NOUS41 KWBC 211450


Public Information Statement 16-26

National Weather Service Headquarters Washington DC

650 AM EDT Wed Jul 20 2016

To: Subscribers:

-NOAA Weather Wire Service

-Emergency Managers Weather Information Network


Other NWS Partners, Users and Employees

From: Eli Jacks

Chief, Forecast Services Division

Subject: Experimental Offshore Waters Forecasts for the

Northeast Pacific Ocean within 250 NM of Mexico,

Central America, Colombia, and Ecuador Effective

July 20, 2016

Effective Wednesday, July 20, 2016, at 830 am Pacific Daylight

Time (PDT) or 1530 Coordinated Universal Time (UTC), the

Tropical Analysis and Forecast Branch (TAFB) of the National

Hurricane Center is issuing, on an experimental basis, offshore

waters forecasts in the East Pacific within 250 NM of Mexico,

Central America, Colombia and Ecuador.

Currently the area is only covered by the Northeast Pacific High

Seas Forecast and Eastern Pacific Tropical Weather Discussion,

while Offshore Waters Forecasts are provided for the Gulf of

Mexico and Caribbean Sea on the opposite coast. The experimental

East Pacific Offshore Waters Forecast will derive the text from

the oceanic/national digital forecast database (NDFD) which

covers the same area.


Users who do not currently have the capability to download and

view the oceanic/national digital forecast database will be able

to access the text product instead. Ten (10) marine zones will

cover the area within 250 NM of the Pacific coast of Mexico,

with seven (7) marine zones covering the area within 250 NM of

the Pacific coast of Central America, Colombia and Ecuador.


Marine observations, local effects, and substantial user

feedback all indicate that the current forecast services

provided for this area do not adequately provide the level of

detail out to 5 days and do not address the local effects for

the marine community. These experimental products are intended

to improve the precision of marine warnings, forecasts and other

services by allowing forecasters to be more specific and

detailed while providing a forecast out to 5 days.


The experimental east Pacific offshore waters text products are

available at:


Table 1. Marine zones and corresponding UGCs for which

TAFB will issue experimental forecasts and warnings effective

July 20, 2016:

New Marine Zone Name New UGC

-------------------- --------

Synopsis for the E Pacific within 250 NM PMZ001

of Mexico

US Mexico Border S to 29N within 60 NM offshore PMZ009


S OF 29N to Punta Eugenia to 250 NM PMZ011


Punta Eugenia to Cabo San Lazaro to 250 NM PMZ013


Cabo San Lazaro to Cabo San Lucas to 250 NM PMZ015


Northern Gulf of California PMZ017

Central Gulf of California PMZ019

Southern Gulf of California PMZ021

Entrance to the Gulf of California including PMZ023

Cabo Corrientes

Mexico - States of Michoacan and Guerrero to PMZ025

250 NM offshore

Mexico States of Oaxaca and Chiapas including PMZ027

the Gulf of Tehuantepec

Synopsis for the E Pacific within 250 NM of PMZ101

Central America, Colombia, and Ecuador

Guatemala and El Salvador to 250 NM offshore PMZ111

El Salvador to Northern Costa Rica including the PMZ113

Gulfs of Fonseca and Papagayo

Northern Costa Rica to Western Panama to 250 NM PMZ115


Eastern Panama and Colombia including the PMZ117

Gulf of Panama

Ecuador including Gulf of Guayaquil to 250 NM PMZ119


Ecuador between 250 NM and 500 NM offshore PMZ121

Offshore Galapagos Islands PMZ123

TABLE 2. Table 2 lists the experimental offshore waters

forecasts issued by TAFB starting July 20, 2016:

Product Name WMO Heading AWIPS ID

------------ ----------- --------

Offshore Waters Forecast FZPN27 KNHC OFFPZ7

Offshore Waters Forecast FZPN28 KNHC OFFPZ8

Comments may be provided via the survey below:


The Experimental Feedback period will run from July 20, 2016,

through July 20, 2018. At the end of the comment period, the

product will be evaluated and a decision will be made to

transition to operational status, discontinue or extend the

experimental comment period for additional feedback.


If you have any questions or comments about the proposed TAFB

experimental East Pacific Offshore Waters marine zones please


Hugh D. Cobb Richard May

Chief, TAFB NWS Headquarters

National Hurricane Center Marine Services

11691 SW 17th Street 1325 East-West Highway

Miami, FL 33165-2149 Silver Spring, MD 20910

305-229-4454 301-427-9378

National Weather Service Change notices are posted at: