Drought Information Statement
Issued by NWS Aberdeen, SD

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AXUS73 KABR 191856
DGTABR
MNC011-155-SDC013-017-021-025-029-031-037-039-041-045-049-051-057-
059-065-069-075-085-089-091-107-109-115-117-119-129-211900-

Drought Information Statement
National Weather Service Aberdeen SD
156 PM CDT Thu Apr 19 2018 /1256 PM MDT Thu Apr 19 2018/

...DROUGHT CONDITIONS IMPROVING ACROSS THE REGION...

SYNOPSIS...

Since late February, the weather pattern has been wet with below
normal temperatures. More recently, frequent rounds of heavy snow
have moved across the region through the month of April as
temperatures remain cold. In fact, the first half of April was the
coldest on record for the area. The above normal precipitation has
allowed drought conditions to ease throughout the region, even over
central South Dakota. We have finally seen a removal of D2 (severe
drought) across central and western South Dakota.

D1 (Moderate) drought counties: Corson, western Dewey, northwest
Campbell.

D0 (Abnormally dry) counties: Jones, Stanley, eastern Dewey,
Campbell, Walworth, McPherson, Edmunds, Brown, Marshall, northern
Day, western Roberts.

SUMMARY OF IMPACTS...

STATE AND LOCAL ACTIONS:
None known.

SOIL MOISTURE CONDITIONS:
According to the latest release of the South Dakota Crop Progress and
Condition report for the week ending April 15th, topsoil moisture
was rated 18 percent short or very short. This is a 45 percent
improvement from February. Subsoil moisture was rated 37 percent
short or very short. This is a 26 percent improvement from February.
The recent pattern change to wetter conditions has added soil
moisture over the past couple months.

AGRICULTURAL IMPACTS:
The latest Crop Progress and Condition report rated winter wheat
conditions at 20 percent poor or very poor. This is a 12 percent
improvement from conditions in last month`s report.

RIVER AND STREAM FLOW CONDITIONS:
Many rivers and streams across the region are still affected by ice,
but there are some that are beginning to thaw and are showing near to
above normal stream flows. The Big Sioux River near and south of
Watertown has been near or into minor flood stage off and on over the
past month, and is once again approaching flood stage, or at least
forecast to approach flood stage.

FIRE DANGER IMPACTS:
The overall wetter conditions, combined with frequent periods of snow
pack have largely kept fire danger on the lower end thus far in
spring.

CLIMATE SUMMARY...

Many locations saw above normal precipitation in March, generally up
to a half inch above normal. Although, there remained a few pockets
of overall dryness across central South Dakota. Average temperature
was anywhere from 1 to 3 degrees below normal for much of the area.
Thus far in April, precipitation has been above normal across central
South Dakota, while northeast South Dakota and west central Minnesota
have been below normal. Temperatures in April have been much below
normal through the first half of the month. In fact, it has been the
record coldest first half of April in recorded history across central
and northeast South Dakota. For temperatures, the area is about 10 to
15 degrees below normal.

PRECIPITATION/TEMPERATURE OUTLOOK...

The latest 8 to 14 day outlook from the Climate Prediction Center
shows near normal temperatures, with near to below normal
precipitation. The latest one-month outlook shows equal chances for
above or below normal temperatures and precipitation.

HYDROLOGIC SUMMARY AND OUTLOOK...

According to the latest Probabilistic Hydrologic Outlook issued by
the National Weather Service in Aberdeen, the Big Sioux River from
Watertown to Castlewood has moderate to very high chances of reaching
minor flood stage in the next 90 days. Low to moderate chances exist
for this river to reach the moderate flood stage. For the James
River, moderate to high chances exist for minor flooding in the next
90 days. Chances for moderate flooding are generally 30 to 40
percent.

NEXT ISSUANCE DATE...

This product has no scheduled update since no counties in the
Aberdeen County Warning Area are in D2 (severe) drought. If drought
conditions worsen into D2, then additional Drought Information
Statements will be issued.

&&

RELATED WEB SITES...

Additional information on current drought conditions may be found at
the following web addresses:

US Drought Monitor...http://droughtmonitor.unl.edu
National Integrated Drought Information System...http://www.drought.gov
NOAA Drought Page...http://www.cpc.ncep.noaa.gov/products/Drought
High Plains Regional Climate Center...https://hprcc.unl.edu
Local Weather Information...http://www.weather.gov/abr
USDA Crop Information...http://www.nass.usda.gov/index.asp
South Dakota State Climate Office...https://climate.sdstate.edu
SDSU Extension...http://igrow.org
Drought Impact Reporter...http://droughtreporter.unl.edu/map

ADDITIONAL RIVER INFORMATION...

National Weather Service...http://water.weather.gov
US Geological Survey...https://www.usgs.gov/water
US Army Corps of Engineers...http://www.usace.army.mil

ACKNOWLEDGMENTS...

The Drought Monitor is a multi-agency effort involving the National
Weather Service and National Centers for Environmental Information,
the USDA, state and regional center climatologists and the National
Drought Mitigation Center. Information for this statement has been
gathered from NWS and FAA observation sites, state cooperative
extension services, the USDA, USACE and USGS.

QUESTIONS OR COMMENTS...

If you have questions or comments about this Drought Information
Statement, please contact:

National Weather Service
Travis Tarver
824 Brown County 14S
Aberdeen SD 57401
Phone...605-225-0519
travis.tarver@noaa.gov

$$
TMT


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