UNDRO 89/1817
COLOMBIA - VOLCANIC ERUPTION
UNDRO INFORMATION REPORT NO. 1
02 SEPTEMBER 1989

1. ON 1ST SEPTEMBER NATIONAL OFFICE FOR EMERGENCY ATTENTION IN THE PRESIDENT'S OFFICE IN AGREEMENT WITH THE LOCAL EMERGENCY COMITTEE OF CALDAS AND TOLIMA HAVE DECLARED HIGHEST ALERT LEVEL (RED) FOR POPULATION LIVING WITHING 10 SQUARE KM OF CRATER OF VOLCANO DEL RUIZ.

2. UNDP/UNDRO RESIDENT REPRESENTATIVE REPORTS EVACUATIONS ENFORCED IN CALDAS AMD TOLIMA AREAS. SURFACE AND AIR TRANSPORTATION INTERRUPTED DUE TO SUBSTANTIALLY INCREASED VOLCANIC ACTIVITY. LARGE AMOUNTS OF ASH ACCUMULATING ON HOUSESE IN LERIDA AND MANIZALES. NATIONAL VOLCANOLOGICAL OBSERVATORY AND NATIONAL AND LOCAL EMERGENCY COMMITTEES CLOSELY MONITORING SITUATION. LOCAL UN REPRESENTATIVES IN CONSTANT CONTACT WITH AUTHORITIES.

3. DONORS WILL BE KEPT INFORMED OF FURTHER DEVELOPMENTS.

ESSAAFI UNDRO GENEVA 28148

UNDRO 89/1818

COLOMBIA - VOLCANIC ERUPTION
UNDRO INFORMATION REPORT NO. 2
02 SEPTEMBER 1989

1. INFORMATION RECEIVED DIRECTLY FROM NATIONAL OFFICE FOR EMERGENCY ATTENTION INDICATES DECREASE OF VOLCANIC ACITIVITY SINCE AFTERNOON 1ST SEPTEMBER. LEVEL OF ASH AND OTHER EMISSIONS ALSO MUCH LOWER.

2. ALERT LEVEL ACCORDINGLY CHANGED TO ORANGE, SECOND HIGHEST, HOWEVER MONITORING OF DEVELOPMENTS CONTINUOUSLY MAINTAINED.

3. POPULATION EXPECTED TO RETURN TO NORMAL, BUT ADVISED TO LISTEN TO RADIO ANNOUNCEMENTS ON SITUATION.

4. AIR TRANSPORTATION STILL RESTRICTED. SURFACE TRANSPORT RETURNING TO NORMAL, EXCEPT ROUTE MURILLO - LA MARGARITA WHICH INTERRUPTED.

ESSAAFI UNDRO GENEVA 28148

UNDRO 89/1846

COLOMBIA - VOLCANIC ERUPTION
UNDRO INFORMATION REPORT NO. 3
06 SEPTEMBER 1989

1. NATIONAL VOLCANOLOGICAL OBSERVATORY REPORTS THAT NEVADO DEL RUIZ GENERAL ACTIVITY NOW AT STEADY LEVEL WITH MODERATE DEGREE OF INTENSITY. ORANGE ALERT STILL MAINTAINED. EARTHQUAKES WITH MAGNITUDE UP TO 2.8 ON RICHTER SCALE UNDER CRATER REPORTED.

2. CRATER AND ICE CAP ARE BEING CONTINUOUSLY OBSERVED FROM AIRCRAFT. ALSO STATUS OF RIVER BEING CLOSELY MONITORED.

ESSAAFI UNDRO GENEVA 28148

DPR 310 COL'89(1)