1. State Climate Office Weekly Drought Update
Adnan Akyuz, Ph.D.
NDSU, AES
State Climatologist
Last Update: 8/29/2019

2. US Drought Monitor

3. Divisional Precipitation Anomalies and Rankings (Last Month)
July 2019 (Statewide: 23rd Wettest)
July 2019 Ranking Table by Crop Districts
Negative numbers indicate drier than long-term ( ) average.
Lower rankings indicate historically drier conditions on record (125 years total).

4. Divisional Precipitation Anomalies and Rankings (Last 3 Months)
May-July 2019 (Satewide:62nd Driest)
May-July 2019 Ranking Table by Crop Districts
Negative numbers indicate drier than long-term ( ) average.
Lower rankings indicate historically drier conditions on record (125 years total).

5. Last 30-Day Precipitation
Total Accumulation
% of Normal
(NDAWN Images)

6. Long Term Precipitation % of Normal
Last 60 Days
Last 90 Days
(NDAWN Images)

7. (% Change from previous week)
Cumulative % area
(% Change from previous week) DO
19%
(-8%) D1 7%
(0%) D2 1%
(0%)
None
81%
(+8%)

8. Drought Change
1-week Change
4-week Change

9. State Coverage and Intensity

10. Drought Severity and Coverage Index (Statewide)
Highest DSCI Ever: 329
(Aug 8, 2006)
Highest DSCI this year: 70
(Jun 18, 2019)
Current DSCI: 26
Change since last week: -8
Drought Severity and Coverage Index = ADO + 2AD1 + 3AD2 + 4AD3 + 5AD4 (Akyüz, 2007)
Where: A is a % of the state covered under the corresponding D-severity

11. Accumulated Drought Severity and Coverage Index (Statewide)
538
10,642
19,319
9,530
9653
2116
11,991
1714
Numbers indicate the area under the DSCI Index Curve (Accumulated DSCI*) which is directly correlated with the accumulated drought impact in the state.
*DSCI values are accumulated since the first week the drought category is at last D1 anywhere in the state.
Akyuz (2017)

12. Soil Moisture and Bare Soil Temperature
Soil Moisture Departure from Normal
5-week Evaporative Demand Drought Index (EDDI)
(40mm = 1.6”)

13. Corn GDD Accumulation Forecast*
Median First day of Fall Frost: Oct 9
Black Layer: Oct 9
Earliest First Day of Fall Frost: Sep 20
This graphic is created based on 90-day corn, planted in Cass county on May 15. It shows estimated date of maturity(Black Bar) with respect to hard freeze climatology (Blue Bars).
Latest First Day of Fall Frost: Nov 3
*U2U Decision Support Tools:

14. Weekly Drought Impact Collection Based on the NDSU Weekly Survey of Extension Offices
Williams (Clair Keene): Near Normal. About 0.5" rain in Williams Co late last week. Too late for small grains and pulses, but will help soybean crop.
Ward (Paige Brummund): Mildly Dry
McHenry (Rachel Wald): Severely Dry. The grass is gone, where it isn't gone it is very crunchy as you walk out into it. Grass hoppers have been a big concern in the area because they are everywhere. Later season crops show stress from lack of moisture. Ranchers are struggling to find enough forages and they will soon begin feeding, normally feeding starts in October/November. Soil moisture is not there.
Grand Forks (Carrie Knutson): Wetter in the southeast portion, Normal to mildly dry in the north and west.
Mercer (craig askim): Near Normal. Rainfall of about an inch this week so over last two weeks county has anywhere from 1.5 to 3 inches pastures, corn and sunflowers have greened up and things look good at the present time. Hay is still a little short, in some area a second cutting will not be possible. Things look ok for the present time and cooler temps are helping.

15. Weekly Drought Impact Collection Based on the NDSU Weekly Survey of Extension Offices
McKenzie (Devan Leo): Mildly Wet. We have had an excess of rain and as a result, have higher ground soil levels. Many pastures are moderately recovering with livestock still grazing them. Everything is still green except, of course, those crops trying to cure out. Cool season grasses are mostly headed out and cured off as well, but the landscape overall, is in relatively good shape.
McKenzie (Kim Neprash): Near Normal.
Oliver (Rick Schmidt): Mildly Wet. Recent rains have put us in a Mildly Wet condition for this time of year. We haven't been getting large rains, but small rains and high humidity have slowed haying and harvest. Cooler than normal temperature has also slowed crop development and delayed harvest of small grains.
Wells (Lindsay Maddock): The north end of the county has received quite a bit less moisture through growing season than the south end. Small grains yields are coming in pretty varied in northern part of county depending how many of the rains they got in on. If the rain missed them the yield likely is reflecting it.

16. Weekly Drought Impact Collection Based on the NDSU Weekly Survey of Extension Offices
Foster (karl hoppe): Near Normal. Continue to receive enough timely rains to keep crop green!
Slope (Shelby): Near Normal.
Morton (Renae Gress): Mildly Wet.
Logan (Sheldon Gerhardt): Mildly Wet.

17. Drought Pictures
Near Minnewaukan (Benson County) drought stress on soybeans. Photo taken on August 22, 2019 by Scott Knoke, NDSU.

18. 7-Day Forecast (Through noon Thu, Sep 5)

19. 14-Day Forecast (Through noon Thu, Sep 12)

20. Week 3 to 4 Forecast
Precipitation
Temperature

21. Fall (Sep-Nov) 2019 Outlook
Precipitation
Temperature