Flood Potential Outlook
Issued by NWS Shreveport, LA

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Probabilistic Hydrologic Outlook
National Weather Service Shreveport LA
1249 PM CDT Thu Jul 20 2017


...Advanced Hydrologic Prediction Service (AHPS) long range
probabilistic outlook for the Sabine River basin of East Texas...


In the table below...the 90 through 10 percent columns indicate the
chance the river could rise above the listed stage levels during
the next 90 days.  For example...the Sabine River near Mineola
Texas flood stage is 14 feet.  There is a 50 percent chance the
Sabine River will rise above 8.2 feet during the next 90 days.


        Chance of exceeding stages at specific locations
               valid for July 20 - October 19 2017


     Location      FS  90%  80%  70%  60%  50%  40%  30%  20%  10%
------------------ --  ---  ---  ---  ---  ---  ---  ---  ---  ---

Lake Fork Creek
 Quitman 4S        16  2.8  2.9  3.0  3.0  3.1  3.4  3.8  5.1 14.5
Sabine River
 Mineola 4S        14  5.2  5.6  6.1  7.1  8.2  9.4 10.6 14.6 16.8
 Gladewater 3WSW   26  6.7  7.3  7.9  8.5  8.9  9.4 11.6 16.1 20.7
 Longview          25  4.9  5.7  6.3  7.3  7.8  8.9 11.0 15.9 21.1
 Beckville 8NE     26  8.4  8.5  9.1  9.8 10.2 11.4 12.6 14.2 19.1
 Logansport        28 23.3 23.3 23.3 23.3 23.3 23.3 23.3 23.3 23.3
Big Sandy Creek
 Big Sandy 4NE     17  4.4  4.4  4.6  5.6  6.2  7.1  8.4  9.8 11.4
Rabbit Creek
 Kilgore           10  4.4  4.4  4.4  4.4  5.0  6.2  8.2 10.2 11.5


 Location     90%   80%   70%   60%   50%   40%   30%   20%   10%
 ----------- ----- ----- ----- ----- ----- ----- ----- ----- -----
Lk Cherokee  280.2 280.2 280.2 280.2 280.2 280.2 280.2 280.2 280.3
Lk Martin    305.8 305.8 305.8 305.8 305.9 305.9 306.1 306.1 306.2
Lk Murvaul   265.1 265.1 265.2 265.2 265.3 265.3 265.4 265.8 266.2

This long range probabilistic outlook uses probabilities computed
using multiple scenarios from 60 years of historical climatological
and stream flow data.  These probabilities also account for the
current river flows and soil moisture conditions.  By providing the
complete range of probabilistic numbers...the level of risk
associated with long range planning decisions can be determined.

Additional supportive data and explanations are available on the
internet at this URL:  http://ahps.srh.weather.gov/index.php?wfo=shv
(internet address URL is all lower case).

Long range probabilistic outlooks are issued during the third
Thursday of every month.

$$

VIII.



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