Fire crews are now into their second day of dealing with the blaze off Oldham Road in Ripponden.
It broke out yesterday afternoon and quickly spread, at one point requiring 18 teams of firefighters plus additional support.
The latest update from West Yorkshire Fire and Rescue Service still urges people to avoid the area.
A spokesperson said this morning: “Fire development has remained steady overnight.
"The area covered is approximately 3km by 2km with an active 50 meter flame front.
"There are multiple hotspots across this area.
"Crews remain working at the scene this morning to prevent further flare ups and to target hot spots.
"Please continue to avoid the area.”

1. Ripponden moor fire: Photos from Courier readers as firefighters continue to battle Calderdale moor fire near M62
Photo by West Yorkshire Fire and Rescue Service Photo: West Yorkshire Fire and Rescue Service

2. Ripponden moor fire: Photos from Courier readers as firefighters continue to battle Calderdale moor fire near M62
Photo by Janine Brooks Essel Photo: Janine Brooks Essel

3. Ripponden moor fire: Photos from Courier readers as firefighters continue to battle Calderdale moor fire near M62
Photo by Gareth Helliwell Photo: Gareth Helliwell

4. Ripponden moor fire: Photos from Courier readers as firefighters continue to battle Calderdale moor fire near M62
Photo by Janine Brooks Essel Photo: Janine Brooks Essel