diff --git a/metar.html b/metar.html
index 90250d4..eed026d 100644
--- a/metar.html
+++ b/metar.html
@@ -147,9 +147,10 @@
                 }
                 
                 // Clouds
-                if (part.match(/^(BKN|OVC)/)) {
+                if (part.match(/^(BKN|OVC|VV)/)) {
                     score += 1;
-                    const ceilingAlt = parseInt(part.substring(3, 6));
+                    const altCode = part.startsWith('VV') ? part.substring(2, 5) : part.substring(3, 6);
+                    const ceilingAlt = parseInt(altCode);
                     if (!isNaN(ceilingAlt)) {
                         const ceilingFt = ceilingAlt * 100;
                         if (ceilingFt < 500) score += 8;
@@ -285,6 +286,14 @@
         }
 
         function decodeClouds(code, metarString) {
+            if (code.startsWith('VV')) {
+                const height = code.substring(2, 5);
+                if (height === '///') {
+                    return `${code}: Vertical visibility sensor inoperative`;
+                }
+                const alt = parseInt(height) * 100;
+                return `${code}: Vertical visibility ${alt.toLocaleString()} feet`;
+            }
             const coverMap = {
                 'SKC': 'Sky clear',
                 'CLR': 'Sky clear',
@@ -791,7 +800,7 @@
                     sections.push({ raw: part, decoded: decodeVisibility(part) });
                 } else if (part.match(/^([+-]|VC)?(MI|PR|BC|DR|BL|SH|TS|FZ|DZ|RA|SN|SG|IC|PL|GR|GS|UP|BR|FG|FU|VA|DU|SA|HZ|PY|PO|SQ|FC|SS|DS|TR)+$/)) {
                     sections.push({ raw: part, decoded: decodeWeather(part, metarString) });
-                } else if (part.match(/^(SKC|CLR|FEW|SCT|BKN|OVC)/)) {
+                } else if (part.match(/^(VV|SKC|CLR|FEW|SCT|BKN|OVC)/)) {
                     sections.push({ raw: part, decoded: decodeClouds(part, metarString) });
                 } else if (part.match(/^(M?\d{2})\/(M?\d{2})$/)) {
                     sections.push({ raw: part, decoded: decodeTempDew(part) });