Hurricane Zeta hit New Orleans, Louisiana and the coast of Mississippi on Wednesday evening. At 11:00 p.m. EDT on Wednesday the center of Hurricane Zeta was located at latitude 31.5°N and longitude 88.7°W which put it about 45 miles (75 km) northeast of Hattiesburg, Mississippi. Zeta was moving toward the northeast at 31 m.p.h. (50 km/h). The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 100 m.p.h. (160 km/h). The minimum surface pressure was 978 mb.
A Hurricane Warning remained in effect for the portion of the coast from the Mouth of the Pearl River to the Mississippi/Alabama border. A Tropical Storm Warning was in effect for the portion of the coast from the Mississippi/Alabama border to the Walton/Bay County Line in Florida.
Hurricane Zeta made landfall on the coast of Louisiana near Grand Isle late on Wednesday afternoon. The eye of Zeta passed over New Orleans before moving northeast into southern Mississippi. The strongest winds in Hurricane Zeta occurred in the eastern half of the circulation. A NOAA National Ocean Service (NOS) station at Shell Beach Louisiana (SHBL1) reported a sustained wind speed of 80 m.p.h. (130 km/h) and a wind gust of 101 m.p.h. (163 km/h). A NOAA NOS station at the Bay Waveland Yacht Club, Mississippi (WYCM6) reported a wind speed of 80 m.p.h. (130 km/h) and a wind gust of 103 m.p.h. (167 km/h). The National Weather Service (NWS) office at the airport in New Orleans (KMSY) reported a Peak Wind of 71 m.p.h. (115 km/h). A station in Biloxi, Mississippi (KBIX) reported a sustained wind speed of 64 m.p.h. (104 km/h) and a wind gust of 87 m.p.h. (141 km/h). A station in Mobile, Alabama (KMOB) reported a sustained wind speed of 48 m.p.h. (78 km/h) and a wind gust of 91 m.p.h. (146 km/h).
There were reports of significant storm surges along the coast of Mississippi. There were also reports of widespread power outages in southeastern Louisiana and southern Mississippi.
Hurricane Zeta will move rapidly northeastward across Alabama during the night. The center of Zeta will be over northwestern Georgia by Thursday morning. Hurricane Zeta will weaken to a tropical storm during the night, but it will be capable of causing additional power outages. Zeta will also drop locally heavy rain. Flash Flood Watches were in effect for the area from Alabama to western Virginia. Zeta will eventually merge with a cold front and make a transition to an extratropical cyclone. The extratropical cyclone could contribute to snow that will fall over the northeastern U.S.
Tropical Storm Cristobal caused a storm surge on the Gulf Coast on Sunday. At 11:00 p.m. EDT on Sunday the center of Tropical Storm Cristobal was located at latitude 30.3°N and longitude 90.2°W which put it about 20 miles (30 km) north-northwest of New Orleans, Louisiana. Cristobal was moving toward the north-northwest at 10 m.p.h. (16 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 993 mb.
A Tropical Storm Warning remained in effect for the portion of the coast from Morgan City, Louisiana to the Okaloosa/Walton County Line in Florida.
The large circulation around Tropical Storm Cristobal blew water toward the northern coast of the Gulf of Mexico on Sunday. The wind produced a rise in the water level from northwest Florida to southeast Louisiana. The highest storm surges occurred along the coast of Mississippi and southeast Louisiana. The water level reached 7.47 feet (2.28 m) at the Waveland Yacht Club in Mississippi. The storm surge was 7.62 feet (2.32 m) at Shell Beach in Louisiana. The storm surge covered coastal roads in Grand Isle, Louisiana and Biloxi, Mississippi.
The broad center of Tropical Storm Cristobal passed across the Lower Mississippi River delta on Sunday afternoon before it moved over New Orleans. Cristobal began to weaken slowly as it moved inland. Winds to tropical storm force were still occurring in the southeastern part of the circulation which was still over the Gulf of Mexico. Most of the rain was falling in bands on the northern side of Tropical Storm Cristobal. Locally heavy rain fell over Northwest Florida, Southwest Alabama, Southern Mississippi and Southeastern Louisiana.
Tropical Storm Cristobal will move around the western end of a subtropical high pressure system over the western Atlantic Ocean. The high will steer Cristobal toward the north during the next several days. On its anticipated track Tropical Storm Cristobal will move over Louisiana and Arkansas on Monday. Cristobal will continue to weaken slowly as it moves farther inland. Tropical Storm Cristobal will drop locally heavy rain over parts of Mississippi, eastern Louisiana, Arkansas and Missouri. Flood Watches have been issued for some of those areas.
Tropical Storm Gordon moved closer to the Gulf Coast of the U.S. on Tuesday morning. At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Gordon was located at latitude 28.5°N and longitude 86.8°W which put it about 145 miles (235 km) east-southeast of the mouth of the Mississippi River. Gordon was moving toward the northwest at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 1001 mb.
A Hurricane Warning was in effect for the portion of the coast from the mouth of the Pearl River to the Alabama-Florida border. Tropical Storm Warnings were in effect for the portions of the coast from Grand Isle, Louisiana to the mouth of the Pearl River including Lake Pontchartrain and from the Alabama-Florida border to the Okaloosa-Walton County line in Florida.
The circulation of Tropical Storm Gordon appeared to be getting more organized on Tuesday morning. More thunderstorms developed near the center of circulation. Storms near the center were generating upper level divergence which was pumping mass away to the east of the tropical storm. Several bands of showers and thunderstorms north and east of the center were moving toward the Gulf Coast. The bands southwest of the center consisted primarily of showers and lower clouds. Winds to tropical storm force extended out about 80 miles (130 km) from the center of circulation, but the winds were weaker in the southwestern quadrant of Tropical Storm Gordon.
Tropical Storm Gordon could strengthen into a hurricane before it makes landfall. Gordon will move over water where the Sea Surface Temperature is near 30°C. An upper level trough over the southeastern U.S. was producing southwesterly winds which were blowing toward the top of the circulation. Those winds were causing some vertical shear, but they will not be strong enough to prevent intensification. The surface pressure decreased slightly on Tuesday morning. Increased friction near the coast could cause the circulation to tighten around the center, when Tropical Storm Gordon gets closer to the Gulf Coast.
Tropical Storm Gordon will move around the southwestern end of a subtropical high pressure system over the western Atlantic Ocean. The high will steer Gordon in a general northwesterly direction during the next several days. On its anticipated track the center of Hurricane Gordon is likely to make landfall on the northern Gulf Coast on Tuesday night. Gordon will produce winds to near hurricane force at the coast. It could cause a storm surge of 5 to 8 feet (1.5 to 2.5 meters) east of the center where the wind blows water toward the coast. The highest storm surge will occur in bays and the mouths of streams and rivers where the shape of the coast funnels water into those areas. Tropical Storm Gordon will also drop heavy rain over portions of northwest Florida, southwest Alabama, Mississippi and eastern Louisiana. Locally heavy rain could create the potential for flash floods.
Elsewhere over the Atlantic Ocean, former Tropical Storm Florence strengthened into the third Atlantic hurricane of 2018. At 11:00 a.m. EDT on Tuesday the center of Hurricane Florence was located at latitude 19.7°N and longitude 42.5°W which put it about 1270 miles (2045 km) east-northeast of the Lesser Antilles. Florence was moving toward the west-northwest at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h). The minimum surface pressure was 990 mb.