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740
NOUS41 KWBC 141711
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 04-24
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
110 PM EDT MON JUN 14 2004
TO: NATIONAL WEATHER SERVICE /NWS/ OFFICES
FEDERAL AVIATION ADMINISTRATION /FAA/
FAMILY OF SERVICES /FOS/ SUBSCRIBERS
OTHER CUSTOMERS OF NWS AVIATION FORECASTS
FROM: MARK ANDREWS
CHIEF...AVIATION SERVICES BRANCH
SUBJECT: MODIFICATION OF CURRENT ICING POTENTIAL AND FORECAST
ICING POTENTIAL PRODUCTS...EFFECTIVE JULY 13 2004
NOTE - THE FOLLOWING CHANGES HAVE NO IMPACT ON NOAA WEATHER WIRE
SERVICE SUBSCRIBERS
EFFECTIVE JULY 13 2004 AT 1300 COORDINATED UNIVERSAL TIME
/UTC/...THE NATIONAL WEATHER SERVICE /NWS/ AVIATION WEATHER
CENTER /AWC/ IN KANSAS CITY. . .MISSOURI WILL IMPLEMENT UPDATED
INTEREST MAPS TO THE CURRENT ICING POTENTIAL /CIP/ AND THE
FORECAST ICING POTENTIAL /FIP/ PRODUCTS.
THE CIP DOMAIN COVERS THE CONTIGUOUS 48 UNITED STATES AND
ADJACENT COASTAL WATERS IN ONE THOUSAND FOOT INCREMENTS BETWEEN
ONE THOUSAND AND THIRTY THOUSAND FEET ABOVE MEAN SEA LEVEL. THE
CIP IS A DIAGNOSTIC ICING PRODUCT WHICH DEPICTS THE TOTAL ICING
POTENTIAL AND SUPERCOOLED LIQUID DROPLETS /SLD/. THE CIP IS
PRODUCED AUTOMATICALLY USING SATELLITE...RADAR....SURFACE...
PIREP...AND 40 KM RAPID UPDATE CYCLE /RUC/ MODEL AS INGEST.
THE CIP HAS BEEN AVAILABLE AS AN OPERATIONAL PRODUCT SINCE MARCH
2002.
THE FIP DOMAIN COVERS THE CONTIGUOUS 48 UNITED STATES AND
ADJACENT COASTAL WATERS IN ONE THOUSAND FOOT INCREMENTS BETWEEN
ONE THOUSAND AND THIRTY THOUSAND FEET ABOVE MEAN SEA LEVEL. THE
FIP IS A FORECAST EXTENSION OF THE CURRENT ICING POTENTIAL /CIP/
PRODUCT AND PREDICTS THE TOTAL ICING POTENTIAL OUT TO 12 HOURS.
FORECAST HOURS INCLUDE H+01...H+02...H+03...H+06...H+09 AND H+12.
THE FIP IS PRODUCED AUTOMATICALLY FROM THE 20 KM RAPID UPDATE
CYCLE /RUC/ MODEL RUNS.
THE FIP HAS BEEN AVAILABLE AS AN OPERATIONAL PRODUCT SINCE
JANUARY 2004.
THE RELATIVE HUMIDITY AND TEMPERATURE MEMBERSHIP FUNCTIONS IN THE
OPERATIONAL CIP AND FIP WILL BE UPDATED.
THE RELATIVE HUMIDITY MEMBERSHIP FUNCTION WILL DECREASE ICING
VOLUMES AND AREAS FOR THE HIGHEST THRESHOLDS...BUT WILL BE ONLY
SLIGHTLY LOWER FOR THE VERY LOWEST THRESHOLD.
THE TEMPERATURE MEMBERSHIP FUNCTION WILL MAKE THE CIP AND FIP
MORE ROBUST...DECREASING THE WARNED AIRSPACE IN CLASSICAL
FREEZING RAIN SITUATIONS.
MORE INFORMATION ABOUT THE CIP AND FIP PRODUCTS CAN BE OBTAINED
AT /USE LOWER CASES LETTERS/:
HTTP://ADDS.AVIATIONWEATHER.GOV/ICING/DESCRIPTION.PHP
THE CURRENT PRODUCT DESCRIPTION DOCUMENTS FOR THE CIP AND FIP ARE
AVAILABLE AT /USE LOWER CASES LETTERS/:
HTTP://PRODUCTS.WEATHER.GOV/
TABLE 1: CIP TOTAL ICING HEADERS:
FLIGHT CIP TOTAL ICING
LEVEL WMO HEADING(S)
----- ---------------
010 YAWA93 KKCI
020 YAWA95 KKCI
030 YAWA90 KKCI
040 YAWA84 KKCI
050 YAWA85 KKCI
060 YAWA81 KKCI
070 YAWA78 KKCI
080 YAWA75 KKCI
090 YAWA73 KKCI
100 YAWA70 KKCI
110 YAWA67 KKCI
120 YAWA65 KKCI
130 YAWA62 KKCI
140 YAWA60 KKCI
150 YAWA57 KKCI
160 YAWA55 KKCI
170 YAWA53 KKCI
180 YAWA50 KKCI
190 YAWA48 KKCI
200 YAWA46 KKCI
210 YAWA45 KKCI
220 YAWA43 KKCI
230 YAWA41 KKCI
240 YAWA39 KKCI
250 YAWA38 KKCI
260 YAWA36 KKCI
270 YAWA34 KKCI
280 YAWA33 KKCI
290 YAWA32 KKCI
300 YAWA30 KKCI
TABLE 2: CIP SUPERCOOLED LIQUID DROPLET /SLD/ HEADERS:
FLIGHT CIP SLD
LEVEL WMO HEADING(S)
----- ---------------
010 YAXA93 KKCI
020 YAXA95 KKCI
030 YAXA90 KKCI
040 YAXA84 KKCI
050 YAXA85 KKCI
060 YAXA81 KKCI
070 YAXA78 KKCI
080 YAXA75 KKCI
090 YAXA73 KKCI
100 YAXA70 KKCI
110 YAXA67 KKCI
120 YAXA65 KKCI
130 YAXA62 KKCI
140 YAXA60 KKCI
150 YAXA57 KKCI
160 YAXA55 KKCI
170 YAXA53 KKCI
180 YAXA50 KKCI
190 YAXA48 KKCI
200 YAXA46 KKCI
210 YAXA45 KKCI
220 YAXA43 KKCI
230 YAXA41 KKCI
240 YAXA39 KKCI
250 YAXA38 KKCI
260 YAXA36 KKCI
270 YAXA34 KKCI
280 YAXA33 KKCI
290 YAXA32 KKCI
300 YAXA30 KKCI
TABLE 3: FIP TOTAL ICING HEADERS:
FLIGHT FIP TOTAL ICING
LEVEL WMO HEADING(S)
----- ---------------
010 YAW*93 KKCI
020 YAW*95 KKCI
030 YAW*90 KKCI
040 YAW*84 KKCI
050 YAW*85 KKCI
060 YAW*81 KKCI
070 YAW*78 KKCI
080 YAW*75 KKCI
090 YAW*73 KKCI
100 YAW*70 KKCI
110 YAW*67 KKCI
120 YAW*65 KKCI
130 YAW*62 KKCI
140 YAW*60 KKCI
150 YAW*57 KKCI
160 YAW*55 KKCI
170 YAW*53 KKCI
180 YAW*50 KKCI
190 YAW*48 KKCI
200 YAW*46 KKCI
210 YAW*45 KKCI
220 YAW*43 KKCI
230 YAW*41 KKCI
240 YAW*39 KKCI
250 YAW*38 KKCI
260 YAW*36 KKCI
270 YAW*34 KKCI
280 YAW*33 KKCI
291 YAW*32 KKCI
300 YAW*30 KKCI
WHERE * = B= 01 HOUR FORECAST
* = C= 02 HOUR FORECAST
* = D= 03 HOUR FORECAST
* = G= 06 HOUR FORECAST
* = J= 09 HOUR FORECAST
* = M= 12 HOUR FORECAST
ON JULY 13 2004 THE CIP AND FIP PRODUCTS WILL CONTINUE TO BE
AVAILABLE IN GRIB FORMAT THROUGH:
1. THE SATELLITE BROADCAST NETWORK /SBN/ NOAAPORT CHANNEL
2. NATIONAL WEATHER SERVICE FTP SERVERS AT /USE LOWER CASES
LETTERS EXCEPT AS NOTED BELOW/:
FTP://TGFTP.NWS.NOAA.GOV/SL.US008001/DC.AVSPT/
NOTE: THE SL AND DC IN THE ABOVE INTERNET ADDRESS MUST BE IN
CAPITAL LETTERS.
3. THE FAMILY OF SERVICES /FOS/ HIGH RESOLUTION DATA SERVICE AND
SERVER ACCESS SERVICE.
ADDITIONAL INFORMATION ON NWS AVIATION PRODUCT DISSEMINATION IS
AVAILABLE AT /USE LOWER CASES LETTERS/...
HTTP://WEATHER.GOV/OM/DISEMSYS.SHTML
IF YOU HAVE ANY QUESTIONS REGARDING THESE PRODUCTS...CONTACT:
CLINTON WALLACE
CHIEF, AVIATION SUPPORT BRANCH - AVIATION WEATHER CENTER
7220 NW 101ST TERRACE
ROOM 101
KANSAS CITY MO 64153
PHONE: 816-584-72048
E-MAIL: CLINTON.WALLACE@xxxxxxxx
THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE
ONLINE AT /USE LOWER CASE LETTERS/...
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
$$
NNNN
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