KBWI – Baltimore-Washington International Airport
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Observed
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1 Year PF Estimate
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10 Year PF Estimate
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100 Year PF Estimate
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1000 Year PF Estimate
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Time Window
|
3 Hour
|
4.97
|
1.51
|
2.71
|
4.20
|
6.04
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1600-1900 UTC 12 August 2014
|
6 Hour
|
5.75
|
1.86
|
3.32
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5.32
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7.98
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1300-1900 UTC 12 August 2014
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Table 5. Baltimore-Washington International Airport. 3-hour observed total from 1600 to 1900 UTC and 6-hour estimated 1300-1900 UTC compared to the NOAA Atlas-14 volume 2, 10, 100, and 1000 year return periods. Return to text.
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KPWM – Portland, ME Jetport
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Observed
|
1 Year PF Estimate
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10 Year PF Estimate
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100 Year PF Estimate
|
500 Year PF Estimate
|
Time Window
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2 Hour
|
4.21
|
1.00
|
1.82
|
3.16
|
4.67
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0100-0300 UTC 14 August 2014
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6 Hour
|
6.06
|
1.53
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2.96
|
5.45
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7.34
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2100-0300 UTC 13-14 August 2014
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Table 6. Portland International Jetport. 2-hour observed total from 0100 to 0300 UTC and 6-hour estimated 2100-0300 UTC compared to the NRCC Extreme Precipitation Analysis webpage for 1, 10, 100, and 500 year return periods. Return to text.
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Appendices of summarized METAR hourly rainfall used to estimate return periods and produce imagery. 
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