Flood Potential Outlook
Issued by NWS Houston/Galveston, TX

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FGUS74 KHGX 201628
ESFHGX
210428-
PROBABILISTIC HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON, TX
1028 AM CST THU NOV 20 2014


...ADVANCED HYDROLOGIC PREDICTION SERVICE (AHPS) LONG RANGE
PROBABILISTIC OUTLOOK FOR THE SAN BERNARD RIVER BASIN IN SOUTHEAST TEXAS...

THE HOUSTON/GALVESTON NATIONAL WEATHER SERVICE OFFICE HAS
IMPLEMENTED ADVANCED HYDROLOGIC PREDICTION SERVICE (AHPS) FOR THE
SAN BERNARD RRIVER BASIN IN SOUTHEAST TEXAS. AHPS ENABLES THE
NATIONAL WEATHER SERVICE TO PROVIDE LONG-RANGE PROBABILISTIC
OUTLOOKS. THIS SERVICE IS ALSO AVAILABLE ON THE INTERNET.

IN THE TABLE BELOW...THE 90 THROUGH 10 PERCENT COLUMNS INDICATE THE
CHANCE THE RIVER COULD RISE ABOVE THE LISTED STAGE LEVELS IN THE
NEXT 90 DAYS. EXAMPLE: THE SAN BERNARD RIVER NEAR BOLING HAS A FLOOD
STAGE OF 18 FEET. THERE IS A 50 PERCENT CHANCE THE BOLING
FORECAST POINT WILL RISE ABOVE 11.7 FEET DURING THE NEXT 90 DAYS.

          CHANCE OF EXCEEDING STAGES AT SPECIFIC LOCATIONS
                     VALID [ 11/19/2014 - 2/18/2015 ]


LOCATION      FS(FT)  90%  80%  70%  60%  50%  40%  30%  20%  10%
-----------------------------------------------------------------------
 EAST BERNARD  17.0  11.2 13.9 14.6 15.1 15.5 15.9 16.2 16.8 17.5
 BOLING        18.0   5.3  8.0  9.1 10.6 11.7 12.6 14.2 16.6 19.8
 SWEENY        16.0  10.8 10.8 11.0 11.1 11.2 11.3 11.4 11.9 15.7


THIS LONG-RANGE PROBABILISTIC OUTLOOK CONTAINS NUMBERS THAT ARE
CALCULATED USING MULTIPLE SCENARIOS FROM 50 YEARS OF HISTORICAL
CLIMATOLOGICAL AND STREAM FLOW DATA. THESE NUMBERS ALSO TAKE
INTO ACCOUNT CURRENT CONDITIONS OF THE RIVER AND SOIL MOISTURE.
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 EXPLANATION ARE AVAILABLE ON THE
INTERNET AT: WWW.SRH.WEATHER.GOV/CGI-BIN/AHPS.CGI!HGX
(INTERNET ADDRESS IS ALL LOWER CASE).

LONG-RANGE PROBABILISTIC OUTLOOKS ARE ISSUED AROUND THE THIRD
THURSDAY OF EVERY MONTH.

$$




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