GARRETT’S BLOG: Weeklong Low Exiting

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The strong low pressure system that has been stationary prompting numerous river and flash flood warnings and claiming at least 1 life in Arkansas is finally moving out of the area.

The low pressure system caused caused widespread flooding and road closures and a tornado in Crawford County. Interestingly enough, the heaviest band of rain fell over the Grand Neosho River Basin which diverted much of the water into Grand Lake, Fort Gibson, & Tenkiller which prevented a high impact flood event that was initially forecast. In addition, the rainfall moved in distinct waves which allowed for some drainage before the next wave of heavy rain arrived.

Some notable March rainfall totals are: Van Buren: 6.30″, Fort Smith: 7.90″, Panama: 7.70″, Wister: 6.40″, Talihina: 8.00″, Grove: 7.60″, Ratcliff: 7.40″, Bella Vista: 5.00″, Sallisaw: 5.40″, XNA 4.40″, West Fork 5.70″, Westville: 5.30″, Pea Ridge: 4.85″.

The average March rainfall for Northwest Arkansas is 4.02″ and Fort Smith is 3.85″. Fort Smith has received 7.87″ so far with Fayetteville at 4.50″. Many locations are more than double the monthly averages.

The low became cut-off when a large trough on the western United States moved in with strong upper level wind speeds. The low moved off the jet stream which caused several days of rainfall. As the low slowly wobbled east it is once again being influenced by the main core of jet stream winds and it’s lifting out of the area with sunshine expected for the upcoming weekend.

-Garrett

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