NOUS41 KWBC 031216

PNSWSH

 

Technical Implementation Notice 13-44

National Weather Service Headquarters Washington DC

717 AM EST Tue Dec 3 2013

 

To:         Subscribers:

            -Family of Services

            -NOAA Weather Wire Service

            -Emergency Managers Weather Information Network

            -NOAAPORT

            Other NWS Partners, Users and Employees

 

From:       Tim McClung

            Chief, Science Plans Branch

            Office of Science and Technology

 

Subject:    Addition of SREF Products to NOAAPORT to Support

            Ensemble River Forecasts at RFCs Effective

            February 18, 2014

 

Effective on or around February 18, 2014, beginning with the 1500

Universal Coordinated Time (UTC) model runs, the National Centers

for Environmental Prediction (NCEP) will begin disseminating

additional products from the Short Range Ensemble Forecast (SREF)

System on NOAAPORT and the Satellite Broadcast Network (SBN). 

These products are being added to support the meteorological

model ensemble river forecasts (MMEFS) being generated by the

Northeast, Middle Atlantic, Ohio, and Southeast River Forecast

Centers. The MMEFS forecasts are online at:

 

http://www.erh.noaa.gov/mmefs/index.php

 

The SREF products being added are the total accumulated

precipitation (ACAP) and the 2 meter AGL temperature. These SREF

products will be on a 32 km Lambert Conformal grid (Grid # 221)

from each of the 4 daily cycles of the SREF (03, 09, 15, and 21

UTC) for forecast projections at 3-hourly increments from 00 to

87 hours. 

 

The data will be transmitted in GRIB2 format with the following

WMO header format:

 

T1T2A1A2ii cccc where

 

The T1 and A2 combination specifies the forecast time (ranging

from 00 to 87 hours).

 

If T1=L, then the forecast hour for A2 is: A=00, B=06, C=12,

D=18, E=24, F=30, G=36, H=42, I=48, J=60, K=72, L=84.

 

If T1=M, then the forecast hour for A2 is: B=03, E=09, H=15,

K=21, L=27, O=33, P=39, Q=45, R=51,  M=54, S=57, Z=63, N=66,

Z=69, Z=75, T=78, Z=81, Z=87.

 

A1 = E Grid ID # 221 (North American Master Grid - Lambert

Conformal)

 

T2 specifies the parameters as follows:  E = Total

Precipitation  (APCP), T = Temperature 2 m above ground (TMP)

 

ii specifies the levels as follows: 98 = surface of Earth

 

cccc = KWBL 

 

For questions regarding these changes, please contact:

 

Jeff Waldstreicher

Scientific Services Division

NWS Eastern Region Headquarters

Bohemia, New York

631-244-0131

jeff.waldstreicher@noaa.gov

or

Rebecca Cosgrove

NCEP Central Operations

College Park, Maryland

ncep.pmb.dataflow@noaa.gov

 

NWS National Technical Implementation Notices are online at:

 

http://www.nws.noaa.gov/os/notif.htm

 

$$