Special Feature

Remnants Of Bertha is centered near 30.0N 96.0W at 24/0300 UTC or 30 nm WNW of Houston Texas, moving W at 12 kt. Estimated minimum central pressure is 1008 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Peak seas are 6 ft. Swells generated by the remnants of Bertha will continue to affect the Louisiana and Texas coast through tonight. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. This is the last public advisory issued by the National Hurricane Center on this system.

Please read the latest HIGH SEAS FORECAST issued by the National Hurricane Center at website - https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml and the latest Bertha NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details.

Tropical Waves

A tropical wave is over the Cabo Verde Islands along 24W, moving westward at 10 kt. Scattered moderate convection is confined to the monsoon from 08N to 13N between 18W and 26W.

A tropical wave is in the central Atlantic extending from 09N to 19N with axis near 47W, moving westward at 10 to 15 kt. Scattered moderate convection is from 07N to 18N between 37W and 52W.

A third tropical wave is east of the Lesser Antilles along 60W moving westward at approximately 15 kt. The wave is devoid of deep convection at this time.

Monsoon Trough/ITCZ

The monsoon trough enters the Atlantic through the coast of Senegal near Dakar and continues SW to 09N24W to 08N30W. The ITCZ extends from that point to 09N45W to 07N58W. Aside from the convection associated with the tropical waves, scattered moderate convection is noted from 06N to 13N between 26W and 35W.

Gulf Of America

Please refer to the Special Features section for details on the remnants of Bertha.

Tropical Storm Bertha has moved inland into Texas, weakened into a tropical depression, and is now dissipating. The remnants of Bertha are near 30.0N 96.0W at 11 PM EDT, moving west at 12 kt. Maximum sustained winds are 30 kt with gusts to 40 kt, and the minimum central pressure is 1008 mb.

Elsewhere outside of Bertha, a 1018 mb high developed over the NE Gulf, which is supporting light to gentle variable winds in that region and gentle to moderate E winds over the SE Gulf. The gradient of pressure between the remnants of Bertha and the high is supporting moderate to fresh SE winds over the NW basin and NE winds of the same speed over the Bay of Campeche. Seas basin-wide are mainly slight with locally moderate seas offshore Texas.

For the forecast, Bertha will dissipate Fri morning. In the wake of Bertha, a high pressure center will become established over the NE Gulf through Fri, then shift to the central Gulf. The high pressure will provide for a light to gentle wind flow across the basin, except for pulsing moderate to fresh winds off the Yucatan Peninsula and near NE Mexico and the Texas coast through the weekend.

Caribbean Sea

The presence of a surface trough north of the basin has reduced the usual north-south pressure gradient over the Caribbean Sea. As a result, fresh to strong winds are noted in the south-central Caribbean where seas are in the 5 to 8 ft range. Moderate to fresh trade winds and moderate seas are over the eastern Caribbean while gentle to moderate winds with slight seas prevail elsewhere. An upper level-low located near the Cayman Islands continue to support scattered showers over the NW basin and Windward Passage. In the SW Caribbean, the E Pacific extension of the monsoon support scattered heavy showers S of 15N.

For the forecast, the pressure gradient between the Atlantic ridge and the Colombian low will support fresh to strong winds with moderate to rough seas across the south-central Caribbean through the forecast period. Fresh to locally strong winds will pulse across the Gulf of Honduras Sat night and Sun night. Moderate or weaker winds with slight to moderate seas will prevail elsewhere.

Atlantic Ocean

Refer to the Tropical Waves section for more details on these features.

A trough extending from near 30N75W and across the central Bahamas continues to generate scattered showers over the offshores W of 58W to the N of 22N. High pressure dominates the remainder of the Atlantic forecast region. Fresh to strong northerly winds and rough seas to 10 ft prevail over the Canary Islands due to the pressure gradient between the Atlantic ridge and lower pressures over NW Africa. Moderate to locally fresh winds are noted elsewhere E of 65W with moderate seas.

For the forecast west of 55W, the aforementioned trough will continue to drift west to central and South Florida Fri. Scattered thunderstorms will accompany the trough. Fresh trade winds are expected offshore Hispaniola, including approaches to the Windward Passage into Sun. Moderate or weaker winds along with moderate seas are forecast elsewhere. Looking ahead, a cold front will approach the waters east of northern Florida Sat night through Sun night, preceded by fresh to locally strong southwest winds north of about 28N and east of 75W.

Posted 2 hours ago by NHC Forecaster Ramos