29:
491:
571:
339:
415:
263:
655:
215:
was a very inactive season, featuring only seven disturbances, five tropical cyclones, and two severe tropical cyclones. The season featured only one landfalling storm, Cyclone Dawn. Dawn formed very late, on
February 10, and the last storm, Tropical Depression Isa, dissipated early, on April 19. On
629:
was making its final descent over the splashdown zone when they spotted a weakening Helen as they were re-entering the Earth's atmosphere. Mission control had been tracking the storm to make sure it did not interfere with the mission's re-entry.
235:
1471:
706:. It strengthened to a Category 1 tropical cyclone (Australian scale), but it remained a tropical depression (SSHWS). It was last noted on April 19, as it dissipated.
237:
1193:
1503:
671:
168:
1608:
1458:
753:
before curving back toward the southwest. The system entered the
Australian region during 15 January, where it subsequently became Severe Tropical
542:
movement while strengthening to a tropical cyclone before weakening due to the cold waters and wind shear. Gillian was last noted, far south of
721:
1486:
173:
749:. The system was subsequently tracked by infrequent satelitte imagery, which revealed that it slowly completed a cyclonic loop near the
618:. It traveled to the west, strengthening as Tropical Cyclone Helen before weakening. It was last noted on April 17, south-southwest of
1424:
1412:
1407:
1402:
1397:
1392:
1387:
1382:
1377:
1372:
1366:
203:
199:
714:
During
January 5, the Australian Bureau of Meteorology first noted the existence of a weak tropical depression over the eastern
1613:
1497:
1492:
1317:
1313:
1451:
1582:
191:
187:
310:
as a tropical low. It strengthened to a
Category 2 tropical cyclone (Australian scale) before dissipating, northwest of
807:
1444:
1179:
1587:
1232:
1530:
1525:
1287:
1283:
390:. It peaked as a Category 1 tropical cyclone (SSHWS) or Category 3 severe tropical cyclone (Australian scale).
183:
234:
1542:
1537:
1297:
1293:
1353:
1565:
1560:
1307:
1303:
28:
1257:
546:
as it dissipated. It was strengthened to a equivalent of a tropical storm on the SSHWS scale.
718:, however, it has since been determined that the depression developed during January 2 near
790:
152:
1347:
702:
It was unknown if the precursor to Isa was noted to the southeast, or to the southwest of
220:. It later crossed into the Australian Region, where it strengthened onto Severe Tropical
8:
307:
1224:
1216:
462:. It moved to the south-southeast before it was last noted on March 6 to the north of
1436:
1228:
459:
1138:
1467:
1208:
543:
463:
387:
1163:
750:
703:
1602:
736:
723:
689:
601:
521:
445:
369:
293:
95:
1342:
820:
754:
221:
1220:
1322:
693:
605:
525:
458:
Severe
Tropical Cyclone Emma originated as a depression to the west of
449:
383:
373:
297:
99:
1212:
715:
626:
490:
217:
570:
534:
A disturbance developed to a depression, to the south-southwest of
338:
311:
414:
386:
on
February 11, and was last noted on February 25 to the north of
262:
216:
January 2, a tropical low developed onto a weak depression on the
1327:
654:
615:
233:
1337:
1352:
619:
535:
1260:. International Best Track Archive for Climate Stewardship
401:
Category 3 severe tropical cyclone (Australian scale)
325:
Category 3 severe tropical cyclone (Australian scale)
1332:
757:
before making landfall on
Queensland during 17 January.
1466:
1207:(1). The Meteorological Society of New Zealand: 25.
1139:"Report by Director of Meteorology on Cyclone 'Ada'"
641:
Category 1 tropical cyclone (Australian scale)
614:A tropical low developed to a depression, south of
557:
Category 1 tropical cyclone (Australian scale)
477:
Category 1 tropical cyclone (Australian scale)
254:
Category 2 tropical cyclone (Australian scale)
776:
1178:A guide on how to read the database is available
796:
785:
1600:
317:
1185:
393:
1169:. Australian Bureau of Meteorology. 2023-06-30
1156:
1060:
1027:
994:
961:
928:
895:
169:1969â70 South-West Indian Ocean cyclone season
1452:
406:Category 1 tropical cyclone (SSHWS)
330:Category 1 tropical cyclone (SSHWS)
1258:"1970 Tropical Cyclone Emma (1970058S15200)"
1136:
1070:
1037:
1004:
971:
938:
905:
838:
1065:
1032:
999:
966:
933:
900:
833:
828:
469:
1459:
1445:
1191:
1056:
1023:
990:
957:
924:
891:
867:
862:
858:
824:
872:
768:1969â70 South Pacific cyclone season
549:
246:
174:1969â70 Australian region cyclone season
1354:1960â1969 South Pacific cyclone seasons
633:
1601:
1164:"Australian Tropical Cyclone Database"
184:South Pacific tropical cyclone seasons
1440:
1351:
1132:
1130:
1128:
1609:1969â70 South Pacific cyclone season
1312:North Indian Ocean cyclone seasons:
213:1969â70 South Pacific cyclone season
22:1969â70 South Pacific cyclone season
1292:Eastern Pacific hurricane seasons:
760:
227:
13:
1125:
962:Category 3 severe tropical cyclone
929:Category 3 severe tropical cyclone
800:
306:Dawn formed on February 16 on the
14:
1625:
1323:World Meteorological Organization
1302:Western Pacific typhoon seasons:
1276:
1328:Australian Bureau of Meteorology
709:
653:
646:Tropical depression (SSHWS)
569:
489:
413:
337:
261:
27:
1069:
1064:
1036:
1031:
1003:
998:
970:
965:
937:
932:
904:
899:
871:
866:
837:
832:
1250:
1103:965 hPa (28.50 inHg)
1071:990 hPa (29.23 inHg)
1038:990 hPa (29.23 inHg)
1005:990 hPa (29.23 inHg)
972:965 hPa (28.50 inHg)
939:965 hPa (28.50 inHg)
906:980 hPa (28.94 inHg)
839:997 hPa (29.44 inHg)
354:February 11 â February 25
278:February 16 â February 19
1:
1614:South Pacific cyclone seasons
1118:
318:Severe Tropical Cyclone Dolly
1343:Joint Typhoon Warning Center
1282:Atlantic hurricane seasons:
438:130 km/h (80 mph)
394:Severe Tropical Cyclone Emma
382:Dolly formed to the east of
362:130 km/h (80 mph)
314:on the South Pacific basin.
286:100 km/h (65 mph)
91: âĒ Lowest pressure
7:
1333:Fiji Meteorological Service
1100:130 km/h (80 mph)
1061:Category 1 tropical cyclone
1028:Category 1 tropical cyclone
995:Category 1 tropical cyclone
967:130 km/h (80 mph)
934:130 km/h (80 mph)
901:100 km/h (65 mph)
896:Category 2 tropical cyclone
682:75 km/h (45 mph)
594:75 km/h (45 mph)
562:Tropical storm (SSHWS)
514:85 km/h (55 mph)
482:Tropical storm (SSHWS)
10:
1630:
1137:Gibbs, W. J. (June 1970).
1095:January 2 â April 19, 1970
1066:75 km/h (45 mph)
1033:75 km/h (45 mph)
1000:75 km/h (45 mph)
834:55 km/h (35 mph)
430:February 27 â March 6
241:
77: âĒ Maximum winds
1575:
1552:
1517:
1479:
1360:
1086:
843:Solomon Islands, Vanuatu
799:
782:
779:
773:
678:
666:
650:
645:
640:
590:
582:
566:
561:
556:
510:
502:
486:
481:
476:
434:
426:
410:
405:
400:
358:
350:
334:
329:
324:
282:
274:
258:
253:
182:
164:
159:
147:
139:
131:
123:
115:
110:
106:
90:
76:
68:
64:
59:
51:
43:
38:
26:
21:
586:April 13 â April 17
470:Tropical Cyclone Gillian
132:Severe tropical cyclones
1504:South-West Indian Ocean
1144:. Bureau of Meteorology
506:April 7 â April 11
16:Tropical cyclone season
1338:New Zealand MetService
863:Unknown-strength storm
550:Tropical Cyclone Helen
52:Last system dissipated
247:Tropical Cyclone Dawn
1491:North Indian Ocean (
1238:on November 29, 2014
783:Areas affected
780:Peak intensity
634:Tropical Cyclone Isa
1201:Weather and Climate
1194:"What's in a Name?"
1192:Smith, Ray (1990).
829:Tropical depression
770:
733: /
625:On April 17, 1970,
538:. It continued its
308:Gulf of Carpentaria
151:$ 5 million (1970
111:Seasonal statistics
84:10-minute sustained
44:First system formed
39:Seasonal boundaries
1576:Non-seasonal lists
1087:Season aggregates
766:
116:Total disturbances
33:Season summary map
1596:
1595:
1487:Australian region
1468:Tropical cyclones
1434:
1433:
1427:
1369:
1115:
1114:
925:February 11 â 25
892:February 10 â 19
700:
699:
685:
674:) â April 19
612:
611:
597:
532:
531:
517:
460:Wallis and Futuna
456:
455:
441:
380:
379:
365:
304:
303:
289:
209:
208:
124:Tropical cyclones
80:130 km/h (80 mph)
47:February 10, 1970
1621:
1461:
1454:
1447:
1438:
1437:
1422:
1364:
1349:
1348:
1270:
1269:
1267:
1265:
1254:
1248:
1247:
1245:
1243:
1237:
1231:. Archived from
1213:10.2307/44279572
1198:
1189:
1183:
1177:
1175:
1174:
1168:
1160:
1154:
1153:
1151:
1149:
1143:
1134:
1072:
1067:
1062:
1039:
1034:
1029:
1006:
1001:
996:
973:
968:
963:
940:
935:
930:
907:
902:
897:
874:
869:
864:
840:
835:
830:
812:Wind speed
802:
794:
771:
765:
761:Seasonal effects
748:
747:
745:
744:
743:
738:
734:
731:
730:
729:
726:
683:
661:
660:
657:
638:
637:
595:
577:
576:
573:
554:
553:
544:Marshall Islands
515:
497:
496:
493:
474:
473:
464:French Polynesia
439:
421:
420:
417:
398:
397:
388:French Polynesia
363:
345:
344:
341:
322:
321:
287:
269:
268:
265:
251:
250:
228:Seasonal summary
160:Related articles
140:Total fatalities
72:Dolly & Emma
31:
19:
18:
1629:
1628:
1624:
1623:
1622:
1620:
1619:
1618:
1599:
1598:
1597:
1592:
1571:
1548:
1513:
1475:
1465:
1435:
1430:
1356:
1279:
1274:
1273:
1263:
1261:
1256:
1255:
1251:
1241:
1239:
1235:
1196:
1190:
1186:
1172:
1170:
1166:
1162:
1161:
1157:
1147:
1145:
1141:
1135:
1126:
1121:
1116:
825:January 2 â 15
788:
787:
769:
763:
751:Solomon Islands
741:
739:
735:
732:
727:
724:
722:
720:
719:
712:
704:Solomon Islands
687:
662:
658:
652:
636:
599:
578:
574:
568:
552:
519:
498:
494:
488:
472:
443:
422:
418:
412:
396:
367:
346:
342:
336:
320:
291:
270:
266:
260:
249:
244:
239:
238:
236:
230:
186:
178:
81:
60:Strongest storm
34:
17:
12:
11:
5:
1627:
1617:
1616:
1611:
1594:
1593:
1591:
1590:
1588:South Atlantic
1585:
1579:
1577:
1573:
1572:
1570:
1569:
1563:
1556:
1554:
1550:
1549:
1547:
1546:
1540:
1534:
1528:
1521:
1519:
1515:
1514:
1512:
1511:
1509:South Pacific
1506:
1501:
1495:
1489:
1483:
1481:
1477:
1476:
1464:
1463:
1456:
1449:
1441:
1432:
1431:
1429:
1428:
1420:
1415:
1410:
1405:
1400:
1395:
1390:
1385:
1380:
1375:
1370:
1361:
1358:
1357:
1346:
1345:
1340:
1335:
1330:
1325:
1320:
1310:
1300:
1290:
1278:
1277:External links
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1068:
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1058:
1057:April 14 â 19
1055:
1051:
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1040:
1035:
1030:
1025:
1024:April 13 â 17
1022:
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764:
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759:
737:15.8°S 165.1°E
711:
708:
698:
697:
680:
679:Peak intensity
676:
675:
668:
664:
663:
651:
648:
647:
643:
642:
635:
632:
610:
609:
592:
591:Peak intensity
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587:
584:
580:
579:
567:
564:
563:
559:
558:
551:
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530:
529:
512:
511:Peak intensity
508:
507:
504:
500:
499:
487:
484:
483:
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478:
471:
468:
454:
453:
436:
435:Peak intensity
432:
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408:
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402:
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378:
377:
360:
359:Peak intensity
356:
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284:
283:Peak intensity
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103:
92:
88:
87:
78:
74:
73:
70:
66:
65:
62:
61:
57:
56:
55:April 19, 1970
53:
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36:
35:
32:
24:
23:
15:
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1583:Mediterranean
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1484:
1482:
1478:
1473:
1469:
1462:
1457:
1455:
1450:
1448:
1443:
1442:
1439:
1426:
1421:
1419:
1416:
1414:
1411:
1409:
1406:
1404:
1401:
1399:
1396:
1394:
1391:
1389:
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1384:
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1379:
1376:
1374:
1371:
1368:
1363:
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1140:
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1111:
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1049:
1046:
1043:
1041:
1026:
1020:
1019:
1016:
1013:
1010:
1008:
993:
991:April 7 â 11
987:
986:
983:
980:
977:
975:
960:
954:
953:
950:
947:
944:
942:
927:
921:
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917:
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861:
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827:
822:
819:
818:
814:
811:
809:
806:
805:
792:
777:Dates active
772:
758:
756:
752:
746:
717:
710:Other systems
707:
705:
695:
691:
681:
677:
673:
672:entered basin
669:
665:
656:
649:
644:
639:
631:
628:
623:
621:
617:
607:
603:
593:
589:
585:
581:
572:
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560:
555:
547:
545:
541:
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67:
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58:
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50:
46:
42:
37:
30:
25:
20:
1508:
1417:
1262:. Retrieved
1252:
1240:. Retrieved
1233:the original
1204:
1200:
1187:
1171:. Retrieved
1158:
1146:. Retrieved
958:March 2 â 4
742:-15.8; 165.1
713:
701:
624:
613:
539:
533:
457:
381:
305:
212:
210:
195:
148:Total damage
83:
1264:October 21,
755:Cyclone Ada
740: /
222:Cyclone Ada
1603:Categories
1524:Atlantic (
1518:Hurricanes
1365:Previous:
1173:2023-06-30
1119:References
859:January 4
670:April 14 (
384:Luganville
1559:Pacific (
1536:Pacific (
1242:March 28,
1229:201717866
1092:8 systems
815:Pressure
716:Coral Sea
688:990
627:Apollo 13
600:990
520:980
444:965
368:965
292:980
218:Coral Sea
1553:Typhoons
1480:Cyclones
1474:and 1970
1221:44279572
1148:22 April
1080:Unknown
1077:Unknown
1047:Unknown
1044:Unknown
1014:Unknown
1011:Unknown
988:Gillian
981:Unknown
978:Unknown
948:Unknown
945:Unknown
915:Unknown
912:Unknown
882:Unknown
879:Unknown
849:Unknown
846:Unknown
808:Category
728:165°06âēE
684:(10-min)
667:Duration
596:(10-min)
583:Duration
516:(10-min)
503:Duration
440:(10-min)
427:Duration
364:(10-min)
351:Duration
312:Brisbane
288:(10-min)
275:Duration
1425:1970â71
1418:1969â70
1413:1968â69
1408:1967â68
1403:1966â67
1398:1965â66
1393:1964â65
1388:1963â64
1383:1962â63
1378:1961â62
1373:1960â61
1367:1959â60
873:Unknown
868:Unknown
797:Deaths
725:15°48âēS
692: (
604: (
524: (
448: (
372: (
296: (
242:Systems
204:1971â72
200:1970â71
196:1969â70
1423:Next:
1227:
1219:
1021:Helen
922:Dolly
856:Alice
786:Damage
659:
616:Tuvalu
575:
495:
419:
343:
267:
1236:(PDF)
1225:S2CID
1217:JSTOR
1197:(PDF)
1167:(CSV)
1142:(PDF)
955:Emma
889:Dawn
774:Name
192:1960s
188:1950s
1566:1970
1561:1969
1543:1970
1538:1969
1531:1970
1526:1969
1498:1970
1493:1969
1472:1969
1318:1970
1314:1969
1308:1970
1304:1969
1298:1970
1294:1969
1288:1970
1284:1969
1266:2019
1244:2014
1180:here
1150:2017
1054:Isa
801:Refs
791:US$
694:mbar
620:Fiji
606:mbar
536:Fiji
526:mbar
450:mbar
374:mbar
298:mbar
211:The
100:mbar
94:965
69:Name
1470:in
1209:doi
821:Ada
690:hPa
602:hPa
522:hPa
446:hPa
370:hPa
294:hPa
153:USD
96:hPa
1605::
1316:,
1306:,
1296:,
1286:,
1223:.
1215:.
1205:10
1203:.
1199:.
1127:^
622:.
466:.
224:.
202:,
198:,
194:,
190:,
1568:)
1545:)
1533:)
1500:)
1460:e
1453:t
1446:v
1268:.
1246:.
1211::
1182:.
1176:.
1152:.
793:)
789:(
696:)
686:;
608:)
598:;
540:L
528:)
518:;
452:)
442:;
376:)
366:;
300:)
290:;
155:)
143:6
135:2
127:5
119:7
102:)
98:(
86:)
82:(
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