RSS FeedsHydrologic Summary for September 2003 for the Area Served by the NWS Forecast Office at Sioux Falls, SD
Summary
Three wet days between September 9th and 11th were enough to carry much of the region to above normal rainfall for the month. Temperatures returned to near normal after a hot summer. Minor flash flooding occurred in extreme northeastern Nebraska with the heavy rains on the evening of the 9th.
Flooding
The only flooding to occur in September was on the evening of the 9th in extreme northeastern Nebraska. A small creek west of Martinsburg in Dakota County briefly went out of its banks as 3 to 6 inches of rain fell.
General Hydrologic Information
Temperatures in September were near normal to below normal across the region, generally ranging from +1 to -3 degrees compared to the 30 year average.Precipitation for the month was below normal west of the James River. Monthly totals in this area were between 0.50 and 1.50 inch, which is 0.50 to 2 inches below normal. The southern and eastern portions of the region saw above to much above normal rainfall in September. Monthly totals were generally 3 to 6 inches in these areas, with a few isolated reports of over 7 inches for the month.
Soil Moisture conditions at the end of September were near normal along the Missouri River, from below Fort Randall Dam eastward into extreme northwestern Iowa. One to two inch deficits persisted across the northern, eastern, and extreme western portions of the region. The National Drought Monitor showed moderate drought across the northern and eastern portions of the region, with severe drought along and west of the Missouri River upstream of Fort Randall Dam. Near normal to abnormally dry conditions were shown for the central and southern parts of the area.
Mike Gillispie
October 10, 2003
October 10, 2003
