How much water falls during a rain storm?

Rainfall calculator, metric-How much water falls during a storm? USGS Water Science School How much water falls during a storm? It is the middle of July and both you and your tomatoes are wilting in your yard, both looking to the sky and hoping for rain.

How much water did the No Name Storm dump on Louisiana?

The Washington Post noted that the “no-name storm” dumped three times as much rain on Louisiana as Hurricane Katrina. It dropped the equivalent of 7.1 trillion gallons of water or enough to fill Lake Pontchartrain about four times.

How big is a drop of rain in an hour?

Rain, drops of appreciable size and may be described as small to large drops. It is possible to have rain drops within drizzle! Slight rain: Less than 0.5 mm per hour. Moderate rain: Greater than 0.5 mm per hour, but less than 4.0 mm per hour. Heavy rain: Greater than 4 mm per hour, but less than 8 mm per hour.

Why do I want to know how much rain has fallen?

Or, maybe a low-pressure cell has been napping overhead, and your arm is hurting from holding that umbrella while you watch your basement fill up with water. Either way, you would like to know how much rain has fallen—how many gallons have come down from the skies onto your roof, yard, block, or town.

How often are 24h and 72h rainfall maps updated?

Data Update Cycle: The 1-hr mosaic is updated every 5 min (approx). All other mosaics are now updated hourly, including the 48h and 72h maps. This schedule replaces the previous update cycle, which limited hourly updates to the 3h, 6h, 12h, and 24h mosaics, while 48h and 72h maps were generated once daily.

How can I find out how much rain has fallen in one day?

Click anywhere on the map for a rainfall estimate. Data collected using Doppler radar polarimeteric technology are objectively analyzed by complex precipitation algorithms to produce very accurate estimates of accumulated precipitation at each grid point.

What kind of data is used to calculate rainfall?

Note: Rainfall amounts are estimates and consist of both rain gauge data and radar data.