簽到天數: 3291 天 [LV.Master]伴壇終老
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t02436|2015-1-10 21:58
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BoM編號07U
首報暫時上望澳式C2
IDQ20018
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - EASTERN REGION
Issued by BRISBANE TROPICAL CYCLONE WARNING CENTRE
at: 1247 UTC 10/01/2015
Name: Tropical Low
Identifier: 07U
Data At: 1200 UTC
Latitude: 11.6S
Longitude: 159.4E
Location Accuracy: within 30 nm [55 km]
Movement Towards: south [169 deg]
Speed of Movement: 3 knots [5 km/h]
Maximum 10-Minute Wind: 30 knots [55 km/h]
Maximum 3-Second Wind Gust: 45 knots [85 km/h]
Central Pressure: 998 hPa
Radius of 34-knot winds NE quadrant:
Radius of 34-knot winds SE quadrant:
Radius of 34-knot winds SW quadrant:
Radius of 34-knot winds NW quadrant:
Radius of 48-knot winds NE quadrant:
Radius of 48-knot winds SE quadrant:
Radius of 48-knot winds SW quadrant:
Radius of 48-knot winds NW quadrant:
Radius of 64-knot winds:
Radius of Maximum Winds:
Dvorak Intensity Code: 2.5/2.5/D0.0/6HRS
Pressure of outermost isobar: 1004 hPa
Radius of outermost closed isobar: 110 nm [205 km]
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+06: 10/1800: 12.0S 159.6E: 030 [060]: 035 [065]: 996
+12: 11/0000: 12.7S 159.6E: 045 [080]: 040 [075]: 993
+18: 11/0600: 13.4S 159.6E: 055 [105]: 045 [085]: 991
+24: 11/1200: 14.2S 159.7E: 070 [130]: 050 [090]: 988
+36: 12/0000: 16.0S 160.5E: 090 [165]: 055 [100]: 985
+48: 12/1200: 17.8S 162.6E: 110 [200]: 055 [100]: 985
+60: 13/0000: 19.3S 165.9E: 130 [235]: 055 [100]: 984
+72: 13/1200: 20.7S 169.3E: 145 [270]: 055 [100]: 984
REMARKS:
During the afternoon period the deep convection was rather limited in extent,
but was nonetheless within about 20nm of the low level centre evident on the
visible imagery. Held the T to 2.5 during the afternoon using the Dvorak 1995
discression for shear patterns based on limited convection strength and extent.
The latest image shows more substantial convection now near the probable centre,
in line with our overnight intensification forecast, however it's only the first
image, so we'll hold at 2.5 yet reiterate the policy is for possible TC genesis
within 6 hours. Two channel outflow to NW and SE as the system lies flanked by
an upper trough to the south and monsoon return flow to the north. Very high
SST [-30C]. Shear moderate and forecast to remain that way for 24-36 hours,
then increasing as the system perhaps gets more of a baroclinic structure.
Copyright Commonwealth of Australia
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The next bulletin for this system will be issued by: 10/1900 UTC by Brisbane
TCWC.
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