NOUS41 KWBC 081133 AAB
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 05-43...AMENDED
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1240 PM EDT TUE OCT 11 2005


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

FROM:	  PAUL HIRSCHBERG
	  CHIEF... SCIENCE PLANS BRANCH
	  OFFICE OF SCIENCE AND TECHNOLOGY /OST/

SUBJECT:  AMENDED: ADDITION OF VISIBILITY AND OBSTRUCTION TO 
          VISION GUIDANCE TO ETA MOS PRODUCTS...IMPLEMETATION 
          DATE RESCHEDULED FOR NOVEMBER 1 2005.

REFER TO: TECHNICAL IMPLEMENTATION NOTICE /TIN/ 05-43
          TRANSMITTED ON JUNE 8 2005 AND AMENDED TIN 05-43 
          TRANSMITTED ON AUGUST 24 2005

AMENDED TO ANNOUNCE THAT IMPLEMENTATION HAS BEEN RESCHEDULED FOR 
NOVEMBER 1 2005.

ATTENTION USERS OF THE MODEL OUTPUT STATISTICS /MOS/ GUIDANCE:  
ON TUESDAY... NOVEMBER 1 2005... THE NWS WILL ADD VISIBILITY AND 
OBSTRUCTION TO VISION GUIDANCE TO THE ETA MOS SYSTEM.  THE TEXT 
PRODUCTS WILL CONTAIN CATEGORICAL GUIDANCE AS OUTLINED BELOW.  

VISIBILITY CATEGORICAL DEFINITIONS:
	1 = < ½ MI
	2 = ½ MI TO < 1 MI
	3 = 1 TO < 2 MI
	4 = 2 TO < 3 MI
	5 = 3 TO 5 MI
	6 = 6 MI
	7 = > 6 MI

OBSTRUCTION TO VISION CATEGORICAL DEFINITIONS:
	N = NONE OF THE FOLLOWING
	HZ = HAZE... SMOKE... DUST
	BR = MIST (FOG WITH VISIBILITY >= 5/8 MI)
	FG = FOG OR GROUND FOG (VISIBILITY < 5/8 MI)
	BL = BLOWING DUST... SAND... OR SNOW


THE BINARY UNIVERSAL FORM FOR THE REPRESENTATION OF 
METEOROLOGICAL DATA /BUFR/ PRODUCTS WILL CONTAIN PROBABILISTIC 
AND CATEGORICAL GUIDANCE.  THE COMMUNICATION IDENTIFIERS FOR ALL 
ETA MOS PRODUCTS ARE SHOWN IN TABLE 1.

TABLE 1.  COMMUNICATION IDENTIFIERS FOR THE ETA-BASED MOS TEXT 
AND BUFR PRODUCTS TO WHICH VISIBILITY AND OBSTRUCTION TO VISION 
GUIDANCE WILL BE ADDED.

WMO HEADING 		AWIPS ID		

TEXT PRODUCTS
FOPA40 KWNO		METPA0
FOUS44 KWNO		METNE1
FOUS45 KWNO		METSE1
FOUS46 KWNO		METNC1
FOUS47 KWNO		METSC1
FOUS48 KWNO		METRM1
FOUS49 KWNO		METWC1
FOAK47 KWNO		METAJK
FOAK48 KWNO		METAFC
FOAK49 KWNO		METAFG

BUFR PRODUCTS			
JSML10 KWNO					
JSML11 KWNO
JSML12 KWNO
JSML13 KWNO
JSML14 KWNO
JSML15 KWNO
JSML16 KWNO
JSML17 KWNO

A TECHNICAL PROCEDURES BULLETIN DESCRIBING THE ETA MOS TEXT 
PRODUCTS... INCLUDING A SAMPLE MESSAGE CONTAINING VISIBILTY AND 
OBSTRUCTION TO VISION GUIDANCE...IS AVAILABLE AT THE URL LISTED 
BELOW /USE LOWER CASE LETTERS/:

HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP/TPB/MDLTPB05-06.PDF

A WEB PAGE OUTLINING THE ETA-BASED BUFR PRODUCTS CAN BE FOUND 
ONLINE AT /USE LOWER CASE LETTERS/:

HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP/BUFR.HTML

IF YOU HAVE ANY QUESTIONS ABOUT THESE PRODUCTS OR THE MOS 
GUIDANCE... PLEASE CONTACT:

PAUL DALLAVALLE
METEOROLOGICAL DEVELOPMENT LABORATORY
SILVER SPRING MARYLAND
PHONE:  301-713-0023 EXT. 135
E-MAIL: PAUL.DALLAVALLE@NOAA.GOV

LINKS TO THE MOS PRODUCTS... ALONG WITH DESCRIPTIONS... CAN BE 
FOUND AT THE URL LISTED BELOW /USE LOWER CASE LETTERS/:

HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP/PRODUCTS.SHTML

THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE 
ON THE INTERNET AT THE URL LISTED BELOW /USE LOWER CASE LETTERS/:

HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM

$$
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