IEM Daily Feature
Tuesday, 08 May 2018
Tuesday, 08 May 2018
Some Drought Help
Posted: 08 May 2018 05:32 AM
The weekly US Drought Monitor is released every Thursday and considers rainfall up until
7 AM the prior Tuesday. So the featured map combines the previous seven day
precipitation totals and last week's US Drought Monitor analysis. The cross-hatched areas
are in D0 status and the single slash are in D1. The map shows that some of the analyzed
drought area picked up some significant rains, but other parts did not. Some of the driest
areas in southern Iowa missed out again on the heaviest totals. The national drought
monitor attempts to paint the drought analysis with broad brush strokes, so these fine scale
precipitation totals make for a difficult analysis. These rainfall totals are also heavily based
on RADAR, which can sometimes over-estimate and sometimes under-sample
precipitating storms. Another confounding issues is that water demand is steadily
increasing as the growing season cranks into full speed, so it takes an inch or so of rainfall
just to keep pace with that demand.
Voting:
Good = 11
Bad = 0
Voting:
Good = 11
Bad = 0