---

name: assess-trail-conditions locale: wenyan-ultra source_locale: en source_commit: 82c77053 fence_basis_commit: 82c77053 translator: "Julius Brussee homage — caveman" translation_date: "2026-04-19" description: > Evaluate current trail conditions including weather, snow line, river crossings, exposure, and trail maintenance status for safety decision-making. Produces a GREEN/YELLOW/RED safety rating with actionable go/no-go recommendations. Use the day before or morning of a planned hike, during tour planning to assess seasonal viability, after unexpected weather changes on a multi-day tour, when reports suggest trail damage or closures, or before committing to an alpine or exposed route. license: MIT allowed-tools: Read Grep Glob WebFetch WebSearch metadata: author: Philipp Thoss version: "1.0" domain: travel complexity: intermediate language: multi tags: travel, hiking, safety, weather, terrain, conditions

評徑況

評今徑況為安決——氣、雪線、河渡、暴露、維。出綠/黃/紅安評附行/不行薦。

用

• 行前日或晨為行/不行決→用
• 旅謀為季可行評→用
• 多日旅意外氣變後→用
• 報示徑損或閉時→用
• 入高山或暴路前→用

入

• 必：徑名、區、近座或路點
• 必：計行日
• 可：徑難（SAC T1-T6）
• 可：路最高
• 可：知險點（河渡、暴脊、冰）
• 可：群經（影險忍）

行

一：採氣數

自多源收徑高範之氣預。

Weather Data Sources (in preference order):
┌────────────────────────┬──────────────────────────────────────┐
│ Source                 │ Best for                             │
├────────────────────────┼──────────────────────────────────────┤
│ National weather svc   │ Official forecasts with warnings     │
│ (MeteoSwiss, ZAMG,    │                                      │
│ DWD, Meteo-France)    │                                      │
├────────────────────────┼──────────────────────────────────────┤
│ Mountain-specific      │ Altitude-stratified forecasts        │
│ forecasts (e.g.,      │ (valley vs. summit conditions)       │
│ bergfex, meteoblue)   │                                      │
├────────────────────────┼──────────────────────────────────────┤
│ Avalanche bulletins    │ Snow stability (winter/spring)       │
│ (SLF, EAWS members)  │                                      │
├────────────────────────┼──────────────────────────────────────┤
│ Local webcams          │ Real-time visual conditions          │
├────────────────────────┼──────────────────────────────────────┤
│ Recent trip reports    │ On-the-ground observations           │
└────────────────────────┴──────────────────────────────────────┘

收諸數：

Weather Assessment:
┌─────────────────────┬───────────────┬───────────────────────────┐
│ Parameter           │ Valley        │ Summit/Ridge              │
├─────────────────────┼───────────────┼───────────────────────────┤
│ Temperature (C)     │               │                           │
│ Wind speed (km/h)   │               │                           │
│ Wind gusts (km/h)   │               │                           │
│ Precipitation (mm)  │               │                           │
│ Precipitation type  │               │                           │
│ Visibility (km)     │               │                           │
│ Cloud base (m)      │               │                           │
│ Freezing level (m)  │               │                           │
│ Snow line (m)       │               │                           │
│ Thunderstorm risk   │               │                           │
│ UV index            │               │                           │
└─────────────────────┴───────────────┴───────────────────────────┘

得：自至少 2 獨源之氣數，附路最低與最高之高專信。

敗：山專預不可達→用通預附高調：每升 1000 m 溫降約 6.5°C，風隨高與暴增。預異→計較劣預。

二：評地況

評徑面、雪、水、暴險今態。

Terrain Condition Factors:
┌──────────────────────┬─────────────────────────────────────────┐
│ Factor               │ Assessment Method                       │
├──────────────────────┼─────────────────────────────────────────┤
│ Snow cover           │ Compare current snow line to route's    │
│                      │ highest point. If route goes above snow │
│                      │ line, assess whether snow gear is       │
│                      │ needed and if the group has it.         │
├──────────────────────┼─────────────────────────────────────────┤
│ Ice                  │ North-facing slopes above freezing      │
│                      │ level may retain ice even in summer.    │
│                      │ Check recent overnight temps.           │
├──────────────────────┼─────────────────────────────────────────┤
│ River/stream         │ Check recent rainfall totals. Rivers    │
│ crossings            │ can be impassable 24-48 hrs after       │
│                      │ heavy rain or during snowmelt peak.     │
├──────────────────────┼─────────────────────────────────────────┤
│ Rockfall zones       │ More active after freeze-thaw cycles    │
│                      │ and rain. Early morning passage is      │
│                      │ safer (frozen in place overnight).      │
├──────────────────────┼─────────────────────────────────────────┤
│ Mud/erosion          │ Recent rain makes steep trails          │
│                      │ slippery and increases fall risk.       │
│                      │ Poles recommended.                      │
├──────────────────────┼─────────────────────────────────────────┤
│ Exposure (ridges,    │ Wind speed determines whether exposed   │
│ cliff paths)         │ sections are safe. Gusts >60 km/h make │
│                      │ exposed ridges dangerous.               │
└──────────────────────┴─────────────────────────────────────────┘

地況數源：

• 近行報（行壇、山會址）
• 屋管報（呼最近屋）
• 徑或近徑網攝
• 雪崩公（夏含雪與地信）
• 徑維局（公園處、Alpenverein）

得：路各要險點之地評，基於不過 48 時之今數。

敗：今況數不可達（遠區無近報）→設況較季均劣。呼最近職屋或山救站求地知。

三：評徑態

察計路之閉、改道、維題。

Trail Status Sources:
┌────────────────────────┬──────────────────────────────────────┐
│ Source                 │ Information type                     │
├────────────────────────┼──────────────────────────────────────┤
│ Official trail portals │ Closures, diversions, damage reports │
│ (regional/national)   │                                      │
├────────────────────────┼──────────────────────────────────────┤
│ National park websites │ Seasonal closures (wildlife, snow)   │
├────────────────────────┼──────────────────────────────────────┤
│ Hut websites/phones   │ Hut opening dates, path conditions   │
├────────────────────────┼──────────────────────────────────────┤
│ Local tourism offices  │ Recent trail work, event closures    │
├────────────────────────┼──────────────────────────────────────┤
│ Hiking community       │ Unofficial reports, photos, GPX      │
│ (forums, apps)        │ tracks showing actual paths taken     │
└────────────────────────┴──────────────────────────────────────┘

察：

1. 全閉：徑不可過或法閉（野生護、建）
2. 部閉：段閉附正改道
3. 季閉：徑季未開（雪、屋未職）
4. 損報：滑、橋沖、徑蝕
5. 事影：賽、軍演、獵季

得：徑態確（開、部閉、閉）附改道圖與時影估。

敗：徑態不可確→計潛改道。攜詳圖（非僅徑應路）使可現場航替。徑列為閉→敬之即似可過。

四：評安階

合諸評為總安評。

Safety Rating Criteria:
┌─────────┬────────────────────────────────────────────────────┐
│ Rating  │ Criteria                                           │
├─────────┼────────────────────────────────────────────────────┤
│ GREEN   │ All of:                                            │
│         │ - Weather forecast stable, no severe warnings      │
│         │ - Trail open with no significant hazards           │
│         │ - Terrain conditions normal for the season         │
│         │ - Route within group's capability                  │
│         │ - Visibility good (>5 km at altitude)              │
├─────────┼────────────────────────────────────────────────────┤
│ YELLOW  │ One or more of:                                    │
│         │ - Afternoon thunderstorm risk (>30%)               │
│         │ - Wind gusts 40-60 km/h on exposed sections        │
│         │ - Trail partially closed (diversion available)     │
│         │ - Snow patches requiring care but no special gear  │
│         │ - Recent rain making terrain slippery              │
│         │ - Route near the group's capability limit          │
│         │ Decision: Proceed with extra caution and backup    │
├─────────┼────────────────────────────────────────────────────┤
│ RED     │ Any of:                                            │
│         │ - Severe weather warning (storm, heavy snow)       │
│         │ - Wind gusts >60 km/h on exposed terrain           │
│         │ - Trail closed (no safe diversion)                 │
│         │ - Snow/ice requiring gear the group lacks          │
│         │ - Visibility <1 km on unmarked/exposed terrain     │
│         │ - River crossings at dangerous water levels        │
│         │ - Avalanche danger level 3+ on route               │
│         │ - Route clearly exceeds group's capability         │
│         │ Decision: Do not proceed. Choose alternative or    │
│         │ postpone.                                          │
└─────────┴────────────────────────────────────────────────────┘

黃評定具減動：

• 早起以越午前氣
• 況劣轉返時
• 須密監之段
• 群分時通計

得：明 GREEN、YELLOW、或 RED 評附具證。YELLOW 含可行減步與定中止觸。

敗：評不結（信不足）→默至少 YELLOW。不確當增慎非減。任一素紅→總評紅不論他。

五：生況報

合評為簡可行報。

Conditions Report Template:
═══════════════════════════════════════════════
TRAIL CONDITIONS REPORT
───────────────────────────────────────────────
Trail:    [Name / Route Number]
Date:     [Assessment date and time]
Hike date:[Planned date]
Rating:   [GREEN / YELLOW / RED]
───────────────────────────────────────────────

WEATHER SUMMARY
  Valley:  [temp]C, [wind] km/h, [precipitation]
  Summit:  [temp]C, [wind] km/h, [precipitation]
  Outlook: [trend: improving / stable / deteriorating]
  Alerts:  [any active warnings]

TERRAIN CONDITIONS
  Snow line:     [elevation] m ([above/below] route max)
  Trail surface: [dry / wet / muddy / icy / snow-covered]
  Water levels:  [normal / elevated / dangerous]
  Rockfall risk: [low / moderate / high]

TRAIL STATUS
  Status:     [open / partially closed / closed]
  Diversions: [none / details]
  Known issues:[list any damage or hazards]

RECOMMENDATIONS
  [Specific actions based on rating:]
  - [e.g., Start by 06:00 to clear ridge before noon]
  - [e.g., Carry microspikes for north-facing traverse]
  - [e.g., Turnaround by 13:00 if clouds build]

DECISION
  [GO / GO WITH CAUTION / NO-GO]
  [Reasoning in 1-2 sentences]
═══════════════════════════════════════════════

得：完、有日之況報使知行/不行決。報可分群且不需加脈可解。

敗：報不能完（如關數不可達）→述未知與其影決。明缺之不全評勝偽信。

驗

• 氣數自至少 2 獨源
• 高專預得（非僅谷氣）
• 路諸要險點之地況評
• 徑態驗（開/閉/改道）
• 安評附明證
• YELLOW 評之減定
• 況報完且日
• 報分諸群成員
• 評於起時不過 24 時舊

忌

• 谷氣偏：谷天清於高無意。恆察峰預；況可較高 1000 m 大異
• 舊數：3 日前報不靠。山況速變。行晨重評
• 樂偏：欲行計路使理化邊況。需辯案者→況或不足
• 唯一源：一預可誤。至少 2 源交核，重地/山專源
• 忽趨：今況可受而退。退趨需較瞬示更慎
• 社壓覆：永勿因群急或駕長而行。山次週仍在；君或不
• 雪線誤算：報雪線為均。北面可保雪報線下 200-500 m

參

• plan-hiking-tour —— 用此評為安評步入
• check-hiking-gear —— 按評況裝調（加微爪、加層）
• plan-tour-route —— 廣旅謀之徑況覺
• create-spatial-visualization —— 圖險區於地疊