Saturday, September 19, 2009

Impressive rainfall statistics for this week

A low pressure system over the south-central U.S. that lingered throughout the week has brought impressive rainfall totals to the greater Memphis area. Flash Flood Watches have been in effect for several days and Flash Flood Warnings have been posted as heavier rains encompass the area. Yesterday's downpours caused flash flooding in the city and some water rescues, including evacuation of a large daycare center. (See the article by The Commercial Appeal.)

Here is a sampling of totals since last Sunday (9-13-09), aggregated from a number of sources including official data, CoCoRaHS precipitation observers, and personal weather station owners. As you can see there are widespread totals of 4-6" across the board.

Official observations:
GERMANTOWN CO-OP: 4.35" (since 9-15)

CoCoRaHS observers:
Bartlett 3.6 N: 4.91" (this is at the site)
Bartlett 1.0 WNW: 6.02"
Bartlett 0.9 NE: 4.71" (not incl. 9-19)
Memphis 5.5 ENE: 5.45" (not incl. 9-19)
Memphis 3.2 NW: 7.18"
Atoka 1.9 S: 4.73"
Atoka 3.2 ESE: 3.45" (not incl. 9-19)
Hickory Withe 3.0 SSE: 4.69"
Oakland 1.3 NE: 4.30"
Southaven 4.8 SE: 3.46"

Area Personal Weather Stations:
Village of Arlington, TN: 5.03"
Appling Lake, Bartlett: 4.60"
Sutton Place Subdivision, Cordova: 3.38"
Eads, TN: 3.94"
Plantation Lakes, Olive Branch, MS: 5.38"
Brentwood Farms, Southaven, MS: 3/23"

Here is a map showing Doppler radar rainfall estimates for the Mid-South. Quite impressive totals! Red colors are 5"+ totals, while pinks highlight areas that have received 10"+!

Unfortunately, the Forecast calls for more of the same this weekend, though we may get a bit of a break on Monday before another system moves in towards the middle of next week and, possibly, stalls out, bringing more rain chances. And September is typically a dry month in the Mid-South!

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