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1971 Hurricane ILSA (1971212N12262)


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

Summary Information

Storm ID 1971212N12262
Start Jul 31 00Z
Max Intensity 100 kt (Aug 3 06Z), 978 mb (Aug 4 00Z)
End Aug 8 18Z
ATCF IDs EP091971
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 WMO WIND WMO PRES USA WIND USA PRES DS824 WIND DS824 PRES
degrees north degrees east kts mb kts mb kts mb
EP 1971-07-31 00:00:00 TS 11.90 -98.20 25 25 25
EP 03:00:00 TS 11.95 -98.71 25 25
EP 06:00:00 TS 12.00 -99.20 25 25 25
EP 09:00:00 TS 12.05 -99.66 25 25
EP 12:00:00 TS 12.10 -100.10 25 25 25
EP 15:00:00 TS 12.18 -100.54 25 25
EP 18:00:00 TS 12.27 -100.97 25 25 25
EP 21:00:00 TS 12.33 -101.31 25 25
EP 1971-08-01 00:00:00 TS 12.50 -101.80 25 25 25
EP 03:00:00 TS 12.89 -102.67 35 35
EP 06:00:00 TS 13.40 -103.68 45 45 45
EP 09:00:00 TS 13.95 -104.61 60 60
EP 12:00:00 TS 14.50 -105.40 75 75 75
EP 15:00:00 TS 15.02 -105.92 75 75
EP 18:00:00 TS 15.49 -106.32 75 75 75
EP 21:00:00 TS 15.89 -106.76 75 75
EP 1971-08-02 00:00:00 TS 16.20 -107.20 75 75 75
EP 03:00:00 TS 16.39 -107.69 75 75
EP 06:00:00 TS 16.52 -108.20 75 75 75
EP 09:00:00 TS 16.66 -108.71 75 75
EP 12:00:00 TS 16.80 -109.20 75 75 75
EP 15:00:00 TS 16.95 -109.67 75 75
EP 18:00:00 TS 17.11 -110.10 75 75 75
EP 21:00:00 TS 17.30 -110.49 82 82
EP 1971-08-03 00:00:00 TS 17.50 -110.80 90 90 90
EP 03:00:00 TS 17.66 -111.03 95 95
EP 06:00:00 TS 17.81 -111.21 100 100 100
EP 09:00:00 TS 18.01 -111.36 100 100
EP 12:00:00 TS 18.20 -111.50 100 100 100
EP 15:00:00 TS 18.36 -111.65 90 90
EP 18:00:00 TS 18.50 -111.79 80 80 80
EP 21:00:00 TS 18.65 -111.90 72 72
EP 1971-08-04 00:00:00 TS 18.80 -112.00 65 978 65 978 65 978
EP 03:00:00 TS 18.94 -112.10 65 65
EP 06:00:00 TS 19.10 -112.20 65 65 65
EP 09:00:00 TS 19.28 -112.34 65 65
EP 12:00:00 TS 19.50 -112.50 65 65 65
EP 15:00:00 TS 19.78 -112.63 65 65
EP 18:00:00 TS 20.11 -112.81 65 65 65
EP 21:00:00 TS 20.47 -113.10 65 65
EP 1971-08-05 00:00:00 TS 20.80 -113.50 65 65 65
EP 03:00:00 TS 21.02 -114.01 65 65
EP 06:00:00 TS 21.21 -114.59 65 65 65
EP 09:00:00 TS 21.40 -115.19 65 65
EP 12:00:00 TS 21.60 -115.80 65 65 65
EP 15:00:00 TS 21.80 -116.40 55 55
EP 18:00:00 TS 22.01 -117.00 45 988 45 988 45 988
EP 21:00:00 TS 22.25 -117.60 45 45
EP 1971-08-06 00:00:00 TS 22.50 -118.20 45 45 45
EP 03:00:00 TS 22.71 -118.80 45 45
EP 06:00:00 TS 22.92 -119.39 45 45 45
EP 09:00:00 TS 23.16 -119.94 45 45
EP 12:00:00 TS 23.40 -120.50 45 45 45
EP 15:00:00 TS 23.63 -121.10 35 35
EP 18:00:00 TS 23.78 -121.71 25 25 25
EP 21:00:00 TS 23.84 -122.35 25 25
EP 1971-08-07 00:00:00 TS 23.80 -122.90 25 25 25
EP 03:00:00 TS 23.68 -123.30 25 25
EP 06:00:00 TS 23.50 -123.61 25 25 25
EP 09:00:00 TS 23.29 -123.90 25 25
EP 12:00:00 TS 23.10 -124.20 25 25 25
EP 15:00:00 TS 22.98 -124.54 25 25
EP 18:00:00 TS 22.90 -124.90 25 25 25
EP 21:00:00 TS 22.80 -125.25 25 25
EP 1971-08-08 00:00:00 TS 22.70 -125.60 25 25 25
EP 03:00:00 TS 22.60 -125.95 25 25
EP 06:00:00 TS 22.50 -126.31 25 25 25
EP 09:00:00 TS 22.39 -126.75 25 25
EP 12:00:00 TS 22.30 -127.10 25 25 25
EP 15:00:00 TS 22.28 -127.18 25 25
EP 18:00:00 TS 22.30 -127.10 25 25 25

Source Information

Agency Information
USA hurdat2-nepac-1949-2021-042022.txt:Line=4768:ILSA
TOKYO
CMA
HKO
NEWDELHI
REUNION
BOM
NADI
WELLINGTON
DS824 e_npac.dat:237:ILSA
TD9636 cons_worldwide_trop_cyclone_18710101-19891231-002:Line=2450
TD9635
NEUMANN
MLC

All available IBTrACS Data

SEASON BASIN SUBBASIN ISO_TIME_________ NATURE LAT LON WMO WIND WMO PRES WMO AGENCY DIST2LAND LANDFALL IFLAG USA AGENCY USA ATCF_ID USA LAT USA LON USA STATUS USA WIND USA PRES USA SSHS DS824 LAT DS824 LON DS824 STAGE DS824 WIND DS824 PRES TD9636 LAT TD9636 LON TD9636 STAGE STORM SPEED STORM DIR
Year degrees north degrees east kts mb km km degrees north degrees east kts mb 1 degrees north degrees east kts mb degrees north degrees east kts degrees
1971 EP MM 1971-07-31 00:00:00 TS 11.90 -98.20 25 hurdat_epa 448 448 O________OO___ hurdat_epa EP091971 11.90 -98.20 TD 25 -1 11.90 -98.20 TC 25 11.90 -98.20 1 10 276
1971 EP MM 03:00:00 TS 11.95 -98.71 458 458 P________PP___ EP091971 11.95 -98.71 TD 25 -1 11.95 -98.71 TC 25 11.96 -98.72 1 10 276
1971 EP MM 06:00:00 TS 12.00 -99.20 25 hurdat_epa 472 472 O________OP___ hurdat_epa EP091971 12.00 -99.20 TD 25 -1 12.00 -99.20 TC 25 12.02 -99.22 1 9 276
1971 EP MM 09:00:00 TS 12.05 -99.66 492 482 P________PP___ EP091971 12.04 -99.66 TD 25 -1 12.04 -99.66 TC 25 12.07 -99.68 1 9 276
1971 EP MM 12:00:00 TS 12.10 -100.10 25 hurdat_epa 497 497 O________OO___ hurdat_epa EP091971 12.10 -100.10 TD 25 -1 12.10 -100.10 TC 25 12.10 -100.10 1 9 279
1971 EP MM 15:00:00 TS 12.18 -100.54 502 502 P________PP___ EP091971 12.19 -100.56 TD 25 -1 12.19 -100.56 TC 25 12.12 -100.46 1 9 282
1971 EP MM 18:00:00 TS 12.27 -100.97 25 hurdat_epa 512 512 O________OP___ hurdat_epa EP091971 12.30 -101.00 TD 25 -1 12.30 -101.00 TC 25 12.16 -100.83 1 8 282
1971 EP MM 21:00:00 TS 12.33 -101.31 521 514 P________PP___ EP091971 12.35 -101.33 TD 25 -1 12.35 -101.33 TC 25 12.28 -101.25 1 8 286
1971 EP MM 1971-08-01 00:00:00 TS 12.50 -101.80 25 hurdat_epa 521 518 O________OO___ hurdat_epa EP091971 12.50 -101.80 TD 25 -1 12.50 -101.80 TC 25 12.50 -101.80 2 14 293
1971 EP MM 03:00:00 TS 12.89 -102.67 521 511 P________PP___ EP091971 12.88 -102.68 TD 35 0 12.88 -102.68 TC 35 12.90 -102.63 2 20 296
1971 EP MM 06:00:00 TS 13.40 -103.68 45 hurdat_epa 518 500 O________OP___ hurdat_epa EP091971 13.40 -103.70 TS 45 0 13.40 -103.70 TC 45 13.41 -103.59 2 22 299
1971 EP MM 09:00:00 TS 13.95 -104.61 503 471 P________PP___ EP091971 13.94 -104.62 TS 60 0 13.94 -104.62 TC 60 13.96 -104.55 2 20 303
1971 EP MM 12:00:00 TS 14.50 -105.40 75 hurdat_epa 471 449 O________OO___ hurdat_epa EP091971 14.50 -105.40 HU 75 1 14.50 -105.40 TC 75 14.50 -105.40 4 17 310
1971 EP MM 15:00:00 TS 15.02 -105.92 449 432 P________PP___ EP091971 15.03 -105.91 HU 75 1 15.03 -105.91 TC 75 14.99 -105.97 4 13 318
1971 EP MM 18:00:00 TS 15.49 -106.32 75 hurdat_epa 432 420 O________OP___ hurdat_epa EP091971 15.50 -106.30 HU 75 1 15.50 -106.30 TC 75 15.45 -106.42 4 12 317
1971 EP MM 21:00:00 TS 15.89 -106.76 425 414 P________PP___ EP091971 15.90 -106.74 HU 75 1 15.90 -106.74 TC 75 15.86 -106.81 4 11 310
1971 EP MM 1971-08-02 00:00:00 TS 16.20 -107.20 75 hurdat_epa 421 418 O________OO___ hurdat_epa EP091971 16.20 -107.20 HU 75 1 16.20 -107.20 TC 75 16.20 -107.20 4 10 299
1971 EP MM 03:00:00 TS 16.39 -107.69 438 438 P________PP___ EP091971 16.38 -107.69 HU 75 1 16.38 -107.69 TC 75 16.43 -107.70 4 10 288
1971 EP MM 06:00:00 TS 16.52 -108.20 75 hurdat_epa 468 468 O________OP___ hurdat_epa EP091971 16.50 -108.20 HU 75 1 16.50 -108.20 TC 75 16.58 -108.22 4 10 285
1971 EP MM 09:00:00 TS 16.66 -108.71 491 491 P________PP___ EP091971 16.65 -108.71 HU 75 1 16.65 -108.71 TC 75 16.69 -108.72 4 10 287
1971 EP MM 12:00:00 TS 16.80 -109.20 75 hurdat_epa 524 524 O________OO___ hurdat_epa EP091971 16.80 -109.20 HU 75 1 16.80 -109.20 TC 75 16.80 -109.20 4 10 288
1971 EP MM 15:00:00 TS 16.95 -109.67 560 553 P________PP___ EP091971 16.94 -109.67 HU 75 1 16.94 -109.67 TC 75 16.97 -109.67 4 9 290
1971 EP MM 18:00:00 TS 17.11 -110.10 75 hurdat_epa 583 583 O________OP___ hurdat_epa EP091971 17.10 -110.10 HU 75 1 17.10 -110.10 TC 75 17.14 -110.10 4 9 295
1971 EP MM 21:00:00 TS 17.30 -110.49 607 607 P________PP___ EP091971 17.30 -110.49 HU 82 1 17.30 -110.49 TC 82 17.32 -110.48 4 8 300
1971 EP MM 1971-08-03 00:00:00 TS 17.50 -110.80 90 hurdat_epa 609 600 O________OO___ hurdat_epa EP091971 17.50 -110.80 HU 90 2 17.50 -110.80 TC 90 17.50 -110.80 4 6 304
1971 EP MM 03:00:00 TS 17.66 -111.03 590 583 P________PP___ EP091971 17.65 -111.03 HU 95 2 17.65 -111.03 TC 95 17.68 -111.05 4 5 309
1971 EP MM 06:00:00 TS 17.81 -111.21 100 hurdat_epa 583 564 O________OP___ hurdat_epa EP091971 17.80 -111.20 HU 100 3 17.80 -111.20 TC 100 17.86 -111.23 4 5 318
1971 EP MM 09:00:00 TS 18.01 -111.36 567 548 P________PP___ EP091971 18.00 -111.36 HU 100 3 18.00 -111.36 TC 100 18.03 -111.38 4 5 324
1971 EP MM 12:00:00 TS 18.20 -111.50 100 hurdat_epa 548 540 O________OO___ hurdat_epa EP091971 18.20 -111.50 HU 100 3 18.20 -111.50 TC 100 18.20 -111.50 4 4 322
1971 EP MM 15:00:00 TS 18.36 -111.65 533 522 P________PP___ EP091971 18.36 -111.66 HU 90 2 18.36 -111.66 TC 90 18.35 -111.64 4 4 317
1971 EP MM 18:00:00 TS 18.50 -111.79 80 hurdat_epa 526 515 O________OP___ hurdat_epa EP091971 18.50 -111.80 HU 80 1 18.50 -111.80 TC 80 18.50 -111.77 4 4 321
1971 EP MM 21:00:00 TS 18.65 -111.90 519 503 P________PP___ EP091971 18.65 -111.91 HU 72 1 18.65 -111.91 TC 72 18.65 -111.88 4 4 326
1971 EP MM 1971-08-04 00:00:00 TS 18.80 -112.00 65 978 hurdat_epa 503 493 O________OO___ hurdat_epa EP091971 18.80 -112.00 HU 65 978 1 18.80 -112.00 TC 65 978 18.80 -112.00 4 3 328
1971 EP MM 03:00:00 TS 18.94 -112.10 497 482 P________PP___ EP091971 18.94 -112.09 HU 65 1 18.94 -112.09 TC 65 18.94 -112.11 4 4 328
1971 EP MM 06:00:00 TS 19.10 -112.20 65 hurdat_epa 482 467 O________OP___ hurdat_epa EP091971 19.10 -112.20 HU 65 1 19.10 -112.20 TC 65 19.10 -112.21 4 4 325
1971 EP MM 09:00:00 TS 19.28 -112.34 467 460 P________PP___ EP091971 19.28 -112.34 HU 65 1 19.28 -112.34 TC 65 19.28 -112.34 4 5 325
1971 EP MM 12:00:00 TS 19.50 -112.50 65 hurdat_epa 460 438 O________OO___ hurdat_epa EP091971 19.50 -112.50 HU 65 1 19.50 -112.50 TC 65 19.50 -112.50 4 6 332
1971 EP MM 15:00:00 TS 19.78 -112.63 438 426 P________PP___ EP091971 19.78 -112.62 HU 65 1 19.78 -112.62 TC 65 19.80 -112.66 4 7 334
1971 EP MM 18:00:00 TS 20.11 -112.81 65 hurdat_epa 426 417 O________OP___ hurdat_epa EP091971 20.10 -112.80 HU 65 1 20.10 -112.80 TC 65 20.14 -112.87 4 8 327
1971 EP MM 21:00:00 TS 20.47 -113.10 417 417 P________PP___ EP091971 20.46 -113.09 HU 65 1 20.46 -113.09 TC 65 20.49 -113.14 4 9 317
1971 EP MM 1971-08-05 00:00:00 TS 20.80 -113.50 65 hurdat_epa 430 430 O________OO___ hurdat_epa EP091971 20.80 -113.50 HU 65 1 20.80 -113.50 TC 65 20.80 -113.50 4 10 303
1971 EP MM 03:00:00 TS 21.02 -114.01 451 447 P________PP___ EP091971 21.02 -114.01 HU 65 1 21.02 -114.01 TC 65 21.03 -113.98 4 11 292
1971 EP MM 06:00:00 TS 21.21 -114.59 65 hurdat_epa 467 467 O________OP___ hurdat_epa EP091971 21.20 -114.60 HU 65 1 21.20 -114.60 TC 65 21.23 -114.55 4 12 289
1971 EP MM 09:00:00 TS 21.40 -115.19 486 486 P________PP___ EP091971 21.40 -115.19 HU 65 1 21.40 -115.19 TC 65 21.41 -115.17 4 12 289
1971 EP MM 12:00:00 TS 21.60 -115.80 65 hurdat_epa 512 512 O________OO___ hurdat_epa EP091971 21.60 -115.80 HU 65 1 21.60 -115.80 TC 65 21.60 -115.80 4 12 289
1971 EP MM 15:00:00 TS 21.80 -116.40 544 544 P________PP___ EP091971 21.79 -116.40 HU 55 0 21.79 -116.40 TC 55 21.82 -116.40 4 12 290
1971 EP MM 18:00:00 TS 22.01 -117.00 45 988 hurdat_epa 580 580 O________OP___ hurdat_epa EP091971 22.00 -117.00 TS 45 988 0 22.00 -117.00 TC 45 988 22.04 -117.00 4 12 292
1971 EP MM 21:00:00 TS 22.25 -117.60 616 616 P________PP___ EP091971 22.25 -117.60 TS 45 0 22.25 -117.60 TC 45 22.27 -117.60 4 12 294
1971 EP MM 1971-08-06 00:00:00 TS 22.50 -118.20 45 hurdat_epa 649 649 O________OO___ hurdat_epa EP091971 22.50 -118.20 TS 45 0 22.50 -118.20 TC 45 22.50 -118.20 2 12 292
1971 EP MM 03:00:00 TS 22.71 -118.80 670 668 P________PP___ EP091971 22.70 -118.81 TS 45 0 22.70 -118.81 TC 45 22.74 -118.78 2 12 291
1971 EP MM 06:00:00 TS 22.92 -119.39 45 hurdat_epa 694 692 O________OP___ hurdat_epa EP091971 22.90 -119.40 TS 45 0 22.90 -119.40 TC 45 22.99 -119.35 2 11 293
1971 EP MM 09:00:00 TS 23.16 -119.94 702 702 P________PP___ EP091971 23.15 -119.95 TS 45 0 23.15 -119.95 TC 45 23.21 -119.92 2 11 295
1971 EP MM 12:00:00 TS 23.40 -120.50 45 hurdat_epa 731 731 O________OO___ hurdat_epa EP091971 23.40 -120.50 TS 45 0 23.40 -120.50 TC 45 23.40 -120.50 2 12 294
1971 EP MM 15:00:00 TS 23.63 -121.10 763 763 P________PP___ EP091971 23.64 -121.09 TS 35 0 23.64 -121.09 TC 35 23.58 -121.14 2 12 289
1971 EP MM 18:00:00 TS 23.78 -121.71 25 hurdat_epa 799 799 O________OP___ hurdat_epa EP091971 23.80 -121.70 TD 25 -1 23.80 -121.70 TC 25 23.72 -121.77 2 12 281
1971 EP MM 21:00:00 TS 23.84 -122.35 850 850 P________PP___ EP091971 23.85 -122.34 TD 25 -1 23.85 -122.34 TC 25 23.80 -122.37 2 11 271
1971 EP MM 1971-08-07 00:00:00 TS 23.80 -122.90 25 hurdat_epa 902 902 O________OO___ hurdat_epa EP091971 23.80 -122.90 TD 25 -1 23.80 -122.90 TC 25 23.80 -122.90 6 9 260
1971 EP MM 03:00:00 TS 23.68 -123.30 943 943 P________PP___ EP091971 23.68 -123.30 TD 25 -1 23.68 -123.30 TC 25 23.69 -123.30 6 7 245
1971 EP MM 06:00:00 TS 23.50 -123.61 25 hurdat_epa 980 980 O________OP___ hurdat_epa EP091971 23.50 -123.60 TD 25 -1 23.50 -123.60 TC 25 23.51 -123.63 6 7 235
1971 EP MM 09:00:00 TS 23.29 -123.90 1018 1018 P________PP___ EP091971 23.29 -123.90 TD 25 -1 23.29 -123.90 TC 25 23.30 -123.91 6 7 234
1971 EP MM 12:00:00 TS 23.10 -124.20 25 hurdat_epa 1056 1056 O________OO___ hurdat_epa EP091971 23.10 -124.20 TD 25 -1 23.10 -124.20 TC 25 23.10 -124.20 6 7 242
1971 EP MM 15:00:00 TS 22.98 -124.54 1088 1088 P________PP___ EP091971 22.98 -124.54 TD 25 -1 22.98 -124.54 TC 25 22.98 -124.54 6 7 252
1971 EP MM 18:00:00 TS 22.90 -124.90 25 hurdat_epa 1129 1129 O________OP___ hurdat_epa EP091971 22.90 -124.90 TD 25 -1 22.90 -124.90 TC 25 22.88 -124.88 6 7 254
1971 EP MM 21:00:00 TS 22.80 -125.25 1161 1161 P________PP___ EP091971 22.80 -125.25 TD 25 -1 22.80 -125.25 TC 25 22.79 -125.24 6 7 253
1971 EP MM 1971-08-08 00:00:00 TS 22.70 -125.60 25 hurdat_epa 1202 1202 O________OO___ hurdat_epa EP091971 22.70 -125.60 TD 25 -1 22.70 -125.60 TC 25 22.70 -125.60 6 7 253
1971 EP MM 03:00:00 TS 22.60 -125.95 1234 1234 P________PP___ EP091971 22.60 -125.94 TD 25 -1 22.60 -125.94 TC 25 22.61 -125.97 6 7 253
1971 EP MM 06:00:00 TS 22.50 -126.31 25 hurdat_epa 1275 1275 O________OP___ hurdat_epa EP091971 22.50 -126.30 TD 25 -1 22.50 -126.30 TC 25 22.51 -126.34 6 8 254
1971 EP MM 09:00:00 TS 22.39 -126.75 1317 1317 P________PP___ EP091971 22.39 -126.75 TD 25 -1 22.39 -126.75 TC 25 22.41 -126.72 6 8 255
1971 EP MM 12:00:00 TS 22.30 -127.10 25 hurdat_epa 1358 1358 O________OO___ hurdat_epa EP091971 22.30 -127.10 TD 25 -1 22.30 -127.10 TC 25 22.30 -127.10 6 4 255
1971 EP MM 15:00:00 TS 22.28 -127.18 1367 1358 P________P____ EP091971 22.28 -127.18 TD 25 -1 22.28 -127.18 TC 25 6 0 0
1971 EP MM 18:00:00 TS 22.30 -127.10 25 hurdat_epa 1358 O________O____ hurdat_epa EP091971 22.30 -127.10 TD 25 -1 22.30 -127.10 TC 25 6 2 75