WTPN32 PGTW 142100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 22W (SONCA) WARNING NR 004//
RMKS/
1. TROPICAL STORM 22W (SONCA) WARNING NR 004    
   03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   141800Z --- NEAR 15.3N 108.9E
     MOVEMENT PAST SIX HOURS - 295 DEGREES AT 17 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF 
     SATELLITE AND RADAR
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   RADIUS OF 034 KT WINDS - 055 NM NORTHEAST QUADRANT
                            050 NM SOUTHEAST QUADRANT
                            000 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   REPEAT POSIT: 15.3N 108.9E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   150600Z --- 15.1N 106.3E
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 24 HR POSIT: 255 DEG/ 12 KTS
    ---
   24 HRS, VALID AT:
   151800Z --- 14.4N 103.9E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    ---
REMARKS:
142100Z POSITION NEAR 15.3N 108.3E.
14OCT22. TROPICAL STORM 22W (SONCA), LOCATED APPROXIMATELY 54 NM
SOUTHEAST OF DA NANG, VIETNAM, HAS TRACKED WEST-NORTHWESTWARD AT
17 KNOTS OVER THE PAST SIX HOURS. SATELLITE AND RADAR ANALYSIS
REVEALS THAT TROPICAL STORM 22W (SONCA) HAS MADE LANDFALL
SOUTHEAST OF DA NANG, VIETNAM. ANIMATED ENHANCED INFRARED
SATELLITE IMAGERY SHOWS AN AREA OF FLARING CONVECTION COVERING
EASTERN THAILAND, SOUTHERN LAOS, AND CENTRAL VIETNAM WEST OF A
LOW LEVEL CIRCULATION CENTER (LLCC). THIS DISPLACEMENT IS CAUSED
BY STRONG (45-50 KTS) UPPER LEVEL WIND FLOW FROM THE EAST-
NORTHEAST. A PARTIAL 141347Z ASCAT-B PASS SHOWS THE LLCC JUST
EAST OF THE VIETNAM SHORE WITH 30 KT WIND BARBS IN THE NORTHERN
PERIPHERY AND 25 KT WIND BARBS IN THE SOUTHERN PERIPHERY. THE
141830Z OBSERVATION FROM DA NANG REPORTED 19 KTS WITH GUSTS OF
31 KTS. THE INITIAL INTENSITY IS SET WITH BASED OF THE WINDS
OVER WATER INDICATED BY THE AFOREMENTIONED ASCAT PASS AND THE
PREVIOUS PGTW DVORAK ESTIMATE OF 1.5. TS SONCA WILL WEAKEN IN
INTENSITY AS IT TRANSITS WEST-NORTHWESTWARD OVER THE
MOUNTAINOUS TERRAIN OF VIETNAM AND LAOS. THIS IS THE FINAL
WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WRNCEN PEARL
HARBOR HI. THE SYSTEM WILL BE CLOSELY MONITORED FOR
SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 141800Z
IS 10 FEET. REFER TO TROPICAL STORM 21W (TWENTYONE) WARNINGS
(WTPN31 PGTW) FOR SIX-HOURLY UPDATES. REFER TO TROPICAL CYCLONE
23W (TWENTYTHREE) WARNINGS (WTPN33 PGTW) FOR SIX-HOURLY UPDATES.
//
NNNN