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| Storm Reports |
| Are you interested in what happened during a recent event? Check out the report below. |
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The Pattern on January 9-13, 2013 (Pg2) |
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At Russellville (Pope County), 5.20 inches was measured in a twenty four hour period ending at 600 am CST on the 13th. Most of this (4.33 inches) fell from 200 pm CST to 800 pm CST on the 12th. Waco and Arkansas Avenues were flooded in town, with water entering homes and apartments.
High water prompted the evacuation of five people from a home on the east side of Danville (Yell County). Flooded roads were barricaded in Batesville (Independence County). Bridges were washed out near Ink (Polk County). Water rescues were necessary at Atkins and Dover (both in Pope County) to help people in stranded vehicles. Numerous roads in Van Buren County were covered by water, and many were impassible for a time.
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Runoff from all this rain in the north/west flowed into area tributaries. Minor flooding was occurring or was expected along portions of the Black, Cache, Fourche La Fave, Petit Jean, Saline, Spring, and lower White Rivers.
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| In the picture: Rapid rises on small streams and creeks were noted from west central into north central Arkansas during the evening of 01/12/2013. At Shirley (Van Buren County), the Middle Fork of the Little Red River went up about 16 feet in eight hours. |
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Eventually, the front gained some momentum toward the southeast during the overnight hours of the 12th/early on the 13th. Areas of the southeast that got heavy rain on the 9th/10th were hit again. Monticello (Drew County) received another 2.67 inches of water through 600 am CST on the 13th, and 1.08 inches the following six hours. This fell on already saturated soil, and could not soak in.
North of town, there was a report of a collapsed road off of Highway 83. Flooded thoroughfares were common across the county. A disaster was declared in Lincoln County where washouts existed along 98 percent of the roads.
While the big story during this event was high water, there was some potential for severe weather. There was a lot of wind energy, and individual storms moved quickly. This usually raises the concern for straight-line wind damage.
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Winds also turned with height, and rotation was indicated by radar in a few storms. While several Tornado and Severe Thunderstorm Warnings were issued by the National Weather Service, there were no reports of damage.
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| In the picture: According to this forecast model, helicity (representing the potential for rotating winds) was very high (over 350 m2/s2) and CAPE (Convective Available Potential Energy...or a measure of instability) was ample enough (500 to 1000 J/kg) for severe weather during the afternoon and evening of 01/12/2013. |
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In the colder air behind the front, there was a period of light freezing rain, sleet or flurries in parts of the Ozarks (in the northwest) late on the 12th/early on the 13th. Harrison (Boone County) had a light wintry mix between 800 pm CST and 1000 pm CST on the 12th.
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Precipitation amounts were minor because moisture became shallow by the time subfreezing temperatures arrived.
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| In the picture: A cross section of the atmosphere from Monticello, AR to Springfield, MO was moist toward the south/east, with less moisture to the north/west early on 01/13/2013. There was a plume of above freezing air aloft, which caused any snow to melt as it fell. This resulted in rain for most areas. Given subfreezing air near the ground in the Ozarks, there was a brief light wintry mix...but amounts were small due to limited (shallow) moisture. |
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The front stalled across the southeast United States as it encountered a large ridge of high pressure off the Florida coast.
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| There were numerous reports of heavy rain and flash flooding on January 12-13, 2013...and one report of hail. For a look at some reports, click here.
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| In the picture: Preliminary reports of flash flooding and hail in the Little Rock County Warning Area on January 12-13, 2013 (in red). |
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