Cold Weather Season
❄️ Dec-Feb · Western Disturbances · Winter Frost
MICRO-REALM 01
Duration
- MID-DECEMBER TO FEBRUARY
- JANUARY IS THE COLDEST MONTH
- SUN SHIFTS TO SOUTHERN HEMISPHERE
MICRO-REALM 02
Temperature Gradient
- DECREASES FROM SOUTH TO NORTH
- PENINSULA REMAINS WARM (24-25°C)
- NORTHERN PLAINS DROP TO 10-15°C
MICRO-REALM 03
High Pressure System
- THERMALLY INDUCED HIGH PRESSURE
- OVER NW INDIA & PESHAWAR REGION
- DRIVES OFFSHORE WIND CIRCULATION
MICRO-REALM 04
NE Trade Winds
- OFFSHORE, DRY CONTINENTAL WINDS
- BLOW FROM LAND TO SEA
- PREVENT RAINFALL IN MOST OF INDIA
MICRO-REALM 05
Himalayan Cooling
- HEAVY SNOWFALL IN MOUNTAINS
- ACTS AS A MASSIVE COOLING AGENT
- SENDS COLD WAVES DOWN TO PLAINS
MICRO-REALM 06
Western Disturbances
- MEDITERRANEAN CYCLONIC STORMS
- BROUGHT BY SUB-TROPICAL WESTERLY JET
- ENTER NW INDIA VIA PAKISTAN/AFGHANISTAN
MICRO-REALM 07
NW Winter Rain
- CAUSED BY WESTERN DISTURBANCES
- LIGHT, STEADY 'MAHAWAT' SHOWERS
- HIGHLY BENEFICIAL FOR WHEAT
MICRO-REALM 08
Coromandel Rain
- NE TRADES PICK UP BAY OF BENGAL MOISTURE
- STRIKE TAMIL NADU COAST
- MAIN RAINY SEASON FOR THIS REGION
MICRO-REALM 09
Fog & Inversions
- TEMPERATURE INVERSIONS OVER PLAINS
- RADIATION FOG TRAPS POLLUTANTS
- CAUSES SEVERE WINTER SMOG (DELHI/NCR)
MICRO-REALM 10
Frost Occurrences
- GROUND TEMPS DROP BELOW FREEZING
- COMMON IN PUNJAB & HARYANA
- CAN DAMAGE SENSITIVE CROPS
MICRO-REALM 11
Clear Skies
- DOMINANT WEATHER OUTSIDE NW/SE
- LOW HUMIDITY, PLEASANT SUNSHINE
- HIGH DIURNAL TEMPERATURE RANGE
MICRO-REALM 12
Rabi Agriculture
- SOWN IN OCT/NOV, HARVESTED IN SPRING
- WHEAT, MUSTARD, GRAM, BARLEY
- DEPENDS ON COOL TEMPS & WINTER RAIN