Synoptic analysis of Gonu storm and its effects on southeastern of Iran

The aim of this research is to recognize the dynamic and synoptic effective factors on storm formation mechanism and their effects on south –eastern of Iran. In order to synoptic analysis of storm, the synoptic maps of a few days before, contemporary and after storm extracted from NOAA organization and have been analyzed. This research indicated that main systems which lead to result in Gonu storm followed these circumstances: In sea level the anticyclone of northern Europe in 6th June divided to two parts: one of them located on Caspian sea that its southern tongue surround and induce cold air on the Iran and another one located on eastern of Mediterranean sea that continued to Sudan and supported cyclone. In 7th of June, the combination of cyclone tongue on Oman and Mediterranean Sea in 850 hp level leading to recession of African anticyclone. Therefore because of movement of cyclone to dryness land and lack of cold convection behind cyclone, cyclone disappears in the next days. In 7th of June, the northern parts of cyclone in 600 hp passed from southern and southeastern of Iran that lead to intense rainfall in region so that highest participation take place in Chabahar and Iranshahr stations,15/3 mm and 90/5 mm respectively. In 7th of June, cyclone surrounded with two anticyclones in 500 hp level: one of them located on Indian and Pakistan and another one located on Africa and Siberian cyclone recession to Khorasan. In the 8th June, the precipitation nuclease highest somewhat moved to Hormoze narrow so that the highest precipitation received in Jask station with 92/4 mm and lowest received in Chabahar station with 2/3 mm.