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The official tropical weather thread 2021

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MISHI
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The official tropical weather thread 2021

Postby MISHI » August 10th, 2008, 11:56 am

Welcome to the official Tropical Weather Thread. All weather related info for Trinidad & Tobago and the Tropics in general will posted here.

All image maps and weather related satellite imagery etc are listed below:

Live RADAR
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4 Image

8 Image

9 Image

10 Image

11 Image

Saharan Dust layer
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ADDED BY XTECH
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Dust / Dry Air

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Click Link for Image Loop updated every 30min
http://rammb.cira.colostate.edu/ramsdis/online/loop.asp?data_folder=rmtc/rmtcbarir42&width=640&height=480

Live Lightning Detector Map
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(HURRICANE SEASON NOTE)

As always, from the ending of May, it comes the time once again, when we start looking eastward (and also westward in rare cases)

To all the posters, actual meteorologists (especially Hook) with info, links and warnings/ advisories... special thanks are in order. Now Trinidad may be more South of the belt, while Tobago is more in the line of fire, but this does not exempt Trinidad from being hit.

And while most like to state that God is a Trini, should a hurricane actually hit Trinidad, the cry shall become "The Devil is a Trini" as well. If you're one of those individuals... I suggest you start thinking seriously about the weather cause in a heartbeat you can lose everything: You have to experience the power that is a storm (depression/ tropical storm/ hurricane) to understand why it isn't something to be taken lightly.

- Mishi.

What you need to know & what you should have BEFORE the season starts

(This excerpt from gulf coast.com )

Step 1.

KNOW SOME OF THE DANGERS ASSOCIATED WITH A STORM.

Flooding
Can occur from heavy rains,rivers,drainage ditches.
Storm Surge
Typically associated with the land falling hurricane.
Depending on intensity of storm, can cover extremely
large areas of coastline, as Katrina demonstrated.
The storm surge typically causes the most deaths associated
with a hurricane.
High Wind
Roof damage,falling trees,power lines, can demolish entire
homes.
Tornadoes (sounds crazy for trinidad but it's possible)
Often occur with land falling hurricanes. Can cause tremendous
wind type damage very far from the center of a hurricane in
unexpected areas.
Know what potential hazards may affect you or your home. Flooding potential, storm surge susceptibility. If your home or residence may flood. (or any major threat) LEAVE.

Step 2.

Start collecting material and supplies NOW. Wood / Shutters for boarding up windows. Dont wait until the last minute to try to aquire wood and then cut and mount it. Have it precut and ready to mount. Store it until needed. I know from experience that trying to hold a 8x4 plywood sheet on a ladder in gusty wind is very difficult.
Who would have guessed that the ply-lock clips used to mount plywood sheets on windows would disappear off the shelfs as a storm approached.. Prepare Early.

Test your generator NOW (if you have one) and perform any repairs. A generator that doesnt work properly after the storm is not very helpful.

Step 3.

Have an evacuation plan. While you can not easily say where exactly you will evacuate months in advance. Ensure your friends and family know where you plan to evacuate.

Step 4.

If a hurricane developes. Stay Informed! Do be caught by suprise if a storms path or intensity changes. We know that a storms path and intensity can change dramatically in hours. In sometimes, unexpected manners. OBEY your local governments recommendations. If they suggest you leave the area..seriously consider leaving. Know where local shelters are setup. Know what is allowed to take to a shelter. Dont just show up without food or water or blankets. They may not be setup to provide them. They will be providing a place thats safer to stay in than your home in most cases.


--------------------------------------------------------------------------------


Your Disaster Supply Kit (Yes YOU should have one)-

The following (taken from the NHC Disaster Supply Kit Instructions) should be included in everyones "Kit".

Water - at least 1 gallon daily per person for 3 to 7 days (more is better)

Food - at least enough for 3 to 7 days
• non-perishable packaged or canned food / juices
• foods for infants or the elderly
• snack foods
• non-electric can opener
• cooking tools / fuel
• paper plates / plastic utensils

Blankets / Pillows, etc.

Clothing - seasonal / rain gear/ sturdy shoes

First Aid Kit / Medicines / Prescription Drugs

Special Items - for babies and the elderly

Toiletries / Hygiene items / Moisture wipes

Flashlight / Batteries (lots of batteries... also extra bulbs)

Radio - Battery operated and NOAA weather radio

TV - Battery operated...


Cash (with some small bills) - Banks and ATMs may not be open or available for extended periods.

Keys

Toys, Books and Games (to keep kids at bay)

Important documents - in a waterproof container or watertight resealable plastic bag
• insurance, medical records, bank account numbers, Social Security card, etc.

Tools - keep a set with you during the storm

Vehicle fuel tanks filled

A container with fuel or diesel for your car/ van

Pet care items
• proper identification / immunization records / medications
• ample supply of food and water
• a carrier or cage
• muzzle and leash

Ensure your Generator is functional.
Additionally we found that having several extra gas cans for our generator was VERY helpful. Also if you are able you might want to stockpile some fuel in advance, but be aware that long term storage of gas requires specific fuel additives and some very serious safety issues.


Especially make sure that things around your house that can be blown away and become missiles be secured in the event of a storm. Animals fear storms (believe it) so do not leave them loose... Make sure your house is in order structurally and any repairs do it if you can. Wind will ALWAYS find the weakest point and work frm there to destroy your items...

make sure and have at least a cellular contact for your family and neighbors and KEEP YOUR CELLPHONE CHARGED! in the event that something happens to you or you need to check on someone you are accessible.

TEMA (not sure about trini) have warning sirens out and about... if a storm approaches AND you hear the siren do not act like the boy who cried wolf... Prepare your items and DO NOT wait for the 11th hour to get your items at the supermarket...

So to all of you... keep your ears and eyes open... alert your neighbor and good luck to all of us for this and future seasons...

Terminology:
The Inter-Tropical Convergence Zone (ITCZ) is a band of clouds consisting of showers, with occasional thunderstorms, that encircles the globe near the equator. The solid band of clouds may extend for many hundreds of miles and is sometimes broken into smaller line segments.

A Tropical Disturbance is a discrete weather system of apparently organized convection, originating in the tropics or subtropics and existing for a period of over 24 hours .Disturbances are characteristically approximately 200-600 km in diameter.
Tropical waves are generally carried westward by the prevailing easterly winds along the tropics and subtropics near the equator. They can lead to the formation of tropical cyclones in the north Atlantic and eastern north Pacific basins.

A Tropical Cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain.

A Tropical Depression is a tropical cyclone with a maximum sustained wind speed of less than 39 mph.

A Tropical Storm is a tropical cyclone with maximum sustained wind speeds between 39 mph and 73 mph.

A Hurricane is a tropical cyclone with maximum sustained winds of 74 mph+.

Watches and Warnings
A Tropical Storm Watch is an announcement that tropical storm conditions (sustained winds between 39 mph and 73 mph) are possible within the specified area in association with a tropical storm within 48 hours.

A Tropical Storm Warning is an announcement that tropical storm conditions (sustained winds between 39 mph and 73 mph) are possible within the specified area in association with a tropical storm, issued 36 hours in advance of the anticipated onset of tropical-storm-force winds.

A Hurricane Watch is an announcement that hurricane conditions (sustained winds of 74 mph or higher) are possible within the specified area in association with a tropical storm within 48 hours.

A Hurricane Warning is an announcement that hurricane conditions (sustained winds of 74 mph or higher) are expected somewhere within the specified area in association with a hurricane, issued 36 hours in advance of the anticipated onset of hurricane-force winds.

Hurricanes are classified into five (05) categories based on the intensities of their sustained winds, which is known as the Saffir-Simpson hurricane wind scale:
· Category 1: Winds speeds of 74-95 mph; very dangerous winds will produce some damage
· Category 2: Wind speeds of 96-110 mph; extremely dangerous winds will cause extensive damage
· Category 3: Wind speeds of 111-129 mph; devastating damage will occur
· Category 4: Wind speeds of 130-156 mph; catastrophic damage will occur
· Category 5: Wind speeds greater than 156 mph; catastrophic damage will occur and most areas will be uninhabitable

A Major Hurricane has winds greater than 110 mph. Category 3+ e.g. Hurricane Harvey (Cat.4), Hurricane Irma (Cat.5)
Maximum Sustained Winds is the standard measure of a tropical cyclone’s intensity. It refers to the highest one-minute average wind speed (at an elevation of 10 meters with an unobstructed exposure) associated with that weather system at a particular point in time.

The Eye (of the Hurricane) is a roughly circular area of comparatively light winds that encompasses the center of a severe tropical cyclone. The eye is either completely or partially surrounded by the eyewall cloud.

A Storm Surge is the rise in sea levels following a hurricane or major storm, where the height is the difference between the observed sea level and the level the water would be without a cyclone. Storm surge is usually estimated by subtracting the normal high tide from the observed storm tide.


The older discussions from 2020 can be found here
viewtopic.php?f=4&t=759161&p=10111716
Last edited by MISHI on July 10th, 2009, 12:27 pm, edited 2 times in total.

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The official tropical weather thread 2021

Postby brickman » January 2nd, 2021, 4:13 am

Really heavy winds in p.o.s right now for the past hour,hearing galvanize flying & things falling all around the neighborhood. :skurred: :skurred:

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Re: The official tropical weather thread 2021

Postby Dave » January 2nd, 2021, 7:14 am

San Juan experiencing same all now still.

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Re: The official tropical weather thread 2021

Postby Kenjo » January 2nd, 2021, 7:58 am

Yup the winds are still heavy but not as bad as about 3 hours ago

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Re: The official tropical weather thread 2021

Postby sMASH » January 2nd, 2021, 8:28 am

front page need to have all the maps. this aint no 'official' thread yet

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Re: The official tropical weather thread 2021

Postby K74T » January 2nd, 2021, 9:10 am

Gusty winds in the west ATM

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Re: The official tropical weather thread 2021

Postby aaron17 » January 2nd, 2021, 9:14 am

Where redman?

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Re: The official tropical weather thread 2021

Postby Duane 3NE 2NR » January 2nd, 2021, 12:15 pm

Hazardous Seas Alert

Low-level winds are forecast to increase across the Southern Windwards beginning Friday night through the weekend causing rough seas across our eastern coastal waters.

In addition, long-period swells are slated to affect T&T’s northern and eastern coastlines between Friday and Monday, coinciding with peak winds.

The Trinidad and Tobago Meteorological Service has now issued a Hazardous Seas Alert (Yellow Level) for our coastal waters beginning at 5:00 AM Saturday 2nd January 2021 through 8:00 AM Monday 4th January 2021.

https://ttweathercenter.com/hazardous-s ... gh-monday/

IMG_3286.JPG

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Re: The official tropical weather thread 2021

Postby Rovin » January 2nd, 2021, 12:46 pm

chaguanas started off with hot sun this morning then past 2hrs it became over cast , swear rain gonna fall but none yet ....

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Re: The official tropical weather thread 2021

Postby Dizzy28 » January 2nd, 2021, 9:59 pm

There was just around a 15mins here in Tunapuna where the wind was really gusting. Surreal as the skies are absolutely clear but just this intense wind.

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Re: The official tropical weather thread 2021

Postby Dave » January 2nd, 2021, 10:24 pm

San Juan at it again. Would love to see the waves at the beach.

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Re: The official tropical weather thread 2021

Postby PariaMan » January 2nd, 2021, 10:52 pm

Went about 6 this evening sees was rough but nothing spectacular
Dave wrote:San Juan at it again. Would love to see the waves at the beach.

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Re: The official tropical weather thread 2021

Postby matr1x » January 2nd, 2021, 11:58 pm

2021. Interesting what if have in-store for we

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Re: The official tropical weather thread 2021

Postby redmanjp » January 3rd, 2021, 1:09 am

Dizzy28 wrote:There was just around a 15mins here in Tunapuna where the wind was really gusting. Surreal as the skies are absolutely clear but just this intense wind.


arima too

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Re: The official tropical weather thread 2021

Postby Duane 3NE 2NR » January 3rd, 2021, 9:07 pm

Temps may go below 20°C tonight in some parts of T&T

f5970e73-9b4c-4f29-a027-1986afeac5d5.jpg

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Re: The official tropical weather thread 2021

Postby nervewrecker » January 3rd, 2021, 9:26 pm

Duane 3NE 2NR wrote:Temps may go below 20°C tonight in some parts of T&T

f5970e73-9b4c-4f29-a027-1986afeac5d5.jpg


Had feeling outside that cold. Have to drop my ac on under 24 degrees sometime for the condenser to come on. Inverters measure the outside temps as well and from what I see, unless the indoor temp set lower than or close to the outdoor temp they dont really run the condensing unit. The feedback to the control unit says that they can just circulate air inside and it will get cool from heat losses to the surroundings or from fresh air. Seems most if not all designed with 30% fresh air intake in mind or from want Min of Health said 100% fresh air which was always in building code but only recently enforced with covid.

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Re: The official tropical weather thread 2021

Postby sMASH » January 3rd, 2021, 10:07 pm

22' is cold for me.
Last year when u got the 17 in piarco, I wanted to dead.

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Re: The official tropical weather thread 2021

Postby sMASH » January 4th, 2021, 12:02 am

Outside is beastly right now. Lasko tskin a rest.

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Re: The official tropical weather thread 2021

Postby dredman1 » January 4th, 2021, 12:08 am

Nice and cool in Chaguanas right now - getting 22.6*C and 76% humidity on my weather station.

Not as low as other “cold” nights in the past, but enjoying it none the less.

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Re: The official tropical weather thread 2021

Postby Duane 3NE 2NR » January 4th, 2021, 12:21 am

IMG_3298.JPG

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Re: The official tropical weather thread 2021

Postby redmanjp » January 4th, 2021, 1:50 am

Duane 3NE 2NR wrote:Temps may go below 20°C tonight in some parts of T&T

f5970e73-9b4c-4f29-a027-1986afeac5d5.jpg


a caribbean 'winter'! only thing that missing is snow

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Re: The official tropical weather thread 2021

Postby SR » January 4th, 2021, 6:10 am

Lovely temparatures

18 is what many people have thier ac set to

You need to go way below that to even consider snow

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Re: The official tropical weather thread 2021

Postby shake d livin wake d dead » January 4th, 2021, 6:28 am

20 up in the bush

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Re: The official tropical weather thread 2021

Postby aaron17 » January 4th, 2021, 8:03 am

SR wrote:Lovely temparatures

18 is what many people have thier ac set to

You need to go way below that to even consider snow
I have 17 and i does get hit up with hail from time to time.

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The official tropical weather thread 2021

Postby Duane 3NE 2NR » January 4th, 2021, 2:59 pm

Image

Uncalibrated Thermometer: Ma: Son, go outside dey and see how cold it is nah.
Son: Ohh goosh ma, it real cold yes, hadda be 15 degrees or something

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Re: The official tropical weather thread 2021

Postby Kenjo » January 4th, 2021, 5:12 pm

Duane 3NE 2NR wrote:Image

Uncalibrated Thermometer: Ma: Son, go outside dey and see how cold it is nah.
Son: Ohh goosh ma, it real cold yes, hadda be 15 degrees or something

Why even document an uncalibrated thermometer . Were these thermometers inside or outside ? Wind chill accounted for ?

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Re: The official tropical weather thread 2021

Postby sMASH » January 4th, 2021, 5:36 pm

Kenjo wrote:
Duane 3NE 2NR wrote:Image

Uncalibrated Thermometer: Ma: Son, go outside dey and see how cold it is nah.
Son: Ohh goosh ma, it real cold yes, hadda be 15 degrees or something

Why even document an uncalibrated thermometer . Were these thermometers inside or outside ? Wind chill accounted for ?
Anecdotal... Ole talk of instrumentation.

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Re: The official tropical weather thread 2021

Postby aaron17 » January 4th, 2021, 7:13 pm

Ahh boy ..another night of cold..

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Re: The official tropical weather thread 2021

Postby Rovin » January 4th, 2021, 9:24 pm

i sleep strong normel & didnt feel anything different , when i get up this morning i see fb abuzz with sometin bout low temps ...

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Re: The official tropical weather thread 2021

Postby brickman » January 4th, 2021, 9:43 pm

Last night felt normal but tonight i feel the chill.

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