Storm Station

Live/Radar/Snow, 6 hours

Forecast map / Forecast amount

Forecast snow, each 6 hours

Over Citizen station FW0094, Louisiana, where the map opens. The whole country

How much snow will fall in each 6 hours, in inches on the ground: where a storm turns to snow, and how heavy. How to read it.

Snow, 6 hours on the map

What the snow, 6 hours map shows

How much snow will fall in each 6 hours, in inches of snow on the ground. Played, it shows where a storm turns to snow and how the snow moves through the mountains and the plains.

How to read it

Under 1 in
A coating; roads can still turn slick.
1 to 3 in
Snow to clear.
3 to 6 in
Heavy snow; travel slows.
Over 6 in
Very heavy snow, 1 in an hour or more; travel stops.

What it is for

  • Time the heaviest snow of a storm.
  • See where rain turns to snow along the storm’s track.
  • Plan travel around the worst hours.

How it is made

The forecast maps are drawn from the national blend of the forecast models: the models joined into one forecast and corrected against what each place has measured, on a grid 1.6 miles across, the forecast the country’s forecasters start from. Each of its main runs, four a day, is read whole, laid onto the same grid of latitude and longitude as the radar at 2.8 miles a cell, and played forward from now.

A frame every 6 hours for 7 days, played as a loop of 1 to 7 days. As data: /radar/now.json?show=fsn, the times of its frames.

Beside it

Forecast total

Snow total

For

All the snow forecast from now to each frame, in inches: a storm’s whole snowfall, and the week’s.

.136 in

Open the map

Forecast amount

Rain, 6 hours

For

How much rain will fall in each 6 hours, in inches, snow as its water: the bands of rain crossing storm by storm.

.0112 in

Open the map

Forecast, hour by hour

Temperature

For

The temperature ahead across the lower 48, hour by hour, for seven days: warm and cold air on the move.

-20110 F

Open the map