Drought Information Statement
Issued by NWS St. Louis, MO

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Drought Information Statement
National Weather Service Saint Louis MO
1139 AM CST Thu Feb 15 2018

...Extreme drought conditions have developed across portions of
east-central and southeastern Missouri...

SYNOPSIS...

Drier than normal conditions have largely persisted since
mid/late summer over much of the area. Over the past month,
precipitation deficits of 1-2 inches are common over the extreme
and severe drought areas.

SUMMARY OF IMPACTS...

Precipitation deficits of 8 to 16 inches since the middle of
August have resulted in several impacts across the area. Area
streamflows are very low for the date with many below the 10th
percentile and some at or near record low flows. Please see the
hydrological section below for more details on area streamflows.

Many local ponds and are also very low. In some locations water levels
are worse than the winter of 2012-2013.. This is causing some
farmers to cull their herds because there is not enough water for
livestock.

The dry conditions have also led to numerous grass fires over the
past couple of months.

CLIMATE SUMMARY...

Abnormally dry weather has persisted since the the middle of
summer. Precipitation deficits for this time period are on the
order of 8 to 16 inches across the area, with the highest
deficits across portions of east-central and southeastern
Missouri.

PRECIPITATION/TEMPERATURE OUTLOOK...

The outlook from the Climate Prediction Center (CPC) for the next
6-10 days favors above normal precipitation and temperatures.

In the week 2 timeframe, the CPC continues to favor both above
normal precipitation and temperatures across the mid-Mississippi
Valley.

HYDROLOGIC SUMMARY AND OUTLOOK...

Streams across Missouri and Illinois continue showing signs of
abnormal dryness to extreme drought. In the St. Louis service area,
7-day average flows along gaged streams throughout the Meramec River
basin indicate streamflow percentiles at or below 5 percent,
corresponding to extreme hydrologic drought.  The percentiles
improve to double digits across northeastern Missouri.  In Illinois,
small tributaries flowing into the Kaskaskia River also indicate
single-digit percentiles.  While there is improvement into northern
Illinois, most of central and southern Illinois exhibit streamflows
that correspond to severe and extreme hydrologic drought.

Meanwhile, flows remain near but below normal along the major
rivers. The Missouri, Mississippi, and Illinois rivers all have
flows between the 30th and 40th percentiles of historical flows, and
this is considered normal for this time of year.

While drought impacts are typically limited during the winter, we
continue to hear about the culling of livestock due to the lack of
water and feed.  Well water heights are becoming very low,
particularly in the Meramec River basin.

NEXT ISSUANCE DATE...

The next drought information statement is scheduled to be issued
by Thursday March 15, 2018 or earlier as conditions warrant.

&&

RELATED WEB SITES...

LOCAL WEATHER, CLIMATE, AND WATER INFORMATION:
http://www.weather.gov/saintlouis

MIDWEST CLIMATE CENTER DROUGHT INFORMATION PAGE:
http://mcc.sws.uiuc.edu/cliwatch/drought/drought.jsp

MISSOURI STATE CLIMATOLOGIST:
http://climate.missouri.edu
MISSOURI DNR DROUGHT PAGE:
http://www.dnr.mo.gov/env/wrc/droughtupdate.htm

ILLINOIS STATE CLIMATOLOGIST:
http://www.isws.illinois.edu/atmos/statecli
ILLINOIS WATER SURVEY DROUGHT PAGE:
http://www.isws.illinois.edu/hilites/drought/

U.S. DROUGHT MONITOR:
http://droughtmonitor.unl.edu/

U.S. DROUGHT PORTAL:
http://www.drought.gov

ADDITIONAL WATER INFORMATION:
NATIONAL WEATHER SERVICE ADVANCED HYDROLOGICAL PREDICTION
SERVICE (AHPS):  http://water.weather.gov
U.S. GEOLOGICAL SURVEY:  http://water.usgs.gov
ARMY CORPS OF ENGINEERS:  http://www.nwo.usace.army.mil/

CLIMATE PREDICTION CENTER:
http://www.cpc.ncep.noaa.gov/

ACKNOWLEDGMENTS...

The U.S. Drought Monitor is a weekly collaborative effort between
a number of state and federal agencies including the National
Weather Service, the U.S. Department of Agriculture, and the
National Drought Mitigation Center.

QUESTIONS OR COMMENTS...

If you have any questions or comments about this information,
please contact:

Mark Britt or
Jayson Gosselin
Climate Services Focal Points
--or--
Mark Fuchs
Senior Service Hydrologist

National Weather Service Saint Louis Missouri
636-441-8467
w-lsx.webmaster@noaa.gov

$$

Gosselin


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