WPAC: YUTU - Tropical Storm

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WPAC: YUTU - Tropical Storm

#1 Postby Hurricane_Luis » Sat Aug 31, 2013 5:42 am

East of the dateline. Looks more subtropical than tropical

Invest 95W, 28.5N, 172.3E, 15 knots, 1006 mbr

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Re: WPAC: INVEST 95W

#2 Postby supercane4867 » Sat Aug 31, 2013 8:54 pm

** WTPQ21 RJTD 010000 ***
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 1316 YUTU (1316) UPGRADED FROM TD
ANALYSIS
PSTN 010000UTC 32.5N 176.2E FAIR
MOVE NE 06KT
PRES 1002HPA
MXWD 035KT
GUST 050KT
30KT 210NM SOUTHEAST 120NM NORTHWEST
FORECAST
24HF 020000UTC 33.2N 177.7E 85NM 70%
MOVE ENE SLOWLY
PRES 1000HPA
MXWD 035KT
GUST 050KT
48HF 030000UTC 33.7N 179.2E 160NM 70%
MOVE ENE SLOWLY
PRES 1000HPA
MXWD 035KT
GUST 050KT
72HF 040000UTC 33.6N 178.8W 220NM 70%
MOVE E SLOWLY
PRES 1000HPA
MXWD 035KT
GUST 050KT =
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Re: WPAC: INVEST 95W

#3 Postby supercane4867 » Sat Aug 31, 2013 8:57 pm

Could enter CPAC as a TS according to the forecast, something rarely happens

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Re: WPAC: INVEST 95W

#4 Postby jaguarjace » Sun Sep 01, 2013 12:02 am

Strangely no close-up floater for Yutu and the invest for Yutu has been deactivated on NRL website.

Saved loop of Yutu.
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#5 Postby xtyphooncyclonex » Sun Sep 01, 2013 1:00 am

Isn't this from the remnants of Pewa? It was at the same location.
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#6 Postby Spin » Sun Sep 01, 2013 9:14 am

Pewa was further west than this invest, and IIRC was absorbed into an upper-level low.
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Re: WPAC: YUTU - Tropical Storm

#7 Postby euro6208 » Sun Sep 01, 2013 10:50 am

:cry: great name used for a worthless looking Tropical storm...
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Re: WPAC: YUTU - Tropical Storm

#8 Postby Hurricane_Luis » Sun Sep 01, 2013 2:26 pm

euro6208 wrote::cry: great name used for a worthless looking Tropical storm...


Agree. No floater. No Satellite images on the NRL or RAMMB pages. :roll:
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Re: WPAC: YUTU - Tropical Storm

#9 Postby supercane4867 » Sun Sep 01, 2013 2:36 pm

NWS surface analysis keeps it as a frontal system, has never shown a TC

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#10 Postby HURAKAN » Sun Sep 01, 2013 10:13 pm

Image

YUTU
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Re:

#11 Postby supercane4867 » Sun Sep 01, 2013 10:32 pm

HURAKAN wrote:http://www.nrlmry.navy.mil/tcdat/tc13/WPAC/97W.INVEST/vis/geo/1km/20130902.0230.goes15.x.vis1km.97WINVEST.25kts-1004mb-332N-1771E.100pc.jpg

YUTU

91L from last December looks better than that

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Re: WPAC: YUTU - Tropical Storm

#12 Postby euro6208 » Mon Sep 02, 2013 12:17 am

A CIRCULATION HAS PERSISTED NEAR 33.3N 177.0E,
APPROXIMATELY 425 NM NORTHWEST OF MIDWAY ISLAND. ANIMATED
MULTISPECTRAL SATELLITE IMAGERY DEPICTS A BROAD, WELL DEFINED
CIRCULATION WITH NO CENTRAL CONVECTION AND SHALLOW CONVECTION IN THE
NORTHWESTERN AND SOUTHEASTERN PERIPHERIES. THE CIMSS TOTAL
PRECIPITABLE WATER LOOP ALONG WITH A 011525Z SSMI 85GHZ MICROWAVE
IMAGE SHOWS A WELL DEFINED CIRCULATION WITH DRY AIR WRAPPING IN FROM
THE NORTHWEST AND NO CENTRAL CONVECTION. UPPER LEVEL ANALYSIS
REVEALS THE SYSTEM IS UNDER AN AREA OF UPPER LEVEL TROUGHING WITH
STRONG (30-40 KNOTS) VERTICAL WIND SHEAR. SEA SURFACE TEMPERATURES
IN THE AREA ARE NOT CONDUCIVE (25 TO 26 DEGREES CELSIUS) FOR
DEVELOPMENT. BASED ON THIS DATA, THIS SYSTEM IS SUBTROPICAL. MAXIMUM
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003 MB. THE POTENTIAL FOR
THIS SUBTROPICAL SYSTEM TO DEVELOP INTO A SIGNIFICANT TROPICAL
CYCLONE WITHIN THE NEXT 24 HOURS IS LOW.
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Re: WPAC: YUTU - Tropical Storm

#13 Postby euro6208 » Mon Sep 02, 2013 10:34 am

THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 33.3N
177.0E, IS NOW LOCATED NEAR 33.2N 177.1E, APPROXIMATELY 409 NM
NORTHWEST OF MIDWAY ISLAND. ANIMATED MULTISPECTRAL SATELLITE IMAGERY
DEPICTS A BROAD, WELL DEFINED CIRCULATION WITH NO CENTRAL CONVECTION
AND SHALLOW CONVECTION IN THE NORTHWESTERN AND SOUTHEASTERN
PERIPHERIES. THE CIMSS TOTAL PRECIPITABLE WATER LOOP ALONG WITH A
020246Z SSMI 85GHZ MICROWAVE IMAGE SHOWS A WELL DEFINED CIRCULATION
WITH DRY AIR WRAPPING IN FROM THE NORTHWEST AND NO CENTRAL
CONVECTION. UPPER LEVEL ANALYSIS REVEALS THE SYSTEM IS UNDER AN AREA
OF UPPER LEVEL TROUGHING WITH STRONG (30-40 KNOTS) VERTICAL WIND
SHEAR. SEA SURFACE TEMPERATURES IN THE AREA ARE NOT CONDUCIVE (25 TO
26 DEGREES CELSIUS) FOR DEVELOPMENT. BASED ON THIS DATA, THIS SYSTEM
IS SUBTROPICAL. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20
TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003
MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL
CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW.
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Re: WPAC: YUTU - Tropical Storm

#14 Postby dexterlabio » Mon Sep 02, 2013 11:40 am

JMA loves naked tropical systems, don't they...
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Re: WPAC: YUTU - Tropical Storm

#15 Postby euro6208 » Mon Sep 02, 2013 12:08 pm

dexterlabio wrote:JMA loves naked tropical systems, don't they...


NO data to even support a tropical storm...Dvorak shows nothing...was likely a frontal or subtropical system...
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Re: WPAC: YUTU - Tropical Storm

#16 Postby Hurricane_Luis » Mon Sep 02, 2013 4:37 pm

euro6208 wrote:
dexterlabio wrote:JMA loves naked tropical systems, don't they...


NO data to even support a tropical storm...Dvorak shows nothing...was likely a frontal or subtropical system...


On that note, This is Subtropical Low Level Circulation Yutu, (or Invest 97W). :D

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Meow

#17 Postby Meow » Mon Sep 02, 2013 11:39 pm

JMA often takes subtropical systems as tropical systems. There were many cases.
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Re: WPAC: YUTU - Tropical Storm

#18 Postby euro6208 » Tue Sep 03, 2013 6:19 pm

THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 33.2N
177.1E, IS NOW LOCATED NEAR 32.3N 177.0E, APPROXIMATELY 375 NM
NORTHWEST OF MIDWAY ISLAND. ANIMATED MULTISPECTRAL SATELLITE IMAGERY
DEPICTS A BROAD, WELL DEFINED CIRCULATION WITH NO DEEP CENTRAL
CONVECTION AND SHALLOW CONVECTION SHEARING FROM THE SOUTHEASTERN
PERIPHERY. THE CIMSS TOTAL PRECIPITABLE WATER LOOP SHOWS A WELL
DEFINED CIRCULATION WITH DRY AIR ALONG THE NORTHWESTERN QUADRANT.
UPPER LEVEL ANALYSIS REVEALS THE SYSTEM IS UNDER AN AREA OF UPPER
LEVEL TROUGHING WITH STRONG (30-40 KNOTS) VERTICAL WIND SHEAR. SEA
SURFACE TEMPERATURES IN THE AREA ARE NOT CONDUCIVE (26 DEGREES
CELSIUS) FOR DEVELOPMENT. BASED ON THIS DATA, THIS SYSTEM REMAINS A
SUBTROPICAL LOW. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20
TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003
MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL
CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW.


West Pacific
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97W.INVEST
15W.TORAJI
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#19 Postby HURAKAN » Tue Sep 03, 2013 10:55 pm

Image

center filled with stratocumulus!
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Re: WPAC: YUTU - Tropical Storm

#20 Postby euro6208 » Wed Sep 04, 2013 12:01 pm

THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 32.3N
177.0E, IS NOW LOCATED NEAR 31.9N 175.7E, APPROXIMATELY 420 NM WEST-
NORTHWEST OF MIDWAY ISLAND. ANIMATED MULTISPECTRAL SATELLITE IMAGERY
DEPICTS A BROAD, WELL DEFINED CIRCULATION LOCATED ON THE
SOUTHWESTERN EXTENT OF A MID-LATITUDE SHEARLINE WITH NO DEEP CENTRAL
CONVECTION OVER THE PAST 24 HOURS. A RECENT ASCAT PASS MISSED THE
CENTRAL CIRCULATION BUT INDICATES WINDS WITHIN THE WESTERN HALF OF
THE SYSTEM ARE BETWEEN 20 TO 25 KNOTS. THE CIMSS TOTAL PRECIPITABLE
WATER LOOP SHOWS A SLIGHT ELONGATION OF THE CIRCULATION WITH A BAND
OF DRIER AIR BEGINNING TO WRAP TOWARD THE CENTER FROM THE
NORTHWESTERN QUADRANT. UPPER LEVEL ANALYSIS REVEALS THE SYSTEM IS
UNDER AN AREA OF UPPER LEVEL TROUGHING WITH MODERATE (20-30 KNOTS)
VERTICAL WIND SHEAR. SEA SURFACE TEMPERATURES IN THE AREA ARE
IMPROVING, CURRENTLY 27 DEGREES CELSIUS, AS THE CIRCULATION SLOWLY
MOVES SOUTHWARD. BASED ON THE ELONGATION AND DRY AIR ENTRAINMENT,
THIS SYSTEM REMAINS A SUBTROPICAL LOW. MAXIMUM SUSTAINED SURFACE
WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
ESTIMATED TO BE NEAR 1003 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW.
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