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Very Warm/Turning Cooler/Not Much Rain on October 19-20, 2016
 
The pattern featured high pressure ("H") and warm/dry conditions on 10/18/2016. A couple of days later, the high exited to the east and the flow aloft (arrows) buckled over the central United States. Northwest winds drove a cold front into Arkansas from the Plains.
700 am CDT (10/18)  |  700 am CDT (10/19)  |  700 am CDT (10/20)
In the pictures: The pattern featured high pressure ("H") and warm/dry conditions on 10/18/2016. A couple of days later, the high exited to the east and the flow aloft (arrows) buckled over the central United States. Northwest winds drove a cold front into Arkansas from the Plains.
 

October mirrored September through the first half of the month. It was very warm at times, and there was not much rain. Through the 18th, parts of Arkansas received less than twenty five percent of average precipitation (more than two inches below average). This included Fort Smith (Sebastian County), Pine Bluff (Jefferson County), and Texarkana (Miller County).

 

Precipitation in October, 2016 (Through the 18th)
Site Amount Normal +/- % of Normal
Fayetteville (NW AR) 2.46 2.54 -0.08 97%
Harrison (NC AR) 3.10 1.98 +1.12 157%
Jonesboro (NE AR) 1.25 2.41 -1.16 52%
Fort Smith (WC AR) 0.35 2.44 -2.09 14%
Little Rock (C AR) 1.61 2.70 -1.09 60%
West Memphis (EC AR) 1.14 2.37 -1.23 48%
Texarkana (SW AR) 0.04 2.75 -2.71 1%
El Dorado (SC AR) 2.09 2.93 -0.84 71%
Pine Bluff (SE AR) 0.54 2.79 -2.25 19%

 

High temperatures on October 19-20, 2016.
High Temperatures (10/19)  |  High Temperatures (10/20)
In the pictures: High temperatures on October 19-20, 2016.
 

Temperatures on the 19th were in the 80s to lower 90s, which was well above average readings in the upper 60s to upper 70s. The mercury hit 91 degrees at Fort Smith (Sebastian County) and Blytheville (Mississippi County), and 90 degrees at Jonesboro (Craighead County).

During the nighttime hours of the 19th and early on the 20th, a cold front arrived from the Plains. The front promised cooler weather and chances of precipitation.

 

Twenty four hour rainfall through 700 pm CDT on 10/20/2016.
In the picture: Twenty four hour rainfall through 700 pm CDT on 10/20/2016.
 

Appreciable rain (more than a half inch) was confined to northern and western sections of the state. In the twenty four hour period through 700 pm CDT on the 20th, 1.88 inches of liquid dumped at Highfill (Benton County), with 0.70 inch at Mountain Home (Baxter County). Elsewhere, many locations got a quarter of an inch or less.

Behind the front, breezy north to northwest winds were noted. High temperatures on the 20th were only in the mid 60s to upper 70s.