Local officials told to watch water levels at dams as tropical depression approaches

[webfact]

Local officials told to watch water levels at dams as tropical depression approaches

By THE NATION

 

File photo of Khun Dan Prakarn Chon reservoir.

 

Provincial authorities have been alerted to monitor the water levels in dams and reservoirs around the clock and prepare for evacuation as heavy rains are expected during October 7-9.

 

The deputy secretary-general at the Office of National Water Resources (ONWR), Samrerng Saengphuwong, cited the Thailand Meteorological Department’s forecast that a category 1 active low pressure cell in the middle of the South China Sea was likely to intensify into a category 2 tropical depression and was expected to move to the Gulf of Thailand by October 8. It was likely to bring isolated heavy to very heavy rain in the lower Northeast, the East, the Central and the South from October 7-9.

 

The ONWR in particular has urged authorities to monitor the water level of Khun Dan Prakarn Chon reservoir in Nakhon Nayok province and Nong Pla Lai reservoir in Rayong province, as they are nearly at full capacity and could cause flash floods in nearby areas.

 

The office also warned that from October 7-12, the following provinces would be prone to flash floods, water runoffs and landslides:

 

Northern region: Chiang Rai, Chiang Mai, Mae Hong Son, Tak, Nan, Phitsanulok, Uttaradit, Phetchabun, Uthai Thani.

 

Northeastern region: Chaiyaphum, Loei, Khon Kaen, Nakhon Ratchasima

 

Eastern region: Prachin Buri, Nakhon Nayok, Sa Kaeo, Chonburi, Rayong

 

Western region: Ratchaburi, Kanchanaburi, Phetburi, Prachuap Khiri Khan

 

Southern region: Chumphon, Surat Thani, Nakhon Si Thammarat, Trang and Stun.

 

Authorities in these areas should update local people of the situation and prepare for evacuation if necessary, the ONWR advised.

 

Source: https://www.nationthailand.com/news/30395684

 

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[NCC1701A]

 

Weather Warning "Active Low-Pressure Cell in middle South China Sea" No. 1 Time Issued : October 5, 2020

The active low-pressure cell in the middle South China Sea is likely to further form a depression tomorrow. By 7 October, it is expected to move ashore in southern Vietnam. By 8 October, the storm will move west to move to the upper Gulf of Thailand. From 7-9 October, isolated heavy to very heavy rains will be possible for the lower Northeast, the East, the Central and the South.         In addition, the southwest monsoon across the Andaman Sea, southern Thailand and the Gulf of Thailand will intensify from 6-9 October with more rain in the South. Isolated heavy to very heavy rain is possible.

 

good luck. we are all counting on you. 

 

Edited October 6, 2020 by NCC1701A

[Grumpy John]

???? We are full up now. I'd like to get a rain check on that....till November or December.....  ????

[JoePai]

I'm confused, we may have too much water in a few days ?

[petermik]

7 hours ago, JoePai said:

I'm confused, we may have too much water in a few days ?

All depends on where (if) it falls....

[NCC1701A]

you can see rain out in front of the low just entering frame on the right. should be interesting to monitor for the next few days. 

 

http://rammb.cira.colostate.edu/ramsdis/online/loop.asp?data_folder=himawari-8/southeast_asia_band_13&width=1020&height=720&number_of_images_to_display=24

 

 

 

 

Edited October 6, 2020 by NCC1701A

[Golden Triangle]

2 minutes ago, NCC1701A said:

you can see the low pressure area just entering frame on the right. should be interesting to monitor for the next few days. 

 

http://rammb.cira.colostate.edu/ramsdis/online/loop.asp?data_folder=himawari-8/southeast_asia_band_13&width=1020&height=720&number_of_images_to_display=24

 

 

 

 

Would be grateful for your updates sir, you make a bit more sense than the Met office most of the time ????

[2 is 1]

1 hour ago, webfact said:

Local officials told to watch water levels at dams as tropical depression approaches

So they don't know where is valve to lead water out!? Why not start before sht is in pans!

[Dumbastheycome]

1 hour ago, 2 is 1 said:

So they don't know where is valve to lead water out!? Why not start before sht is in pans!

In some situations they do so . Monitoring actual inflow is the  warning advice. Simply dumping  vast amounts of water can cause  issues downstream.

[Dumbastheycome]

1 hour ago, JoePai said:

I'm confused, we may have too much water in a few days ?

Some areas  have near full storage. Others  are still well short.

[holy cow cm]

Bring it on. Makes afternoons enjoyable sitting at home.  

[hotchilli]

4 hours ago, webfact said:

The ONWR in particular has urged authorities to monitor the water level of Khun Dan Prakarn Chon reservoir in Nakhon Nayok province and Nong Pla Lai reservoir in Rayong province, as they are nearly at full capacity and could cause flash floods in nearby areas.

Would it not be prudent to let a bit go before the rains come?

[bkkcanuck8]

3 hours ago, hotchilli said:

Would it not be prudent to let a bit go before the rains come?

Let it all go, get the flood over before it becomes an issue later ????

[Barry343]

17 hours ago, hotchilli said:

Would it not be prudent to let a bit go before the rains come?

In some areas the dams are around 47% full.

[hotchilli]

14 minutes ago, Barry343 said:

In some areas the dams are around 47% full.

I was talking about the full ones ?

[NCC1701A]

Latest radar:

https://weather.tmd.go.th/sknLoop.php

 

Latest sat:

http://rammb.cira.colostate.edu/ramsdis/online/loop.asp?data_folder=himawari-8/southeast_asia_band_13&width=1020&height=720&number_of_images_to_display=24

 

lots of moisture moving east to west. 

Latest radar and sat:

[CGW]

1 hour ago, hotchilli said:

I was talking about the full ones ?

There are no full ones, most are Way down to what would be expected this time of year.

https://www.thaiwater.net/DATA/REPORT/php/rid_dam_1.php?lang=en

 

[hotchilli]

15 minutes ago, CGW said:

There are no full ones, most are Way down to what would be expected this time of year.

https://www.thaiwater.net/DATA/REPORT/php/rid_dam_1.php?lang=en

 

So why the warning?

[CGW]

3 minutes ago, hotchilli said:

So why the warning?

? socialism at work, they got your back - otherwise - no idea, unless they are lying on a daily basis about how much water is really stored, I live next to a reservoir and that is at its lowest level for many years.

[connda]

Lordy, feast or famine.  I swear last week there was an article saying how Thai reservoirs were in dire straits.  Today it's, "Naam Tuam!!!  Flooding past capacity of the dams.  Look out below!!!" 
Thailand seriously needs to hire some experts from the Netherlands to come and fix their water management issues that constantly plague this country.

[connda]

In the meanwhile, glad to see we're gonna get more rain.  My guess is that the reservoirs aren't close to being capped off and the country can use as much as it can get.

[NCC1701A]

latest visible sat:

 

 

[NCC1701A]

Weather Warning " Active low pressure cell over the South of Vietnam" No. 9 Time Issued : October 8, 2020

The category 1 active low pressure cell covers the Southern of Vietnam and western of Cambodia.         It is moving west slowly. It is expected will be moving through Cambodia, the Eastern part of Thailand into the upper Gulf of Thailand on 8 October. These is cause during 8-9 October, isolated heavy to very heavy rains and strong wind will be possible for the lower Northeast, the East, the Central including Bangkok and         its vicinity and the South. People in the risky areas should beware of the severe rains that may cause flash floods and water runoff including beware of strong wind by keeping off large trees and unsecured buildings.

[NCC1701A]

if you watch this loop you can see the center of the low south of Koh Chang.

 

all the rain you see on the radar is rotating around that low.  

 

https://weather.tmd.go.th/THA_loop.php

 

you can see the center of the low pressure here:

 

 

[rickudon]

Only one reservoir full so far. Average across all reservoirs is still only 55%. We only got drizzle  and cloud for a couple of days.