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Upcoming Changes to WSO PPG Zone...
On or about Thursday, March 2, 2023, at 700 AM Samoa Standard Time (SST), 1800 Coordinated Universal Time (UTC), the NWS Weather Service Office (WSO) in Pago Pago, American Samoa (PPG) will change Public, Fire, and Marine Forecast Zones on Tutuila and Aunuu, Manu'a, Swains Island, and Rose Island.
If March 2, 2023, is declared a Critical Weather Day, this implementation will be postponed to March 9, 2023.
The three current marine zones will be converted into seven new marine zones. Three new fire zones will be created for each public zone. A new public, fire, and marine zone will be created for Rose Island.
These changes are intended to provide increased flexibility and improved forecast accuracy to watch, warning, and advisory products in the Public, Fire, and Marine Weather Programs.
The zones to be changed are as follows:
Table 1: Universal Geographic Codes (UGC): Current Public / Marine Forecast Zone Name
Tutuila and Aunu'u:
Manu'a Island:
Swains Island:
Table 2: UGC: New Public / Fire / Marine Zone Forecast Name
Islands of Tutuila and Aunu'u:
Islands of Manu'a:
Swains Island:
Rose Island:
Table 5: NWS products affected by this public, fire, and marine forecast zone change.
AWIPS ID |
WMO Heading |
Product Name |
AFDPPG |
FXZS60 NSTU |
Area Forecast Discussion |
CFWPPG |
WHZS40 NSTU |
Coastal Flood Products |
CWFPPG |
FZZS50 NSTU |
Coastal Waters Forecast |
DGTPPG |
AXZS70 NSTU |
Drought Information Statement |
ESFPPG |
FGZS70 NSTU |
Hydrologic Outlook |
FLSPPG |
WGZS80 NSTU |
Flood Statement |
FFAPPG |
WGZS60 NSTU |
Flood Watch |
FFWPPG |
WGZS50 NSTU |
Flash Flood Warning |
HLSZS1 |
WTZS81 NSTU |
Hurricane Local Statement #1 |
HLSZS2 |
WTZS82 NSTU |
Hurricane Local Statement #2 |
HLSZS3 |
WTZS83 NSTU |
Hurricane Local Statement #3 |
HLSZS4 |
WTZS84 NSTU |
Hurricane Local Statement #4 |
HLSZS5 |
WTZS85 NSTU |
Hurricane Local Statement #5 |
MWSPPG |
FZZS70 NSTU |
Marine Weather Statement |
NPWPPG |
WWZS70 NSTU |
Non-Precipitation Watch/Warning/Advisory |
PNSPPG |
NOZS40 NSTU |
Public Information Statement |
SMWPPG |
WHZS50 NSTU |
Special Marine Warning |
SPSPPG |
WWZS80 NSTU |
Special Weather Statement |
SVRPPG |
WUZS50 NSTU |
Severe Thunderstorm Warning |
SVSPPG |
WWZS50 NSTU |
Severe Weather Statement |
TIBPPG |
WEZS42 PHEB |
Tsunami Information Statement |
TSUPPG |
WEZS40 PHEB |
Tsunami Message |
ZFPPPG |
FPZS50 NSTU |
Zone Forecast |
NWS partners and users should take the appropriate action to ensure systems recognize the new UGCs and zone names.
Updated zone shapefiles are online at:
For more information, please contact:
Elinor Lutu-McMoore
Meteorologist in Charge
P.O. Box 789
NWS Pago Pago, AS
elinor.lutu-mcmoore@noaa.gov
phone: 684-699-9130
National Service Change Notices are online at: