UPDATE 7:01pm CDT: ...EYE OF CATEGORY 4 HARVEY APPROACHING THE COAST BETWEEN PORT
ARANSAS AND PORT O'CONNOR TEXAS...
...CATASTROPHIC FLOODING EXPECTED DUE TO HEAVY RAINFALL AND STORM
SURGE...
SUMMARY OF 700 PM CDT...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...27.8N 96.8W
ABOUT 35 MI...55 KM E OF CORPUS CHRISTI TEXAS
ABOUT 50 MI...80 KM SSW OF PORT OCONNOR TEXAS
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...941 MB...27.79 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
None.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Warning is in effect for...
* Port Mansfield to High Island Texas
A Hurricane Warning is in effect for...
* Port Mansfield to Sargent Texas
A Tropical Storm Warning is in effect for...
* North of Sargent to High Island Texas
A Storm Surge Warning means there is a danger of life-threatening
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 life-threatening situation.
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area, in this case within the next few
hours. Preparations to protect life and property should already be
complete.
Interests in southwestern Louisiana should continue to monitor the
progress of this system.
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 700 PM CDT (0000 UTC), the eye of Hurricane Harvey was located by
reconnaissance aircraft and NOAA Doppler radar near latitude 27.8
North, longitude 96.8 West. Harvey is moving toward the northwest
near 8 mph (13 km/h), but its forward speed is expected to decrease
during the next couple of days. On the forecast track, Harvey will
make landfall on the middle Texas coast during the next several
hours. Harvey is then likely to meander near or just inland of the
middle Texas coast through the weekend.
Reports from an Air Force Reserve Hurricane Hunter aircraft
indicate that maximum sustained winds remain near 130 mph
(215 km/h) with higher gusts. Harvey is a category 4 hurricane on
the Saffir-Simpson Hurricane Wind Scale. Little change in strength
is likely before landfall. Weakening is then expected over the
weekend while the center moves inland over Texas.
Hurricane-force winds extend outward up to 35 miles (55 km) from
the center, and tropical-storm-force winds extend outward up to 140
miles (220 km). A Texas Coastal Ocean Observing Network station at
Aransas Pass recently reported sustained winds of 79 mph (128 km/h)
and a wind gust of 101 mph (163 km/h).
The latest minimum central pressure reported by the Hurricane
Hunter aircraft is 941 mb (27.79 inches).
HAZARDS AFFECTING LAND
----------------------
RAINFALL: Harvey is expected to produce total rain accumulations of
15 to 30 inches and isolated maximum amounts of 40 inches over the
middle and upper Texas coast through next Wednesday. During the same
time period Harvey is expected to produce total rain accumulations
of 5 to 15 inches in far south Texas and the Texas Hill Country over
through southwest and central Louisiana. Rainfall of this magnitude
will cause catastrophic and life-threatening flooding.
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...
Port Aransas to Port O'Connor...9 to 13 ft
Elsewhere N Entrance Padre Island Natl Seashore to Sargent...6 to
12 ft
Sargent to Jamaica Beach...5 to 8 ft
Port Mansfield to N Entrance Padre Island Natl Seashore...3 to 5 ft
Jamaica Beach to High Island...2 to 4 ft
Mouth of the Rio Grande to Port Mansfield...1 to 3 ft
High Island to Morgan City...1 to 3 ft
The deepest water will occur along the immediate coast near and to
the northeast of the landfall location, where the surge will be
accompanied by large and destructive waves. 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: Hurricane conditions are occuring along the coast in
the Port Aransas area and should spread over other portions of the
hurricane warning area during the next several hours. Tropical
storm conditions are occurring in other portions of the hurricane
and tropical storm warning areas. Tropical storm conditions are
likely to persist along portions of the coast through at least
Sunday.
SURF: Swells generated by Harvey are affecting the Texas,
Louisiana, and northeast Mexico coasts. 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 through Saturday near the
middle and upper Texas coast into far southwestern Louisiana.
BREAKING UPDATE 6:04pm CDT: ...6 PM CDT POSITION AND INTENSITY UPDATE...
...HARVEY BECOMES A CATEGORY FOUR HURRICANE...
...SUSTAINED HURRICANE-FORCE WINDS SPREADING ONTO THE MIDDLE TEXAS
COAST...
Air Force Reserve Reconnaissance aircraft data indicate that Harvey
has become a category 4 hurricane with maximum sustained winds of
130 mph (215 km/h).
A station at Aransas Pass run by the Texas Coastal Observing
Network recently reported a sustained wind of 74 mph (119 km/h) with
a gust to 96 mph (154 km/h).
SUMMARY OF 600 PM CDT...2300 UTC...INFORMATION
----------------------------------------------
LOCATION...27.7N 96.7W
ABOUT 45 MI...70 KM E OF CORPUS CHRISTI TEXAS
ABOUT 50 MI...85 KM SSW OF PORT OCONNOR TEXAS
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...941 MB...27.79 INCHES
BREAKING UPDATE 5:46pm CDT: According to Corpus Christi PD, Life threatening calls will be dispatched if conditions allow.
UPDATE 4:11pm CDT: ...MAJOR HURRICANE HARVEY BEARING DOWN ON THE TEXAS COAST...
...CATASTROPHIC FLOODING EXPECTED DUE TO HEAVY RAINFALL AND STORM
SURGE...
SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...27.5N 96.5W
ABOUT 60 MI...95 KM ESE OF CORPUS CHRISTI TEXAS
ABOUT 60 MI...100 KM S OF PORT OCONNOR TEXAS
MAXIMUM SUSTAINED WINDS...125 MPH...205 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...941 MB...27.79 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
The Tropical Storm Warning has been discontinued south of Port
Mansfield, Texas.
The Storm Surge Watch has been discontinued south of Port
Mansfield, Texas.
The government of Mexico has discontinued the Tropical Storm Watch
north of Boca de Catan.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Warning is in effect for...
* Port Mansfield to High Island Texas
A Hurricane Warning is in effect for...
* Port Mansfield to Sargent Texas
A Tropical Storm Warning is in effect for...
* North of Sargent to High Island Texas
A Storm Surge Warning means there is a danger of life-threatening
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 life-threatening situation.
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area, in this case within the next few
hours. Preparations to protect life and property should already be
complete.
Interests in southwestern Louisiana should continue to monitor the
progress of this system.
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 400 PM CDT (2100 UTC), the eye of Hurricane Harvey was located
by aircraft reconnaissance aircraft and NOAA Doppler radar near
latitude 27.5 North, longitude 96.5 West. Harvey is moving toward
the northwest near 10 mph (17 km/h), but its forward speed is
expected to decrease significantly during the next couple of days.
On the forecast track, Harvey will make landfall on the middle Texas
coast tonight or early Saturday. Harvey is then likely to meander
near or just inland of the middle Texas coast through the weekend.
Data from an Air Force Reserve Hurricane Hunter aircraft indicate
that maximum sustained winds have increased to near 125 mph
(205 km/h) with higher gusts. Harvey is a category 3 hurricane on
the Saffir-Simpson Hurricane Wind Scale. Some additional
strengthening is possible before Harvey makes landfall overnight.
Weakening is then expected over the weekend while the center moves
inland over Texas.
Hurricane-force winds extend outward up to 35 miles (55 km) from the
center, and tropical-storm-force winds extend outward up to 140
miles (220 km). A station at Aransas Pass, Texas, recently
reported a sustained wind 56 mph and a gust to 71 mph.
The minimum central pressure based on aircraft reconnaissance data
is 941 mb (27.79 inches).
HAZARDS AFFECTING LAND
----------------------
RAINFALL: Harvey is expected to produce total rain accumulations of
15 to 30 inches and isolated maximum amounts of 40 inches over the
middle and upper Texas coast through next Wednesday. During the same
time period Harvey is expected to produce total rain accumulations
of 5 to 15 inches in far south Texas and the Texas Hill Country over
through southwest and central Louisiana. Rainfall of this magnitude
will cause catastrophic and life-threatening flooding.
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...
N Entrance Padre Island Natl Seashore to Sargent...6 to 12 ft
Sargent to Jamaica Beach...5 to 8 ft
Port Mansfield to N Entrance Padre Island Natl Seashore...3 to 5 ft
Jamaica Beach to High Island...2 to 4 ft
Mouth of the Rio Grande to Port Mansfield...1 to 3 ft
High Island to Morgan City...1 to 3 ft
The deepest water will occur along the immediate coast near and to
the northeast of the landfall location, where the surge will be
accompanied by large and destructive waves. 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 in portions of
the hurricane and tropical storm warning areas, and hurricane
conditions are expected to begin within the hurricane warning area
in the next few hours. Tropical storm conditions are likely to
persist along portions of the coast through at least Sunday.
SURF: Swells generated by Harvey are affecting the Texas,
Louisiana, and northeast Mexico coasts. 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 through Saturday near the
middle and upper Texas coast into far southwestern Louisiana.
UPDATE 2:22pm CDT: Texas National Guard have deployed over 1,000 personnel in preparation of the incoming major hurricane.
UPDATE 2pm CDT: ...2 PM CDT POSITION AND INTENSITY UPDATE...
...HARVEY STRENGTHENS INTO A CATEGORY 3 HURRICANE...
Data from an Air Force Reserve Hurricane Hunter aircraft indicate
that the maximum sustained winds have increased to near 120 mph
(195 km/h) with higher gusts. Harvey is a category 3 hurricane on
the Saffir-Simpson Hurricane Wind Scale. The latest minimum central
pressure reported by the aircraft is 943 mb (27.85 inches).
A wind gust to 57 mph (91 km/h) was recently observed at the Naval
Air Station in Corpus Christi. A coastal observing site near Port
Aransas has measured a sustained wind of 49 mph (80 km/h) with a
gust to 60 mph (96 km/h).
A sustained wind of 59 mph (95 km/h) and a wind gust to 69 mph
(111 km/h) were recently reported by NOAA buoy 42020, located about
40 miles off the coast of Texas.
NOAA tide gauges near Corpus Christi and Port Aransas indicate
storm surge inundation of 1 to 2 ft is already occurring.
SUMMARY OF 200 PM CDT...1900 UTC...INFORMATION
----------------------------------------------
LOCATION...27.2N 96.4W
ABOUT 75 MI...120 KM ESE OF CORPUS CHRISTI TEXAS
ABOUT 85 MI...135 KM S OF PORT OCONNOR TEXAS
MAXIMUM SUSTAINED WINDS...120 MPH...195 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES
UPDATE 1pm CDT: ...WEATHER CONDITIONS DETERIORATING AND WATER LEVELS RISING ALONG
THE TEXAS COAST...
SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...27.1N 96.3W
ABOUT 85 MI...140 KM ESE OF CORPUS CHRISTI TEXAS
ABOUT 90 MI...145 KM S OF PORT OCONNOR TEXAS
MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...945 MB...27.91 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
None.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Warning is in effect for...
* Port Mansfield to High Island Texas
A Storm Surge Watch is in effect for...
* South of Port Mansfield Texas to the Mouth of the Rio Grande
A Hurricane Warning is in effect for...
* Port Mansfield to Sargent Texas
A Tropical Storm Warning is in effect for...
* North of Sargent to High Island Texas
* South of Port Mansfield Texas to the Mouth of the Rio Grande
A Tropical Storm Watch is in effect for...
* South of the Mouth of the Rio Grande to Boca de Catan Mexico
A Storm Surge Warning means there is a danger of life-threatening
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 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.
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area, in this case within the next 12
to 24 hours. Preparations to protect life and property should be
rushed to completion.
A Storm Surge Watch means there is a possibility of life-
threatening inundation from rising water moving inland from the
coastline in the indicated locations.
Interests in southwestern Louisiana should continue to monitor the
progress of this system.
For storm information specific to your area in the United States,
including possible inland watches and warnings, please monitor
products issued by your local National Weather Service forecast
office. For storm information specific to your area outside the
United States, please monitor products issued by your national
meteorological service.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 100 PM CDT (1800 UTC), the eye of Hurricane Harvey was located by
a NOAA Hurricane Hunter aircraft and NOAA Doppler radar near
latitude 27.1 North, longitude 96.3 West. Harvey is moving toward
the northwest near 10 mph (17 km/h), but its forward speed is
expected to decrease significantly during the next couple of days.
On the forecast track, Harvey will make landfall on the middle Texas
coast tonight or early Saturday. Harvey is then likely to meander
near or just inland of the middle Texas coast through the weekend.
Maximum sustained winds are near 110 mph (175 km/h) with higher
gusts. Some strengthening is possible, and Harvey is forecast to
become a major hurricane before it reaches the middle Texas coast.
Hurricane-force winds extend outward up to 35 miles (55 km) from
the center, and tropical-storm-force winds extend outward up to 140
miles (220 km). A wind gust of 56 mph was recently reported at the
Corpus Christi Naval Air Station. In addition, a wind gust of 53
mph was reported at Port Aransas, and a gust to 51 mph was measured
at the Bob Hall Pier near Corpus Christi. A sustained wind of 56
mph and a gust to 69 mph were measured by NOAA buoy 42020.
The minimum central pressure based on data from the NOAA plane
is 945 mb (27.91 inches).
HAZARDS AFFECTING LAND
----------------------
RAINFALL: Harvey is expected to produce total rain accumulations
of 15 to 25 inches and isolated maximum amounts of 35 inches over
the middle and upper Texas coast through next Wednesday. During
the same time period Harvey is expected to produce total rain
accumulations of 5 to 15 inches in far south Texas and the Texas
Hill Country over through southwest and central Louisiana. Rainfall
of this magnitude will cause catastrophic and life-threatening
flooding.
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...
N Entrance Padre Island Natl Seashore to Sargent...6 to 12 ft
Sargent to Jamaica Beach...5 to 8 ft
Port Mansfield to N Entrance Padre Island Natl Seashore...5 to 7 ft
Jamaica Beach to High Island...2 to 4 ft
Mouth of the Rio Grande to Port Mansfield...2 to 4 ft
High Island to Morgan City...1 to 3 ft
The deepest water will occur along the immediate coast near and to
the northeast of the landfall location, where the surge will be
accompanied by large and destructive waves. 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: All last-minute preparations should be rushed to completion
since tropical storm conditions are now occurring in portions of the
hurricane and tropical storm warning areas. Hurricane conditions
are likely to begin within the hurricane warning area later today or
tonight. Tropical storm conditions are likely to persist along
portions of the coast through at least Sunday.
SURF: Swells generated by Harvey are affecting the Texas,
Louisiana, and northeast Mexico coasts. 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 later today through
Saturday near the middle and upper Texas coast.
BREAKING WEATHER NEWS: Texas - Cat 3+ hurricane Harvey is expected to hit Texas hard with a predicted landfall this evening hours.
Information from National Weather Service Hurricane Center:
Multiple observing platforms indicate that Harvey's structure is evolving this morning. The hurricane has developed concentric eyewalls, as observed in data from the WSR-88D Doppler radars in
Brownsville and Corpus Christi, and an Air Force Reserve Hurricane Hunter plane reported double wind maxima with diameters of 12 and 28 n mi. The aircraft data indicate that the central pressure has continued to fall--now down to 947 mb--but the maximum winds have not increased further. This discrepancy is not surprising given hurricane's current structure.
Intensity forecasts become complicated once a hurricane develops concentric eyewalls, and fluctuations in intensity become more likely. If an eyewall replacement occurs, then Harvey's intensity could decrease a bit while at the same time the overall wind field increases in size. However, the hurricane remains in an environment for intensification, and strengthening beyond the current intensity is still possible before the center reaches land. But in the end, the hurricane's exact intensity at landfall does not change the fact that catastrophic flooding due to a prolonged period of heavy rainfall and/or storm surge is expected at the coast and well inland across much of southern and southeastern Texas. Slow weakening is expected after Harvey crosses the coast since the center is not expected to move very far inland, and the cyclone is likely to maintain tropical storm status through Wednesday.
Harvey has not quite begun to slow down, and the initial motion estimate is 315/9 kt. Strong mid-level ridging building over the western United States is still expected to impede Harvey's forward
motion in the coming days, and the track guidance continues to show the hurricane meandering or stalling near or just inland of the Texas coast in 36-48 hours. Harvey could begin moving slowly
eastward on days 4 and 5 due to the influence of a mid-level shortwave trough digging southward over the upper Midwest, but at this time it is too early to say whether the center will definitely
re-emerge over the northwestern Gulf of Mexico.
Key Messages:
1. Harvey is expected to be a major hurricane when it makes landfall
tonight, bringing life-threatening storm surge, rainfall, and wind
hazards to portions of the Texas coast. Preparations should be
rushed to completion in the warning areas as tropical-storm-force
winds are arriving on the coast, and conditions will continue to
deteriorate through the rest of today and tonight.
2. A Storm Surge Warning is in effect for much of the Texas coast.
Life-threatening storm surge flooding could reach heights of 6 to 12
feet above ground level at the coast between the north entrance of
the Padre Island National Seashore and Sargent. For a depiction of
areas at risk, see the Storm Surge Watch/Warning Graphic at
hurricanes.gov. Due to the slow motion of Harvey and a prolonged
period of onshore flow, water levels will remain elevated for
several days.
3. Catastrophic and life-threatening flooding is expected across the
middle and upper Texas coast from heavy rainfall of 15 to 25 inches,
with isolated amounts as high as 35 inches, through Wednesday.
Please refer to products from your local National Weather Service
office and the NOAA Weather Prediction Center for more information
on the flooding hazard.
4. The Potential Storm Surge Flooding Map is available on the NHC
website. This product depicts a reasonable worst-case scenario -
the amount of inundation that has a 10 percent chance of being
exceeded at each individual location. This map best represents
the flooding potential in those locations within the watch and
warning areas.
...OUTER RAINBAND FROM HARVEY SWIPING THE LOWER AND MIDDLE TEXAS
COASTS...
...CATASTROPHIC FLOODING EXPECTED ACROSS PORTIONS OF SOUTHERN AND
SOUTHEASTERN TEXAS...
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
The Hurricane Watch south of Port Mansfield Texas to the Mouth of
the Rio Grande has been discontinued.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Warning is in effect for...
* Port Mansfield to High Island Texas
A Storm Surge Watch is in effect for...
* South of Port Mansfield Texas to the Mouth of the Rio Grande
A Hurricane Warning is in effect for...
* Port Mansfield to Sargent Texas
A Tropical Storm Warning is in effect for...
* North of Sargent to High Island Texas
* South of Port Mansfield Texas to the Mouth of the Rio Grande
A Tropical Storm Watch is in effect for...
* South of the Mouth of the Rio Grande to Boca de Catan Mexico
A Storm Surge Warning means there is a danger of life-threatening
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 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.
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area, in this case within the next 12
to 24 hours. Preparations to protect life and property should be
rushed to completion.
A Storm Surge Watch means there is a possibility of life-
threatening inundation from rising water moving inland from the
coastline in the indicated locations.
Interests in southwestern Louisiana should continue to monitor the
progress of this system.
For storm information specific to your area in the United
States, including possible inland watches and warnings, please
monitor products issued by your local National Weather Service
forecast office. For storm information specific to your area outside
the United States, please monitor products issued by your national
meteorological service.
HAZARDS AFFECTING LAND
----------------------
RAINFALL: Harvey is expected to produce total rain accumulations
of 15 to 25 inches and isolated maximum amounts of 35 inches over
the middle and upper Texas coast through next Wednesday. During
the same time period Harvey is expected to produce total rain
accumulations of 5 to 15 inches in far south Texas and the Texas
Hill Country over through southwest and central Louisiana. Rainfall
of this magnitude will cause catastrophic and life-threatening
flooding.
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...
N Entrance Padre Island Natl Seashore to Sargent...6 to 12 ft
Sargent to Jamaica Beach...5 to 8 ft
Port Mansfield to N Entrance Padre Island Natl Seashore...5 to 7 ft
Jamaica Beach to High Island...2 to 4 ft
Mouth of the Rio Grande to Port Mansfield...2 to 4 ft
High Island to Morgan City...1 to 3 ft
The deepest water will occur along the immediate coast near and to
the northeast of the landfall location, where the surge will be
accompanied by large and destructive waves. 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: All last-minute preparations should be rushed to completion
since tropical storm conditions are likely just beginning in
portions of the hurricane and tropical storm warning areas.
Hurricane conditions are likely to begin within the hurricane
warning area later today or tonight. Tropical storm conditions are
likely to persist along portions of the coast through at least
Sunday.
SURF: Swells generated by Harvey are affecting the Texas,
Louisiana, and northeast Mexico coasts. 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 later today through
Saturday near the middle and upper Texas coast.
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