灾害 · 南犹他州洪水持续报道 · 第 2 篇,共 4 篇
南犹他州洪水警报标示危险,并未说明哪些路线安全
11月1日,独立发布的洪水警报分别持续至山地标准时间下午4:30和4:45。水流上涨威胁偏远地区出行,但具体道路和峡谷是否可通行仍未核实。
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持续报道第 15 天
4 篇报道50 家媒体134 个来源
完整报道自上次报道以来的变化
9 天后
现在
11月1日,独立发布的洪水警报分别持续至山地标准时间下午4:30和4:45。水流上涨威胁偏远地区出行,但具体道路和峡谷是否可通行仍未核实。
当南犹他州的溪流仍在上涨时,游客可以安全通行哪些道路和峡谷?11月1日的洪水警报表明存在危险,但并未说明哪些路线可以安全通行:偏远地区道路可能无法通行,现有通告也未确认US-89、各处峡谷入口或具名渡口是否可通行。没有经核实的封路信息,并不意味着路线开放。1 2
截至2026年11月1日上午晚些时候,加菲尔德县和凯恩县的两个独立国家气象局警报区域,均设有当日下午的截止时间。埃斯卡兰特河流域警报持续至山地标准时间下午4:30;帕里亚-瓦维普地区警报持续至下午4:45。两项警报都涉及已经发生或即将发生的洪水,而不只是下午可能下雨。1 2
关键事实
水流读数说明了什么
据国家气象局称,山地标准时间上午7:58,US-89附近的帕里亚河水位站显示流量为每秒300立方英尺,且仍在上涨。受过培训的观测员报告称,大水镇附近的瓦维普溪流量达到或超过每秒200立方英尺。这些数字描述的是水道中的水流量,而不是道路上的水深。它们不能证明水流已漫过US-89。1
帕里亚-瓦维普警报覆盖加菲尔德县西南部和凯恩县中部,而非任一县的全部区域。可能受影响地点包括大水镇、亨利维尔、布莱斯峡谷国家公园、科达克罗姆盆地州立公园、郊狼溪、瓦维普溪和帕里亚河。通报还点名提到巴克斯金峡谷、铁丝通道和帕里亚峡谷。列入名单表明这些地点面临洪水风险,并不表示每个列出的社区、公园、步道或峡谷都已被淹。1
上午8时发布的通报延续了现有警报,而非启动新的警报。标题称警报“仍然有效”,持续至下午4:45。影响描述有意比已观察到的损害报告更宽泛:通常干涸的沟谷、狭缝峡谷、河流、溪流、河涌及其他易发洪水地点“即将发生或正在发生洪水”。部分危险可能已经出现,另一些则可能正在形成。5 6
目前无法确认US-89、巴克斯金峡谷、铁丝通道或帕里亚峡谷是否有带时间戳的具体封路或重新开放信息。一般性的出行建议无法填补这一信息空缺。土地管理局表示,大阶梯-埃斯卡兰特地区道路报告通常每周更新一次,必要时会更频繁;仅凭这一更新安排,无法确定某条具体道路在11月1日的状况。15
埃斯卡兰特地区的另一项警报
另一项警报覆盖加菲尔德县中部及凯恩县东北部的埃斯卡兰特河流域。上午7:58发布的更新称洪水仍在发生,埃斯卡兰特附近的埃斯卡兰特河流量约为每秒725立方英尺,松溪流量接近每秒300立方英尺。通告指出,埃斯卡兰特、博尔德、埃斯卡兰特河沿线水道和狭缝峡谷,以及“岩中之洞路”沿线地区已受影响或面临风险。这些是上午的观测,并非经核实的最新读数。4
较早发布的流域通报将警报截止时间定为上午10:30。之后于上午10:27发布的另一项警报将覆盖时间延长至下午4:30。因此,较早的截止时间已不再是流域警报的有效结束时间。后续通报列出埃斯卡兰特、“岩中之洞路”和该地区所有狭缝峡谷,称这些地点可能发生洪水;但并未确认该道路已封闭。2 4
上午10:22,雷达和自动水位站显示,埃斯卡兰特警报区域已降雨1至2.25英寸。另有0.5至1英寸降雨的可能。前一个范围指已经测得或估算的降雨量;后一个范围是预报值,并不代表这部分雨量当时已实际降下。2
两项警报的下午截止时间并不矛盾,它们分别适用于同两个县内地理位置不同的警报区域。同样,KUTV于11月1日早些时候报道大多数警报持续至上午10:30,该报道早于埃斯卡兰特流域后续发布的警报,并不能证明下午警报不存在。1 2 3
即使所在地没有降雨,也要保持警惕,防范洪水。干涸的沟谷、溪流和河流可能在几分钟内变成汹涌致命的水流,即使降雨发生在远处也不例外。
KUTV报道,一项范围更广的洪水观察预警覆盖南犹他州大部分地区,持续至周日晚间,其中包括华盛顿县以及锡安国家公园和国会礁国家公园。此处未确定该预警的具体结束时间。两者的区别很重要:观察预警针对更大区域内可能发生的洪水,而警报则指出洪水已经发生或即将出现的区域。官员还指出,先前的风暴加剧了径流风险。3
与我们此前报道相比有哪些变化
10月23日,HeyDay News报道,圣胡安县、加菲尔德县西南部和凯恩县发生大范围洪水;相关警报于10月22日更新,原定持续至10月23日。今天11月1日发布的通报设定了新的警报时段,并对警报区域作了更具体的描述。通报并未表明两次事件之间洪水持续不断。
我们还在10月22日报道,飓风警察局曾下令疏散古尔德沃什沿线及柳风房车公园内的人员。这些命令属于此前的事件,不应被理解为今天加菲尔德县和凯恩县警报附带的新疏散指令。
播出原貌 15 行
- Runoff is pushing streams higher and threatening backcountry travel in southern Utah. Flood warnings cover parts of Garfield and Kane counties into the afternoon, including slot canyons and normally dry washes. The immediate questions are which routes have become unusable, and how long the warnings will last.
- On October 23, we reported widespread flooding across San Juan, southwestern Garfield and Kane counties. That warning had an October 23 deadline. Today's November 1 warnings identify new time windows and more narrowly defined areas. They don't show uninterrupted flooding between those dates.
- On October 22, we also reported evacuation orders along Gould Wash and at WillowWind RV Park in Hurricane. Those orders belonged to that earlier event. The Paria-Wahweap warning began early this morning. Its eight a.m. update kept it in effect as flooding continued.
- The Escalante River Basin warning runs until four thirty p.m. Mountain Standard Time. The Paria and Wahweap area runs until four forty-five. One covers central Garfield and northeastern Kane. The other covers southwestern Garfield and central Kane.
- Big Water and Henrieville are among the communities named in the Paria-Wahweap warning. Bryce Canyon National Park and Kodachrome Basin State Park are also included, along with Coyote Creek and the Paria and Wahweap waterways. These are potentially affected locations within parts of the counties.
- The Paria River gauge near US-89 showed 300 cubic feet per second and rising just before eight this morning. Trained spotters near Big Water put Wahweap Creek at or above 200 cubic feet per second. Those figures describe the volume moving through the waterways.
- Runoff was still arriving from earlier and continuing rain, so streams could rise even after rain eased nearby. Travelers should avoid flooded roads and waterways, and backcountry routes exposed to rising washes. Whether US-89 or individual canyon access routes are passable is still unclear.
- Buckskin Gulch, Wire Pass and Paria Canyon are among the backcountry destinations named as places that could experience flooding. The warning says backcountry roads may become impassable. A location's inclusion signals exposure to the hazard, without confirming flooding at every trail or canyon.
- The Escalante River was flowing at about 725 cubic feet per second near Escalante in the morning update. Pine Creek was near 300. Those are morning observations. The earlier warning also identified Boulder and waterways and slot canyons along the Escalante and Hole-in-the-Rock Road as affected or at risk.
- By the later morning observation, radar and gauges indicated one to two point two five inches had fallen in the Escalante warned area. Another zero point five to one inch was possible. That second range was a forecast for additional rain.
- The later Escalante basin warning moved coverage beyond the earlier ten thirty a.m. deadline. It was issued shortly before that deadline and runs until four thirty this afternoon. It names Escalante, Hole-in-the-Rock Road and all area slot canyons as places that could experience flooding.
- Distant rainfall can turn a dry wash into a dangerous current within minutes. People beside a stream or inside a canyon can face flooding while their own location stays dry. Local skies alone can't tell them whether water is coming downstream.
- A broader flood watch covers much of southern Utah through Sunday evening, including Washington County and Zion and Capitol Reef national parks. That watch concerns the potential for flooding. The warnings concern flooding already happening or about to develop. Previous storms have added to the runoff concern.
- The first scheduled deadline is four thirty for the Escalante River Basin. The Paria-Wahweap warning follows fifteen minutes later, at four forty-five. Both deadlines are still ahead. The fifteen-minute difference reflects separate warning areas across the two counties.
- Whether either warning will be extended, replaced or canceled is still unresolved. Backcountry roads may be impassable, and safe access to specific routes remains uncertain. A warning reaching its scheduled end doesn't prove that a road or canyon has become safe.
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