1. ND Weekly Drought Update
Adnan Akyuz, Ph.D.
NDSU, AES
State Climatologist
Updated 4/5/2018

2. Divisional Precipitation Anomalies and Rankings
Fall 2017: September-November
Winter : December-February
-0.02”
68th
-0.55”
47th
-0.47”
30th
-0.80”
6th
-0.23”
58th
-0.52”
25th
-0.12”
64th
-0.24”
48th
-0.80”
49th
-0.47”
29th
-0.01”
70th
-0.26”
48th
-0.24”
67th
-0.36”
40th
-1.13”
29th
-0.34”
37th
-0.31”
76th
-0.48”
29th
Negative numbers indicate drier than long-term ( ) average.
Lower rankings indicate historically drier conditions on record (134 years total).

3. Divisional Temperature Anomalies and Rankings
Fall 2017: September-November
Winter : December-February
0.5F
68th
1.0F
76th
-0.2F
63rd
1.5F
74th
1.1F
80th
2.1F
78th
0.8F
74th
-0.1F
60th
1.2F
80th
1.5F
74th
1.3F
84th
1.0F
69th
0.8F
74th
-1.9F
44th
1.3F
84th
0.1F
60th
1.3F
86th
0.9F
70th
Negative numbers indicate cooler than long-term ( ) average.
Lower rankings indicate historically cooler conditions on record (134 years total).

4. 30-Day Precipitation
Total Accumulation
% of Normal

5. Long Term Precipitation % of Normal
60 Days
90 Days

6. (% Change from previous week)
Cumulative % area
(% Change from previous week) D1
42%
(-7%)
None
17%
(+8%) D2 5%
(1%) DO
83%
(-8%)

7. State Coverage and Intensity

8. Drought Change
One-week Change
4-week Change

9. Drought Severity and Coverage Index (Statewide)
329
(Aug 8, 2006)
295
(Aug 8, 2017)
129
(-15)
*Drought Severity and Coverage Index = DOx1+D1x2+D2x3+D3x4+D4x5
*Akyuz (2007)

10. Accumulated Drought Severity and Coverage Index (Statewide)
8340
(+129)
9,530
10,642
9653
19,319
2116
1714
*Numbers indicate the area under the DSCI Index Curve
*Akyuz (2017)

11. Soil Moisture and Snowpack
Soil Moisture Departure from Normal
Snow Water Equivalence
1-2”
0-Trace
(20mm = 0.8”)

12. 7-day GFS Forecast* Thu 1am, Apr 5 through Thu 1am, Apr 12
*College of DuPage
Next Generation Weather Lab (Displayed with permission)

13. 14-day GFS Forecast* Thu 1am, Apr 5 through Thu 1am, Apr 12
*College of DuPage
Next Generation Weather Lab (Displayed with permission)

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

15. 3-Mounth Outlook: April through June
Precipitation
Temperature