Meteorology Not Modelology™

Calm Before A Major Winter Storm

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London, GB
5:56 am, Mar 12, 2026
weather icon 46°C | °F
L: 44° H: 47°
broken clouds
Humidity 83 %
Pressure 1015 hPa
Wind 14 mph SW
Wind Gust Wind Gust: 0 mph
Precipitation Precipitation: 0 inch
Dew Point Dew Point: 0°
Clouds Clouds: 75%
Rain Chance Rain Chance: 0%
Snow Snow: 0
Visibility Visibility: 6 mi
Air Quality Air Quality:
Sunrise Sunrise: 6:21 am
Sunset Sunset: 5:58 pm

UPDATED 02/21/26 10:45 AM

Tranquil conditions today will give way to a developing winter storm by tomorrow afternoon.  Blizzard conditions are a threat by tomorrow evening into Monday morning.

Please click here for details on the storm’s timeline.

TODAY

A trough will produce variable clouds and isolated showers.  Winds will be from the northwest at 5 to 15 mph.  High temperatures will range from the upper 30s to lower 40s over the interior, lower to mid-40s in the New York City metropolitan area, and upper 40s to lower 50s in the Philadelphia metropolitan area.

TONIGHT

High pressure will produce scattered clouds.  Winds will be from the east at 1 to 5 mph.  Low temperatures will range from the lower to mid-30s.

TOMORROW

An area of low pressure will develop well to the southeast of the region, with a trough lingering over the region, producing periods of light snow.  Most of the snow accumulation will be focused on cold surfaces.  Moderate snowfall will develop towards the evening with steady snow accumulation around the region.  Plowable snowfall is a threat along the New Jersey Coast, Long Island, and southeastern Pennsylvania.  Winds will be from the northeast at 5 to 15 mph.  High temperatures will range from the lower to mid-30s over the interior and mid to upper 30s along the coast.

TOMORROW NIGHT

An area of low pressure will rapidly intensify over the coastal waters with waves of moderate to very heavy snowfall.  Snowfall rates of 1″ to 3″ per hour will be possible.  Winds will back from the northeast to the northwest at 15 to 30 mph with gusts over 40 mph.  Low temperatures will range from the lower to mid-20s over the interior and upper 20s to lower 30s along the coast.

MONDAY

An area of low pressure and an inverted trough will exit the region with morning snow showers.  Skies will clear in the afternoon and evening.  Winds will be from the northwest at 10 to 20 mph with gusts up to 40 mph.  High temperatures will range from the lower to mid-30s.

TUESDAY

High pressure will produce clear skies.  Winds will be from the northwest at 5 to 15 mph.  Low temperatures will range from the mid to upper 10s over the interior, upper 10s to lower 20s in the suburbs, and mid to upper 20s in urban areas.  High temperatures will range from the upper 10s to lower 20s over the interior and mid to upper 20s along the coast.

WEDNESDAY

A warm front will produce periods of rain/snow showers.  Low temperatures will range from the lower to mid-10s over the interior, mid to upper 10s in the suburbs, and upper 10s to lower 20s in the suburbs.  High temperatures will range from the upper 30s to low 40s over the interior, mid-40s to lower 50s in the New York City metropolitan area, and mid to upper 50s in the Philadelphia metropolitan area.

THURSDAY

A cold front will approach with periods of showers.  Low temperatures will range from the lower to mid-30s over the interior and mid to upper 30s along the coast.  High temperatures will range from the lower to mid-40s over the interior, upper 40s to lower 50s in the New York City metropolitan area, and mid to upper 50s in the Philadelphia metropolitan area.

FRIDAY

High pressure will produce scattered clouds.  Low temperatures will range from the lower to mid-20s over the interior and upper 20s to lower 30s along the coast.  High temperatures will range from the mid to upper 30s over the interior and lower to mid-40s along the coast.

SATURDAY

High pressure will produce scattered clouds.  Low temperatures will range from the lower to mid-30s.  High temperatures will range from the lower to mid-50s over the interior, lower to mid-50s in the New York City metropolitan area, and upper 50s to lower 60s in the Philadelphia metropolitan area.

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