diff --git a/doc/api/console.md b/doc/api/console.md
index 67d82a3ed55eab..ead2c3607011a5 100644
--- a/doc/api/console.md
+++ b/doc/api/console.md
@@ -53,11 +53,15 @@ duplicate the browser's functionality exactly.
 
 ## Asynchronous vs Synchronous Consoles
 
-The console functions are asynchronous unless the destination is a file.
+The console functions are usually asynchronous unless the destination is a file.
 Disks are fast and operating systems normally employ write-back caching;
 it should be a very rare occurrence indeed that a write blocks, but it
 is possible.
 
+Additionally, console functions are blocking when outputting to TTYs
+(terminals) on OS X as a workaround for the OS's very small, 1kb buffer size.
+This is to prevent interleaving between `stdout` and `stderr`.
+
 ## Class: Console
 
 <!--type=class-->
diff --git a/doc/api/process.md b/doc/api/process.md
index 494a57ffe6be33..eb14cc7158e019 100644
--- a/doc/api/process.md
+++ b/doc/api/process.md
@@ -957,6 +957,10 @@ event and that writes can block when output is redirected to a file (although
 disks are fast and operating systems normally employ write-back caching so it
 should be a very rare occurrence indeed.)
 
+Additionally, `process.stderr` and `process.stdout` are blocking when outputting
+to TTYs (terminals) on OS X as a workaround for the OS's very small, 1kb
+buffer size. This is to prevent interleaving between `stdout` and `stderr`.
+
 ## process.stdin
 
 A `Readable Stream` for stdin (on fd `0`).
@@ -1007,6 +1011,10 @@ event and that writes can block when output is redirected to a file (although
 disks are fast and operating systems normally employ write-back caching so it
 should be a very rare occurrence indeed.)
 
+Additionally, `process.stderr` and `process.stdout` are blocking when outputting
+to TTYs (terminals) on OS X as a workaround for the OS's very small, 1kb
+buffer size. This is to prevent interleaving between `stdout` and `stderr`.
+
 To check if Node.js is being run in a TTY context, read the `isTTY` property
 on `process.stderr`, `process.stdout`, or `process.stdin`:
 
@@ -1102,4 +1110,4 @@ Will print something like:
 [Signal Events]: #process_signal_events
 [Stream compatibility]: stream.html#stream_compatibility_with_older_node_js_versions
 [the tty docs]: tty.html#tty_tty
-[`JSON.stringify()`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify
\ No newline at end of file
+[`JSON.stringify()`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify
diff --git a/lib/tty.js b/lib/tty.js
index f3f84ca5a6e9f7..54a7b756ec9544 100644
--- a/lib/tty.js
+++ b/lib/tty.js
@@ -59,6 +59,13 @@ function WriteStream(fd) {
     writable: true
   });
 
+  // Prevents interleaved stdout/stderr output in OS X terminals.
+  // As noted in the following reference, local TTYs tend to be quite fast and
+  // this behaviour has become expected due historical functionality on OS X,
+  // even though it was originally intended to change in v1.0.2 (Libuv 1.2.1).
+  // Ref: https://github.com/nodejs/node/pull/1771#issuecomment-119351671
+  if (process.platform === 'darwin') this._handle.setBlocking(true);
+
   var winSize = [];
   var err = this._handle.getWindowSize(winSize);
   if (!err) {