SATL: YAKECAN - Subtropical Storm

[Subtrop]

SPECIAL WARNING
ISSUED AT 0000Z – TUE - 17/MAY/2022
SUBTROPICAL STORM "YAKECAN" WITH ESTIMATED CENTRAL PRESSURE OF 994 HPA AT 38S044W, MOVING TO
WEAST/NORTHWEAST WITH ESTIMATED MAXIMUM WINDS 45 KT ON CYCLONE SOUTH SECTOR.
FORECAST: CYCLONIC WIND FORCE 8/11 (35-60 KNOTS) WITH GUSTS WITHIN 400 NM AROUND THE CENTER.
ROUGH/VERY ROUGH SEA ASSOCIATED.
ESTIMATED POSITION:
1712Z: 34.SS050.5W - 994 HPA - ESTIMATED MAXIMUM SUSTAINED WIND 45-50 KNOTS - SUBTROPICAL STORM
1800Z: 31S049W - 994 HPA - – ESTIMATED MAXIMUM SUSTAINED WIND 45-60 KNOTS - TROPICAL STORM
1812Z: 28.5S0345W - 994 HPA – ESTIMATED MAXIMUM SUSTAINED WIND 40-50 KNOTS - TROPICAL STORM
1900Z: 28.8S040W - 990 HPA – ESTIMATED MAXIMUM SUSTAINED WIND 40-50 KNOTS - TROPICAL STORM
1912Z: 30.2S035.5W - 990 HPA – ESTIMATED MAXIMUM SUSTAINED WIND 35-45 KNOTS - SUBTROPICAL STORM
VALID UNTIL 191200Z.

[jaguarjace]

[Meow]

SPECIAL WARNING
ISSUED AT 0000Z – TUE - 17/MAY/2022
SUBTROPICAL STORM "YAKECAN" WITH ESTIMATED CENTRAL PRESSURE OF 994 HPA AT 38S044W, MOVING TO
WEAST/NORTHWEAST WITH ESTIMATED MAXIMUM WINDS 45 KT ON CYCLONE SOUTH SECTOR.
FORECAST: CYCLONIC WIND FORCE 8/11 (35-60 KNOTS) WITH GUSTS WITHIN 400 NM AROUND THE CENTER.
ROUGH/VERY ROUGH SEA ASSOCIATED.
ESTIMATED POSITION:
1712Z: 34.SS050.5W - 994 HPA - ESTIMATED MAXIMUM SUSTAINED WIND 45-50 KNOTS - SUBTROPICAL STORM
1800Z: 31S049W - 994 HPA - – ESTIMATED MAXIMUM SUSTAINED WIND 45-60 KNOTS - TROPICAL STORM
1812Z: 28.5S0345W - 994 HPA – ESTIMATED MAXIMUM SUSTAINED WIND 40-50 KNOTS - TROPICAL STORM
1900Z: 28.8S040W - 990 HPA – ESTIMATED MAXIMUM SUSTAINED WIND 40-50 KNOTS - TROPICAL STORM
1912Z: 30.2S035.5W - 990 HPA – ESTIMATED MAXIMUM SUSTAINED WIND 35-45 KNOTS - SUBTROPICAL STORM
VALID UNTIL 191200Z.

To be the first named storm transitioning from SS to TS in this basin.

[Sciencerocks]

[Hurricane2021]

https://imagizer.imageshack.com/img924/215/o6xOZ2.gif

What a mess honestly, this was better yesterday

this cyclone might still be able to take some walls and roofs around here, as we have almost no preparation for a cyclone, even if it is a weak one

[jaguarjace]

Disclaimer: NOAA SSD no longer supports GOES Floaters. This product was manually generated by me.


Radar at 16:57 UTC
Source: https://redemet.decea.gov.br/

[Hurricane2021]

 https://twitter.com/LeoPedrouza/status/1526560576461234177



 https://twitter.com/emekavoces/status/1526556210291306496




the winds produced by Cyclone Yakecan brought sea foam in Uruguay and falls of poles and trees in Brazil. 1 dead in Uruguay and 1 missing in Brazil so far

 https://twitter.com/iserhard/status/1526581521716494338

[Sciencerocks]

[rodolfo alves]

Yakecan circulation along with cold air is causing snow now at night in some mountain towns in southern Brazil

 https://twitter.com/correio_dopovo/status/1526718080671531008

[jaguarjace]

[Sciencerocks]

The low level structure and convection pattern looks more sub-tropical. It is shallow but it is closer to namable.

[Sciencerocks]

[TheAustinMan]

Yakecan is now traversing a tongue of slightly warmer 23-24°C waters. These conditions, combined with low deep-layer wind shear and cold air aloft from the storm's position within an upper-level trough have allowed Yakecan to acquire organized deep convection. A prominent curved band has developed and the GOES lightning mapper has detected a few lightning strikes in the central convection. The HY-2B scatterometer indicated winds of about 40 kt at around 08:30 UTC, though the storm's wind field is lopsided due to its placement in a broad cyclonic gyre, with the strongest winds located to the northwest. Further intensification is possible in the coming days.

Source: WeatherNerds


Source: NASA Marshall Space Flight Center


Peak Gusts

• Florianópolis (Santa Catarina/Brazil), 51 mph
• Maldonado (Uruguay), 48 mph
• Porto Alegre (Rio Grande do Sul/Brazil), 45 mph
• Montevideo (Uruguay), 44 mph
• Pelotas (Rio Grande do Sul/Brazil), 39 mph
• Itajaí (Santa Catarina/Brazil), 37 mph

[cycloneye]

Looks good.

[jaguarjace]

SPECIAL WARNING
ISSUED AT 1330 Z - WED - 18/MAY/2022
SUBTROPICAL STORM "YAKECAN" WITH ESTIMATED CENTRAL PRESSURE OF 995 HPA AT 29S046.7W,
MOVING TO EAST/NORTHEAST AND AFTER TO SOUTHEAST WITH ESTIMATED MAXIMUM WINDS 45 KT
ON CYCLONE NORTHWEAST/NORTH SECTOR.
FORECAST: CYCLONIC WIND FORCE 8/10 (35-55 KNOTS) WITH GUSTS WITHIN 160 NM AROUND THE CENTER.
ROUGH/VERY ROUGH SEA ASSOCIATED.
ESTIMATED POSITION:
1900Z: 27.5S041W - 996 HPA - ESTIMATED MAXIMUM SUSTAINED WIND 40-50 KNOTS - SUBTROPICAL STORM
1912Z: 28.5S036W - 993 HPA - ESTIMATED MAXIMUM SUSTAINED WIND 40-50 KNOTS - SUBTROPICAL STORM
VALID UNTIL 191200Z.

Disclaimer: NOAA SSD no longer supports GOES Floaters. This product was manually generated by me.

[Sciencerocks]

[Hurricane2021]

Looks good.

https://i.imgur.com/qt41jIO.gif

45 - 50 kt looks a good estimate now

[Sciencerocks]

[Argcane]

What a beauty of a system tbh. We get one or two STs in the year down here but they don't look as good as Yakecan does

[Sciencerocks]