Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >
Overview
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A very slow moving and stacked low pressure system pushed over the Dakotas late Friday, August 4th through Sunday, August 6th as it continued its track southeast. This low had an abundance of moisture as weather models' Precipitable Water (PWAT) values indicated nearly two inches of moisture in the atmosphere, supporting the threat for heavy rain. Surface dew point values were well in the mid to upper 60s to lower 70s during this time frame as well, making it very humid. The result was widespread rainfall that occurred over the forecast area, which was very welcoming and much needed! Rainfall amounts ranged from an inch in Clark, SD to over nine inches near Rockham, SD! There was some minor flooding with reports of secondary roads under water in Hand and Spink Counties. |
 48 hour precipitation accumulation estimates. August 4th-August 6th, 2023 |
Radar
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| Radar imagery from 6:50am -12:50pm Saturday 8/5/23 | Radar imagery from 12:50pm-5:50pm Saturday 8/5/23 |
Rain Reports
...PRECIPITATION REPORTS... The precipitation reports are 2 day or 48 hour totals ending at the time listed and only include values over 1 inch. Location Amount Time/Date Provider 2 SSE Rockham 9.40 in 0942 AM 08/06 Public 3 SSE Burdette 8.26 in 1038 AM 08/06 Public Zell 8.10 in 1031 AM 08/06 Public Cottonwood Lake 7.96 in 1116 AM 08/06 Mesonet 5 ENE Frankfort 7.47 in 1111 AM 08/06 Mesonet Presho 12 NNE 7.40 in 0700 AM 08/06 COCORAHS 5 NE Zell 7.10 in 1124 AM 08/06 Public 5 N Zell 6.80 in 1045 AM 08/06 Public 4 SW Athol 6.75 in 0856 AM 08/06 Public 5 N Rockham 6.69 in 1028 AM 08/06 Mesonet 2 NNE Mansfield 6.31 in 1037 AM 08/06 Trained Spotter 1 N Redfield 6.20 in 0800 AM 08/06 Broadcast Media 5 NNW Glencross 6.00 in 1135 AM 08/06 Public Hayes 7 ESE 5.41 in 0800 AM 08/06 COCORAHS Hecla 7 WNW 5.38 in 0800 AM 08/06 COCORAHS Chelsea 3.8 W 5.37 in 0700 AM 08/06 COCORAHS Vivian 7 NNE 5.32 in 0700 AM 08/06 COCORAHS Vivian 13 N 4.83 in 1059 AM 08/06 RAWS Ashton 1 NE 4.83 in 1145 AM 08/06 COOP Cravens Corner 6 SE 4.72 in 0800 AM 08/06 COCORAHS Stratford 4.70 in 1009 AM 08/06 Public Warner 4.50 in 0914 AM 08/06 Public Mellette 4.25 in 1109 AM 08/06 Mesonet Roscoe 6 W 4.23 in 0720 AM 08/06 COCORAHS Conde 4.10 in 0907 AM 08/06 Public Vivian 4 N 4.03 in 0716 AM 08/06 COCORAHS Mellette 3.98 in 1150 AM 08/06 CWOP Presho 7.6 N 3.96 in 0800 AM 08/06 COCORAHS Bullhead 10 S 3.82 in 1106 AM 08/06 RAWS Faulkton 1 NW 3.81 in 0800 AM 08/06 COOP Timber Lake 6.6 E 3.78 in 0800 AM 08/06 COCORAHS Hecla 5 NE 3.77 in 0700 AM 08/06 UCOOP 4 E Brentwood Colony 3.70 in 0955 AM 08/06 Public Roscoe 3.60 in 0710 AM 08/06 COOP Miller 7.2 NW 3.40 in 0846 AM 08/06 COCORAHS Aberdeen 1 SSW 3.34 in 0607 AM 08/06 COCORAHS Gann Valley 3 NNE 3.28 in 0740 AM 08/06 COOP Danforth 5 E 3.19 in 1141 AM 08/06 RAWS Aberdeen Rgnl AP 3.19 in 1145 AM 08/06 ASOS Doland 2 S 3.18 in 0800 AM 08/06 UCOOP Aberdeen 3 E 3.10 in 0600 AM 08/06 COOP Aberdeen 1.0 NNE 3.01 in 0700 AM 08/06 COCORAHS Faulkton 3.8 W 2.90 in 0700 AM 08/06 COCORAHS Murdo 2.90 in 0900 AM 08/06 COOP Aberdeen 1 NNE 2.89 in 0800 AM 08/06 COCORAHS Aberdeen 0.6 NNE 2.86 in 0900 AM 08/06 COCORAHS Westport 2 NW 2.83 in 0630 AM 08/06 COOP 1 SSW Redfield 2.82 in 1115 AM 08/06 Mesonet Aberdeen 1 WSW 2.80 in 0700 AM 08/06 COCORAHS Isabel 9.5 NE 2.80 in 0800 AM 08/06 COCORAHS Wessington 7.0 SW 2.77 in 0738 AM 08/06 COCORAHS Aberdeen 2.76 in 1147 AM 08/06 CWOP Aberdeen 1 ESE 2.72 in 0600 AM 08/06 COCORAHS Frederick 8.4 SW 2.70 in 0700 AM 08/06 COCORAHS Reliance 4 ENE 2.70 in 0800 AM 08/06 COCORAHS Groton 2.70 in 1145 AM 08/06 CWOP Harrold 4 ESE 2.61 in 0800 AM 08/06 COCORAHS Kennebec 8 SSW 2.60 in 0700 AM 08/06 COCORAHS Okaton 3 NW 2.57 in 0730 AM 08/06 COCORAHS Estelline 7.7 WSW 2.53 in 0800 AM 08/06 COCORAHS Bear Creek 2.48 in 1052 AM 08/06 RAWS Aberdeen 9 NW 2.46 in 1145 AM 08/06 CWOP Aberdeen 5.5 NNW 2.44 in 0700 AM 08/06 COCORAHS 6 NE Roscoe 2.42 in 0800 AM 08/06 COCORAHS Aberdeen 7.5 NNE 2.38 in 0700 AM 08/06 COCORAHS Hoven 2 N 2.37 in 0900 AM 08/06 COCORAHS Hayti 0.1 WNW 2.31 in 0800 AM 08/06 COCORAHS Castlewood 2.31 in 0800 AM 08/06 COOP Pierre 7 N 2.30 in 0700 AM 08/06 COCORAHS Britton 6.3 NNE 2.26 in 0700 AM 08/06 COCORAHS Turton 2.24 in 0700 AM 08/06 UCOOP Turton 2.24 in 0700 AM 08/06 COCORAHS Aberdeen 9 NW 2.24 in 0900 AM 08/06 COCORAHS Aberdeen 1 SE 2.23 in 1145 AM 08/06 CWOP Pierre 7 N 2.19 in 0700 AM 08/06 COCORAHS Estelline 2.19 in 1145 AM 08/06 CWOP Roslyn 2 SE 2.18 in 0700 AM 08/06 COCORAHS Pierre Muni AP 2.16 in 1053 AM 08/06 ASOS Long Lake 3.1 WSW 2.13 in 0800 AM 08/06 COCORAHS Westport 0.5 N 2.12 in 1100 AM 08/06 HADS Barnard 2.12 in 1145 AM 08/06 CWOP Richmond Lake Rec Area 5 SSW 2.11 in 1145 AM 08/06 CWOP Pierre 2.11 in 1146 AM 08/06 CWOP Holabird 8.5 N 2.10 in 0700 AM 08/06 COCORAHS Aberdeen 6.7 W 2.10 in 0700 AM 08/06 COCORAHS Columbia 6 SW 2.09 in 1045 AM 08/06 UCOOP Aberdeen 6 NW 2.07 in 1045 AM 08/06 UCOOP Aberdeen 7.2 NW 2.05 in 0700 AM 08/06 COCORAHS Agar 9.7 W 2.03 in 0800 AM 08/06 COCORAHS Hayti 1 W 2.03 in 0800 AM 08/06 COOP Mobridge Muni AP 2.02 in 1052 AM 08/06 ASOS Pierre 2 NNE 1.99 in 0700 AM 08/06 COCORAHS Kennebec 2.0 S 1.96 in 0700 AM 08/06 COCORAHS Eureka 11 WSW 1.96 in 0700 AM 08/06 COCORAHS Wetonka 3.5 NE 1.94 in 0800 AM 08/06 COCORAHS Kennebec 0.5 SE 1.86 in 0700 AM 08/06 COCORAHS Watertown 7 SW 1.86 in 0700 AM 08/06 COCORAHS Aberdeen 0.5 E 1.86 in 1045 AM 08/06 HADS Pierre 11 NNE 1.84 in 0800 AM 08/06 COCORAHS Lake City 4.1 SE 1.83 in 0830 AM 08/06 COCORAHS 8.3 SE Forbes 1.78 in 1131 AM 08/06 UCOOP Frederick 1.72 in 1145 AM 08/06 CWOP Lowry 1 WNW 1.70 in 0615 AM 08/06 COCORAHS Miller 0.3 SSW 1.70 in 0948 AM 08/06 COCORAHS Seneca 8.3 SSW 1.66 in 0700 AM 08/06 COCORAHS Presho 11.1 S 1.65 in 0746 AM 08/06 COCORAHS 2 E Sisseton 1.65 in 1056 AM 08/06 AWOS Murdo 11.6 W 1.61 in 0700 AM 08/06 COCORAHS Pierre 11.3 NE 1.60 in 0600 AM 08/06 COCORAHS Hayes 6 E 1.60 in 0600 AM 08/06 UCOOP Harrold 5 N 1.58 in 0800 AM 08/06 COCORAHS Vivian 5 SSW 1.58 in 0800 AM 08/06 COCORAHS Harrold 14 NNW 1.55 in 0800 AM 08/06 COCORAHS Sisseton 3 W 1.51 in 0700 AM 08/06 UCOOP Sisseton 3 W 1.51 in 0700 AM 08/06 COCORAHS Eureka 13 ENE 1.50 in 1115 AM 08/06 RAWS Claremont 2 SSE 1.49 in 0700 AM 08/06 COCORAHS Blunt 5.4 S 1.35 in 0700 AM 08/06 COCORAHS Claremont 0.3 W 1.34 in 0700 AM 08/06 COCORAHS Onaka 3 SW 1.33 in 1145 AM 08/06 AWS Harrold 11.5 NNW 1.30 in 0700 AM 08/06 COCORAHS Grenville 6.6 ENE 1.30 in 0800 AM 08/06 COCORAHS Britton 1.26 in 0700 AM 08/06 COOP Pierre 1 WSW 1.24 in 0700 AM 08/06 COCORAHS Oacoma 17 SSW 1.22 in 0700 AM 08/06 COCORAHS Estelline 1.21 in 1145 AM 08/06 CWOP Pierre 1.19 in 0635 AM 08/06 UCOOP Fort Pierre 0.5 SE 1.17 in 0700 AM 08/06 COCORAHS Eureka 1.16 in 0800 AM 08/06 COCORAHS Watertown 1.13 in 0600 AM 08/06 COOP Watertown 3.8 ESE 1.13 in 0647 AM 08/06 COCORAHS Lily 6 ENE 1.08 in 0700 AM 08/06 COCORAHS Watertown 2.3 E 1.08 in 0800 AM 08/06 COCORAHS Onida 3 W 1.07 in 0700 AM 08/06 COCORAHS Pierre 1 S 1.06 in 0700 AM 08/06 COCORAHS Big Stone City 5.0 WNW 1.05 in 0600 AM 08/06 COCORAHS Clark 1.00 in 0600 AM 08/06 COOP Observations are collected from a variety of sources with varying equipment and exposures. We thank all volunteer weather observers for their dedication. Not all data listed are considered official.
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