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Tropical Storm DANAS Situation Map

Tropical Cyclone Formation

Tropical Cyclone Genesis is the technical term for the process of storm formation that leads ultimately to what are called hurricanes, typhoons, or tropical cyclones in various parts of the world.

This occurs when, in the Northern Hemisphere, the Intertropical Convergence Zone, or ITCZ, shifts northward out of the doldrums and atmospheric conditions become favorable for tropical cyclone formation after about the middle of May.

A series of low-pressure ripples develops within the ITCZ. These are known as tropical waves and progress from east to west. In the late season, they typically shift their movement toward the west-nothwest, or even northwest, after crossing 45° or 50° W longitude. Full Article

Tropical Storm DANAS Forecast Graphic
Tropical Storm DANAS Forecast Track (Joint Typhoon Warning Center)
Tropical Storm DANAS Storm-Centered Infrared
Tropical Storm DANAS Storm-Centered Enhanced Infrared
Tropical Storm DANAS Storm-Centered Visible
Tropical Storm DANAS Warning Text (JTWC)
WTPN31 PGTW 192100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL STORM 06W (DANAS) WARNING NR 015    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   191800Z --- NEAR 32.9N 125.7E
     MOVEMENT PAST SIX HOURS - 030 DEGREES AT 14 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT
                            185 NM SOUTHEAST QUADRANT
                            100 NM SOUTHWEST QUADRANT
                            090 NM NORTHWEST QUADRANT
   REPEAT POSIT: 32.9N 125.7E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   200600Z --- 35.3N 126.5E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
                            180 NM SOUTHEAST QUADRANT
                            025 NM SOUTHWEST QUADRANT
                            030 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 025 DEG/ 12 KTS
    ---
   24 HRS, VALID AT:
   201800Z --- 37.4N 127.8E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 36 HR POSIT: 030 DEG/ 15 KTS
    ---
   36 HRS, VALID AT:
   210600Z --- 39.9N 129.8E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
192100Z POSITION NEAR 33.5N 125.9E.
19JUL19. TROPICAL STORM 06W (DANAS), LOCATED APPROXIMATELY 185 NM
SOUTH-SOUTHWEST OF KUNSAN AB, HAS TRACKED NORTH-NORTHEASTWARD AT
14 KNOTS OVER THE PAST SIX HOURS.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 191800Z IS 20 FEET. NEXT
WARNINGS AT 200300Z, 200900Z, 201500Z AND 202100Z.
//
NNNN
Tropical Storm DANAS Prognostic Reasoning (JTWC)
WDPN31 PGTW 192100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/PROGNOSTIC REASONING FOR TROPICAL STORM 06W (DANAS) WARNING NR 
15//
RMKS//
1. FOR METEOROLOGISTS.
2. 6 HOUR SUMMARY AND ANALYSIS.
   TROPICAL STORM 06W (DANAS), LOCATED APPROXIMATELY 185 NM
SOUTH-SOUTHWEST OF KUNSAN AB, HAS TRACKED NORTH-NORTHEASTWARD AT 14
KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE
IMAGERY DEPICTS A BROAD LOW-LEVEL CIRCULATION (LLC) WITH DEEP
CONVECTIVE BANDING CONFINED TO THE EASTERN SEMICIRCLE. A 191753Z ATMS
89GHZ MICROWAVE IMAGE DEPICTS SHALLOW BANDING WRAPPING INTO A BROAD,
DEFINED CENTER WITH A CURVED DEEP CONVECTIVE BAND OVER THE EASTERN
SEMICIRCLE. THE INITIAL INTENSITY IS ASSESSED AT 40 KNOTS, HEDGED
BETWEEN THE 191703Z SATCON ESTIMATE OF 47 KNOTS, 191940Z ADT ESTIMATE
OF 28 KNOTS AND MULTIPLE AGENCY DVORAK ESTIMATES OF T2.0 (30 KNOTS).
OVERALL, THERE IS GOOD CONFIDENCE IN THE INITIAL POSITION BASED ON A
191807Z AMSR2 36GHZ MICROWAVE IMAGE. THE RADIUS OF MAX WINDS
CONTINUES TO BROADEN BASED ON A 191327Z METOP-B ASCAT PASS SHOWING
30-35 KNOT WINDS SEPARATING FROM THE CENTER IN THE WESTERN
SEMI-CIRCLE. ADDITIONALLY, A 191253Z METOP-C ASCAT PASS SHOWS AN
ASYMMETRIC FIELD OF GALE FORCE WINDS STRETCHING SOUTH IN THE EASTERN
SEMI-CIRCLE FUELING THE PERSISTENT HEAVY CONVECTION. THE WIND RADII
FORECAST IS BASED ON THE MULTI-MODEL WIND RADII CONSENSUS (RVCN) AND
REFLECTS THE EXTENSIVE SOUTHERLY GALE-FORCE WINDS. TS 06W IS TRACKING
POLEWARD ALONG THE WESTERN PERIPHERY OF A SUBTROPICAL RIDGE (STR)
ENTRENCHED TO THE EAST.
3. FORECAST REASONING.
   A. THERE IS NO CHANGE TO THE FORECAST PHILOSOPHY SINCE THE 
PREVIOUS PROGNOSTIC REASONING MESSAGE.
   B. TS 06W IS FORECAST TO TRACK NORTH-NORTHEASTWARD AS IT ROUNDS
THE NORTHWEST PERIPHERY OF THE STR. NUMERICAL MODEL GUIDANCE REMAINS
IN GOOD AGREEMENT WITH A SPREAD OF 70NM AT TAU 24, THEREFORE, THERE
IS HIGH CONFIDENCE IN THE JTWC FORECAST TRACK ALTHOUGH THERE IS STILL
SOME UNCERTAINTY IN THE EXACT LANDFALL LOCATION DUE TO THE BROAD
NATURE OF THE CENTER. AS TS 06W APPROACHES THE SOUTHWEST COAST OF
SOUTH KOREA NEAR TAU 12, IT IS FORECAST TO WEAKEN DUE TO FRICTIONAL
EFFECTS WITH SIGNIFICANT WEAKENING FORECAST AFTER TAU 12 AS IT TRACKS
ACROSS MOUNTAINOUS TERRAIN. THE SYSTEM SHOULD DISSIPATE COMPLETELY BY
TAU 36.//
NNNN
Tropical Storm DANAS JMV 3.0 Data (JTWC)
WTPN51 PGTW 192100    
WARNING    ATCG MIL 06W NWP 190719195505
2019071918 06W DANAS      015  01 030 14 SATL 060
T000 329N 1257E 040 R034 175 NE QD 185 SE QD 100 SW QD 090 NW QD 
T012 353N 1265E 035 R034 190 NE QD 180 SE QD 025 SW QD 030 NW QD 
T024 374N 1278E 030 
T036 399N 1298E 020 
AMP
    024HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    036HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
SUBJ:  TROPICAL STORM 06W (DANAS) WARNING NR 015    
1. TROPICAL STORM 06W (DANAS) WARNING NR 015    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   191800Z --- NEAR 32.9N 125.7E
     MOVEMENT PAST SIX HOURS - 030 DEGREES AT 14 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 175 NM NORTHEAST QUADRANT
                            185 NM SOUTHEAST QUADRANT
                            100 NM SOUTHWEST QUADRANT
                            090 NM NORTHWEST QUADRANT
   REPEAT POSIT: 32.9N 125.7E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   200600Z --- 35.3N 126.5E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
                            180 NM SOUTHEAST QUADRANT
                            025 NM SOUTHWEST QUADRANT
                            030 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 025 DEG/ 12 KTS
    ---
   24 HRS, VALID AT:
   201800Z --- 37.4N 127.8E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 36 HR POSIT: 030 DEG/ 15 KTS
    ---
   36 HRS, VALID AT:
   210600Z --- 39.9N 129.8E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
192100Z POSITION NEAR 33.5N 125.9E.
19JUL19. TROPICAL STORM 06W (DANAS), LOCATED APPROXIMATELY 185 NM
SOUTH-SOUTHWEST OF KUNSAN AB, HAS TRACKED NORTH-NORTHEASTWARD AT
14 KNOTS OVER THE PAST SIX HOURS.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 191800Z IS 20 FEET. NEXT
WARNINGS AT 200300Z, 200900Z, 201500Z AND 202100Z.
//
0619071106  62N1444E  15
0619071112  62N1431E  15
0619071118  64N1421E  15
0619071200  66N1414E  15
0619071206  71N1406E  15
0619071212  76N1400E  15
0619071218  81N1393E  15
0619071300  89N1383E  15
0619071306  97N1376E  15
0619071312 103N1369E  15
0619071318 116N1363E  15
0619071400 126N1360E  15
0619071406 141N1356E  15
0619071412 152N1351E  15
0619071418 158N1340E  20
0619071500 160N1329E  20
0619071506 168N1305E  20
0619071512 169N1290E  20
0619071518 170N1276E  20
0619071600 167N1265E  20
0619071606 170N1251E  25
0619071612 172N1237E  30
0619071618 173N1235E  35
0619071700 181N1235E  35
0619071706 190N1237E  35
0619071712 204N1240E  35
0619071718 223N1242E  35
0619071800 241N1242E  35
0619071806 257N1239E  40
0619071812 269N1238E  40
0619071818 280N1238E  40
0619071900 290N1240E  40
0619071906 302N1243E  45
0619071912 317N1249E  45
0619071918 329N1257E  40
NNNN

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