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NOUS41 KWBC 151459
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 09-36
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1056 AM EDT THU OCT 15 2009
TO: NATIONAL WEATHER SERVICE OFFICES
FEDERAL AVIATION ADMINISTRATION USERS
FAMILY OF SERVICES SUBSCRIBERS
OTHER USERS OF NWS AVIATION FORECASTS
FROM: CYNDIE ABELMAN
CHIEF AVIATION SERVICES BRANCH
SUBJECT: U.S. SIGMET TESTING DURING NOVEMBER 2009
DURING NOVEMBER 2009 NWS WILL TEST ITS SIGMET PRODUCTION AND
DISTRIBUTION PROCESS. THE TESTS SERVE AS AN IMPORTANT EXERCISE
FOR THE THREE U.S. METEOROLOGICAL WATCH OFFICES /MWO/ IN KANSAS
CITY...ANCHORAGE AND HONOLULU. THE TEST WILL INCLUDE ALL THREE
TYPES OF SIGMETS: VOLCANIC ASH /WV/ ...TROPICAL CYCLONE
/WC/ ...AND WEATHER PHENOMENA /WS/. THE VALIDITY PERIOD WILL BE
ONLY 10 MINUTES.
THE THREE MWOS WILL COORDINATE WITH THE TWO VOLCANIC ASH
ADVISORY CENTERS /VAAC/ IN ANCHORAGE AND WASHINGTON FOR THE
VOLCANIC ASH SIGMETS. THE TWO TROPICAL CYCLONE ADVISORY CENTERS
/TCAC/ IN MIAMI AND HONOLULU WILL COORDINATE FOR THE TROPICAL
CYCLONE SIGMETS.
THE TESTS ARE SCHEDULED FOR 0200 UTC ON THE FOLLOWING DATES:
NOVEMBER 10 2009: SIGMET TEST FOR TROPICAL CYCLONE /WC SIGMET/
IS SCHEDULED TO OCCUR AT 0200 UTC... WHEN THE MIAMI AND HONOLULU
TCACS ISSUE THE TRIGGERING TROPICAL CYCLONE TEST ADVISORIES.
THESE ADVISORIES THEN DRIVE THE ISSUANCE OF THE TROPICAL TEST
SIGMETS PRODUCED BY THE KANSAS CITY AND HONOLULU MWOS.
LOOK FOR THE FOLLOWING TWO WMO IDS DURING THIS TEST:
WCPN## KKCI
WCPA## PHFO
NOVEMBER 17 2009: SIGMET TEST FOR VOLCANIC ASH /WV SIGMET/ IS
THE SCHEDULED FOR 0200 UTC WHEN THE WASHINGTON AND ANCHORAGE
VAACS ISSUE THE TRIGGERING VOLCANIC ASH TEST ADVISORIES. THESE
ADVISORIES THEN DRIVE THE ISSUANCE OF THE VOLCANIC ASH TEST
SIGMETS PRODUCED BY THE KANSAS CITY ANCHORAGE AND HONOLULU MWOS.
LOOK FOR THE FOLLOWING THREE WMO IDS DURING THIS TEST:
WVAK## PAWU
WVPN## KKCI
WVPA## PHFO
NOVEMBER 24 2009: SIGMET TEST FOR WEATHER PHENOMENA /WS SIGMET/
IS SCHEDULED TO OCCUR AT 0200 UTC WHEN THREE UNITED STATES MWOS
ISSUE THEIR TEST SIGMETS.
LOOK FOR THE FOLLOWING THREE WMO IDS DURING THIS TEST:
WSAK## PAWU
WSPN## KKCI
WSPA## PHFO
IF ACTIVE SIGMETS ARE OCCURING AT THE PROPOSED DATE AND TEST
TIME...THE TEST WILL STILL BE COMPLETED.
IF YOU HAVE ANY QUESTIONS CONTACT:
MICHAEL GRAF
NATIONAL WEATHER SERVICE
SSMC-2 STATION 13314
1325 EAST-WEST HIGHWAY
SILVER SPRING MD 20910
301-713-1726 X 117
MICHAEL.GRAF@xxxxxxxx
NATIONAL SERVICE CHANGE NOTICES ARE ONLINE AT /USE LOWERCASE/:
HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM
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