NATIONAL WEATHER SERVICE

JACKSON, MS

NEW ORLEANS/BATON ROUGE, LA

Pearl River Basin Watershed Town Hall March 17, 2015

http://www.weather.gov/janhttp://www.weather.gov/lix

PEARL RIVER BASIN

WFO JACKSON RESPONSIBILITY

WFO NEW ORLEANS/BATON ROUGERESPONSIBILITY

Weather Service Forecast OfficePEARL RIVER OPERATIONS

Collects And Quality Controls Hydrologic Data.

Coordinates Daily River Forecasts With The Lower Mississippi River Forecast Center (LMRFC).

WFO Jackson Coordinates Forecasts With LMRFC And Pearl River Valley Water Supply District (PRVWSD –Ross Barnett Reservoir).

Issues Flood Warnings And Flood Statements.

WFO Jackson Hosts High Flow Coordination Conference Calls For PRVWSD Operations And Jackson Forecast.

Briefs County/Parish Emergency Managers And Conducts Media Interviews.

RIVER AND RAIN GAGESUpper Pearl River

RIVER FORECAST POINTS

Rain Gage Network

Hourly rain gages

Out of service rain gages

Removed Rain Gages

Daily Rain Gages

River Gages

Forecast Gage

PEARL RIVER HIGH FLOW COORDINATION

CONFERENCE CALLS Purpose

Criterion

Procedures

PURPOSE OF COORDINATION CALLS To Discuss Differences In Ross Barnett Inflow Forecasts

Between The Vicksburg Corps of Engineers And The Lower Mississippi River Forecast Center .

To Receive A Briefing From United States Geological Survey On The River Gage Network And Gage Rating Status.

To Provide The Best Possible Information To The Pearl River Valley Water Supply District (Ross Barnett) To Assist Them With Reservoir Operations During Flood Events.

To Help Ensure All Agencies Are On The Same Page During A Flood.

CONFERENCE CALL CRITERION Criterion For Starting Coordination Calls

When Inflows Or Outflows Are Projected To Be Over 30,000 CFS. (Equates To 31-32 Foot River On the Jackson River Gage)

Those Involved: Weather Forecast Office (WFO) Jackson Weather Forecast Office (WFO) New Orleans – Baton Rouge Lower Mississippi River Forecast Center (LMRFC) USGS – Mississippi Water Science Center U.S. Army Corps Of Engineers (Vicksburg District) Pearl River Valley Water Supply District (PRVWSD) Bill Frederick – NWS Liaison To Mississippi Valley Division Of

The Corps of Engineers

CONFERENCE CALL PROCEDURES WFO JAN : Rainfall And Weather Forecast

USGS : Gage And Rating Status

LMRFC : Ross Barnett Inflow Forecasts And Jackson River Forecast

USACE Vicksburg District : Ross Barnett Inflow Forecasts

PRVWSD : Gives Report On Probable Reservoir Operations Based On Current Information.

Agree On An Official Jackson Forecast Based On Reservoir Operations.

Set Next Conference Call