Fernanda had weakened to a tropical depression Friday evening, but has since regained some of its lost strength. Fernanda's sustained winds dropped to 35 mph, making it a tropical depression Friday evening but the only needed to strengthen back to 40 mph for it to be reclassified as a tropical storm. This minor uptick in wind overnight will not continue today, instead we believe that Fernanda will weaken this morning back down to a tropical depression before noon and then may rapidly deteriorate to a non-tropical low by tomorrow morning. Fernanda will likely pass north of the island chain early next week and while Fernanda won't likely impact the Hawaiian Islands directly, it will still pose the risk of higher surf and stronger rip currents, especially for the Big Island.
Elsewhere across the East Pacific Basin, Tropical Storm Greg is located west-southwest of the southern tip of Baja California. Greg is over warm ocean waters, but it will continue to struggle against moderate wind shear, keeping the system from much, if any, strengthening. Greg poses no threat to any landmass.
Tropical depression 9 is about 400 miles south of Puerto Angel, Mexico. Tropical Depression 9 will continue to move westward this morning before turning more toward the northwest late today. Additional strengthening is likely over the next few days, and Tropical Depression 9 may attain tropical storm strength today. Further strengthening is likely, with the storm possibly becoming a hurricane by Sunday. At this time, it appears as if Tropical Depression 9 will pose no direct threat to land, though rough surf and rip current issues can develop along the coast of southern Mexico.
An area of disturbed weather located between Tropical Storm Greg and Tropical Depression 9. Environmental conditions are favorable for development of this feature, and a new tropical depression could develop in the next day or two. This feature poses no threat to land.
By AccuWeather.com Senior Meteorologist Mike LeSeney
000 ABPZ20 KNHC 220506 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 1100 PM PDT Fri Jul 21 2017 For the eastern North Pacific...east of 140 degrees west longitude: The National Hurricane Center is issuing advisories on Tropical Storm Greg, located several hundred miles southwest of the southern tip of the Baja California peninsula, and on Tropical Depression Nine-E, located several hundred miles south of eastern Mexico. A low pressure system is centered about 500 miles south of the southern tip of the Baja California peninsula. Satellite data indicates that a low-level circulation exists, and only a small increase in the organization of associated shower and thunderstorm activity would result in the formation of a tropical depression. Environmental conditions are forecast to continue to be conducive for development for the next couple of days while the system moves westward to west-northwestward at around 10 mph. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. && Public Advisories on Tropical Depression Nine-E are issued under WMO header WTPZ34 KNHC and under AWIPS header MIATCPEP4. Forecast/Advisories on Nine-E are issued under WMO header WTPZ24 KNHC and under AWIPS header MIATCMEP4. $$ Forecaster Zelinsky
As Tropical Storm Fernanda churns closer to the Hawaiian Islands, heightened swells and rip currents could threaten bathers and boaters despite the storm weakening into Monday.
Large waves from former Hurricane Eugene will reach the coast of Southern California and threaten bathers and boaters on Thursday.
Despite escaping the worst of newly-formed Hurricane Dora, southern Mexico will still face locally flooding downpours and rough seas into Tuesday.
The third eastern Pacific tropical system of the year will threaten southern Mexico with flooding rainfall into the middle of the week.
When a hurricane crashes onto shore with destructive winds and deadly storm surge, its threat to clean water supply is a major concern.
While the powerful, destructive wind speeds of an approaching cyclone are used to estimate the storm's category, storm surge is often the greatest threat to both lives and property.
Following a very active 2016 hurricane season, an above-normal number of tropical storms and hurricanes are once again forecast in the East Pacific in 2017.