Adnan Akyuz, Ph.D. NDSU, AES State Climatologist Updated 8/31/2017 Drought Conditions Adnan Akyuz, Ph.D. NDSU, AES State Climatologist Updated 8/31/2017

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 July 11th Driest March-July 3rd Driest 5-mo Period August (unofficial/preliminary) 21st Wettest March through August (unofficial/Preliminary) 9th Driest

Precipitation Accumulation Since March 1 in Select Locations in ND (Ranking) Precipitation Totals Since March 1st Weekly Change Fargo 10th Driest (Record History: 137 years) -1 Grand Forks 20th Driest (Record History: 125 years) -6 Bismarck 45th Driest (Record History: 143 years) -2 Williston 16th Driest (Record History: 124 years) Minot 7th Driest (Record History: 113 years) +2 Bowman 5th Driest (Record History: 103 years) Crosby 10th Driest (Record History: 111 years) Bottineau 35th Driest (Record History: 121 years)

7-Day Rainfall total

30-Day Rainfall Total Accumulation % of Normal

Long Term Precipitation % of Normal 60 Days 90 Days

(% Change from previous week) Cumulative % area (% Change from previous week) D1 66% (+3) DO 100% (0) D4 <1% (0) D3 22% (0) <1% (0) D2 51% (-2)

Drought Change One-week Change 4-week Change

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

State Coverage and Intensity

7-day Forecast Thu 7am, Aug 31 through Thu 7am, Sep 7

Medium Range Forecast 8-14 Day Precipitation 8-14 Day Temperature

Medium Range Forecast Week 3-4 Precipitation Week 3-4 Temperature

1-Month Forecast September Precipitation September Temperature

3-Mounth Outlook (September through November) Precipitation Temperature

Drought Outlook