An Arctic cold front associated with a strong storm system over the northern Rockies blasted into northeastern Colorado.  The temperature in Denver plummeted from the high of 64 degrees at 4:37 pm on the 10th to 34 degrees by 5:53 pm. The temperatures continued to fall and dropped into the teens by early evening.  The Arctic airmass remained entrenched over the region, with the high temperatures failing to reach the teens from the 11th through the 13th.  This was the first time since records have been taken in Denver, dating back to  1872, that there were three consecutive days with the maximum temperatures remained below 20 degrees in the month of November.  Several temperature records were broken.  In Denver alone, a
record low max of 16 degrees on the 11th broke the previous record of 19 set back in 1916.  A record low max of 6 degrees on the 12th broke the previous record of 9 degrees, also set in 1916.  The record low of -13 on the 12th, shattered the previous record of -4 degrees set back in 1872.  Even more impressive, the record low of -14 degrees on the 13th broke the previous record of -3 degrees set back in 1916.  The sudden drop in temperatures on the 10th, followed by several days of sub freezing temperatures chilled trees to the core. A record drop in temperatures preceded by mild fall temperatures damaged or killed scores of trees across the Urban Corridor and Northeast Plains.  At the time, the trees were not finished with the hardening process that enables them to withstand winter weather.  Many were  instantly flash-frozen, and some would not show signs of damage until spring. Of the 2.2 million trees in the city of Denver alone, tens of thousands were killed from the November frost.

Frost/Freeze in WASHINGTON COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in SEDGWICK COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in PHILLIPS COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in N DOUGLAS COUNTY BELOW 6000 FEET / DENVER / W ADAMS & ARAPAHOE COUNTIES / E BROOMFIELD COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Crop damage: 10.00M
Reported by: Newspaper

Frost/Freeze in ELBERT / C & E DOUGLAS COUNTIES ABOVE 6000 FEET, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in NE WELD COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in C & S WELD COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in LARIMER COUNTY BELOW 6000 FEET / NW WELD COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in MORGAN COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in C & E ADAMS & ARAPAHOE COUNTIES, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in BOULDER & JEFFERSON COUNTIES BELOW 6000 FEET / W BROOMFIELD COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in N & NE ELBERT COUNTY BELOW 6000 FEET / N LINCOLN COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in SE ELBERT COUNTY BELOW 6000 FEET / SOUTH LINCOLN COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper

Frost/Freeze in LOGAN COUNTY, COLORADO
From 10-NOV-14 18:00:00 to 14-NOV-14 12:00:00 (MST-7)
Reported by: Newspaper