灾害 · 阿留申群岛海事警报

阿留申群岛风力警报延续至夜间,预报海浪高达32英尺

基斯卡岛至阿图岛之间的风力警报将飓风级大风预警延续至周四早晨。标题所列截止时间之后,预报海浪仍然极高,时间差异问题也尚未解决。

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预计周四阿留申群岛基斯卡岛与阿图岛之间的太平洋一侧海域将出现32英尺高的海浪。白令海一侧的预报为31英尺——对于面对强风且风向会在夜间转变的船只而言,这并不能带来多少缓解。这些是预测的海况,并非经核实的实测数据。1 2

国家气象局安克雷奇办公室于2026年10月7日星期三阿拉斯加夏令时下午3:08,为这两个区域发布了飓风级大风警报。警报标题所列的警报时段延续至10月8日星期四阿拉斯加夏令时凌晨5点,比此前标题所列截止时间晚了12小时。但这一时刻并不意味着预报称海况将恢复安全:周四的预报仍称,岛链两侧都将有50节西南风。1 2 3

关键事实

  1. 65 kt预报周三夜间前段将有东南风 12
  2. 31 ft预报白令海一侧周四海浪 1
  3. 32 ft预报太平洋一侧周四海浪 2

这两份警报不能混为一谈。基斯卡岛至阿图岛之间的白令海一侧,预报称周三夜间前段将有65节东南风,随后傍晚转为55节西风,阵风达65节。预报海浪夜间将达28英尺,周四升至31英尺,并伴有阵雨。持续风速下降,而预测海浪升高。这种组合才是关键,而非某一个峰值数字。1

太平洋一侧的预报同样以65节东南风开始,但随后西风为50节,阵风达65节,而非白令海一侧的55节。周四将有50节西南风,海浪高32英尺。警报明确了各个海浪高度数值分别对应哪个指定区域,但没有说明周四的预报为何相差1英尺。2

飓风级大风,不是热带飓风

警报名称描述的是一种风力危险,并非热带飓风正向阿拉斯加逼近。国家气象局术语表将飓风级大风警报定义为:“针对持续风速或频繁阵风达64节(74 mph)或以上、预测将出现或已经出现、且并非直接与热带气旋相关的大风所发布的警报。”夜间前段65节的预报超过了这一门槛。25

由于这一定义包括频繁阵风,因此后续的每个持续风速数值都不必达到飓风级大风标准。警报也不能确定风暴路径、中心气压或发展情况。现有报道无法确定这些细节。

海浪高度数值也需要同样谨慎解读。安克雷奇沿岸预报解释说:“海浪预报值代表风浪与涌浪合成波高最高三分之一部分的平均值。”因此,32英尺的预报并非指单个海浪的最大高度。风力预报描述的是预计出现的主要风速和风向。这两种惯例都不会让预测变成观测结果。7

早前的警报将危险等级归为“极端”,紧迫程度为“立即”,应对措施为“避开”。其确定性字段标为“已观测”。这一元数据标签不能证明每个预报风速或海浪高度都曾被记录。这些警报的相关证据未能证实有人员伤亡、船只失踪、救援或损失报告。3 4 5

最新警报有哪些变化

10月6日的太平洋一侧警报预报,周三下午南风将从45节增强至70节,海浪将从21英尺增至30英尺。白令海一侧于10月7日阿拉斯加夏令时凌晨2:58和上午7:22发布的警报,预报当天下午风力也将如此增强,但海浪将从18英尺增至25英尺。此前的白令海预报还具体指出,从舍米亚岛向西,南风将从40节增强至50节,阵风达65节。这些都是已被取代的预报,并非对实测海况的描述。3 4 5

白令海早间发布的产品还预报,周三夜间海浪将达28英尺,周四将达32英尺。最新的白令海预报将周四这一数值改为31英尺;太平洋一侧的最新数值为32英尺。同时,早前预报的下午70节风力与最新预报的夜间初段65节风力,指的是不同时间段,并非对同一时刻的相互矛盾的实测数据。1 2 3 4

最明确的时间变化是警报延长至夜间。早前标题所列结束时间为10月7日阿拉斯加夏令时下午5点;最新的两份警报则将结束时间定为10月8日阿拉斯加夏令时凌晨5点。最新的太平洋一侧警报中仍有一个不太明确的问题:其单独列出的到期时间,比标题和结束字段所列时间早90分钟。1 2 3 4

一个截止时间,两种不同的结束字段

最新的太平洋一侧警报将发送时间和生效时间列为10月7日23:08 UTC,另将开始时间列为10月8日01:00 UTC。换算为阿拉斯加夏令时,分别是周三下午3:08和下午5点。其结束字段与标题一致,均为10月8日13:00 UTC,即周四阿拉斯加夏令时凌晨5点;但到期时间列为11:30 UTC,即阿拉斯加夏令时凌晨3:30。对此差异的权威解释尚未确定。仅凭较早的到期时间,不能认定危险已经解除。2 43

阿拉斯加夏令时比UTC晚8小时,而不是7小时。随白令海一侧警报提供的结构化时间戳使用了错误的时差;其标题所列阿拉斯加夏令时凌晨5点结束时间,正确对应的UTC时间是13:00。阿留申群岛西部采用的民用时间又有所不同:西经169度30分以西的岛屿使用夏威夷-阿留申夏令时,比UTC晚9小时。例如,阿达克比安克雷奇晚1小时。警报中明确标注的阿拉斯加夏令时,不应被擅自当作阿留申群岛西部当地时间来理解。1 42 43

较早的警报也存在时间问题。10月6日的太平洋一侧产品所列到期时间早于开始时间。10月7日早间的白令海产品将到期时间列为阿拉斯加夏令时下午3:30,结束时间列为下午5点。这些字段属于较早发布的产品,不应作为当前警报时间表使用。3 4 5

已知

  • 最新提供的警报点名基斯卡岛至阿图岛之间的白令海一侧和太平洋一侧海域,并将标题所列结束时间定为10月8日阿拉斯加夏令时凌晨5点。 12

未知

  • 无法独立获取完整的最新警报产品。具体区域代码和近海边界、之后是否发布替代警报或取消警报,以及实测风浪情况,均未得到核实。

后续

  • 请在标题所列截止时间查看是否有替代警报、延长或取消通知,同时留意权威的时间说明以及这些海域的观测结果。

所列地点界定了大致地理范围,并未明确精确的近海边界。一份范围更广的阿留申群岛沿岸预报涵盖向海延伸至100海里的水域,但这并不能确定任一警报的具体覆盖范围。7

对船舶运营者而言,实际结论应比“风暴将在某个时刻结束”更谨慎,也更有用。即使警报按计划结束,已发布的周四预报仍包括50节风力和31至32英尺高的海浪。标题所列截止时间并不意味着危险解除。1 2

来源

国家气象局安克雷奇警报:10月7日阿拉斯加夏令时下午3:08,白令海一侧 1;同一时刻发布的太平洋一侧警报 2;10月7日上午7:22白令海一侧警报 3;10月7日凌晨2:58白令海一侧警报 4;10月6日下午3:08太平洋一侧警报 5。

国家气象局和国家海洋和大气管理局海事指南:警报/警告说明 6;安克雷奇天气警报摘要 7;海事术语定义 8;海事天气信息指令 9;海事预报指令 10;警告/警报标准 11;关于国家气象局预报参数、天气类型和危险 12;海事天气警告 13;预报术语 14;海事服务指令 15。

二手警报记录:AreaZine,基斯卡岛至阿图岛太平洋一侧风暴警报 16;Global Incident Tracker,10月7日白令海一侧警报 17;国家气象局PKZ782沿岸预报 18;RecallRadarUSA,10月7日基斯卡岛至阿图岛警报 19;Global Incident Tracker,阿达克岛至基斯卡岛警报 20;World Natural Disasters,10月7日风暴警报记录 21及飓风级大风警报记录 22;Global Incident Tracker,10月6日白令海一侧 23和太平洋一侧记录 24。

警报定义:国家气象局飓风级大风警报术语表 25;纽约定义 26;威尔明顿标准 27;巴尔的摩/华盛顿定义 28;维基百科“飓风级大风警报” 29;国家气象局飓风术语表 30;斯波坎定义 31。

警报文档和讨论:国家海洋和大气管理局CAP文档 32;weather-gov/api讨论385 33;国家气象局CAP用户培训 34;讨论762 35;警报网络服务 36;讨论719 37;API网络服务文档 38;国家气象局CAP模块和元素 39;关于国家气象局CAP 40;API网络服务 41。

时区参考资料:Timeanddate,阿拉斯加时区 42、AKDT定义 43和安克雷奇时钟调整 44;美国海军天文台,美国时区 45;UTC转AKDT转换器 46;CalendarHours,阿拉斯加时区 47;Timeanddate.us.com,阿拉斯加时区 48;Timezone.Day,安克雷奇 49;Timezone.io,AKDT 50;WorldTimeAndWeather,安克雷奇 51。

其他API参考资料:weather-gov/api讨论201 52和讨论814 53;常见问题 54;OpenAPI副本,gist 9c399d8df0563bc94ea62861e07c4664 55;APIs.io,Weather.gov Alerts API 56;国家气象局API网络服务 57。

播出原貌 21 行
  1. Aleutian wind warnings carry a forecast of 65-knot winds and 32-foot seas.
  2. For vessels between Kiska and Attu, the danger combines powerful winds, changing wind direction, and very high seas. The latest warning headlines extend into Thursday morning, but the rough-water forecast reaches beyond that deadline. Does the stated warning end mark an easing of the danger?
  3. The warnings name two separate marine areas: Kiska-to-Attu Bering Side and Kiska-to-Attu Pacific Side. Those names establish the general location, not precise offshore boundaries. The exact marine-zone codes and the limits of each warning have not been independently established.
  4. The latest pair was issued October 7, 2026, at 3:08 p.m. Alaska Daylight Time. Both headlines give an end of 5 a.m. October 8. On the Bering Side, southeast winds are forecast at 65 knots early Wednesday night, becoming west winds of 55 knots with gusts to 65 knots in the evening.
  5. The Pacific Side's later west wind is 50 knots, not the Bering Side's 55. Thursday seas are forecast at 31 feet on the Bering Side and 32 feet on the Pacific Side. Both Thursday forecasts call for southwest winds of 50 knots.
  6. Bering Side seas are forecast at 28 feet tonight, then 31 feet Thursday, with rain showers. The wind shifts from southeast to west and then southwest. Lower subsequent sustained wind speeds do not erase the sea threat: Thursday's predicted Bering Side seas are higher than tonight's. The reason for the one-foot difference between the two sides is not established.
  7. A hurricane-force wind warning does not announce a tropical hurricane approaching Alaska. Its threshold is sustained winds, or frequent gusts, of at least 64 knots, equivalent to 74 miles an hour. The forecast of 65 knots clears that threshold.
  8. The category covers predicted or occurring winds and can include frequent gusts at the threshold. It does not require every later sustained-wind forecast to remain at hurricane force. This account does not establish the storm's track, pressure, or meteorological development, and it does not establish that the forecast winds have already occurred.
  9. No observed wind and wave outcomes have been verified for these exact waters. No casualty, vessel loss, rescue, or damage report is established in this warning account. Earlier alerts instructed recipients to avoid the hazard; that instruction is not evidence of an actual incident.
  10. A forecast of 31 or 32 feet is not a stated maximum individual wave. Forecast seas mean the average of the highest one-third of combined wind-wave and swell heights. Wind forecasts likewise describe the predominant speed and direction expected, not measured conditions.
  11. The latest warnings extend the stated headline period by twelve hours. Earlier Bering Side products ended at 5 p.m. October 7; the latest pair names 5 a.m. October 8. The earlier products also carried different forecast periods, so their 70-knot afternoon outlooks must not be treated as competing measurements against the latest 65-knot early-night forecast.
  12. A Pacific Side warning was issued October 6 at 3:08 p.m. Alaska Daylight Time. Bering Side warnings followed October 7 at 2:58 a.m. and 7:22 a.m. The latest pair arrived at 3:08 p.m., extending the headline end into Thursday morning.
  13. The October 6 Pacific outlook predicted south winds rising from 45 to 70 knots Wednesday afternoon, with seas building from 21 to 30 feet. The October 7 morning Bering outlooks predicted south winds rising from 45 to 70 knots and seas building from 18 to 25 feet. These were forecasts, not verified observations.
  14. From Shemya westward, the earlier Bering outlook specified south winds increasing from 40 to 50 knots, with gusts to 65. Both morning products forecast 28-foot seas tonight and 32 feet Thursday. The latest Bering Thursday forecast supersedes that 32-foot value with 31 feet.
  15. The older timing fields were inconsistent. The October 6 Pacific product listed onset at 13:00 UTC October 7, expiration at 11:30 UTC that day, and end at 01:00 UTC October 8. Expiration preceded onset. The morning Bering products separately listed expiration at 23:30 UTC October 7 and end at 01:00 UTC October 8.
  16. The latest Pacific alert still separates expiration from end: 11:30 UTC October 8 versus 13:00 UTC. That is 3:30 a.m. versus 5 a.m. Alaska Daylight Time, a 90-minute gap. Which field governs operationally has not been established; expiration alone does not establish cancellation.
  17. The latest Pacific alert lists sent and effective times at 23:08 UTC October 7, with onset separately at 01:00 UTC October 8, or 5 p.m. Alaska Daylight Time October 7. The first morning Bering alert likewise became effective when issued at 10:58 UTC, while separately listing onset at 13:00 UTC, or 5 a.m.
  18. Alaska Daylight Time is UTC minus eight, not minus seven. Thus 23:08 UTC means 3:08 p.m. October 7, and 13:00 UTC means 5 a.m. October 8. Western Aleutian daylight time is UTC minus nine; Adak is one hour behind Anchorage.
  19. A structured Bering Side timestamp used a minus-seven offset; that error is corrected here. Islands west of 169 degrees 30 minutes west use Hawaii-Aleutian Daylight Time, but the products' explicitly labeled Alaska Daylight Time must retain that convention. The older morning Bering expiration and end were 3:30 p.m. and 5 p.m. Alaska Daylight Time.
  20. The earlier labels were Extreme severity, Immediate urgency, Observed certainty, and Avoid response. That Observed label does not prove every forecast speed or sea height occurred. A subsequent replacement, extension, or cancellation has not been verified, nor have precise warning boundaries or observed outcomes.
  21. A broader Aleutian coastal forecast describes waters up to 100 nautical miles out, but that does not establish either warning's offshore reach. The answer to the opening question is no: the headline deadline does not forecast safe water. Even if the warnings end as scheduled at 13:00 UTC October 8, the issued Thursday forecasts still call for southwest winds of 50 knots and seas of 31 feet on the Bering Side and 32 feet on the Pacific Side.

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