UNDRO 86/1102
COLOMBIA - VOLCANIC ERUPTION
UNDRO INFORMATION REPORT NO. 1
09 MAY 1986

SITUATION

1. RUIZ VOLCANO OBSERVATORY AT MANIZALES REGISTERED VOLCANIC TREMORS STARTING 22.00 ON 4 MAY 1986 AND RESUMING INTERMITTENTLY UNTIL 15.00 ON 8 MAY. STRONGEST TREMOR (3 ON RICHTER SCALE) WAS REGISTERED DURING 6 - 7 MAY.

2. HEAD OF NATIONAL EMERGENCY COMMITTEE VISITED AREA 8 MAY 1986 AND IT WAS DECIDED TO MAINTAIN ALERT STATUS UNTIL ACTIVITY DECLINED TO LEVEL REGISTERED DURING PAST TWO MONTHS BEFORE BEGINNING RECENT TREMORS.

3. UNDRO IS MONITORING SITUATION THROUGH REGULAR CONTACT WITH RESIDENT REPRESENTATIVE AND OBSERVATORY AT MANIZALES.

ESSAAFI UNDRO GENEVA 28148

UNDRO 86/1439

COLOMBIA - RUIZ VOLCANO ALERT
UNDRO INFORMATION REPORT NO. 2
14 JUNE 1986

UNDRO/UNDP RESIDENT COORDINATOR REPORTS FURTHER INCREASE IN ACTIVITY AT VOLCANO NEVADO DEL RUIZ. DECISION TAKEN BY PRESIDENCY THAT AREA WITHIN 10 KMS RADIUS RUIZ CRATER TO BE EVACUATED AS WELL AS PEOPLE LIVING IN BOTTOMS OF FIVE MAIN RIVER VALLEYS. 1,700 PEOPLE ESTIMATED AFFECTED BEING MOVED TO TEMPORARY SHELTER.

ESSAAFI UNDRO GENEVA 28148

DPR 310 COL'85(1)