diff --git a/src/textual/__init__.py b/src/textual/__init__.py
index e5b9181af..617752147 100644
--- a/src/textual/__init__.py
+++ b/src/textual/__init__.py
@@ -11,7 +11,7 @@ __all__ = ["log", "panic"]
 
 
 from ._context import active_app
-from ._log import LogGroup, LogVerbosity, LogSeverity
+from ._log import LogGroup, LogVerbosity
 
 if TYPE_CHECKING:
     from .app import App
@@ -38,12 +38,10 @@ class Logger:
         log_callable: LogCallable | None,
         group: LogGroup = LogGroup.INFO,
         verbosity: LogVerbosity = LogVerbosity.NORMAL,
-        severity: LogSeverity = LogSeverity.NORMAL,
     ) -> None:
         self._log = log_callable
         self._group = group
         self._verbosity = verbosity
-        self._severity = severity
 
     @property
     def log(self) -> LogCallable:
@@ -58,7 +56,6 @@ class Logger:
     def __rich_repr__(self) -> rich.repr.Result:
         yield self._group, LogGroup.INFO
         yield self._verbosity, LogVerbosity.NORMAL
-        yield self._severity, LogSeverity.NORMAL
 
     def __call__(self, *args: object, **kwargs) -> None:
         caller = inspect.stack()[1]
@@ -66,7 +63,6 @@ class Logger:
             self.log(
                 self._group,
                 self._verbosity,
-                self._severity,
                 *args,
                 _textual_calling_frame=caller,
                 **kwargs,
@@ -86,46 +82,41 @@ class Logger:
             Logger: New logger.
         """
         verbosity = LogVerbosity.HIGH if verbose else LogVerbosity.NORMAL
-        return Logger(self._log, self._group, verbosity, LogSeverity.NORMAL)
+        return Logger(self._log, self._group, verbosity)
 
     @property
     def verbose(self) -> Logger:
         """A verbose logger."""
         return Logger(self._log, self._group, LogVerbosity.HIGH)
 
-    @property
-    def critical(self) -> Logger:
-        """A critical logger."""
-        return Logger(self._log, self._group, self._verbosity, LogSeverity.CRITICAL)
-
     @property
     def event(self) -> Logger:
-        """An event logger."""
+        """Logs events."""
         return Logger(self._log, LogGroup.EVENT)
 
     @property
     def debug(self) -> Logger:
-        """A debug logger."""
+        """Logs debug messages."""
         return Logger(self._log, LogGroup.DEBUG)
 
     @property
     def info(self) -> Logger:
-        """An info logger."""
+        """Logs information."""
         return Logger(self._log, LogGroup.INFO)
 
     @property
     def warning(self) -> Logger:
-        """An info logger."""
+        """Logs warnings."""
         return Logger(self._log, LogGroup.WARNING)
 
     @property
     def error(self) -> Logger:
-        """An error logger."""
+        """Logs errors."""
         return Logger(self._log, LogGroup.ERROR)
 
     @property
     def system(self) -> Logger:
-        """A system logger."""
+        """Logs system information."""
         return Logger(self._log, LogGroup.SYSTEM)
 
 
diff --git a/src/textual/_log.py b/src/textual/_log.py
index 97211b807..e9adcef42 100644
--- a/src/textual/_log.py
+++ b/src/textual/_log.py
@@ -1,4 +1,4 @@
-from enum import Enum, auto
+from enum import Enum
 
 
 class LogGroup(Enum):
@@ -19,10 +19,3 @@ class LogVerbosity(Enum):
 
     NORMAL = 0
     HIGH = 1
-
-
-class LogSeverity(Enum):
-    """Tags log messages as being more severe."""
-
-    NORMAL = 0
-    CRITICAL = 1  # Draws attention to the log message
diff --git a/src/textual/app.py b/src/textual/app.py
index f3fcd68a2..de4a90ac0 100644
--- a/src/textual/app.py
+++ b/src/textual/app.py
@@ -34,7 +34,6 @@ from rich.traceback import Traceback
 from . import (
     Logger,
     LogGroup,
-    LogSeverity,
     LogVerbosity,
     actions,
     events,
@@ -487,7 +486,6 @@ class App(Generic[ReturnType], DOMNode):
         self,
         group: LogGroup,
         verbosity: LogVerbosity,
-        severity: LogSeverity,
         *objects: Any,
         _textual_calling_frame: inspect.FrameInfo | None = None,
         **kwargs,
@@ -523,7 +521,6 @@ class App(Generic[ReturnType], DOMNode):
                     DevtoolsLog(objects, caller=_textual_calling_frame),
                     group,
                     verbosity,
-                    severity,
                 )
             else:
                 output = " ".join(str(arg) for arg in objects)
@@ -536,7 +533,6 @@ class App(Generic[ReturnType], DOMNode):
                     DevtoolsLog(output, caller=_textual_calling_frame),
                     group,
                     verbosity,
-                    severity,
                 )
         except Exception as error:
             self._handle_exception(error)
@@ -1533,7 +1529,7 @@ class App(Generic[ReturnType], DOMNode):
     def _on_terminal_supports_synchronized_output(
         self, message: messages.TerminalSupportsSynchronizedOutput
     ) -> None:
-        log("[b green]SynchronizedOutput mode is supported")
+        log.system("[b green]SynchronizedOutput mode is supported")
         self._sync_available = True
 
     def _begin_update(self) -> None:
diff --git a/src/textual/devtools/client.py b/src/textual/devtools/client.py
index 991f740fd..e711f9d58 100644
--- a/src/textual/devtools/client.py
+++ b/src/textual/devtools/client.py
@@ -13,7 +13,7 @@ from typing import Type, Any, NamedTuple
 from rich.console import Console
 from rich.segment import Segment
 
-from .._log import LogGroup, LogVerbosity, LogSeverity
+from .._log import LogGroup, LogVerbosity
 
 
 class DevtoolsDependenciesMissingError(Exception):
@@ -218,7 +218,6 @@ class DevtoolsClient:
         log: DevtoolsLog,
         group: LogGroup = LogGroup.UNDEFINED,
         verbosity: LogVerbosity = LogVerbosity.NORMAL,
-        severity: LogSeverity = LogSeverity.NORMAL,
     ) -> None:
         """Queue a log to be sent to the devtools server for display.
 
@@ -239,7 +238,6 @@ class DevtoolsClient:
                 "payload": {
                     "group": group.value,
                     "verbosity": verbosity.value,
-                    "severity": severity.value,
                     "timestamp": int(time()),
                     "path": getattr(log.caller, "filename", ""),
                     "line_number": getattr(log.caller, "lineno", 0),
diff --git a/src/textual/devtools/redirect_output.py b/src/textual/devtools/redirect_output.py
index 3122da9ec..b7c721554 100644
--- a/src/textual/devtools/redirect_output.py
+++ b/src/textual/devtools/redirect_output.py
@@ -4,7 +4,7 @@ import inspect
 
 from typing import TYPE_CHECKING, cast
 from .client import DevtoolsLog
-from .._log import LogGroup, LogVerbosity, LogSeverity
+from .._log import LogGroup, LogVerbosity
 
 if TYPE_CHECKING:
     from .devtools.client import DevtoolsClient
@@ -101,5 +101,4 @@ class StdoutRedirector:
             DevtoolsLog(batched_log, caller=log_batch[-1].caller),
             LogGroup.PRINT,
             LogVerbosity.NORMAL,
-            LogSeverity.NORMAL,
         )
diff --git a/src/textual/devtools/renderables.py b/src/textual/devtools/renderables.py
index cd0035d47..4f6f40d7b 100644
--- a/src/textual/devtools/renderables.py
+++ b/src/textual/devtools/renderables.py
@@ -90,24 +90,29 @@ class DevConsoleLog:
         file_and_line = escape(f"{Path(self.path).name}:{self.line_number}")
         group = LogGroup(self.group).name
         time = local_time.time()
-        message = Text(
-            f":warning-emoji:  [{time}] {group}"
-            if self.severity > 0
-            else f"[{time}] {group}"
-        )
-        message.stylize("dim")
+
+        group_text = Text(group)
+        if group == "WARNING":
+            group_text.stylize("bold yellow reverse")
+        elif group == "ERROR":
+            group_text.stylize("bold red reverse")
+        else:
+            group_text.stylize("dim")
+
+        log_message = Text.assemble((f"[{time}]", "dim"), " ", group_text)
 
         table.add_row(
-            message,
+            log_message,
             Align.right(
                 Text(f"{file_and_line}", style=Style(dim=True, link=file_link))
             ),
         )
         yield table
+
         if group == "PRINT":
             yield Styled(Segments(self.segments), "bold")
         else:
-            yield Segments(self.segments)
+            yield from self.segments
 
 
 class DevConsoleNotice:
diff --git a/src/textual/messages.py b/src/textual/messages.py
index cadeaeb21..e744e19c2 100644
--- a/src/textual/messages.py
+++ b/src/textual/messages.py
@@ -59,7 +59,7 @@ class ScrollToRegion(Message, bubble=False):
 
 
 @rich.repr.auto
-class StylesUpdated(Message):
+class StylesUpdated(Message, verbose=True):
     def __init__(self, sender: MessagePump) -> None:
         super().__init__(sender)
 
diff --git a/tests/devtools/test_devtools_client.py b/tests/devtools/test_devtools_client.py
index 0f5f6e490..6f4eae22c 100644
--- a/tests/devtools/test_devtools_client.py
+++ b/tests/devtools/test_devtools_client.py
@@ -38,20 +38,6 @@ async def test_devtools_log_places_encodes_and_queues_message(devtools):
     print(repr(queued_log_data))
 
 
-{
-    "type": "client_log",
-    "payload": {
-        "group": 0,
-        "verbosity": 0,
-        "severity": 0,
-        "timestamp": 1649166819,
-        "path": "a/b/c.py",
-        "line_number": 123,
-        "segments": b"\x80\x04\x95@\x00\x00\x00\x00\x00\x00\x00]\x94(\x8c\x0crich.segment\x94\x8c\x07Segment\x94\x93\x94\x8c\x0bhello world\x94NN\x87\x94\x81\x94h\x03\x8c\x01\n\x94NN\x87\x94\x81\x94e.",
-    },
-}
-
-
 @time_machine.travel(datetime.utcfromtimestamp(TIMESTAMP))
 async def test_devtools_log_places_encodes_and_queues_many_logs_as_string(devtools):
     await devtools._stop_log_queue_processing()
@@ -64,7 +50,6 @@ async def test_devtools_log_places_encodes_and_queues_many_logs_as_string(devtoo
         "payload": {
             "group": 0,
             "verbosity": 0,
-            "severity": 0,
             "timestamp": 1649166819,
             "path": "a/b/c.py",
             "line_number": 123,