000 ABPZ20 KNHC 151137 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 AM PDT Mon May 15 2017 For the eastern North Pacific...east of 140 degrees west longitude: Tropical cyclone formation is not expected during the next 5 days. Today marks the first day of the eastern North Pacific hurricane season, which will run until November 30. Long-term averages for the number of named storms, hurricanes, and major hurricanes are 15, 8, and 4, respectively. The list of names for 2017 is as follows: Name Pronunciation Name Pronunciation ------------------------------------------------------------- Adrian AY-dree-uhn Max maks Beatriz BEE-a-triz Norma NOOR-muh Calvin KAL-vin Otis OH-tis Dora DOR-ruh Pilar Pee-LAHR Eugene YOU-jeen Ramon rah-MOHN Fernanda fer-NAN-dah Selma SELL-mah Greg greg Todd tahd Hilary HIH-luh-ree Veronica vur-RAHN-ih-kuh Irwin UR-win Wiley WY-lee Jova HO-vah Xina ZEE-nah Kenneth KEH-neth York york Lidia LIH-dyah Zelda ZEL-dah One tropical cyclone, Tropical Storm Adrian, already formed earlier this month. The next named storm that forms this season will be named Beatriz. This product, the Tropical Weather Outlook, briefly describes significant areas of disturbed weather and their potential for tropical cyclone formation during the next five days. The issuance times of this product are 5 AM, 11 AM, 5 PM, and 11 PM PDT. After the change to standard time in November, the issuance times are 4 AM, 10 AM, 4 PM, and 10 PM PST. A Special Tropical Weather Outlook will be issued to provide updates, as necessary, in between the regularly scheduled issuances of the Tropical Weather Outlook. Special Tropical Weather Outlooks will be issued under the same WMO and AWIPS headers as the regular Tropical Weather Outlooks. A standard package of products, consisting of the tropical cyclone public advisory, the forecast/advisory, the cyclone discussion, and a wind speed probability product, is issued every six hours for all ongoing tropical cyclones. In addition, a special advisory package may be issued at any time to advise of significant unexpected changes or to modify watches or warnings. Beginning this season, the National Hurricane Center (NHC) will have the option to issue advisories, watches, and warnings for disturbances that are not yet a tropical cyclone, but which pose the threat of bringing tropical storm or hurricane conditions to land areas within 48 hours. For these land-threatening "potential tropical cyclones", NHC will issue the full suite of advisory and watch/warning products that previously had been issued only for tropical cyclones. Potential tropical cyclones will share the naming conventions currently in place for tropical depressions, being numbered from a single list (e.g., "One-E", "Two-E", "Three-E", etc.). The Tropical Cyclone Update is a brief statement to inform of significant changes in a tropical cyclone, to post or cancel watches or warnings, or to provide hourly position updates between intermediate advisories when the storm center is easily followed by radar. The Tropical Cyclone Update is also used in lieu of or to precede the issuance of a special advisory package. Tropical Cyclone Updates, which can be issued at any time, can be found under WMO header WTPZ61-65 KNHC, and under AWIPS header MIATCUEP1-5. All NHC text and graphical products are available on the web at http://www.hurricanes.gov. More information on NHC text products can be found at http://www.hurricanes.govaboutnhcprod.shtml, while more information about NHC graphical products can be found at http://www.hurricanes.gov/aboutnhcgraphics.shtml. You can also interact with NHC on Facebook at https://www.facebook.com/NWSNHC. Notifications are available via Twitter when select NHC products are issued. Information about our east Pacific Twitter feed is available at http://www.hurricanes.gov/twitter.shtml. $$ Forecaster Brown