WPAC: Tropical Depression 90W

[Meow]

East of Iō-tō. It was originally an exposed LLCC of 99W.

[Meow]

This is interesting. 90W is better organised than 99W, but both the JMA and the ECMWF estimated that 99W will develop.

[euro6208]

THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 27.0N
146.1E, IS NOW LOCATED NEAR 28.0N 147.4E, APPROXIMATELY 375 NM
EAST-NORTHEAST OF IWO-TO, JAPAN. A 12-HOUR ANIMATED MULTISPECTRAL
SATELLITE IMAGERY SHOWS FLARING CONVECTION WITH SOME BANDING FROM THE
SOUTHWEST QUADRANT. HOWEVER, THE LAST SIX HOURS SHOWED SIGNS OF
FRAGMENTATION AND ELONGATION. THE SAME ANIMATION ALSO SHOWS A DIRECT
CYCLONE INTERACTION (DCI) WITH ANOTHER SYSTEM APPROXIMATELY 220 NM TO
THE WEST-NORTHWEST. THE DCI HAS ALTERED BOTH CYCLONE'S TRACK
RESULTING IN A CYCLONIC MOTION AROUND EACH OTHER. DCI GUIDANCE
DICTATES THAT ONE CYCLONE WILL DEVELOP AT THE EXPENSE OF THE OTHER.
AT THIS STAGE, IT APPEARS THAT THIS CYCLONE HAS AN EDGE AS THE OTHER
CYCLONE IS FULLY EXPOSED AND APPEARS TO BE UNRAVELING. MAXIMUM
SUSTAINED SURFACE WINDS FOR THIS SYSTEM ARE ESTIMATED AT 15 TO 20
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1007 MB.
BASED ON THE SUSTAINED ENVIRONMENTAL CONDITIONS, THE POTENTIAL FOR
THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24
HOURS REMAINS MEDIUM.

[Meow]

90W won.

WARNING.
TROPICAL DEPRESSION 1008 HPA
AT 34.6N 145.1E SEA EAST OF JAPAN MOVING NORTHWEST 10 KNOTS.
POSITION POOR.
MAX WINDS 30 KNOTS NEAR CENTER.

[euro6208]

although this wasn't upgraded to a tropical cyclone (1 min), i believe it did...it had enough sufficient organization and convection bandings to be considered one.....sad that we have to rely on dvorak....


THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 28.0N
147.4E, IS NOW LOCATED NEAR 33.5N 145.6E, APPROXIMATELY 315 NM
EAST-SOUTHEAST OF TOKYO, JAPAN. ANIMATED MULTISPECTRAL SATELLITE
IMAGERY SHOWS THE CENTRAL DENSE OVERCAST ASSOCIATED WITH THE SYSTEM
IS DISPLACED NORTHEAST OF THE LOW LEVEL CIRCULATION CENTER (LLCC),
INDICATIVE OF STRONG SOUTHWESTERLY VERTICAL WIND SHEAR. THE SYSTEM
HAS TRACKED IN A CIRCULAR NORTHWESTWARD MOTION IN RESPONSE TO ANOTHER
CYCLONE TO ITS WEST THAT HAS SINCE DISSIPATED. THE SAME ANIMATION
DEPICTS THE SYSTEM IS TRANSITIONING INTO A BAROCLINIC LOW AS
EVIDENCED BY COLD AIR STRATOCUMULUS CLOUDS WRAPPING IN FROM THE
NORTHWEST INTO A COLD FRONT EXTENDING SOUTHWARD FROM THE LLCC. A WARM
FRONT ALSO EXTENDS EASTWARD FROM THE LLCC. THE AMSU RADIAL/HEIGHT
CROSS SECTION FROM CIRA INDICATES A COOLING OF THE CYCLONE'S CORE
DOWN TO A MERE 5 DEGREES CELSIUS. DESPITE THIS APPARENT
EXTRA-TROPICAL TRANSITION, THE SYSTEM REMAINS IN A WARM POOL OF WATER
AND THERE IS A POSSIBILITY OF A CONTINUED EQUATORWARD LOOPING MOTION.
IN VIEW OF THIS, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT
TROPICAL CYCLONE OVER THE NEXT 24 HOURS REMAINS AT A MEDIUM.

[Meow]

although this wasn't upgraded to a tropical cyclone (1 min), i believe it did...it had enough sufficient organization and convection bandings to be considered one.....sad that we have to rely on dvorak....

Pay more attention on the JMA please. It has already issued a warning on the tropical depression.

[euro6208]

although this wasn't upgraded to a tropical cyclone (1 min), i believe it did...it had enough sufficient organization and convection bandings to be considered one.....sad that we have to rely on dvorak....

Pay more attention on the JMA please. It has already issued a warning on the tropical depression.

i was referring to 1 min..