Hurricane Katrina
RainNew Orleans, Louisiana · August 29, 2005
200 mm/hr peak3 min playback
Your simulation
Your conditionsModerate
mm/hr
No rain600 mm/hr
1 mm of rain = 1 litre per square metre.
Make the numbers useful
How much rain is that?
5 mm
Calculated from the rate above and duration.
minutes
m²
For example, a 40 m² garden or roof.
200 litresWater falling on that area
5 mm/hr · 5 L/m²
Constant-rate estimate. This is water falling on the area, before runoff, absorption or collection losses.
Trace< 0.25 mm/h
Very Light0.25 - 1.0 mm/h
Light1.0 - 2.5 mm/h
Moderate2.5 - 10 mm/h
Heavy10 - 50 mm/h
Violent50+ mm/h
Source: Manual conditionsWind: 0.0 km/hTemperature: 20.0°C
Local weather & forecasts
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Explore changing conditions
Storms have a shape.
Explore 19 illustrative profiles inspired by historical events. These are not observed station records.
19 matching profiles
Hurricane Sandy (Superstorm)
RainNew York City · October 29, 2012
180 mm/hr peak4 min playback
Storm of the Century
SnowEastern United States · March 12-15, 1993
25 mm/hr peak5 min playback
Hurricane Andrew
RainMiami, Florida · August 24, 1992
300 mm/hr peak2 min playback
Blizzard Jonas
SnowWashington DC / Baltimore · January 22-24, 2016
30 mm/hr peak6 min playback
Mid-Atlantic Derecho
RainWashington DC to Ohio · June 29, 2012
150 mm/hr peak2 min playback
Hurricane Camille
RainMississippi Gulf Coast · August 17, 1969
350 mm/hr peak3 min playback
Hurricane Mitch
RainCentral America · October 26-November 5, 1998
400 mm/hr peak8 min playback
Moore Tornado
RainMoore, Oklahoma · May 20, 2013
250 mm/hr peak1 min playback
Great Flood of 1993
RainMidwest United States · Summer 1993
120 mm/hr peak10 min playback
Labor Day Hurricane
RainFlorida Keys · September 2, 1935
320 mm/hr peak2 min playback
Tri-State Tornado
RainMissouri, Illinois, Indiana · March 18, 1925
280 mm/hr peak4 min playback
Galveston Hurricane
RainGalveston, Texas · September 8, 1900
270 mm/hr peak3 min playback
Joplin Tornado
RainJoplin, Missouri · May 22, 2011
270 mm/hr peak1 min playback
Typhoon Tip
RainWestern Pacific / Japan · October 12-19, 1979
380 mm/hr peak4 min playback
Cyclone Tracy
RainDarwin, Australia · December 24-25, 1974
250 mm/hr peak2 min playback
European Heatwave 2003
RainWestern Europe · June-August 2003
15 mm/hr peak8 min playback
Mumbai Monsoon Floods
RainMumbai, India · July 26-27, 2005
400 mm/hr peak3 min playback
Great Storm of 1987
RainUnited Kingdom · October 15-16, 1987
120 mm/hr peak3 min playback
Measurements & comparison
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Recent measurements
Rainfall Intensity
5.0 mm/hr
Moderate
Wind Speed
0.0 km/h
Temperature
20.0°C
Mild
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Explore specific rain intensities
A number. A little more meaning.
Explore the guides01 / UNDERSTAND
Millimetres, made simple.
Why 1 mm of rain is also 1 litre per square metre.
02 / COMPARESame total. Different storm.
See what happens when the same rain falls faster.
03 / CREATEBring rain to your page.
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Educational visualization, not a forecast or flood model. Read the methodology. · Partner: Athena Calc