During the summer and early fall of 2012, southern Wisconsin experienced a challenging period of drought. In sharp contrast, the first half of 2013 has experienced very wet conditions with precipitation amounts now incredibly running up to 15 inches above normal through June 26th.
The graphics below depict accumulated precipitation for the period January-June, for 2013 and for 2012. In addition, they also show the normal precipitation along with the wettest and driest years on record for this period. The green line is 2013 (note in the Madison graphic this line is overlapped by the blue line), magenta is 2012, blue is the wettest on record, red is the driest and normal precipitation is the smooth brown line.
For the year to date (ending at midnight on the 26th of June), Milwaukee is the 3rd wettest on record with precipitation running 8.88 inches above normal. The total since January 1st was 24.89 inches. The wettest year was 1876 with 28.80 inches. Madison is the wettest, running 14.81 inches above normal. The total precipitation at Madison since January 1st was 30.58 inches.
The images below show a larger overview of the excessive rainfall across southern Wisconsin over the past week, 30 days, and year-to-date. The graphics show estimated rainfall and percent of normal rainfall for the designated time periods. Click each image for a larger version and see the legend on the right side of the graphics for the rainfall amounts.
Note portions of southwest Wisconsin have received over 600% of the normal amount of precipitation over the past week! Many county roads were flooded and closed across Dane, Green, Rock, and Walworth Counties where 5 to 10 inches of rain fell in a 2 day period. There was also significant flash flooding in Madison with some minor mudslides and reports of stalled vehicles in 3 feet of water.
The very warm and very moist weather pattern we have been in over the last week or so has contributed to the very heavy rainfall amounts. We could still see a few more rounds of showers and thunderstorms across southern Wisconsin before the pattern finally breaks later this weekend.
7 day total and percent of normal precipitation ending at 7 am 6/27:
|7 Day Total||Percent of Normal|
30 day total and percent of normal precipitation ending at 7 am 6/27:
|30 Day Total||Percent of Normal|
Year total and percent of normal precipitation ending at 7 am 6/27:
|Year Total||Percent of Normal|
Individual rainfall totals since June 19th that are greater than 5.00 inches are shown below. Note, most of the precipitation fell after the 20th.
Click here for information about record river crests this week.