ND Weekly Drought Update Adnan Akyuz, Ph.D. NDSU, AES State Climatologist Updated 3/15/2018

Divisional Precipitation Anomalies (Departures from Normal) Fall 2017: September-November Winter 2017-18: December-February Negative numbers indicate drier than long-term (1901-2000) average

Divisional Temperature Anomalies (Departures from Normal) Fall 2017: September-November Winter 2017-18: December-February Positive numbers indicate warmer than the long-term (1901-2000) average

30-Day Precipitation Total Accumulation % of Normal

Long Term Precipitation % of Normal 60 Days 90 Days

(% Change from previous week) Cumulative % area (% Change from previous week) D1 62% (-4%) None 3% (0%) D2 9% (+4%) DO 97% (0%)

State Coverage and Intensity

Drought Change One-week Change 4-week Change

Drought Severity and Coverage Index (Statewide) 329 (Aug 8, 2006) 295 (Aug 8, 2017) 163 (+4) *Drought Severity and Coverage Index = DOx1+D1x2+D2x3+D3x4+D4x5 *Akyuz (2007)

Accumulated Drought Severity and Coverage Index (Statewide) 7917 (+167) 9,530 10,642 9653 19,319 2116 1714 *Numbers indicate the area under the DSCI Index Curve *Akyuz (2017)

Soil Moisture and Snowpack Soil Moisture Departure from Normal Snow Water Equivalence 1-2” 2-4” Trace (40mm= 1.57”)

7-day Forecast* Thu 6am, Mar 15 through Thu 6am, Mar 22 *College of DuPage Next Generation Weather Lab (Displayed with permission)

14-day Forecast* Thu 00am, Mar 15 through Thu 00am, Mar 29 *College of DuPage Next Generation Weather Lab (Displayed with permission)

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

3-Mounth Outlook: April through June Precipitation Temperature