cycloneye wrote:
WTIO31 PGTW 220300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE WARNING//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/211351ZMAY2018//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. TROPICAL CYCLONE 02A (TWO) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
220000Z --- NEAR 9.1N 57.3E
MOVEMENT PAST SIX HOURS - 305 DEGREES AT 07 KTS
POSITION ACCURATE TO WITHIN 060 NM
POSITION BASED ON CENTER LOCATED BY SATELLITE
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 090 NM NORTHEAST QUADRANT
125 NM SOUTHEAST QUADRANT
095 NM SOUTHWEST QUADRANT
105 NM NORTHWEST QUADRANT
REPEAT POSIT: 9.1N 57.3E
---
FORECASTS:
12 HRS, VALID AT:
221200Z --- 9.8N 56.6E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT
155 NM SOUTHEAST QUADRANT
160 NM SOUTHWEST QUADRANT
125 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 350 DEG/ 06 KTS
---
24 HRS, VALID AT:
230000Z --- 10.9N 56.4E
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 025 NM NORTHEAST QUADRANT
055 NM SOUTHEAST QUADRANT
055 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 155 NM NORTHEAST QUADRANT
165 NM SOUTHEAST QUADRANT
175 NM SOUTHWEST QUADRANT
135 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 360 DEG/ 06 KTS
---
36 HRS, VALID AT:
231200Z --- 12.1N 56.4E
MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 010 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
010 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT
065 NM SOUTHEAST QUADRANT
065 NM SOUTHWEST QUADRANT
045 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 140 NM NORTHEAST QUADRANT
175 NM SOUTHEAST QUADRANT
155 NM SOUTHWEST QUADRANT
130 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 350 DEG/ 07 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
240000Z --- 13.5N 56.2E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 015 NM NORTHEAST QUADRANT
035 NM SOUTHEAST QUADRANT
035 NM SOUTHWEST QUADRANT
015 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 055 NM NORTHEAST QUADRANT
075 NM SOUTHEAST QUADRANT
070 NM SOUTHWEST QUADRANT
055 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 150 NM NORTHEAST QUADRANT
185 NM SOUTHEAST QUADRANT
185 NM SOUTHWEST QUADRANT
130 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 340 DEG/ 06 KTS
---
72 HRS, VALID AT:
250000Z --- 15.7N 55.3E
MAX SUSTAINED WINDS - 085 KT, GUSTS 105 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
055 NM SOUTHWEST QUADRANT
035 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 055 NM NORTHEAST QUADRANT
075 NM SOUTHEAST QUADRANT
075 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 155 NM NORTHEAST QUADRANT
220 NM SOUTHEAST QUADRANT
200 NM SOUTHWEST QUADRANT
125 NM NORTHWEST QUADRANT
VECTOR TO 96 HR POSIT: 330 DEG/ 05 KTS
---
LONG RANGE OUTLOOK:
---
96 HRS, VALID AT:
260000Z --- 17.4N 54.2E
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 110 NM NORTHEAST QUADRANT
175 NM SOUTHEAST QUADRANT
095 NM SOUTHWEST QUADRANT
075 NM NORTHWEST QUADRANT
VECTOR TO 120 HR POSIT: 310 DEG/ 04 KTS
---
120 HRS, VALID AT:
270000Z --- 18.5N 52.8E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
220300Z POSITION NEAR 9.3N 57.1E.
TROPICAL CYCLONE 02A (TWO), LOCATED APPROXIMATELY 684 NM SOUTH OF
MASIRAH ISLAND, HAS TRACKED NORTHWESTWARD AT 07 KNOTS OVER THE PAST
SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY REVEALS
PERSISTENT DEEP CONVECTIVE ACTIVITY, DISPLACED MAINLY TO THE WEST OF
A THE PARTIALLY EXPOSED LLCC. THE INITIAL POSITION IS PLACED WITH
MODERATE CONFIDENCE BASED ON AN ASSESSMENT OF THE OVERALL LOW LEVEL
CLOUD FEATURES AND A 212324Z SSMIS MICROWAVE IMAGE WITH A RELATIVELY
WELL DEFINED LLCC AND FORMATIVE CONVECTIVE BANDING IN THE WESTERN
QUADRANT. THE INITIAL INTENSITY IS SET AT 35 KNOTS, HEDGED SLIGHTLY
HIGHER THAN THE MULTI-AGENCY DVORAK CURRENT INTENSITY ESTIMATES T2.0
(30 KNOTS) FROM BOTH PGTW AND KNES. THE INTENSITY IS SET HIGHER THAN
THE DVORAK BASED ON ANALYSIS OF THE OVERALL STRUCTURE AND A PARTIAL
ASCAT PASS FROM 211730Z WHICH REVEALED 30-35 KNOT WINDS CONFINED TO
THE NORTHWESTERN QUADRANT OF THE SYSTEM, THOUGH ONLY 25-30 KNOTS IN
THE OTHER QUADRANTS. ENVIRONMENTAL ANALYSIS INDICATES THAT THE SYSTEM
IS SUPPORTED BY STRONG POLEWARD AND EQUATORWARD OUTFLOW, STRONGEST TO
THE NORTHWEST AND SOUTH, WITH SOME IMPINGEMENT ON THE OUTFLOW IN THE
NORTHEASTERN SIDE. VWS IN THE AREA IS LOW (10-15 KNOTS), WITH AN
UPPER-LEVEL ANTICYCLONE JUST TO THE NORTHEAST OF THE LLCC. SSTS IN
THE AREA ARE VERY WARM (31-32 CELSIUS) AND PROVIDE AMPLE SUPPORT FOR
INTENSIFICATION. THE SYSTEM IS CURRENTLY TRACKING NORTHWESTWARD ALONG
THE SOUTHWESTERN BOUNDARY OF A SUBTROPICAL RIDGE LOCATED TO THE
NORTHEAST. TC 02A IS FORECAST TO CONTINUE TRACKING WEST-NORTHWESTWARD
ALONG THE SOUTHWESTERN PERIPHERY OF THE GENERALLY NORTHWEST-SOUTHEAST
ORIENTED STEERING RIDGE LOCATED TO THE NORTHEAST THROUGH TAU 12. THE
STEERING RIDGE BEGINS TO WEAKEN, RETREAT TOWARDS THE EAST AND
REORIENT TO A MORE NORTH-SOUTH AXIS, ALLOWING TC 02A TO TRACK MORE
NORTHWARD AFTER THROUGH TAU 48. THE TRACK BECOMES MORE NORTHWESTWARD
BEYOND TAU 48 THROUGH THE END OF THE FORECAST AS THE SYSTEM TRACKS
TOWARDS A WEAKNESS BETWEEN THE STEERING RIDGE TO THE EAST IN THE
ARABIAN SEA AND ANOTHER STR EXTENSION OVER THE WESTERN PORTION OF THE
SAUDI PENINSULA. TC 02A IS FORECAST TO INTENSIFY STEADILY THROUGH TAU
72, WITH A SLIGHT DECREASE IN THE RATE OF INTENSIFICATION BETWEEN
TAUS 36 AND 48 DUE TO A REDUCTION IN THE OUTFLOW DURING THIS TIME
FRAME. OUTFLOW IMPROVES THEREAFTER AND TC 02A IS FORECAST TO REACH
PEAK INTENSITY NEAR TAU 72 AT 85 KNOTS BEFORE MAKING LANDFALL NEAR
SALALAH, OMAN AROUND TAU 90. SOME ADDITIONAL INTENSIFICATION IS
POSSIBLE JUST PRIOR TO LANDFALL BUT IS NOT CAPTURED IN THE FORECAST
TAUS. THE SYSTEM WILL RAPIDLY WEAKEN AFTER LANDFALL DUE TO A DRYING
OF THE ENVIRONMENT AND TERRAIN INTERACTION, REACHING ONLY 35 KNOTS BY
TAU 120. AVAILABLE MODEL GUIDANCE IS IN FAIRLY POOR AGREEMENT, THOUGH
ALL AGREE ON THE GENERAL NORTHWARD TRACK. ECMWF AND BOTH THE GFS AND
ECMWF ENSEMBLES DELINEATE THE WESTERNMOST OUTLIERS, TAKING THE SYSTEM
INTO EASTERN YEMEN. THE GALWEM AND COAMPS MODELS ARE THE EASTERN
OUTLIERS, TAKING THE SYSTEM INLAND NEAR DUQM, OMAN. THE REMAINDER OF
THE CONSENSUS MODELS ARE TIGHTLY PACKED BETWEEN THE OUTLIERS. THE
JTWC FORECAST TRACK LIES WEST OF THE CONSENSUS TRACK, BUT WITHIN THE
DENSE CLUSTERING OF THE GUIDANCE. THE OVERALL UNCERTAINTY IN THE
MODEL GUIDANCE AND INCREASING BIFURCATION IN THE LATER TAUS LENDS LOW
CONFIDENCE TO THE JTWC FORECAST. THIS CANCELS AND SUPERSEDES REF A
(WTIO21 PGTW 211400).//
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