diff --git a/index.js b/index.js
index 1ab5ba9..aad00df 100644
--- a/index.js
+++ b/index.js
@@ -300,8 +300,18 @@ function parseAllSections(gribBuffer, startIndex) {
   }
 
   const section1 = parseSection1(gribBuffer, section0.startIndex + section0.lengthOfRawData)
-  const section2 = parseSection2(gribBuffer, section1.startIndex + section1.lengthOfRawData)
-  const section3 = parseSection3(gribBuffer, section2.startIndex + section2.lengthOfRawData)
+
+  // Check if Section 2 (Local Use Section) is present - it's optional in GRIB2
+  let nextPos = section1.startIndex + section1.lengthOfRawData
+  const nextSectionNumber = gribBuffer[nextPos + 4]
+
+  let section2 = null
+  if (nextSectionNumber === 2) {
+    section2 = parseSection2(gribBuffer, nextPos)
+    nextPos = section2.startIndex + section2.lengthOfRawData
+  }
+
+  const section3 = parseSection3(gribBuffer, nextPos)
   const section4 = parseSection4(gribBuffer, section3.startIndex + section3.lengthOfRawData, section1.data.referenceTimestamp)
   const section5 = parseSection5(gribBuffer, section4.startIndex + section4.lengthOfRawData)
   const section6 = parseSection6(gribBuffer, section5.startIndex + section5.lengthOfRawData)