Storm Comparison

You'd think this would be easier to find than it is....

For Colorado (From NOAA Atlas 2):

• 2-yr storm: 0.71" in 1 hour, or 0.83" in 2 hours, or 0.91" in 3 hours, or 1.05" in 6 hours, or 1.58" in 24 hours
• 5-yr storm: 1.38" in 6 hours or 1.99" in 24 hours
• 10-yr storm: 1.59" in 6 hours or 2.27" in 24 hours
• 25-yr storm: 1.90" in 6 hours or 2.65" in 24 hours
• 50-yr storm: 2.19" in 6 hours or 2.95" in 24 hours
• 100-yr storm: 1.86" in 1 hour, or 2.39" in 6 hours, or 3.35" in 24 hours

For East half of Texas (SCS type III, Can be found in City of Austin DCM):

• 2-yr storm: 1.72" in 1 hour, or 2.16" in 2 hours, or 2.32" in 3 hours, or 2.67" in 6 hours, or 3.44" in 24 hours
• 5-yr storm: 3.56" in 6 hours or 4.99" in 24 hours
• 10-yr storm: 4.21" in 6 hours or 6.10" in 24 hours
• 25-yr storm: 5.14" in 6 hours or 7.64" in 24 hours
• 50-yr storm: 5.94" in 6 hours or 8.87" in 24 hours
• 100-yr storm: 4.37" in 1 hour, or 6.85" in 6 hours, or 10.20" in 24 hours

You'll notice that a Colorado 100-year storm is roughly equivalent to a Texas 2-year storm. This explains why when I moved down here, it would rain and I would worry that someone was going to come by and tell me it was time to evacuate.