RSS FeedsHydrologic Summary for April 2004 for the Area Served by the NWS Forecast Office at Sioux Falls, SD
Summary
April saw a return to warm and dry conditions across the region. Thunderstorms did produce locally heavy rain in some areas, but on the average, precipitation was below normal.
Flooding
There was no river flooding across the region in April. However, a line of thunderstorms did produce heavy rainfall across extreme southeastern South Dakota on the evening of April 18. There was some minor urban flooding and rapid rises on area creeks as a result of the heavy rains, but no significant damage.
General Hydrologic Information
Temperatures in April were above normal. Average temperatures for the month were generally 2 to 4 degrees above the 30 year average.Precipitation for the month was below normal for most areas. The exception was in northwest Iowa and extreme northeast Nebraska, where monthly total rainfall was near normal. The remainder of the region reported totals that were generally 0.50 to 1.50 inch below normal.
Soil Moisture conditions at the end of April were below normal for most of the region. Deficits of 1 to 2 inches were being reported in most areas. The National Drought Monitor indicated near normal conditions across northwest Iowa at the end of the month, with abnormally dry conditions persisting in southeast South Dakota and extreme southwest Minnesota, moderate drought in the extreme northern portions of the regions, and severe drought in the extreme western areas.
Mike Gillispie
May 10, 2004
May 10, 2004
