|#974490 (Received by flhurricane at: 1:51 AM 13.Jul.2019)|
Tropical Storm Barry Intermediate Advisory Number 11A
NWS National Hurricane Center Miami FL AL022019
100 AM CDT Sat Jul 13 2019
...BARRY INCHING TOWARD THE LOUISIANA COAST AND EXPECTED TO
BE A HURRICANE WHEN IT MAKES LANDFALL LATER TODAY...
...DANGEROUS STORM SURGE, HEAVY RAINS, AND WIND CONDITIONS
EXPECTED ACROSS THE NORTH-CENTRAL GULF COAST...
SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION
ABOUT 70 MI...110 KM S OF MORGAN CITY LOUISIANA
ABOUT 125 MI...200 KM WSW OF THE MOUTH OF THE MISSISSIPPI RIVER
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...WNW OR 300 DEGREES AT 3 MPH...6 KM/H
MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY...
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A Hurricane Warning is in effect for...
* Intracoastal City to Grand Isle
A Tropical Storm Warning is in effect for...
* Mouth of the Pearl River to Grand Isle
* Lake Pontchartrain and Lake Maurepas including metropolitan New
* Intracoastal City to Cameron
A Storm Surge Warning is in effect for...
* Intracoastal City to Biloxi
* Lake Pontchartrain
A Storm Surge Watch is in effect for...
* Biloxi to the Mississippi/Alabama border
A Hurricane Watch is in effect for...
* Mouth of the Mississippi River to Grand Isle
* Intracoastal City to Cameron
A Tropical Storm Watch is in effect for...
* East of the Mouth of the Pearl River to the Mississippi/Alabama
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area. A warning is typically issued
36 hours before the anticipated first occurrence of
tropical-storm-force winds, conditions that make outside
preparations difficult or dangerous. 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 within 36 hours.
A Storm Surge Warning means there is a danger of life-threatening
inundation from rising water moving inland from the coastline
during the next 36 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.
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 during the next 48 hours.
A Hurricane Watch means that hurricane conditions are possible
within the watch area. A watch is typically issued 48 hours
before the anticipated first occurrence of tropical-storm-force
winds conditions that make outside preparations difficult or
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area generally within 48 hours.
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 OUTLOOK
At 100 AM CDT (0600 UTC), the center of Tropical Storm Barry was
located near latitude 28.7 North, longitude 91.1 West. Barry is
moving toward the west-northwest near 3 mph (6 km/h). A motion
toward the northwest should begin soon, followed by a turn
toward the north tonight or Sunday. On the forecast track,
the center of Barry will make landfall along the south-central
Louisiana coast later today. After landfall, Barry is expected to
move generally northward through the Mississippi Valley through
Maximum sustained winds are near 65 mph (100 km/h) with higher
gusts. Strengthening is forecast before landfall, and Barry is
expected to be a hurricane when the center reaches the Louisiana
coast later today. Steady weakening is expected after Barry moves
Tropical-storm-force winds extend outward up to 175 miles (280 km)
from the center. A Weatherflow station at Terrebonne Parish,
Louisiana, recently reported a sustained wind of 41 mph (65 km/h)
with a gust to 53 mph (85 km/h).
The estimated minimum central pressure is 993 mb (29.33 inches).
HAZARDS AFFECTING LAND
Key Messages for Barry can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC.
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 could
reach the following heights above ground somewhere in the indicated
areas if the peak surge occurs at the time of high tide...
Intracoastal City to Shell Beach...3 to 6 ft
Shell Beach to Biloxi MS...3 to 5 ft
Lake Pontchartrain...3 to 5 ft
Biloxi MS to the Mississippi/Alabama border...2 to 4 ft
Lake Maurepas...1 to 3 ft
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.
A storm surge of 2.7 feet was recently reported at a National Ocean
Service tide gauge at New Canal Station.
RAINFALL: Barry is expected to produce total rain accumulations of
10 to 20 inches over south-central and southeast Louisiana and
southwest Mississippi, with isolated maximum amounts of 25 inches.
These rains are expected to lead to dangerous, life threatening
flooding over portions of the central Gulf Coast into the Lower
Mississippi Valley beginning as early as later this morning. Across
the remainder of the Lower Mississippi Valley, total rain
accumulations of 4 to 8 inches are expected, with isolated maximum
amounts of 12 inches. By early next week, Barry is expected to
produce rainfall accumulations of 4 to 8 inches across western
portions of the Tennessee Valley.
WIND: Hurricane conditions are expected in the Hurricane Warning
area later this morning, with tropical storm conditions currently
spreading across the area. Hurricane conditions are possible within
the Hurricane Watch area later this morning. Tropical storm
conditions are occurring across the Tropical Storm Warning area in
southeastern Louisiana at this time. Tropical storm conditions are
possible in the Tropical Storm Watch area later today. Wind gusts
to tropical-storm force in squalls are possible along portions of
the coasts of Alabama and the western Florida Panhandle through
TORNADOES: A couple tornadoes are possible late today across
southeast Louisiana and southern Mississippi.
Next complete advisory at 400 AM CDT.