OBSERVATIONAL ORGANISATION 

RMC CHENNAI

TYPE ANDHRA PRADESH KARNATAKA KERALA TAMILNADU TOTAL
SURFACE OBSERVATORY (DEPARTMENTAL) 18 9 10 16 53
SURFACE OBSERVATORY (NON-DEPARTMENTAL) 19 18 7 24 68
PILOT BALLOON OBSERVATORY 4 3 3 3 13
RADIOSONDE/RAWIN 3 2 3 2 10
RADIOSONDE ONLY     1   1
HYDRO METEOROLOGICAL OBSERVATORY 10 8 2 2 22
RAINGUAGES (REPORTING & NON-DEPARTMENTAL) 192 260 61 157 670
SEISMOLOGICAL OBSERVATORY 2 1 2 3 8
OZONE MONITORING     2 2 4
RADIATION MONITORING 3 3 3 3 12
EVAPORATION MEASUREMENTS 7 4 4 11 26
DEW MEASUREMENTS 2 2 2 1 7
AVIATION CURRENT WEATHER OBSERVATORY 4 3 4 6 17
AERONAUTICAL FORECASTING OBSERVATORY 1 1 1 1 4
 STORM DETECTION RADAR 1 1   1 3
CYCLONE DETECTION RADAR 2   1 2 5
BAPMON  ( BACKGROUND AIR POLLUTION MONITORING) STATIONS 1   1 1 3
CYCLONE WARNING DISSEMINATION SYSTEM (CWDS) 80 5 5 58 148

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