baxter County), and 2.10 inches at Clarksville (Johnson County).

 

In the video: The WSR-88D (Doppler Weather Radar) showed scattered thunderstorms with heavy rain across portions of central Arkansas during the afternoon of 09/05/2022.
 

On the 4th/5th, a new cold front drifted into Arkansas from the north and stalled. Surrounding the front, more hit and miss thunderstorms popped up on the 5th, and produced torrential rain in places. High temperatures were in the 80s to lower 90s.

 

Twenty four hour rainfall through 700 am CDT on 09/06/2022.
In the picture: Twenty four hour rainfall through 700 am CDT on 09/06/2022.
 

During the afternoon, precipitation was concentrated from west central into central and southeast sections of the state. The heaviest downpours were between Little Rock (Pulaski County) and Benton (Saline County), with two to more than three inch totals reported. At Crystal Valley (Pulaski County), for example, 2.75 inches of liquid was measured.

 

Heat and Flooding

Elsewhere across the country, record heat occurred in the western United States in early September. On the 5th, the temperature reached 104 degrees at Salt Lake City, UT. It had never been so hot during September locally, and it was the 32nd day in 2022 with triple digit heat (a record number of occurrences in a year). The next day, the mercury hit 116 degrees at Sacramento, CA, and 109 degrees at San Jose, CA. It was the hottest day in recorded history at both sites.

On the 3rd/4th, close to a foot of rain came down near Summerville, GA. People in low lying areas were rescued from their homes (in boats), and the water system failed temporarily. On the 5th, flooding was life threatening in Providence, RI following eight to more than ten inches of rain. Roads became lakes, including portions of Interstate 95. This left some motorists stranded for hours.

 

In the picture: A rainbow was witnessed in Bryant (Saline County) toward evening on 09/05/2022.
 

Ditches overflowed at the intersection of Highway 100 and Interstate 430 near Maumelle (Pulaski County). Several inches of water flowed across the roadway. Multiple roads were flooded in southern Saline County, as well as in Pine Bluff (Jefferson County).