498
NOUS41 KWBC 101432
PNSWSH
PUBLIC INFORMATION STATEMENT...SERVICE CHANGE NOTICE 00-70
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1040 AM EDT MON JUL 10 2000
TO FAMILY OF SERVICES/FOS/SUBSCRIBERS...NOAA WEATHER WIRE
SERVICE/NWWS/SUBSCRIBERS...OTHER NATIONAL WEATHER
SERVICE/NWS/CUSTOMERS...NWS EMPLOYEES
FROM THERESE PIERCE...CHIEF...HYDROMETEOROLOGICAL SERVICES
SUBJECT EXPANDED CODED CITIES FORECAST AND DIGITAL FORECAST
PRODUCTS FROM BALTIMORE/WASHINGTON D.C ...EFFECTIVE SEPTEMBER 1 2000
ON FRIDAY SEPTEMBER 1 2000...AT 400 AM EDT... THE NATIONAL WEATHER SERVICE IN
BALTIMORE/WASHINGTON WILL OFFICIALLY BEGIN ISSUING AN EXPANDED VERSION OF THE
CODED CITIES FORECAST AND A NEW EXPERIMENTAL PRODUCT CALLED THE DIGITAL ZONE
FORECAST. THE DIGITAL FORMAT OF THESE PRODUCTS WILL FACILITATE THEIR USE WITH
COMPUTERS.
THE EXPANDED CODED CITIES FORECAST WILL BE SIMILAR TO THE EXISTING PRODUCT
FOR DAYS 1 AND 2...BUT WILL INCLUDE FORECASTS OUT TO FIVE DAYS. THE WMO HEADER
WILL BE CONTINUE TO BE FPUS41 KWBC. THE NWWS HEADER WBCCCFWBC WILL ALSO
REMAIN UNCHANGED. CUSTOMERS WILL NOT NEED TO MAKE ANY COMMUNICATION CHANGES
TO CONTINUE RECEIVING THIS PRODUCT.
THE FOLLOWING IS AN EXAMPLE OF THE EXPANDED CODED CITIES FORECAST...
FPUS41 KLWX 052000
CCFWBC
BWI TA 055/074 038/059 038 25375 0000/0000/0000
ABB 073/048 074/050 070 0000000
DCA TA 055/074 038/059 038 25375 0000/0000/0000
ABB 073/048 074/050 070 0000000
MRB TA 055/074 038/059 038 25375 0000/0000/0000
ABB 073/048 074/050 070 0000000
HGR TA 055/074 038/059 038 25375 0000/0000/0000
ABB 073/048 074/050 070 0000000
NHK TA 055/074 038/059 038 25375 0000/0000/0000
ABB 073/048 074/050 070 0000000
CHO TA 055/074 038/059 038 25375 0000/0000/0000
ABB 073/048 074/050 070 0000000
IAD TA 055/074 038/059 038 25375 0000/0000/0000
ABB 073/048 074/050 070 0000000
THE THIRD LINE IS IDENTICAL TO THE OLD CODED CITIES FORECAST...
EXCEPT FOR THE ADDITION OF THREE...FOUR-DIGIT GROUPS...EACH SEPARATED
BY A SLANT SYMBOL. EACH FOUR DIGIT GROUP REPRESENTS A SNOWFALL RANGE
FOR THE FIRST...SECOND AND THIRD PERIODS RESPECTIVELY. SO FOR EXAMPLE...
A CODE OF 0001/0306/0204 REPRESENTS A FORECAST OF 0-1 INCHES OF SNOW
IN THE FIRST 12 HOURS...3-6 INCHES IN THE SECOND 12 HOUR PERIOD AND
2-4 INCHES IN THE THIRD 12 HOUR PERIOD. ON THE FOURTH LINE...ABB IS AN
EXAMPLE OF A STRING OF THREE ONE-LETTER WEATHER FORECASTS FOR DAYS 3...4...AND
5...FOLLOWED BY THE TEMPERATURE FORECAST FOR THE LAST FIVE PERIODS. THE STRING
OF ZEROES AT THE END OF THE LINE WILL EVENTUALLY BE REPLACED WITH
PRECIPITATION PROBABILITIES FOR SEVEN PERIODS.
THE DIGITAL ZONE FORECAST IS A PRODUCT WHICH DISPLAYS FORECASTED WEATHER
PARAMETERS IN 3-HOUR INTERVALS. THIS PROVIDES A MORE DETAILED FORECAST
AND ALSO MAKES IT EASIER FOR THE USER TO OBTAIN THE WEATHER PARAMETER/S/
OF CHOICE. IT IS ESSENTIALLY A DIGITAL DISPLAY OF THE ZONE FORECAST IN
MUCH GREATER DETAIL AND WITH FORECAST PROJECTIONS OUT TO 5 DAYS. THE
NARRATIVE VERSION OF THE ZONE FORECAST WILL STILL BE AVAILABLE. THE WMO
HEADER AND NWWS HEADER WILL BE FOUS51 KLWX AND WBCRDFLWX...RESPECTIVELY.
THE FOLLOWING IS AN EXAMPLE OF THE DIGITAL ZONE FORECAST...
FOUS51 KLWX 101600
RDFLWX
DIGITAL ZONE FORECAST
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
1236 PM EDT MON APR 10 2000
MDZ002-WVZ048>049-090300-
ALLEGANY MD-GRANT-MINERAL
1236 PM EDT MON APR 10 2000
TUE 04/11/00 WED 04/12/00
EDT 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
POP 12HR 0 0 0 10 20
QPF 12HR 0 0 0 0
MAX QPF 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
MN/MX 49 77 54 75 53
TEMP 71 73 69 60 55 52 52 61 71 75 72 64 60 57 61 67 75 72
DEWPT 36 36 39 42 44 45 46 48 49 48 49 51 52 52 55 57 57 57
RH 28 26 33 51 66 77 80 62 46 38 44 63 75 83 81 70 54 59
WIND DIR S S S S S S S S S S S S S S S S S S
WIND SPD 8 10 5 5 2 2 2 10 12 12 8 5 5 2 2 10 12 12 8 8 8 8
CLOUDS CL CL SC SC BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK
THU 04/13/00FRI 04/14/00SAT 04/15/00
EDT 09 15 21 03 09 15 21 03 09 15 21 03 09
POP 12HR 40 40 40 40 30 30
MN/MX 72 56 77 57 77 57
CLOUDS BK BK BK BK BK BK
RAIN SHWRS C C C C C C
TSTMS C C C C S S
$$
THE NATIONAL WEATHER SERVICE IN CHARLESTON WV IS ALREADY USING THE
DIGITAL ZONE FORECAST. FURTHER DETAILS ON HOW TO INTERPRET THIS
PRODUCT CAN BE FOUND ON THEIR INTERNET WEB SITE AT /LOWER CASE/
WWW.NWS.NOAA.GOV/ER/RLX/PRODEX/RDFEXPLANATION.HTML/.
IF YOU HAVE QUESTIONS OR COMMENTS ABOUT THESE PRODUCTS...PLEASE
CALL 703-260-0107 FOR BARBARA WATSON...EXT 223 OR JAMES TRAVERS...EXT 222.
THIS NOTICE AND OTHER SERVICE CHANGE NOTICES ARE ON THE INTERNET AT
/ALL LOWER CASE/ WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
END
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