To: All F2P2 Partners

 

In compiling our notes for this year, we wanted to give everyone a chance to weigh-in on any flooding events that may have impacted your communities or you personally.  As most of you already know, 2020 had very few rainstorms capable of causing serious flood impacts making this year our least impactful since the F2P2 began 42 years ago.

 

To help with your recall, here are the storm dates that likely produced daily rainfall amounts of 2” or more:

 

DATE	LOCATION(s) POTENTIALLY IMPACTED	NOTES*
May 24	General widespread, low intensity rainfall	max GARR  >3.29”, no rain alarms
Jun 26	Arapaho, Boulder, Denver, Douglas & Jefferson Counties including Aurora and Lakewood	max GARR  >2.97”, greatest number of rain alarms for a single day in 2020
Jul 4	Aurora & southern Douglas County	max GARR  >3.41”
Jul 9	Adams County (Barr Lake area northwest of DIA)	max GARR >2”, no rain alarms
Jul 19	extreme SE Aurora & Arapahoe County	max GARR  >1.96”

*For more details and other storm days see https://f2p2.udfcd.org/2020_summary.html

 

Intense rainfall exceeding 3 inch-per-hour rates occurred on other days , but total rainfall for those days was under 2 inches.

 

Any information you can send us will be most appreciated. Thank you for all you do to keep your communities safe.

Final closing climate trivia...2020 was Colorado’s 3^rd driest year on record.

 

https://www.ncdc.noaa.gov/temp-and-precip/us-maps/6/202009?products[]=statewidepcpnrank#us-maps-select