Drought Conditions Adnan Akyuz Ph D NDSU AES

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Drought Conditions Adnan Akyuz, Ph. D. NDSU, AES State Climatologist Updated 2/15/2018

Drought Conditions Adnan Akyuz, Ph. D. NDSU, AES State Climatologist Updated 2/15/2018

Ranking of Precipitation in various time scales September-November December-January Negative numbers indicate drier than

Ranking of Precipitation in various time scales September-November December-January Negative numbers indicate drier than long-term (1901 -2000) average

Divisional Temperature Anomalies September-November December-January Positive numbers indicate warmer than the long-term (1901 -2000)

Divisional Temperature Anomalies September-November December-January Positive numbers indicate warmer than the long-term (1901 -2000) average

30 -Day Precipitation Total Accumulation % of Normal

30 -Day Precipitation Total Accumulation % of Normal

Long Term Precipitation % of Normal 60 Days 90 Days

Long Term Precipitation % of Normal 60 Days 90 Days

Cumulative % area (% Change from previous week) D 1 65% (+2%) None 3%

Cumulative % area (% Change from previous week) D 1 65% (+2%) None 3% (0%) D 2 4% (0%) DO 97% (0%)

State Coverage and Intensity North Dakota State Drought Severity and Coverage (Last 4 weeks)

State Coverage and Intensity North Dakota State Drought Severity and Coverage (Last 4 weeks) D 2 D 1 DO 2/13 2/6 1/30 1/23 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0

Drought Change One-week Change 4 -week Change

Drought Change One-week Change 4 -week Change

Drought Severity and Coverage Index (Statewide) 329 (Aug 8, 2006) 295 (Aug 8, 2017)

Drought Severity and Coverage Index (Statewide) 329 (Aug 8, 2006) 295 (Aug 8, 2017) 166 (+2) *Drought Severity and Coverage Index = DOx 1+D 1 x 2+D 2 x 3+D 3 x 4+D 4 x 5 *Akyuz (2007)

Accumulated Drought Severity and Coverage Index (Statewide) 19, 319 9, 530 10, 642 9653

Accumulated Drought Severity and Coverage Index (Statewide) 19, 319 9, 530 10, 642 9653 *Numbers indicate the area under the DSCI Index Curve 2116 1714 7204 *Akyuz (2017)

7 -day Forecast Thu 7 am, Feb 15 through Thu 7 am, Feb 23

7 -day Forecast Thu 7 am, Feb 15 through Thu 7 am, Feb 23

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

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

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

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

3 -Mounth Outlook: Mar through May Precipitation Temperature

3 -Mounth Outlook: Mar through May Precipitation Temperature