From d4e3a0e001194329f12c8fd0e44f621d2c545767 Mon Sep 17 00:00:00 2001
From: Tanner Collin <git@tannercollin.com>
Date: Sat, 14 Feb 2026 16:32:39 -0700
Subject: [PATCH] fix: Parse directional and locally worse VIS remarks

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>
---
 metar.html | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/metar.html b/metar.html
index 0e7c2b7..a5b235b 100644
--- a/metar.html
+++ b/metar.html
@@ -334,8 +334,29 @@
                 },
                 // VIS
                 {
-                    match: p => p[0] === 'VIS' && p.length > 2,
-                    decode: p => ({ consumed: 3, text: `  - VIS ${p[1]} ${p[2]}: Sector visibility to the ${p[1]} of ${p[2]} statute miles` })
+                    match: p => p[0] === 'VIS' && p.length > 2 && (isDirection(p[1]) || (p[1] === 'LW' && p.length > 3 && isDirection(p[3]))),
+                    decode: p => {
+                        // VIS LW <visibility> <direction>
+                        if (p[1] === 'LW') {
+                            const visibility = p[2].replace('SM', '');
+                            const direction = p[3];
+                            return {
+                                consumed: 4,
+                                text: `  - VIS LW ${p[2]} ${direction}: Visibility locally worse, ${visibility} statute miles to the ${decodeDirection(direction).replace(/ to /g, '-')}`
+                            };
+                        }
+
+                        // VIS <direction> <visibility>
+                        if (isDirection(p[1])) {
+                            const visibility = p[2].replace('SM', '');
+                            const direction = p[1];
+                            const raw_vis = p[2];
+                            return {
+                                consumed: 3,
+                                text: `  - VIS ${direction} ${raw_vis}: Sector visibility ${visibility} statute miles to the ${decodeDirection(direction).replace(/ to /g, '-')}`
+                            };
+                        }
+                    }
                 },
                 // VIRGA
                 {