Monday, August 24, 2020

Aug. 24 20

 The day was very warm and mostly cloudy. Lots of sunshine and humidity. There was a low chance of rain but no rain fell that I am aware of. No pictures from my phone as there is not enough space.


Still biting my nails:








Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 242307
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
607 PM CDT Mon Aug 24 2020

.AVIATION [00Z TAF Issuance]...

VFR throughout, with afternoon winds becoming light this evening.
Northeasterly winds increase to around 10 knots again tomorrow
afternoon, with a better chance of afternoon showers/storms as
moisture from Marco`s remnants move into the area.

&&

.PREV DISCUSSION /Issued 316 PM CDT Mon Aug 24 2020/...

.DISCUSSION...

While the weakening Tropical Storm Marco still exists, this
forecast is dominated by Tropical Storm Laura. The forecast brings
a near-major hurricane onshore just east of our area in Southwest
Louisiana, leaving us on a razor`s edge between major and lesser
impacts. While confidence is increasing in the forecast for this
storm, there are still important pieces of model guidance that
suggest we need to stay on our toes, and be prepared for changes
in the forecast track, potentially resulting in more significant
impact from Laura.

.SHORT TERM [Through Tuesday Night]...

For the meantime, the weather is actually fairly pleasant. We have
some scattered showers, almost exclusively over the Gulf of
Mexico, but all in all a pretty typical summer day. With the
decapitation of Tropical Storm Marco to our east, tomorrow will
probably look fairly similar. With the influx of the storm`s
remnant surface circulation and some boundary layer moisture, we
can expect better chances of rain over land, particularly east of
I-45, but even then - I`d expect something that`s smacks more of a
typical summer day than a tropical cyclone.

If Laura moves faster than expected, we may start to see showers
from the outer edge of the storm`s moisture envelope start to
spread over the nearshore Gulf waters and begin to encroach on the
coast...but for Laura, the real show holds off for the long term
portion of this forecast.


.LONG TERM/TROPICAL [Wednesday Through Monday]...

The portion of the forecast dominated by Laura is fraught with
peril, as the NHC forecast puts us just west of a landfalling
high-end Category 2 hurricane. This area, like it so frequently
is, features a very sharp gradient between significant impact and
a more gentle treatment. Giving some comfort is the consolidation
of the forecast guidance on the NHC track, giving us greater
certainty in the official forecast. We surely cannot sleep on this
storm, as even a small westward shift in track and/or a
significant increase in the hurricane wind field could change our
expected impacts for the worse. Indeed, the Euro ensemble
stubbornly refuses to hop on board with the SW Louisiana idea, so
we will have to continue to watch carefully, and prepare for quick
action if the forecast changes.

With all of those disclaimers, here are our expectations given the
official forecast. Please check NHC products and local hurricane
statements for more details and the latest information:

Storm Surge - Potentially life threatening surge could be seen in
locations from San Luis Pass up the coast. Up to 2 to 4 feet of
surge could be seen as a worst case on Gulf-facing portion of
Galveston Island, and up to 4 to 6 feet on the Bolivar Peninsula
and Chambers Island coast. Some coastal flooding issues could be
seen from high surf and wave run-up further down the coast
towards Matagorda Bay.

Wind - The highest threat for our area to see damaging hurricane
winds will be on the Gulf waters offshore of Galveston Bay, as
well as on the Bolivar Peninsula and eastern Chambers County. Much
of the rest of the area will see an elevated risk of tropical
storm winds on the west side of the storm.

Tornadoes - It`s too early to say with much specificity, but the
greatest tornado threat tends to be in the right front quadrant of
the storm, east of the storm`s center. Given that we are likely to
be on the west side of the storm, tornado threat should be lower.

Flooding Rains - Thanks to the storm`s expected consistent motion
and our position on the west side of the storm, our concern for
flooding rains is relatively low, particularly given our...recent
history. That said, training bands on the outer portion of the
storm could still provide an elevated risk of heavy rain and flash
flooding in the eastern part of our area, east of I-45.


.MARINE...

Though Marco is rapidly making itself a minor part of the weather
forecast, some marine impacts are already baked in as swell
propagates into our waters from the east. Seas of 3 to 5 feet can
be expected into tonight, before waves briefly go into a lull
ahead of the arrival of Laura`s swell.

Early Wednesday morning, look for seas to increase again as Laura
approaches, with seas building as high as 7 to 14 feet late
Wednesday afternoon into Wednesday night. Assuming the NHC track
holds, seas will begin to very, very slowly subside after
midnight. Though the highest waves will subside by Thursday
morning, SCEC to Advisory-level seas will persist deep into the
week. This forecast is obviously dominated by the track and
strength of Laura, and are subject to change significantly if that
forecast changes.

&&

.PRELIMINARY POINT TEMPS/POPS...

College Station (CLL)  75  97  76  95  76 /  10  20  20  40  30
Houston (IAH)          77  96  77  94  78 /  10  30  20  50  40
Galveston (GLS)        82  92  82  90  82 /  10  30  70  70  60

&&

.HGX WATCHES/WARNINGS/ADVISORIES...

TX...Hurricane Watch for the following zones: Chambers...Galveston
     Island and Bolivar Peninsula...Southern Liberty.

     Tropical Storm Watch for the following zones: Coastal
     Galveston...Coastal Harris...Inland Galveston...Inland
     Harris...Montgomery...Northern Liberty...Polk...San
     Jacinto...Trinity...Walker.

GM...Hurricane Watch for the following zones: Coastal waters from
     High Island to Freeport TX out 20 NM...Galveston
     Bay...Waters from High Island to Freeport TX from 20 to 60
     NM.


&&

$$

DISCUSSION...Luchs
SHORT TERM...Luchs
LONG TERM/TROPICAL...Luchs
AVIATION...Luchs
MARINE...Luchs

Tropical Storm Watch

Laura Local Watch/Warning Statement/Advisory Number 21
National Weather Service Houston/Galveston TX  AL132020
1005 PM CDT Mon Aug 24 2020

TXZ213-251115-
/O.CON.KHGX.TR.A.1013.000000T0000Z-000000T0000Z/
Inland Harris-
1005 PM CDT Mon Aug 24 2020

...TROPICAL STORM WATCH REMAINS IN EFFECT...

* WIND
    - LATEST LOCAL FORECAST: Below tropical storm force wind
        - Peak Wind Forecast: 10-15 mph with gusts to 15 mph

    - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
      UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 74
      to 110 mph
        - The wind threat has remained nearly steady from the
          previous assessment.
        - PLAN: Plan for life-threatening wind of equivalent CAT 1 or
          2 hurricane force.
        - PREPARE: Efforts to protect life and property should now be
          rigorously underway. Prepare for considerable wind damage.
        - ACT: Act now to complete preparations before the wind
          becomes hazardous.

    - POTENTIAL IMPACTS: Extensive
        - Considerable roof damage to sturdy buildings, with some
          having window, door, and garage door failures leading to
          structural damage. Mobile homes severely damaged, with some
          destroyed. Damage accentuated by airborne projectiles.
          Locations may be uninhabitable for weeks.
        - Many large trees snapped or uprooted along with fences and
          roadway signs blown over.
        - Some roads impassable from large debris, and more within
          urban or heavily wooded places. Several bridges, causeways,
          and access routes impassable.
        - Large areas with power and communications outages.

* STORM SURGE
    - No storm surge inundation forecast

    - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
      UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Little to no storm
      surge flooding
        - The storm surge threat has remained nearly steady from the
          previous assessment.
        - PLAN: There is little to no threat of storm surge flooding.
          Rough surf, coastal erosion, and life-threatening rip
          currents are possible.
        - PREPARE: Little to no preparations for storm surge flooding
          are needed.
        - ACT: Follow the instructions of local officials. Monitor
          forecasts.

    - POTENTIAL IMPACTS: Little to None
        - Little to no potential impacts from storm surge flooding.

* FLOODING RAIN
    - LATEST LOCAL FORECAST:
        - Peak Rainfall Amounts: 1-3 inches, with locally higher
          amounts

    - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
      UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for
      localized flooding rain
        - The flooding rain threat has remained nearly steady from
          the previous assessment.
        - PLAN: Emergency plans should include the potential for
          localized flooding from heavy rain.
        - PREPARE: Consider protective actions if you are in an area
          vulnerable to flooding.
        - ACT: Heed any flood watches and warnings.

    - POTENTIAL IMPACTS: Limited
        - Localized rainfall flooding may prompt a few evacuations.
        - Rivers and tributaries may quickly rise with swifter
          currents. Small streams, creeks, canals, and ditches may
          become swollen and overflow in spots.
        - Flood waters can enter a few structures, especially in
          usually vulnerable spots. A few places where rapid ponding
          of water occurs at underpasses, low-lying spots, and poor
          drainage areas. Several storm drains and retention ponds
          become near-full and begin to overflow. Some brief road and
          bridge closures.

* TORNADO
    - LATEST LOCAL FORECAST:
        - Situation is unfavorable for tornadoes

    - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
      UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected
        - The tornado threat has remained nearly steady from the
          previous assessment.
        - PLAN: Tornadoes are not expected. Showers and thunderstorms
          with gusty winds may still occur.
        - PREPARE: Little to no preparations needed to protect
          against tornadoes at this time. Keep informed of the latest
          tornado situation.
        - ACT: Listen for changes in the forecast.

    - POTENTIAL IMPACTS: Little to None
        - Little to no potential impacts from tornadoes.

$$

Hurricane Local Statement

Tropical Storm Laura Local Statement Advisory Number 21
TXZ163-164-176>179-195>200-210>214-226-227-235>238-300-313-
335>338-436>438-251145-

Tropical Storm Laura Local Statement Advisory Number 21
National Weather Service Houston/Galveston TX  AL132020
1033 PM CDT Mon Aug 24 2020

This product covers Southeast Texas

**LAURA HAS ENTERED THE GULF OF MEXICO, WILL THREATEN THE
NORTHWESTERN GULF COAST MIDWEEK.**

NEW INFORMATION
---------------

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Hurricane Watch is in effect for Southern Liberty
    - A Storm Surge Watch and Hurricane Watch are in effect for
      Chambers and Galveston Island and Bolivar Peninsula
    - A Tropical Storm Watch is in effect for Inland Galveston,
      Inland Harris, Montgomery, Northern Liberty, Polk, San Jacinto,
      Trinity, and Walker
    - A Storm Surge Watch is in effect for Brazoria Islands and
      Coastal Brazoria
    - A Storm Surge Watch and Tropical Storm Watch are in effect for
      Coastal Galveston and Coastal Harris

* STORM INFORMATION:
    - About 810 miles east-southeast of Galveston TX
    - 22.7N 84.0W
    - Storm Intensity 65 mph
    - Movement West-northwest or 290 degrees at 20 mph

SITUATION OVERVIEW
------------------

Tropical Storm Laura made landfall on the Pinar del Rio province around
7pm CDT, and since then has moved into the southern Gulf of Mexico. It
has maximum sustained winds of around 65 mph and is moving west-
northwest around 20 mph. Laura will be moving through favorable
conditions for strengthening and is expected to reach hurricane
strength by Tuesday afternoon. Additional strengthening is expected
through the next few days, and Laura may be approaching major hurricane
strength as it approaches the northwestern Gulf Coast. Laura is expected
to continue to move in a west-northwestward movement through Tuesday
before turning northwestward and then northward on Wednesday. This
brings Laura near the Texas/Lousiana border Wednesday night. At this
point in the forecast, track forecasts have an average error of around
80 miles.

Specific impacts will be strongly dependent on the exact track and
intensity of the storm when it makes landfall. Stay alert to the latest
forecast information! Adjustments to track may require additional
watches or warnings further down the Southeast Texas Gulf Coast.


POTENTIAL IMPACTS
-----------------

* SURGE:
Prepare for life-threatening surge having possible significant
impacts across Galveston Island and the Bolivar Peninsula. Potential
impacts in this area include:
    - Areas of inundation with storm surge flooding accentuated by
      waves. Damage to several buildings, mainly near the coast.
    - Sections of near-shore escape routes and secondary roads become
      weakened or washed out, especially in usually vulnerable low
      spots.
    - Major beach erosion with heavy surf breaching dunes. Strong and
      numerous rip currents.
    - Moderate damage to marinas, docks, boardwalks, and piers.
      Several small craft broken away from moorings, especially in
      unprotected anchorages.

Also, prepare for locally hazardous surge having possible limited
impacts across portions of the Southeast Texas Gulf Coast.

* WIND:
Prepare for life-threatening wind having possible extensive impacts
across the Bolivar Peninsula, and the east shore of Galveston Bay.
Potential impacts in this area include:
    - Considerable roof damage to sturdy buildings, with some having
      window, door, and garage door failures leading to structural
      damage. Mobile homes severely damaged, with some destroyed.
      Damage accentuated by airborne projectiles. Locations may be
      uninhabitable for weeks.
    - Many large trees snapped or uprooted along with fences and
      roadway signs blown over.
    - Some roads impassable from large debris, and more within urban
      or heavily wooded places. Several bridges, causeways, and
      access routes impassable.
    - Large areas with power and communications outages.

Also, prepare for dangerous wind having possible limited to
significant impacts across portions of Southeast Texas.

* FLOODING RAIN:
Prepare for dangerous rainfall flooding having possible significant
impacts east of Galveston Bay. Potential impacts include:
    - Moderate rainfall flooding may prompt several evacuations and
      rescues.
    - Rivers and tributaries may quickly become swollen with swifter
      currents and overspill their banks in a few places, especially
      in usually vulnerable spots. Small streams, creeks, canals, and
      ditches overflow.
    - Flood waters can enter some structures or weaken foundations.
      Several places may experience expanded areas of rapid
      inundation at underpasses, low-lying spots, and poor drainage
      areas. Some streets and parking lots take on moving water as
      storm drains and retention ponds overflow. Driving conditions
      become hazardous. Some road and bridge closures.

Prepare for locally hazardous rainfall flooding having possible
limited impacts across across much of Southeast Texas.

PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------

* EVACUATIONS:
listen to local official for recommended preparedness actions,
including possible evacuation. If ordered to evacuate, do so
immediately.

If evacuating, leave with a destination in mind and allow extra time
to get there. Take your emergency supplies kit. Gas up your vehicle
ahead of time.

* OTHER PREPAREDNESS INFORMATION:
Now is the time to check your emergency plan and emergency supplies
kit and take necessary actions to protect your family and secure your
home or business.

When making safety and preparedness decisions, do not focus on the
exact forecast track since hazards such as flooding rain, damaging
wind gusts, storm surge, and tornadoes extend well away from the
center of the storm.

Always heed the advice of local officials and comply with orders that
are issued. Do not needlessly jeopardize your life or the lives of
others.

Closely monitor weather.gov, NOAA Weather Radio and local news
outlets for official storm information. Listen for possible changes
to the forecast.


* ADDITIONAL SOURCES OF INFORMATION:
- For information on appropriate preparations see ready.gov
- For information on creating an emergency plan see getagameplan.org
- For additional disaster preparedness information see redcross.org

NEXT UPDATE
-----------

The next local statement will be issued by the National Weather
Service in Houston/Galveston TX around 4 AM CDT, or sooner if
conditions warrant.

$$

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