One of the West Country's biggest hospitals has been placed on black alert, after a dramatic rise in the emergency admissions.
On Thursday, 125 ambulances brought patients to the Royal Cornwall Hospital - 30 more than normal.
Patients are being told not to come to casualty unless it is a genuine emergency.
An "unprecedented" demand for services at the Royal Cornwall Hospital have placed it back on Black Alert status for the fourth time this year.
This is the highest level of alert, which usually means bed capacity has been reached and that patients arriving at A&E will have to be taken to another hospital.
People are being told to stay away unless it is a genuine emergency - and where possible pick up relatives and friends as soon as possible, when they are ready to go home from hospital.
- Read more: What does Black Alert mean?
People are being asked to choose what kind of care they need carefully - the NHS 111 helpline can give advice as to the nearest and most appropriate service.
You can also visit the NHS Choices website.
Hospitals in Bristol, North Somerset and South Gloucestershire have declared they are on black alert.
The Bristol Royal Hospital for Children, the Bristol Royal Infirmary, Southmead and Weston General Hospital are among those placed on the system-wide black escalation status on Monday.
It comes after a huge influx of people using the A&E system and health bosses are now urging people to only use A&E for life-threatening emergencies.
People are instead encouraged to visit walk in centres, pharmacists or call NHS helpline, 111.
It's the second time in a month the hospitals have declared the status.
Dr Ed Ford, Somerset CCG's GP Lead for Urgent Care Services urges the public to use their local health services responsibly by not using busy hospital A&E departments or calling 999 for an emergency ambulance with only minor illness.
The advice comes after some health and social care systems in the region declared 'Black Alert'status.
Operations have been postponed and A&E departments are struggling to meet targets as hospitals across the region remain on 'Black Alert'.
The exact number of operations cancelled haven't been disclosed.
The Bristol Royal Hospital for Children, the Bristol Royal Infirmary, Southmead and Weston General Hospital all remain in system-wide black escalation status.
Taunton's Musgrove Park Hospital and Bath's Royal United Hospital are on 'red alert' - one level below black.
5 out of 8 of our hospitals didn't hit their A&E target of seeing 95% of patients within 4 hours over the weekend.
Some were even falling as low as 60%.
The severe pressure on emergency services at Yeovil District Hospital has eased slightly, with the hospital no longer at "black alert".
The alert status has now been downgraded to "red alert", the second highest possible level of severity. The hospital is still very busy and says it is facing significant operational challenges.
Black alert occurs when the hospital can no longer deal with the number of patients coming into A&E because too few are being discharged.
HOSPITALS STILL ON BLACK ALERT
- Southmead Hospital
- the BRI
- Bristol Royal Hospital for Children
- Weston General Hospital
WHAT DOES RED ALERT MEAN?
A hospital on red alert means that wards are still very busy with limited bed space. All non-urgent work and clinics are usually cancelled so that resourced can be concentrated on the emergency services.
It also means urgent actions are required across the local health system by all partners to prevent the hospital going into black alert.
Bristol CCG Clinical Lead for Urgent and local GP Dr Peter Goyder has condemned those using A&E unnecessarily and warns it may lead to continued black alert status.
So hospitals have announced that they're on 'black alert' - but what does this actually mean?
This is the highest level of alert, which usually means bed capacity has been reached and that patients arriving at A&E will have to be taken to another hospital. Sometimes routine operations will be cancelled to free up bed space.
NHS England classifies a black alert as a "serious incident". It means the system is under severe pressure and is unable to deliver certain actions and comprehensive emergency care.
It also means there is potential for emergency care and safety to be compromised. Decisive action must be taken to restore the hospital's capacity and ensure patient safety.