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PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 10-08
NATIONAL WEATHER SERVICE HEADQUARTERS
925 AM EST FRI JAN 29 2010
TO: NATIONAL WEATHER SERVICE /NWS/ OFFICES
FEDERAL AVIATION ADMINISTRATION USERS
FAMILY OF SERVICES SUBSCRIBERS
OTHER USERS OF NWS AVIATION FORECASTS
FROM: CYNTHIA ABELMAN
CHIEF... AVIATION SERVICES BRANCH
SUBJECT: 2010 COLLABORATIVE CONVECTIVE FORECAST PRODUCT
/CCFP/ CHANGES AND PRODUCTION SCHEDULE:
EFFECTIVE MARCH 01 2010
NOTE: THE FOLLOWING CHANGES HAVE NO IMPACT ON NOAA WEATHER
WIRE SUBSCRIBERS
START TIME FOR THE INITIAL 2010 CCFP IS 0300 EST ON MONDAY
MARCH 1 2010. FORECASTS WILL BE ISSUED EVERY 2 HOURS AND CONTAIN
A FORECAST VALID FOR 2...4 AND 6 HOURS. FORECASTS WILL COINCIDE
WITH THE ATCSCC STRATEGIC PLANNING TEAM TELCONS...ISSUED DAILY
BEGINNING AT 0300...AND CONCLUDING AT 2100 EASTERN TIME.
THE CONCLUDING FORECAST FOR THE 2010 CONVECTIVE SEASON WILL BE
MADE ON SATURDAY OCTOBER 30 2010 AT 1900 EDT.
CCFP PRODUCTION SYSTEM TESTING WILL OCCUR ON FEBRUARY 25 AND 26
2010 AT 0900...1100 AND 1300 EST. TESTING WILL INCLUDE
OPENING THE CHAT AND TRANSMISSION OF NULL ASCII CODED MESSAGES.
ECHO TOPS FORECASTS WILL INCREASE TO 4 CLASSES FROM THE CURRENT
3 CLASSES.
THE PROPOSED NEW TOPS FORECAST CLASSES DENOTED BY
25,000 - 29,000 FEET MSL 290
30,000 - 34,000 FEET MSL 340
35,000 - 39,000 FEET MSL 390
AT OR ABOVE 40,000 FEET MSL 400
-SPARSE COVERAGE SHALL BE DEFINED AS 25-39% /VERSUS 25-49%
CURRENTLY/.
-MEDIUM COVERAGE SHALL BE DEFINED AS 40-74% /VERSUS 50-74%
CURRENTLY/.
-HIGH COVERAGE OF 75-100% WILL REMAIN UNCHANGED.
LINES WILL BE DISPLAYED ALONE OR WITHIN AN AREA OF COVERAGE.
HIGH COVERAGE LINES WILL BE DISPLAYED AS A SOLID PURPLE LINE.
MEDIUM COVERAGE LINES WILL BE DISPLAYED AS A DASHED PURPLE LINE.
TEXT BOXES WILL BE ELIMINATED. THE INFORMATION FORMERLY
CONTAINED IN TEXT BOXES WILL BE INCORPORATED INTO THE CCFP
POLYGONS. THE CURRENT SYMBOLS FOR GROWTH RATES WILL BE REPLACED
BY AN UP ARROW FOR INCREASING AND A DOWN ARROW FOR DECREASING.
FAST POSITIVE GROWTH TREND WILL BE ELIMINATED. THESE SYMBOLS
WILL BE PLACED WITHIN THE INTERIOR OF EACH CCFP POLYGON. IF THE
FORECAST IS FOR /NO CHANGE/ THEN NO SYMBOL FOR THIS ATTRIBUTE
WILL BE PLACED IN THE POLYGON.
COVERAGE: CONVECTIVE COVERAGE SHALL BE REPRESENTED WITHIN THE
INTERIOR OF EACH POLYGON AS CURRENTLY PRESCRIBED EXCEPT FOR THE
INCLUSION OF MEDIUM COVERAGE LINES
THE CCFP IS AVAILABLE VIA THE NWS TELECOMMUNICATIONS GATEWAY
CIRCUIT IN AN ASCII CODED TEXT FORMAT UNDER THE FOLLOWING WMO
COMMUNICATIONS HEADERS.
FAUS27 KKCI
FAUS28 KKCI
FAUS29 KKCI
DETAILS ON CHANGES TO THE CODED ASCII TEXT PRODUCTS RESULTING
FROM THESE CHANGES TO CCFP CAN BE FOUND AT:
http://aviationweather.gov/products/ccfp/docs/pdd-ccfp.pdf
ADDITIONAL INFORMATION ON CCFP CAN BE FOUND AT:
http://aviationweather.gov/products/ccfp/
FOR QUESTIONS CONCERNING THE CCFP SCHEDULE OR TESTING...CONTACT:
FRED R. JOHNSON
CHIEF DOMESTIC OPERATIONS BRANCH
816-584-7204
NATIONAL TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT:
http://www.weather.gov/os/notif.htm
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