Monthly Storm Reports and Storm Data
Storm Reports
Are you interested in what happened during a recent event? Check out the report below.
 
The End of a Record Wet Period (August 12-13, 2013)
 
The WSR-88D (Doppler Weather Radar) showed showers and thunderstorms across the central third of Arkansas at 530 pm CDT on 08/12/2013. It was very wet across northern Arkansas to begin August. On the 12th, there was more rain to contend with, but it was in central and southern sections of the state along a slowly dissipating front.
In the picture: The WSR-88D (Doppler Weather Radar) showed showers and thunderstorms across the central third of Arkansas at 530 pm CDT on 08/12/2013.

 

The atmosphere was very moist, and showers and storms were more moisture loaded than usual. A thunderstorm moved over Lake Maumelle (Pulaski County) as viewed from Pinnacle Mountain on 08/12/2013.
In the picture: A thunderstorm moved over Lake Maumelle (Pulaski County) as viewed from Pinnacle Mountain on 08/12/2013. The photo is courtesy of Dale McGraw. Click to enlarge.

 

Some downpours were extreme, such as the 2.94 inches of rain that fell at Petit Jean Mountain (Conway County) in 47 minutes (327 pm CDT to 414 pm CDT). Little Rock (Pulaski County) had 1.43 inches between 500 pm CDT and 600 pm CDT.

 

Forty eight hour rainfall through 1200 am CDT on 08/14/2013.
In the picture: Forty eight hour rainfall through 1200 am CDT on 08/14/2013.
 

Any severe storms were isolated. A few tree limbs were downed by strong to damaging winds at Casa (Perry County). No other severe weather reports were received by the National Weather Service.

During the morning of the 13th, there was one more round of rain across the central/southern counties as a new cold front swept toward the region from Missouri. There was some minor flash flooding south of Waldron (Scott County), with water over a couple of roads.

Parts of the drought stricken south really needed water. At Pine Bluff (Jefferson County), there was more rain between 700 am CDT and 100 pm CDT on the 13th than from June 18th through August 11th. In just six hours, 1.87 inches of rain was measured, with only 1.27 inches the previous 55 days.  

 

Precipitable water values, which were well above normal (greater than two inches at times) through the beginning of August, were replaced by much lower values (less than an inch) and more comfortable air on 08/14/2013. Much drier air followed the new front heading into the 14th, with moisture shunted toward the Gulf Coast.
In the picture: Precipitable water values, which were well above normal (greater than two inches at times) through the beginning of August, were replaced by much lower values (less than an inch) and more comfortable air on 08/14/2013. Precipitable water, or water vapor contained in a vertical column of the atmosphere, is normally between 1.25" and 1.75" in mid-August.

 

Precipitable Water Values at North Little Rock (Pulaski County)
Date Time Value (Inches)
August 12, 2013 700 am CDT 1.86
August 12, 2013 700 pm CDT 2.06
August 13, 2013 700 am CDT 2.17
August 13, 2013 700 pm CDT 1.70
August 14, 2013 700 am CDT 1.70
August 14, 2013 700 pm CDT 0.99

 

 

Thirty day rainfall and percent of normal rain ending at 700 am CDT on 08/14/2013.
In the pictures: Thirty day rainfall and percent of normal rain ending at 700 am CDT on 08/14/2013.

30 Day Rainfall   |   30 Day % Normal Rain
 

It was the end of a period with unprecedented rainfall dating back thirty days. From mid-July through this event, several locations in northern and western Arkansas had 10 to 15 inches of precipitation, with locally higher amounts. This included sites such as Harrison (Boone County), Mountain Home (Baxter County), Calico Rock (Izard County), Gilbert (Searcy County), Mena (Polk County), Waldron (Scott County) and Murfreesboro (Pike County). Rainfall totals at these sites were 1st or 2nd highest all-time during this time frame.

 

30 Day Rainfall (through 700 am CDT on August 14th)
Site Amount (Inches) Rank
Calico Rock (Izard Co.) 15.39 1
St. Paul (Madison Co.) 14.55 1
Waldron (Scott Co.) 14.36 1
Oden (Montgomery Co.) 13.66 2
Mena (Polk Co.) 13.57 2
Omaha (Boone Co.) 13.52 1
Langley (Pike Co.) 13.05 1
Gilbert (Searcy Co.) 12.78 1
Harrison (Boone Co.) 12.71 1
Berryville (Carroll Co.) 12.03 1
Mountain Home (Baxter Co.) 11.96 1
Jasper (Newton Co.) 11.75 1
Pocahontas (Randolph Co.) 11.62 1
Melbourne (Izard Co.) 11.46 2
Lead Hill (Boone Co.) 11.43 1
Searcy (White Co.) 11.32 2
Mammoth Spring (Fulton Co.) 11.22 1
Mountain View (Stone Co.) 11.01 1
Murfreesboro (Pike Co.) 10.78 2
Black Rock (Lawrence Co.) 10.45 1

 

Interestingly, parts of the southeast had less than 2 inches of rain. While drought conditions were disappearing in much of the region, conditions continued worsening in the southeast. 

 

Storm Reports
There were isolated reports of flash flooding and severe weather on August 12th and 13th, 2013. For a look at some reports, click here.
 
Link of Interest
Plot Reports
Preliminary reports of flash flooding and severe weather in the Little Rock County Warning Area on August 12-13, 2013 (in red).
Submit a storm report.
In the picture: Preliminary reports of flash flooding and severe weather in the Little Rock County Warning Area on August 12-13, 2013 (in red).

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