EM USA Terms and Definitions - FEMA

Antecedent Precipitation Index: “Weighted summation of past daily precipitation amounts, used as an index of soil moisture.” (UNDHA, Disaster Management Glossary, 1992, p. 18) Anticyclone: “(area of high pressure, high): A region where barometric pressure is high or relative to that in the surrounding regions at the same level.” (UNDHA ... ................
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