April Snows Bring May Outrage: Record Flooding Ahead
Map, national hydrologic assessment via NOAA-NWS
Though increased soil moisture levels may be a big improvement over this past summer’s drought, a serious problem remains: there’s been too much late snow and it’s going to melt quickly.
Based on the 21-MAR-2013 hydrologic map above, conditions along the Red River basin were quite bad; changes of major flooding were already predicted at that time. Since that report, the State Climatology Office at University of Minnesota recorded 4 inches of water (which includes 13 inches of snow) at their Twin Cities campus. This same station, however, received between 6-15 inches less snow over the last month than Fargo, North Dakota, located on the Red River.
The data used for the Percent Chance of Flooding map below is dated 15-APR-2013, before the final snowfall tally after The Weather Channel-branded winter storm “Xerxes” on 16-APR-2013. The area between Bismarck and Fargo received at least two feet of snow.
Graphic: NOAA Nat’l Operational Hydrologic Remote Sensing Center