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Tropical Storm Harvey Advisory Number 41
NWS National Hurricane Center Miami FL AL092017
1000 AM CDT Wed Aug 30 2017
...CENTER OF HARVEY MOVING FARTHER INLAND OVER SOUTHWESTERN
...FLOODING RAINS CONTINUING OVER EXTREME SOUTHEASTERN TEXAS AND
SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION
ABOUT 30 MI...45 KM NNW OF LAKE CHARLES LOUISIANA
ABOUT 75 MI...115 KM SW OF ALEXANDRIA LOUISIANA
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NNE OR 20 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
The Storm Surge Watch is discontinued west of Sabine Pass, Texas.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Warning is in effect for...
* Holly Beach Louisiana to Morgan City Louisiana
A Storm Surge Watch is in effect for...
* Sabine Pass Texas to west of Holly Beach Louisiana
A Tropical Storm Warning is in effect for...
* East of High Island Texas to Grand Isle Louisiana
Catastrophic and life-threatening flooding continues in southeastern
Texas and portions of southwestern Louisiana. Please see warnings
and other products issued by your local National Weather Service
office for additional information on this life-threatening
A Storm Surge Warning means there is a danger of life-threatening
inundation, from rising water moving inland from the coastline,
during the next 12 hours 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 life-threatening 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.
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.
DISCUSSION AND 48-HOUR OUTLOOK
At 1000 AM CDT (1500 UTC), the center of Tropical Storm Harvey was
located near latitude 30.5 North, longitude 93.3 West. Harvey is
moving toward the north-northeast near 8 mph (13 km/h) and this
general motion is expected to continue through Thursday. A turn
toward the northeast is expected Thursday night and Friday. On the
forecast track, the center of Harvey should move through
southwestern and central Louisiana today and tonight, then move
through northeastern Louisiana and northwestern Mississippi Thursday
and Thursday night.
Maximum sustained winds are near 45 mph (75 km/h) with higher gusts.
Weakening is forecast during the next 48 hours as Harvey moves
farther inland, and the cyclone is expected to weaken to a tropical
Tropical-storm-force winds extend outward up to 80 miles (130 km)
mainly to the south of the center. During the past few hours,
there have been reports of wind gusts of 40-50 mph (65-80 km/h) in
southwestern Louisiana and southeastern Texas near Lake Charles,
Cameron, and Sabine Pass.
The minimum central pressure based on surface observations is
993 mb (29.33 inches).
HAZARDS AFFECTING LAND
RAINFALL: Harvey is expected to produce additional rainfall
accumulations of 3 to 6 inches from southwestern Louisiana and the
adjacent border of eastern Texas northeastward into western
Tennessee and Kentucky through Friday with isolated amounts up to 10
inches. The threat of heavy rains has ended in the Houston/
Galveston area. However catastrophic and life threatening flooding
will continue in and around Houston, Beaumont/Port Arthur, eastward
into southwest Louisiana for the rest of the week. The expected
heavy rains spreading northeastward from Louisiana into western
Kentucky may also lead to flash flooding and increased river, small
stream flooding. DO NOT ATTEMPT TO TRAVEL IN THE AFFECTED AREA IF
YOU ARE IN A SAFE PLACE. DO NOT DRIVE INTO FLOODED ROADWAYS. Please
see warnings and products issued by your local National Weather
Service office for additional information on this life-threatening
Elsewhere, the outer bands of Harvey are expected to produce
additional rainfall amounts of 3 to 6 inches over portions of the
central and eastern Gulf States and 2 to 4 inches farther north into
parts of the Tennessee Valley, Ohio Valley and southern Mid Atlantic
through Saturday. These rains may lead to flooding concerns across
A list of preliminary rainfall observations compiled by the NOAA
Weather Prediction Center can be found at:
STORM SURGE: 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 is
expected to reach the following heights above ground if the peak
surge occurs at the time of high tide...
Holly Beach to Morgan City...2 to 4 ft
San Luis Pass to west of Holly Beach incl. Galveston Bay...1 to 3 ft
Morgan City to Grand Isle...1 to 3 ft
The deepest water will occur along the immediate coast near the
area of onshore winds. Surge-related 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: Tropical storm conditions are occurring over portions of
the warning area along the coast and are likely to persist through
SURF: Swells generated by Harvey are still affecting the coasts of
Texas and Louisiana. These swells are likely to cause life-
threatening surf and rip current conditions. Please consult products
from your local weather office.
TORNADOES: A few tornadoes are possible today and tonight over
parts of Louisiana, Mississippi, southern Alabama, and southeast
Next intermediate advisory at 100 PM CDT.
Next complete advisory at 400 PM CDT.