KEY FACTS AND FIGURES FROM THE NSW RAIN EMERGENCY * More than 18,000 people have been told to evacuate * 15,000 people are on standby to do the same * 870 flood rescues to early Tuesday, after 9700 calls for help * More than 200 schools closed * Rains not expected to ease until Wednesday. MID-NORTH COAST: * 15,000 people ordered to evacuate low-lying areas including Macksville, Port Macquarie, Lower Macleay, Kempsey CBD * Communities facing the worst flooding in almost a century * Another 100mm of rainfall expected before Wednesday * The Macleay and Hastings rivers overflowing in many areas. HUNTER REGION: * More rain is on the way and the danger is not over * Major flooding is occurring at Bulga in the Hunter Valley * Minor flooding may occur in the Lower Hunter from Tuesday morning. WESTERN, SOUTHERN AND NORTHERN SYDNEY: * 3000 evacuated from communities along …