Public Information Statement
Issued by NWS Cheyenne, WY

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NOUS45 KCYS 082234
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NEZ002-003-019>021-054-055-095-096-WYZ101>119-091045-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
434 PM MDT WED OCT 8 2014

TO:      FAMILY OF SERVICES/FOS/SUBSCRIBERS...NOAA WEATHER WIRE
         SERVICE/NWWS/SUBSCRIBERS...EMERGENCY MANAGERS WEATHER
         INFORMATION NETWORK/EMWIN/SUBSCRIBERS...NOAAPORT
         SUBSCRIBERS...NATIONAL WEATHER SERVICE/NWS/PARTNERS AND
         OTHER USERS...AND NWS EMPLOYEES

FROM:    MIKE JAMSKI
         HYDROLOGY PROGRAM MANAGER
         NWSFO CHEYENNE WYOMING

SUBJECT: ADJUSTMENT TO SERVICES PROVIDED TO THE CHEYENNE HYDROLOGIC
         SERVICE AREA.

...NEW PROBABILISTIC RIVER OUTLOOK AVAILABLE...

BEGINNING 21 OCTOBER 2014...THE NATIONAL WEATHER SERVICE IN CHEYENNE
WILL IMPLEMENT THE ISSUANCE OF NON-EXCEEDANCE PROBABILITIES AS PART
OF THE CURRENT SUITE OF AHPS PROBABILISTIC OUTLOOKS FOR ALL CURRENTLY
ESTABLISHED PROBABILISTIC FORECAST POINTS. THE NON-EXCEEDANCE OUTLOOKS
WILL INDICATE THE PROBABILITY OF FALLING TO LISTED STAGE LEVELS DURING
THE THREE MONTH VALID TIME PERIOD. THIS PRODUCT IS AIMED AT HELPING
DECISION MAKERS DETERMINE THE LONG RANGE POSSIBILITY OF LOW WATER.

ADVANCED HYDROLOGY PREDICTION SERVICE OR AHPS IS THE MODERNIZATION OF
HYDROLOGY SERVICES TO IMPROVE FLOOD FORECASTS AND WATER RESOURCES
INFORMATION. GRAPHICAL INFORMATION IS AVAILABLE ON THE INTERNET AT
HTTP://WATER.WEATHER.GOV/ (THE WEB ADDRESS IS LOWER CASE AND ONCE
ON THE WEB PAGE YOU CAN ZOOM INTO YOUR RESPECTIVE COUNTY). TO FIND
THE NON-EXEEDANCE PROBABILITY GRAPHS...SELECT YOUR RIVER OF INTEREST
AND GO TO THE HYDROGRAPH PAGE FOR THAT RIVER. SCROLL TO THE BOTTOM
OF THE HYDROGRAPH PAGE AND UNDER THE ADDITIONAL INFORMATION TAB...
SELECT THE LINK TITLED: "HOW LOW COULD THE RIVER GET?". TO SEE AN
EXAMPLE OF THE NON-EXCEEDANCE PROBABILITY GRAPH FOR THE FORECAST
POINT ON THE NORTH PLATTE RIVER AT BRIDGEPORT NEBRASKA...GO TO THE
FOLLOWING LINK:

WWW.CRH.NOAA.GOV/AHPS2/NON_EXCEED.PHP?WFO=CYS&GAGE=BGPN1

INFORMATION ON THE INTERNET FOR THESE PROBABILISTIC AHPS SITES WILL
INCLUDE:

- GRAPHS SHOWING CURRENT AND FORECAST STAGE/RESERVOIR POOL HEIGHTS

- GRAPHS SHOWING CHANCES OR PROBABILITIES OF EXCEEDING CERTAIN
STAGE/RESERVOIR POOL HEIGHTS

- GRAPHS SHOWING CHANCES OR PROBABILITIES OF FALLING TO CERTAIN
STAGE/RESERVOIR POOL INFLOWS

- A MAP SHOWING THE LOCATION OF THE GAUGES AND FEMA NATIONAL FLOOD
HAZARD LEVELS

THE NATIONAL WEATHER SERVICE WELCOMES PUBLIC FEEDBACK. IF YOU HAVE
ANY QUESTIONS OR COMMENTS ABOUT THIS CHANGE...PLEASE CONTACT:

         MIKE JAMSKI
         HYDROLOGY PROGRAM MANAGER
         NATIONAL WEATHER SERVICE
         1301 AIRPORT PARKWAY
         CHEYENNE WY 82001-1549
         PHONE:307-772-2468
         E-MAIL: W-CYS.WEBMASTER@NOAA.GOV

$$







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