1981 Moderate Tropical Storm HELYETTE (1981028S12069)


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Storm track - Intensity - Wind Radii - Intensity Data - Source Data - All data

Summary Information

Storm ID 1981028S12069
Start Jan 28 00Z
Landfall Feb 1 03Z, Feb 3 06Z
Max Intensity 45 kt (Jan 30 00Z)
End Feb 6 06Z
ATCF IDs ,SH131981
Track status Best track data.

Storm track plot

Map of storm track

Intensity plots

Map of storm track

Radial wind information

No radial wind information for this storm


Position and Intensity Table

BASIN ISO_TIME_________ NATURE LAT LON USA WIND TD9636 WIND NEUMANN WIND
degrees north degrees east kts kts kts
SI 1981-01-28 00:00:00 TS -11.70 69.00 20 20 20
SI 03:00:00 TS -11.90 69.04 20 21 20
SI 06:00:00 TS -12.11 69.09 20 22 20
SI 09:00:00 TS -12.34 69.13 22 23 22
SI 12:00:00 TS -12.60 69.20 25 25 25
SI 15:00:00 TS -12.89 69.30 25 26 25
SI 18:00:00 TS -13.19 69.41 25 27 25
SI 21:00:00 TS -13.49 69.52 27 28 27
SI 1981-01-29 00:00:00 TS -13.80 69.60 30 30 30
SI 03:00:00 TS -14.10 69.62 30 31 30
SI 06:00:00 TS -14.43 69.56 30 32 30
SI 09:00:00 TS -14.77 69.44 32 33 32
SI 12:00:00 TS -15.14 69.30 35 35 35
SI 15:00:00 TS -15.54 69.20 37 37 37
SI 18:00:00 TS -15.96 69.09 40 40 40
SI 21:00:00 TS -16.39 68.90 42 42 42
SI 1981-01-30 00:00:00 TS -16.82 68.62 45 45 45
SI 03:00:00 TS -17.25 68.28 45 45 45
SI 06:00:00 TS -17.62 67.85 45 45 45
SI 09:00:00 TS -17.92 67.33 45 45 45
SI 12:00:00 TS -18.15 66.77 45 45 45
SI 15:00:00 TS -18.35 66.27 42 42 42
SI 18:00:00 TS -18.51 65.74 40 40 40
SI 21:00:00 TS -18.65 65.16 37 37 37
SI 1981-01-31 00:00:00 TS -18.77 64.53 35 35 35
SI 03:00:00 TS -18.92 63.87 32 33 32
SI 06:00:00 TS -19.06 63.15 30 32 30
SI 09:00:00 TS -19.21 62.35 30 31 30
SI 12:00:00 TS -19.35 61.52 30 30 30
SI 15:00:00 TS -19.48 60.73 30 30 30
SI 18:00:00 TS -19.63 59.93 30 30 30
SI 21:00:00 TS -19.86 59.13 30 30 30
SI 1981-02-01 00:00:00 TS -20.12 58.35 30 30 30
SI 03:00:00 TS -20.40 57.65 30 30 30
SI 06:00:00 TS -20.69 57.02 30 30 30
SI 09:00:00 TS -20.96 56.49 30 30 30
SI 12:00:00 TS -21.27 55.93 30 30 30
SI 15:00:00 TS -21.71 55.14 30 31 30
SI 18:00:00 TS -22.22 54.28 30 32 30
SI 21:00:00 TS -22.74 53.41 32 33 32
SI 1981-02-02 00:00:00 TS -23.22 52.62 35 35 35
SI 03:00:00 TS -23.61 52.06 35 35 35
SI 06:00:00 TS -23.87 51.60 35 35 35
SI 09:00:00 TS -24.00 51.15 35 35 35
SI 12:00:00 TS -24.03 50.68 35 35 35
SI 15:00:00 TS -24.02 50.13 35 36 35
SI 18:00:00 TS -23.97 49.57 35 37 35
SI 21:00:00 TS -23.91 49.05 37 38 37
SI 1981-02-03 00:00:00 TS -23.85 48.45 40 40 40
SI 03:00:00 TS -23.78 47.62 40 40 35
SI 06:00:00 TS -23.76 46.75 40 40 30
SI 09:00:00 TS -23.86 45.96 40 40 27
SI 12:00:00 TS -24.05 45.30 40 40 25
SI 15:00:00 TS -24.27 44.85 37 36 25
SI 18:00:00 TS -24.52 44.48 35 32 25
SI 21:00:00 TS -24.74 44.05 30 28 25
SI 1981-02-04 00:00:00 TS -24.98 43.62 25 25 25
SI 03:00:00 TS -25.24 43.23 22 23 22
SI 06:00:00 MX -25.57 42.83 20 22 20
SI 09:00:00 MX -25.95 42.35 20 21 20
SI 12:00:00 TS -26.46 41.89 20 20 20
SI 15:00:00 NR -27.28 41.60
SI 18:00:00 NR -27.80 41.80
SI 21:00:00 NR -28.44 42.43
SI 1981-02-05 00:00:00 NR -29.00 43.40
SI 03:00:00 NR -29.31 44.52
SI 06:00:00 TS -29.50 45.60
SI 09:00:00 TS -29.68 46.36
SI 12:00:00 NR -29.90 47.00
SI 15:00:00 NR -30.22 47.69
SI 18:00:00 NR -30.70 48.40
SI 21:00:00 NR -31.32 49.23
SI 1981-02-06 00:00:00 NR -32.10 50.00
SI 03:00:00 NR -33.01 50.56
SI 06:00:00 ET -34.00 51.00

Source Information

Agency Information
USA bsh131981.txt
TOKYO
CMA
HKO
NEWDELHI
REUNION WMO-Best-Tracks.txt:Line=11978:helyette
BOM
NADI
WELLINGTON
DS824
TD9636 cons_worldwide_trop_cyclone_18710101-19891231-005:Line=12033
TD9635
NEUMANN tracks.sh:Storm=605:HELYETTE:BSH1281:JTWC
MLC

All available IBTrACS Data

SEASON BASIN SUBBASIN ISO_TIME_________ NATURE LAT LON WMO AGENCY DIST2LAND LANDFALL IFLAG USA AGENCY USA ATCF_ID USA LAT USA LON USA WIND USA SSHS REUNION LAT REUNION LON REUNION TYPE REUNION TNUM TD9636 LAT TD9636 LON TD9636 STAGE TD9636 WIND NEUMANN LAT NEUMANN LON NEUMANN CLASS NEUMANN WIND STORM SPEED STORM DIR
Year degrees north degrees east km km degrees north degrees east kts 1 degrees north degrees east 1 degrees north degrees east kts degrees north degrees east kts kts degrees
1981 SI MM 1981-01-28 00:00:00 TS -11.70 69.00 1530 1516 O_________O_O_ jtwc_sh SH131981 -11.70 69.00 20 -1 -11.70 69.00 1 20 -11.70 69.00 TC 20 4 168
1981 SI MM 03:00:00 TS -11.90 69.04 1516 1510 P_________P_P_ SH131981 -11.89 69.05 20 -1 -11.91 69.03 1 21 -11.89 69.05 TC 20 4 168
1981 SI MM 06:00:00 TS -12.11 69.09 1510 1497 O_________P_O_ jtwc_sh SH131981 -12.10 69.10 20 -1 -12.12 69.07 1 22 -12.10 69.10 TC 20 5 169
1981 SI MM 09:00:00 TS -12.34 69.13 1497 1485 P_________P_P_ SH131981 -12.33 69.14 22 -1 -12.35 69.12 1 23 -12.33 69.14 TC 22 5 167
1981 SI MM 12:00:00 TS -12.60 69.20 1485 1475 O_________O_O_ jtwc_sh SH131981 -12.60 69.20 25 -1 -12.60 69.20 1 25 -12.60 69.20 TC 25 6 164
1981 SI MM 15:00:00 TS -12.89 69.30 1475 1465 P_________P_P_ SH131981 -12.89 69.29 25 -1 -12.87 69.31 1 26 -12.89 69.29 TC 25 6 161
1981 SI MM 18:00:00 TS -13.19 69.41 1465 1456 O_________P_O_ jtwc_sh SH131981 -13.20 69.40 25 -1 -13.17 69.43 1 27 -13.20 69.40 TC 25 6 160
1981 SI MM 21:00:00 TS -13.49 69.52 1456 1448 P_________P_P_ SH131981 -13.50 69.51 27 -1 -13.48 69.53 1 28 -13.50 69.51 TC 27 6 163
1981 SI MM 1981-01-29 00:00:00 TS -13.80 69.60 1448 1431 O_________O_O_ jtwc_sh SH131981 -13.80 69.60 30 -1 -13.80 69.60 1 30 -13.80 69.60 TC 30 6 171
1981 SI MM 03:00:00 TS -14.10 69.62 1431 1415 P_________P_P_ SH131981 -14.09 69.63 30 -1 -14.10 69.61 1 31 -14.09 69.63 TC 30 6 183
1981 SI MM 06:00:00 TS -14.43 69.56 reunion 1415 1374 O____O____P_O_ jtwc_sh SH131981 -14.40 69.60 30 -1 -14.70 69.20 2 9.90 -14.41 69.57 1 32 -14.40 69.60 TC 30 7 195
1981 SI MM 09:00:00 TS -14.77 69.44 1374 1349 P____P____P_P_ SH131981 -14.74 69.52 32 -1 -14.98 69.03 2 -14.74 69.50 1 33 -14.74 69.52 TC 32 8 200
1981 SI MM 12:00:00 TS -15.14 69.30 reunion 1349 1319 O____O____O_O_ jtwc_sh SH131981 -15.10 69.40 35 0 -15.30 68.90 99 9.90 -15.10 69.40 2 35 -15.10 69.40 TC 35 8 197
1981 SI MM 15:00:00 TS -15.54 69.20 1319 1291 P____P____P_P_ SH131981 -15.48 69.31 37 0 -15.68 68.82 99 -15.51 69.34 2 37 -15.48 69.31 TC 37 9 194
1981 SI MM 18:00:00 TS -15.96 69.09 reunion 1286 1249 O____O____P_O_ jtwc_sh SH131981 -15.90 69.20 40 0 -16.10 68.70 99 9.90 -15.94 69.24 2 40 -15.90 69.20 TC 40 9 199
1981 SI MM 21:00:00 TS -16.39 68.90 1249 1203 P____P____P_P_ SH131981 -16.35 69.05 42 0 -16.50 68.42 99 -16.38 69.07 2 42 -16.35 69.05 TC 42 10 207
1981 SI MM 1981-01-30 00:00:00 TS -16.82 68.62 reunion 1203 1158 O____O____O_O_ jtwc_sh SH131981 -16.80 68.80 45 0 -16.90 68.10 99 9.90 -16.80 68.80 2 45 -16.80 68.80 TC 45 10 215
1981 SI MM 03:00:00 TS -17.25 68.28 1158 1104 P____P____P_P_ SH131981 -17.22 68.41 45 0 -17.34 67.91 99 -17.20 68.40 2 45 -17.22 68.41 TC 45 11 223
1981 SI MM 06:00:00 TS -17.62 67.85 reunion 1093 1043 O____O____P_O_ jtwc_sh SH131981 -17.60 67.90 45 0 -17.70 67.70 3 9.90 -17.58 67.89 2 45 -17.60 67.90 TC 45 11 234
1981 SI MM 09:00:00 TS -17.92 67.33 1033 976 P____P____P_P_ SH131981 -17.94 67.32 45 0 -17.87 67.38 3 -17.92 67.31 2 45 -17.94 67.32 TC 45 12 243
1981 SI MM 12:00:00 TS -18.15 66.77 reunion 976 919 O____O____O_O_ jtwc_sh SH131981 -18.20 66.70 45 0 -18.00 67.00 99 9.90 -18.20 66.70 2 45 -18.20 66.70 TC 45 11 247
1981 SI MM 15:00:00 TS -18.35 66.27 916 862 P____P____P_P_ SH131981 -18.37 66.16 42 0 -18.26 66.62 99 -18.40 66.15 2 42 -18.37 66.16 TC 42 10 250
1981 SI MM 18:00:00 TS -18.51 65.74 reunion 852 798 O____O____P_O_ jtwc_sh SH131981 -18.50 65.60 40 0 -18.50 66.20 99 9.90 -18.55 65.57 2 40 -18.50 65.60 TC 40 11 254
1981 SI MM 21:00:00 TS -18.65 65.16 798 731 P____P____P_P_ SH131981 -18.65 64.98 37 0 -18.62 65.71 99 -18.67 64.96 2 37 -18.65 64.98 TC 37 12 257
1981 SI MM 1981-01-31 00:00:00 TS -18.77 64.53 reunion 721 657 O____O____O_O_ jtwc_sh SH131981 -18.80 64.30 35 0 -18.70 65.20 99 9.90 -18.80 64.30 2 35 -18.80 64.30 TC 35 13 258
1981 SI MM 03:00:00 TS -18.92 63.87 657 580 P____P____P_P_ SH131981 -18.94 63.57 32 -1 -18.81 64.75 99 -18.97 63.57 2 33 -18.94 63.57 TC 32 13 258
1981 SI MM 06:00:00 TS -19.06 63.15 reunion 570 496 O____O____P_O_ jtwc_sh SH131981 -19.10 62.80 30 -1 -18.90 64.20 3 9.90 -19.14 62.79 2 32 -19.10 62.80 TC 30 15 259
1981 SI MM 09:00:00 TS -19.21 62.35 496 412 P____P____P_P_ SH131981 -19.30 62.00 30 -1 -18.90 63.41 3 -19.32 62.00 2 31 -19.30 62.00 TC 30 16 259
1981 SI MM 12:00:00 TS -19.35 61.52 reunion 402 326 O____O____O_O_ jtwc_sh SH131981 -19.50 61.20 30 -1 -18.90 62.50 99 9.90 -19.50 61.20 1 30 -19.50 61.20 TC 30 16 260
1981 SI MM 15:00:00 TS -19.48 60.73 316 242 P____P____P_P_ SH131981 -19.65 60.44 30 -1 -18.94 61.61 99 -19.67 60.41 1 30 -19.65 60.44 TC 30 15 259
1981 SI MM 18:00:00 TS -19.63 59.93 reunion 233 156 O____O____P_O_ jtwc_sh SH131981 -19.80 59.70 30 -1 -19.10 60.70 99 9.90 -19.83 59.64 1 30 -19.80 59.70 TC 30 16 256
1981 SI MM 21:00:00 TS -19.86 59.13 142 66 P____P____P_P_ SH131981 -19.99 58.93 30 -1 -19.43 59.75 99 -20.01 58.90 1 30 -19.99 58.93 TC 30 16 252
1981 SI MM 1981-02-01 00:00:00 TS -20.12 58.35 reunion 66 0 O____O____O_O_ jtwc_sh SH131981 -20.20 58.20 30 -1 -19.90 58.80 99 9.90 -20.20 58.20 1 30 -20.20 58.20 TC 30 15 249
1981 SI MM 03:00:00 TS -20.40 57.65 0 0 P____P____P_P_ SH131981 -20.39 57.57 30 -1 -20.45 57.83 99 -20.37 57.62 1 30 -20.39 57.57 TC 30 14 246
1981 SI MM 06:00:00 TS -20.69 57.02 reunion 38 38 O____O____P_O_ jtwc_sh SH131981 -20.60 57.00 30 -1 -21.00 57.00 3 9.90 -20.56 57.08 1 30 -20.60 57.00 TC 30 12 243
1981 SI MM 09:00:00 TS -20.96 56.49 73 20 P____P____P_P_ SH131981 -20.81 56.49 30 -1 -21.41 56.45 3 -20.79 56.53 1 30 -20.81 56.49 TC 30 12 240
1981 SI MM 12:00:00 TS -21.27 55.93 reunion 10 0 O____O____O_O_ jtwc_sh SH131981 -21.10 55.90 30 -1 -21.80 56.00 99 9.90 -21.10 55.90 1 30 -21.10 55.90 TC 30 15 239
1981 SI MM 15:00:00 TS -21.71 55.14 49 49 P____P____P_P_ SH131981 -21.51 55.05 30 -1 -22.28 55.44 99 -21.55 55.05 1 31 -21.51 55.05 TC 30 18 238
1981 SI MM 18:00:00 TS -22.22 54.28 reunion 144 144 O____O____P_O_ jtwc_sh SH131981 -22.00 54.10 30 -1 -22.80 54.80 99 9.90 -22.07 54.12 1 32 -22.00 54.10 TC 30 19 237
1981 SI MM 21:00:00 TS -22.74 53.41 250 250 P____P____P_P_ SH131981 -22.53 53.18 32 -1 -23.34 54.06 99 -22.57 53.21 1 33 -22.53 53.18 TC 32 18 237
1981 SI MM 1981-02-02 00:00:00 TS -23.22 52.62 reunion 349 349 O____O____O_O_ jtwc_sh SH131981 -23.00 52.40 35 0 -23.90 53.30 99 9.90 -23.00 52.40 2 35 -23.00 52.40 TC 35 15 235
1981 SI MM 03:00:00 TS -23.61 52.06 417 400 P____P____P_P_ SH131981 -23.31 51.89 35 0 -24.53 52.62 99 -23.28 51.85 2 35 -23.31 51.89 TC 35 11 235
1981 SI MM 06:00:00 TS -23.87 51.60 reunion 400 362 O____O____P_O_ jtwc_sh SH131981 -23.50 51.50 35 0 -25.00 52.00 3 9.90 -23.48 51.41 2 35 -23.50 51.50 TC 35 9 245
1981 SI MM 09:00:00 TS -24.00 51.15 352 312 P____P____P_P_ SH131981 -23.63 51.06 35 0 -25.12 51.44 3 -23.61 51.02 2 35 -23.63 51.06 TC 35 9 260
1981 SI MM 12:00:00 TS -24.03 50.68 reunion 312 263 O____O____O_O_ jtwc_sh SH131981 -23.70 50.60 35 0 -25.00 50.90 99 9.90 -23.70 50.60 2 35 -23.70 50.60 TC 35 9 269
1981 SI MM 15:00:00 TS -24.02 50.13 253 204 P____P____P_P_ SH131981 -23.76 50.07 35 0 -24.79 50.28 99 -23.76 50.10 2 36 -23.76 50.07 TC 35 10 273
1981 SI MM 18:00:00 TS -23.97 49.57 reunion 204 153 O____O____P_O_ jtwc_sh SH131981 -23.80 49.50 35 0 -24.50 49.70 99 9.90 -23.79 49.56 2 37 -23.80 49.50 TC 35 10 276
1981 SI MM 21:00:00 TS -23.91 49.05 143 97 P____P____P_P_ SH131981 -23.80 48.95 37 0 -24.26 49.32 99 -23.79 48.97 2 38 -23.80 48.95 TC 37 10 277
1981 SI MM 1981-02-03 00:00:00 TS -23.85 48.45 reunion 92 20 O____O____O_O_ jtwc_sh SH131981 -23.80 48.30 40 0 -24.00 48.90 99 9.90 -23.80 48.30 2 40 -23.80 48.30 TC 40 13 276
1981 SI MM 03:00:00 TS -23.78 47.62 10 0 P____P____P_P_ SH131981 -23.84 47.42 40 0 -23.60 48.18 99 -23.82 47.47 2 40 -23.84 47.42 TC 35 16 273
1981 SI MM 06:00:00 TS -23.76 46.75 reunion 0 0 O____O____P_O_ jtwc_sh SH131981 -23.90 46.50 40 0 -23.40 47.40 3 9.90 -23.84 46.59 2 40 -23.90 46.50 TC 30 15 267
1981 SI MM 09:00:00 TS -23.86 45.96 0 0 P____P____P_P_ SH131981 -23.93 45.67 40 0 -23.70 46.76 3 -23.90 45.74 2 40 -23.93 45.67 TC 27 14 258
1981 SI MM 12:00:00 TS -24.05 45.30 reunion 0 0 O____O____O_O_ jtwc_sh SH131981 -24.00 45.00 40 0 -24.20 46.20 99 9.90 -24.00 45.00 2 40 -24.00 45.00 TC 25 11 248
1981 SI MM 15:00:00 TS -24.27 44.85 0 0 P____P____P_P_ SH131981 -24.17 44.60 37 0 -24.59 45.70 99 -24.16 44.50 2 36 -24.17 44.60 TC 25 9 238
1981 SI MM 18:00:00 TS -24.52 44.48 reunion 0 0 O____O____P_O_ jtwc_sh SH131981 -24.40 44.30 35 0 -24.90 45.20 99 9.90 -24.38 44.11 2 32 -24.40 44.30 TC 25 9 237
1981 SI MM 21:00:00 TS -24.74 44.05 0 0 P____P____P_P_ SH131981 -24.64 43.90 30 -1 -25.05 44.61 99 -24.63 43.80 2 28 -24.64 43.90 TC 25 9 240
1981 SI MM 1981-02-04 00:00:00 TS -24.98 43.62 reunion 40 40 O____O____O_O_ jtwc_sh SH131981 -24.90 43.50 25 -1 -25.20 44.00 99 9.90 -24.90 43.50 1 25 -24.90 43.50 TC 25 9 236
1981 SI MM 03:00:00 TS -25.24 43.23 83 83 P____P____P_P_ SH131981 -25.14 43.15 22 -1 -25.50 43.44 99 -25.17 43.17 1 23 -25.14 43.15 TC 22 9 231
1981 SI MM 06:00:00 MX -25.57 42.83 reunion 137 137 O____O____P_O_ jtwc_sh SH131981 -25.40 42.80 20 -1 -25.90 42.90 5 9.90 -25.45 42.80 1 22 -25.40 42.80 TC 20 11 228
1981 SI MM 09:00:00 MX -25.95 42.35 195 195 P____P____P_P_ SH131981 -25.69 42.41 20 -1 -26.33 42.27 5 -25.73 42.40 1 21 -25.69 42.41 TC 20 12 224
1981 SI MM 12:00:00 TS -26.46 41.89 reunion 268 268 O____O____O_O_ jtwc_sh SH131981 -26.00 42.00 20 -1 -26.80 41.80 99 9.90 -26.00 42.00 1 20 -26.00 42.00 TC 20 15 207
1981 SI MM 15:00:00 NR -27.28 41.60 351 351 _____P________ SH131981 -1 -27.28 41.60 99 1 TC 14 183
1981 SI MM 18:00:00 NR -27.80 41.80 reunion 380 380 _____O________ -1 -27.80 41.80 99 9.90 1 14 148
1981 SI MM 21:00:00 NR -28.44 42.43 398 398 _____P________ -1 -28.44 42.43 99 1 19 130
1981 SI MM 1981-02-05 00:00:00 NR -29.00 43.40 reunion 419 413 _____O________ -1 -29.00 43.40 99 9.90 20 116
1981 SI MM 03:00:00 NR -29.31 44.52 418 417 _____P________ -1 -29.31 44.52 99 20 105
1981 SI MM 06:00:00 TS -29.50 45.60 reunion 435 435 _____O________ -1 -29.50 45.60 3 9.90 16 103
1981 SI MM 09:00:00 TS -29.68 46.36 466 466 _____P________ -1 -29.68 46.36 3 13 108
1981 SI MM 12:00:00 NR -29.90 47.00 reunion 502 502 _____O________ -1 -29.90 47.00 99 9.90 13 116
1981 SI MM 15:00:00 NR -30.22 47.69 557 557 _____P________ -1 -30.22 47.69 99 15 123
1981 SI MM 18:00:00 NR -30.70 48.40 reunion 633 633 _____O________ -1 -30.70 48.40 99 9.90 17 129
1981 SI MM 21:00:00 NR -31.32 49.23 720 720 _____P________ -1 -31.32 49.23 99 20 136
1981 SI MM 1981-02-06 00:00:00 NR -32.10 50.00 reunion 830 830 _____O________ -1 -32.10 50.00 99 9.90 20 146
1981 SI MM 03:00:00 NR -33.01 50.56 945 945 _____P________ -1 -33.01 50.56 99 21 156
1981 SI MM 06:00:00 ET -34.00 51.00 reunion 1062 _____O________ -1 -34.00 51.00 5 9.90 21 160