"Armenian State Hydrometeorological and Monitoring Service" State Non-Commercial Organization
Simultaneous presence of several metereological phenomena are needed for the drastic increase in river water yields, particularly sharp increase in temperature and accompanying warm rains. Currently it's impossible to predict whether or not there will be intensive increases in water level in Getar and Hrazdan rivers flowing through Yerevan. Such phenomena can be forecast only 5-6 days beforehand, when upcoming warm air waves and accompanying intesive rains can be forecast.
For example, during 5-6 March 2004 warm air currents having penetrated into Armenia and accompanying heavy rains caused intensive floods and flooding of littoral areas in a number of rivers, including the Hrazdan River. However, that year snow cover was completely missing in pre-mountainous and valley areas late in February and early in March, and snow cover was available only in the zones above 1700 meters.
The opposite also happens: in February 2012 a firm and stable snow cover all over the area of Armenia was available, which made up 60-100 cm in mountainous areas and 103-127 cm in Hrazdan and Jermuk Towns, 35-40 cm in Yerevan, didn't cause any serious floods in almost in all the rivers in Armenia as a result of gradual increase in air temperature.
The Ministry for Emergency States informs that in March 2017 the Armenian State Hydrometeorological and Monitoring Service drawn up forecasts of spring floods and submitted it to RA governmental bodies, mass media, while alarm signals and warnings on the availability of risks of possible floods will be spread 4-5 days beforehand in the form of forecasts.
February 16, 2017 at 13:18