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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 12.00 -98.70 25 25
EP 06:00:00 TS 12.00 -99.20 25 25 25
EP 09:00:00 TS 12.00 -99.70 25 25
EP 12:00:00 TS 12.10 -100.10 25 25 25
EP 15:00:00 TS 12.20 -100.50 25 25
EP 18:00:00 TS 12.30 -101.00 25 25 25
EP 21:00:00 TS 12.30 -101.30 25 25
EP 1971-08-01 00:00:00 TS 12.50 -101.80 25 25 25
EP 03:00:00 TS 12.90 -102.70 35 35
EP 06:00:00 TS 13.40 -103.70 45 45 45
EP 09:00:00 TS 13.90 -104.60 60 60
EP 12:00:00 TS 14.50 -105.40 75 75 75
EP 15:00:00 TS 15.00 -105.90 75 75
EP 18:00:00 TS 15.50 -106.30 75 75 75
EP 21:00:00 TS 15.90 -106.80 75 75
EP 1971-08-02 00:00:00 TS 16.20 -107.20 75 75 75
EP 03:00:00 TS 16.40 -107.70 75 75
EP 06:00:00 TS 16.50 -108.20 75 75 75
EP 09:00:00 TS 16.70 -108.70 75 75
EP 12:00:00 TS 16.80 -109.20 75 75 75
EP 15:00:00 TS 16.90 -109.70 75 75
EP 18:00:00 TS 17.10 -110.10 75 75 75
EP 21:00:00 TS 17.30 -110.50 83 83
EP 1971-08-03 00:00:00 TS 17.50 -110.80 90 90 90
EP 03:00:00 TS 17.70 -111.00 95 95
EP 06:00:00 TS 17.80 -111.20 100 100 100
EP 09:00:00 TS 18.00 -111.40 100 100
EP 12:00:00 TS 18.20 -111.50 100 100 100
EP 15:00:00 TS 18.40 -111.70 90 90
EP 18:00:00 TS 18.50 -111.80 80 80 80
EP 21:00:00 TS 18.60 -111.90 73 73
EP 1971-08-04 00:00:00 TS 18.80 -112.00 65 978 65 978 65 978
EP 03:00:00 TS 18.90 -112.10 65 65
EP 06:00:00 TS 19.10 -112.20 65 65 65
EP 09:00:00 TS 19.30 -112.30 65 65
EP 12:00:00 TS 19.50 -112.50 65 65 65
EP 15:00:00 TS 19.80 -112.60 65 65
EP 18:00:00 TS 20.10 -112.80 65 65 65
EP 21:00:00 TS 20.50 -113.10 65 65
EP 1971-08-05 00:00:00 TS 20.80 -113.50 65 65 65
EP 03:00:00 TS 21.00 -114.00 65 65
EP 06:00:00 TS 21.20 -114.60 65 65 65
EP 09:00:00 TS 21.40 -115.20 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 22.00 -117.00 45 988 45 988 45 988
EP 21:00:00 TS 22.30 -117.60 45 45
EP 1971-08-06 00:00:00 TS 22.50 -118.20 45 45 45
EP 03:00:00 TS 22.70 -118.80 45 45
EP 06:00:00 TS 22.90 -119.40 45 45 45
EP 09:00:00 TS 23.20 -119.90 45 45
EP 12:00:00 TS 23.40 -120.50 45 45 45
EP 15:00:00 TS 23.60 -121.10 35 35
EP 18:00:00 TS 23.80 -121.70 25 25 25
EP 21:00:00 TS 23.80 -122.30 25 25
EP 1971-08-07 00:00:00 MX 23.80 -122.90 25 25 25
EP 03:00:00 MX 23.70 -123.30 25 25
EP 06:00:00 MX 23.50 -123.60 25 25 25
EP 09:00:00 MX 23.30 -123.90 25 25
EP 12:00:00 MX 23.10 -124.20 25 25 25
EP 15:00:00 MX 23.00 -124.50 25 25
EP 18:00:00 MX 22.90 -124.90 25 25 25
EP 21:00:00 MX 22.80 -125.20 25 25
EP 1971-08-08 00:00:00 MX 22.70 -125.60 25 25 25
EP 03:00:00 MX 22.60 -125.90 25 25
EP 06:00:00 MX 22.50 -126.30 25 25 25
EP 09:00:00 MX 22.40 -126.70 25 25
EP 12:00:00 MX 22.30 -127.10 25 25 25
EP 15:00:00 TS 22.30 -127.20 25 25
EP 18:00:00 TS 22.30 -127.10 25 25 25

Source Information

Agency Information
USA hurdat2-nepac-1949-2023-042624.txt:Line=4768:ILSA
TOKYO
CMA
HKO
KMA
NEWDELHI
REUNION
BOM
NADI
WELLINGTON
DS824 e_npac.dat:237:ILSA
TD9636 cons_worldwide_trop_cyclone_18710101-19891231-002:Line=2445
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 10 275
1971 EP MM 03:00:00 TS 12.00 -98.70 458 458 P_________PP___ EP091971 12.00 -98.70 TD 25 -1 12.00 -98.70 TC 25 12.00 -98.70 1 10 275
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 12.00 -99.20 1 9 275
1971 EP MM 09:00:00 TS 12.00 -99.70 492 482 P_________PP___ EP091971 12.00 -99.70 TD 25 -1 12.00 -99.70 TC 25 12.10 -99.70 1 9 275
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 9 280
1971 EP MM 15:00:00 TS 12.20 -100.50 502 502 P_________PP___ EP091971 12.20 -100.60 TD 25 -1 12.20 -100.60 TC 25 12.10 -100.50 1 9 280
1971 EP MM 18:00:00 TS 12.30 -101.00 25 hurdat_epa 512 512 O_________OP___ hurdat_epa EP091971 12.30 -101.00 TD 25 -1 12.30 -101.00 TC 25 12.20 -100.80 1 8 280
1971 EP MM 21:00:00 TS 12.30 -101.30 521 514 P_________PP___ EP091971 12.30 -101.30 TD 25 -1 12.30 -101.30 TC 25 12.30 -101.20 1 8 285
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 14 295
1971 EP MM 03:00:00 TS 12.90 -102.70 521 511 P_________PP___ EP091971 12.90 -102.70 TD 35 0 12.90 -102.70 TC 35 12.90 -102.60 2 20 295
1971 EP MM 06:00:00 TS 13.40 -103.70 45 hurdat_epa 518 500 O_________OP___ hurdat_epa EP091971 13.40 -103.70 TS 45 0 13.40 -103.70 TC 45 13.40 -103.60 2 22 300
1971 EP MM 09:00:00 TS 13.90 -104.60 503 471 P_________PP___ EP091971 13.90 -104.60 TS 60 0 13.90 -104.60 TC 60 14.00 -104.50 2 20 305
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 15.00 -105.90 449 432 P_________PP___ EP091971 15.00 -105.90 HU 75 1 15.00 -105.90 TC 75 15.00 -106.00 4 13 320
1971 EP MM 18:00:00 TS 15.50 -106.30 75 hurdat_epa 432 420 O_________OP___ hurdat_epa EP091971 15.50 -106.30 HU 75 1 15.50 -106.30 TC 75 15.50 -106.40 4 12 315
1971 EP MM 21:00:00 TS 15.90 -106.80 425 414 P_________PP___ EP091971 15.90 -106.70 HU 75 1 15.90 -106.70 TC 75 15.90 -106.80 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 10 300
1971 EP MM 03:00:00 TS 16.40 -107.70 438 438 P_________PP___ EP091971 16.40 -107.70 HU 75 1 16.40 -107.70 TC 75 16.40 -107.70 4 10 290
1971 EP MM 06:00:00 TS 16.50 -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 16.60 -108.20 4 10 285
1971 EP MM 09:00:00 TS 16.70 -108.70 491 491 P_________PP___ EP091971 16.60 -108.70 HU 75 1 16.60 -108.70 TC 75 16.70 -108.70 4 10 285
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 10 290
1971 EP MM 15:00:00 TS 16.90 -109.70 560 553 P_________PP___ EP091971 16.90 -109.70 HU 75 1 16.90 -109.70 TC 75 17.00 -109.70 4 9 290
1971 EP MM 18:00:00 TS 17.10 -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 17.10 -110.10 4 9 295
1971 EP MM 21:00:00 TS 17.30 -110.50 607 607 P_________PP___ EP091971 17.30 -110.50 HU 83 2 17.30 -110.50 TC 83 17.30 -110.50 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 6 305
1971 EP MM 03:00:00 TS 17.70 -111.00 590 583 P_________PP___ EP091971 17.60 -111.00 HU 95 2 17.60 -111.00 TC 95 17.70 -111.00 4 5 310
1971 EP MM 06:00:00 TS 17.80 -111.20 100 hurdat_epa 583 564 O_________OP___ hurdat_epa EP091971 17.80 -111.20 HU 100 3 17.80 -111.20 TC 100 17.90 -111.20 4 5 320
1971 EP MM 09:00:00 TS 18.00 -111.40 567 548 P_________PP___ EP091971 18.00 -111.40 HU 100 3 18.00 -111.40 TC 100 18.00 -111.40 4 5 325
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 4 320
1971 EP MM 15:00:00 TS 18.40 -111.70 533 522 P_________PP___ EP091971 18.40 -111.70 HU 90 2 18.40 -111.70 TC 90 18.40 -111.60 4 4 315
1971 EP MM 18:00:00 TS 18.50 -111.80 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 -111.80 4 4 320
1971 EP MM 21:00:00 TS 18.60 -111.90 519 503 P_________PP___ EP091971 18.60 -111.90 HU 73 1 18.60 -111.90 TC 73 18.60 -111.90 4 4 325
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 3 330
1971 EP MM 03:00:00 TS 18.90 -112.10 497 482 P_________PP___ EP091971 18.90 -112.10 HU 65 1 18.90 -112.10 TC 65 18.90 -112.10 4 4 330
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 -112.20 4 4 325
1971 EP MM 09:00:00 TS 19.30 -112.30 467 460 P_________PP___ EP091971 19.30 -112.30 HU 65 1 19.30 -112.30 TC 65 19.30 -112.30 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 6 330
1971 EP MM 15:00:00 TS 19.80 -112.60 438 426 P_________PP___ EP091971 19.80 -112.60 HU 65 1 19.80 -112.60 TC 65 19.80 -112.70 4 7 335
1971 EP MM 18:00:00 TS 20.10 -112.80 65 hurdat_epa 426 417 O_________OP___ hurdat_epa EP091971 20.10 -112.80 HU 65 1 20.10 -112.80 TC 65 20.10 -112.90 4 8 325
1971 EP MM 21:00:00 TS 20.50 -113.10 417 417 P_________PP___ EP091971 20.50 -113.10 HU 65 1 20.50 -113.10 TC 65 20.50 -113.10 4 9 315
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 10 305
1971 EP MM 03:00:00 TS 21.00 -114.00 451 447 P_________PP___ EP091971 21.00 -114.00 HU 65 1 21.00 -114.00 TC 65 21.00 -114.00 4 11 290
1971 EP MM 06:00:00 TS 21.20 -114.60 65 hurdat_epa 467 467 O_________OP___ hurdat_epa EP091971 21.20 -114.60 HU 65 1 21.20 -114.60 TC 65 21.20 -114.50 4 12 290
1971 EP MM 09:00:00 TS 21.40 -115.20 486 486 P_________PP___ EP091971 21.40 -115.20 HU 65 1 21.40 -115.20 TC 65 21.40 -115.20 4 12 290
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 12 290
1971 EP MM 15:00:00 TS 21.80 -116.40 544 544 P_________PP___ EP091971 21.80 -116.40 TS 55 0 21.80 -116.40 TC 55 21.80 -116.40 4 12 290
1971 EP MM 18:00:00 TS 22.00 -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 22.00 -117.00 4 12 290
1971 EP MM 21:00:00 TS 22.30 -117.60 616 616 P_________PP___ EP091971 22.20 -117.60 TS 45 0 22.20 -117.60 TC 45 22.30 -117.60 4 12 295
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 12 290
1971 EP MM 03:00:00 TS 22.70 -118.80 670 668 P_________PP___ EP091971 22.70 -118.80 TS 45 0 22.70 -118.80 TC 45 22.70 -118.80 2 12 290
1971 EP MM 06:00:00 TS 22.90 -119.40 45 hurdat_epa 694 692 O_________OP___ hurdat_epa EP091971 22.90 -119.40 TS 45 0 22.90 -119.40 TC 45 23.00 -119.30 2 11 295
1971 EP MM 09:00:00 TS 23.20 -119.90 702 702 P_________PP___ EP091971 23.10 -120.00 TS 45 0 23.10 -120.00 TC 45 23.20 -119.90 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 12 295
1971 EP MM 15:00:00 TS 23.60 -121.10 763 763 P_________PP___ EP091971 23.60 -121.10 TS 35 0 23.60 -121.10 TC 35 23.60 -121.10 2 12 290
1971 EP MM 18:00:00 TS 23.80 -121.70 25 hurdat_epa 799 799 O_________OP___ hurdat_epa EP091971 23.80 -121.70 TD 25 -1 23.80 -121.70 TC 25 23.70 -121.80 2 12 280
1971 EP MM 21:00:00 TS 23.80 -122.30 850 850 P_________PP___ EP091971 23.90 -122.30 TD 25 -1 23.90 -122.30 TC 25 23.80 -122.40 2 11 270
1971 EP MM 1971-08-07 00:00:00 MX 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 MX 23.70 -123.30 943 943 P_________PP___ EP091971 23.70 -123.30 TD 25 -1 23.70 -123.30 TC 25 23.70 -123.30 6 7 245
1971 EP MM 06:00:00 MX 23.50 -123.60 25 hurdat_epa 980 980 O_________OP___ hurdat_epa EP091971 23.50 -123.60 TD 25 -1 23.50 -123.60 TC 25 23.50 -123.60 6 7 235
1971 EP MM 09:00:00 MX 23.30 -123.90 1018 1018 P_________PP___ EP091971 23.30 -123.90 TD 25 -1 23.30 -123.90 TC 25 23.30 -123.90 6 7 235
1971 EP MM 12:00:00 MX 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 7 240
1971 EP MM 15:00:00 MX 23.00 -124.50 1088 1088 P_________PP___ EP091971 23.00 -124.50 TD 25 -1 23.00 -124.50 TC 25 23.00 -124.50 6 7 250
1971 EP MM 18:00:00 MX 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 22.90 -124.90 6 7 255
1971 EP MM 21:00:00 MX 22.80 -125.20 1161 1161 P_________PP___ EP091971 22.80 -125.20 TD 25 -1 22.80 -125.20 TC 25 22.80 -125.20 6 7 255
1971 EP MM 1971-08-08 00:00:00 MX 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 7 255
1971 EP MM 03:00:00 MX 22.60 -125.90 1234 1234 P_________PP___ EP091971 22.60 -125.90 TD 25 -1 22.60 -125.90 TC 25 22.60 -126.00 6 7 255
1971 EP MM 06:00:00 MX 22.50 -126.30 25 hurdat_epa 1275 1275 O_________OP___ hurdat_epa EP091971 22.50 -126.30 TD 25 -1 22.50 -126.30 TC 25 22.50 -126.30 6 8 255
1971 EP MM 09:00:00 MX 22.40 -126.70 1317 1317 P_________PP___ EP091971 22.40 -126.80 TD 25 -1 22.40 -126.80 TC 25 22.40 -126.70 6 8 255
1971 EP MM 12:00:00 MX 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 22.30 -127.20 1367 1358 P_________P____ EP091971 22.30 -127.20 TD 25 -1 22.30 -127.20 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