Adnan Akyuz, Ph.D. NDSU, AES State Climatologist Updated 7/24/2017 Drought Conditions Adnan Akyuz, Ph.D. NDSU, AES State Climatologist Updated 7/24/2017

Prelude to Drought 2017 for ND Period Precipitation Ranking Fall 2016 14th Wettest Winter 2016-17 6th Wettest September through February 9th Wettest 6-mo Period March 2017 48th Driest April 2017 34th Driest May 2017 15th Driest Spring 2017 9th Driest Spring June 14th Driest March-June 7th Driest 4-mo Period

Precipitation Accumulation Since March 1 in Select Locations in ND (Ranking) Precipitation Totals Since March 1st Weekly Change Fargo 14th Driest (Record History: 137 years) +1 Grand Forks 44th Driest (Record History: 125 years) +3 Bismarck 4rd Driest (Record History: 143 years) Williston 8th Driest (Record History: 124 years) Minot 5th Driest (Record History: 113 years) -1 Bowman 3rd Driest (Record History: 103 years)

90-Day % of Normal Rain

30-Day % of Normal Rain

(% Change from previous week) Cumulative % area (% Change from previous week) 74% (+1) 94% (0) 57% (+8) 6% (0) 40% (+6) 6% (+6)

Drought Change 1 Week 4 Weeks

State Coverage and Intensity (Time Scale) *Drought Severity and Coverage Index = DOx1+D1x2+D2x3+D3x4+D4x5 *Akyuz (2007)

State Coverage and Intensity (Spatial Scale) 10/2/2012 (Index:256) 6/3/2008 (Index: 264)

State Coverage and Intensity (Spatial Scale) 8/8/2006 (Index:329) 07/18/2017 (Index: 257)

7-day Forecast Mon 7am, July 24 through Mon 7am, July 31

Longer-term Forecast 8-14 Day Precipitation August through October