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NOUS44 KMOB 291348
PNSMOB
ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-300200-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
848 AM CDT WED APR 29 2026
TO: SUBSCRIBERS:
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS AND NWS EMPLOYEES
FROM: JAMIE RHOME, DEPUTY DIRECTOR
NATIONAL HURRICANE CENTER
SUBJECT: TROPICAL COLLABORATION TESTING APRIL 28 AND 29
(BACKUP DATE APRIL 30 AND MAY 19-21)
THE NWS NATIONAL HURRICANE CENTER (NHC) AND SELECT WEATHER FORECAST OFFICES (WFOS) IN THE NWS EASTERN, SOUTHERN, AND PACIFIC REGIONS WILL PERFORM INTERNAL TROPICAL COLLABORATION TESTING APRIL 28 AND 29, 2026. IF TESTING IS UNABLE TO BE CONDUCTED THESE DAYS, TESTING WILL INSTEAD BE CONDUCTED APRIL 30 OR MAY 19-21, 2026.
WFOS PARTICIPATING IN THE TEST INCLUDE THE FOLLOWING:
- CHARLESTON, SC (CHS)
- HONOLULU, HI (HFO)
- LAKE CHARLES, LA (LCH)
- MOBILE, AL (MOB)
- MOREHEAD CITY, NC (MHX)
- NEW ORLEANS, LA (LIX)
- WAKEFIELD, VA (AKQ)
- WILMINGTON, NC (ILM)
THIS INTERNAL TESTING WILL BEGIN DAILY AT APPROXIMATELY 1400 UTC AND TERMINATE AT 2000 UTC.
THE TESTING WILL INCLUDE THE EXCHANGE OF TROPICAL WATCHES AND WARNINGS BETWEEN NHC AND THE TESTING WFOS, GENERATION OF THE NATIONAL TROPICAL CYCLONE WATCH/WARNING (TCV) PRODUCT, GENERATION OF P-SURGE DATA, AND THE ADDITION OF TROPICAL CYCLONE INFORMATION INTO NATIONAL DIGITAL FORECAST DATABASE (NDFD) ELEMENTS.
INTERNAL TCV TEST PRODUCTS AND NDFD ELEMENTS ARE NOT INTENDED TO BE RELEASED EXTERNALLY THROUGH NWS DISSEMINATION AND COMMUNICATION SYSTEMS. ANY TCV PRODUCTS THAT ARE INADVERTENTLY RELEASED DURING THE TESTING PERIOD ARE SOLELY FOR TESTING PURPOSES AND DO NOT REPRESENT CURRENT OR FORECAST WEATHER CONDITIONS.
THE TEXT PRODUCT AFFECTED BY COLLABORATION TESTING IS THE NATIONAL TROPICAL CYCLONE WATCH/WARNING (TCV) PRODUCT ISSUED UNDER THE FOLLOWING AWIPS PRODUCT IDENTIFIERS (PIL) AND WORLD METEOROLOGICAL ORGANIZATION (WMO) IDENTIFIERS (ID):
TCV PRODUCT AWIPS PIL WMO ID
------------ --------- -------
ATLANTIC NATIONAL TCV TCVAT/1-5/ WTNT/81-85/ KNHC
NOTE: A NATIONAL TCV IS NOT ISSUED FOR THE CENTRAL PACIFIC/HFO.
THE NATIONAL TCV PRODUCT CONTAINS A SUMMARY OF COLLABORATED WIND AND/OR STORM SURGE WATCHES AND WARNINGS, DEPICTED BY NWS-DEFINED GEOGRAPHIC ZONES.
IN ADDITION, THE FOLLOWING NDFD ELEMENTS WILL BE CREATED FOR THIS TEST:
- TROPICAL CYCLONE WIND PROBABILITIES (INCREMENTAL AND
CUMULATIVE) FOR 34 KT, 50 KT, AND 64 KT
- HAZARD GRID (INCLUDING TROPICAL STORM, HURRICANE, AND
STORM SURGE HAZARDS)
- WIND AND WIND GUST GRIDS WITH TROPICAL CYCLONE STRENGTH
WINDS
P-SURGE GUIDANCE WILL BE RUN DURING THE TEST AND THE TEST DATA WILL BE AVAILABLE PUBLICLY AT THE FOLLOWING URL:
HTTPS://SLOSH.NWS.NOAA.GOV/PSURGE/
THE NWS WILL CONTINUE PERIODIC INTERNAL TROPICAL SOFTWARE TESTING DURING THE REMAINDER OF 2026.
FOR MORE INFORMATION, PLEASE CONTACT:
JESSICA CHACE
WARNING COORDINATION METEOROLOGIST
NATIONAL WEATHER SERVICE
OFFICE MOBILE, AL
JESSICA.CHACE@NOAA.GOV
NATIONAL PUBLIC INFORMATION STATEMENTS ARE ONLINE AT:
HTTPS://WWW.WEATHER.GOV/NOTIFICATION/
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