1. A life-threatening storm surge is expected along portions of thenorthern Gulf Coast by late today, with the highest inundationoccurring somewhere between the Mouth of the Pearl River and DauphinIsland, Alabama. Residents in the Storm Surge Warning area shouldfollow any advice given by local officials.

2. Hurricane conditions are expected this afternoon within portions of the Hurricane Warning area between Morgan City, Louisiana, and the Mississippi/Alabama border. Damaging winds, especially in gusts, will spread well inland across portions of southeast Mississippi and southern and central Alabama tonight due to Zeta's fast forward speed.

3. Through Thursday, heavy rainfall is expected from portions of the central U.S. Gulf Coast into the Tennessee Valley, Ohio Valley, Southern to Central Appalachians, and Mid-Atlantic States near and in advance of Zeta. This rainfall will lead to flash, urban, small stream, and minor river flooding.

CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Warning is in effect for...
- Mouth of the Atchafalaya River to Navarre Florida
- Lake Borgne, Lake Pontchartrain, Pensacola Bay and Mobile Bay

A Hurricane Warning is in effect for...
- Morgan City Louisiana to the Mississippi/Alabama border
- Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans

A Tropical Storm Warning is in effect for...
- Mississippi/Alabama border to Walton/Bay County Line Florida

A Storm Surge Warning means there is a danger of lifethreatening inundation, from rising water moving inland from the coastline in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a lifethreatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials.

A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. Preparations to protect life and property should be rushed to completion.

A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area.

For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office.

Key messages for Zeta can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT3.shtml.

STORM SURGE: Along the northern Gulf Coast, the combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide...

Mouth of the Pearl River to Dauphin Island AL...69 ft Port Fourchon LA to the Mouth of the Mississippi River...58 ft Mouth of the Mississippi River to the Mouth of the Pearl River including Lake Borgne...57 ft Mouth of the Atchafalaya River to Port Fourchon LA...46 ft Mobile Bay...46 ft Dauphin Island AL to AL/FL border...35 ft Lake Pontchartrain...35 ft AL/FL border to Navarre FL including Pensacola Bay...24 ft Intracoastal City LA to the Mouth of the Atchafalaya River including Vermilion Bay...13 ft Navarre FL to Yankeetown FL including Choctawhatchee Bay and Saint Andrew Bay...13 ft

The deepest water will occur along the immediate coast near and to the right of the landfall location, where the surge will be accompanied by large and dangerous waves. Surgerelated flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office.

WIND: Hurricane conditions are expected within the Hurricane Warning area on the northern Gulf Coast later this afternoon, with tropical storm conditions beginning within the next few hours. Tropical storm conditions are expected within the Tropical Storm Warning area on the northern Gulf Coast by late today.

Damaging winds, especially in gusts, will spread well inland across portions of southeastern Mississippi, Alabama, and northern Georgia this evening through early Thursday morning, and into the Carolinas and southeastern Virginia on Thursday. Wind gusts could be especially severe across the southern Appalachian Mountains on Thursday.

RAINFALL: Areas of heavy rainfall, both in advance of and along the track of Zeta, will impact areas from the central Gulf Coast to the MidMississippi and Ohio Valleys, and eastward into the southern to central Appalachians and MidAtlantic today through Thursday. Rainfall totals of 2 to 4 inches with isolated amounts of 6 inches are expected across these areas, resulting in flash, urban, small stream, and minor river flooding.

TORNADOES: A few tornadoes are expected this afternoon through tonight over southeastern parts of Louisiana and Mississippi, southern Alabama, and the western Panhandle of Florida.

At 100 PM CDT (1800 UTC), the center of Hurricane Zeta was located near latitude 27.9 North, longitude 91.1 West. Zeta is moving toward the northnortheast near 20 mph (35 km/h). A faster northnortheastward motion is expected through tonight followed by an even faster northeastward motion on Thursday and an eastnortheastward motion early Friday. On the forecast track, the center of Zeta will make landfall in southeastern Louisiana this afternoon. Zeta will then move close to the Mississippi coast this evening, and move across the southeastern and eastern United States on Thursday.

Maximum sustained winds have increased to near 100 mph (155 km/h) with higher gusts. Some additional strengthening is possible during the next few hours, and Zeta is expected to reach the northern Gulf Coast as a hurricane before weakening over the southeastern United States on Thursday.

Hurricaneforce winds extend outward up to 35 miles (55 km) from the center and tropicalstormforce winds extend outward up to 150 miles (240 km).

The minimum central pressure reported by an Air Force Hurricane Hunter aircraft is 975 mb (28.79 inches).

The satellite presentation of Zeta has improved significantly overnight with deep convection wrapping around an eye that at times as been fairly well defined. An Air Force Reserve Hurricane Hunter aircraft that has just began its reconnaissance mission into Zeta has reported a pressure that has fallen to 982 mb and a 25-30 n-mi-wide eye during it first pass through the center. It is somewhat surprising that the plane did not report stronger winds during its northeast eyewall pass given the improved satellite presentation, and using a blend of the aircraft data and recent objective and subjective satellite estimates yields and initial intensity of 75 kt. It is possible the winds have yet to catch up to the improved satellite appearance, but since Zeta will moving over warm waters and in a light wind shear environment this morning some additional strengthening is likely. Although cooler waters and increasing southwesterly upper-level winds over the northern Gulf of Mexico are likely to cause the cyclone's intensity to level-off or even come down slightly, Zeta is expected to reach the northern Gulf coast as significant hurricane by late this afternoon. The NHC intensity forecast is at the upper-end of the guidance, a little above the latest HWRF prediction. After landfall, Zeta will weaken while it moves over the southeastern United States, but the cyclone is forecast to become an extratropical gale-force low pressure area off the Mid-Atlantic coast Thursday night. The post-tropical cyclone should be absorbed by frontal boundary over the western Atlantic on Friday.

Zeta has turned north-northwestward and has begun to accelerate asanticipated. A vigorous upper-level low moving into west Texaswill cause Zeta to accelerate north-northeastward today, which willbring the center of the hurricane over southeastern Louisiana bylate this afternoon. The cyclone is expected to continue toaccelerate ahead of the trough over the southeastern United Statestonight and Thursday. The dynamical model are in very goodagreement and the latest NHC track is a blend of the various globalmodels. The new track forecast is very close the previous officialforecast.

Given Zeta's acceleration near landfall, strong winds are likelyto spread well inland along the northern Gulf coast this eveningand tonight.