A powerful storm system moved over northeast Colorado on the 13th, then slowly exited into the Central Plains on the 14th.  The storm produced blizzard conditions over the far northeastern plains of Colorado, with high winds elsewhere.  Snow and blowing snow produced extensive drifting snow up to 7 feet deep, along with near zero visibility.  The dangerous conditions made the roads impassable and stranded motorists over northeast Lincoln, Logan, Phillips, Sedgwick, and Washington counties.  Consequently, I-76 east of Sterling, I-70 east of Limon and nearly all other roads and highways across Northeast and East-Central Colorado were closed due to hazardous driving conditions.   In total, more than a dozen semi-trucks were blown over.   Eight semi trucks west of Akron, along Colorado Highway 34 were blown over.  Blizzard conditions made it nearly impossible to get tow trucks to accidents and rescue stranded motorists.  The dangerous conditions also caused widespread power outages and strayed cattle.  Some livestock was lost, mainly calves.
Numerous trees were snapped or uprooted in the Hugo and Limon areas.  A large tree, 2.5 ft in diameter, was knocked over in Hugo.  Peak wind gusts included:  78 mph at  Akron-Washington County Airport, 76 mph at Limon Municipal Airport, 72 mph in Hugo and Sterling, 71 mph near Bennett and Genoa, 65 mph at Briggsdale, 62 mph, 7 miles northwest of Boyero and Denver International Airport; 60 mph, 8 miles south of Holyoke and near Wiggins; 59 mph near Keenesburg, 12 miles east-northeast of Kiowa, 7 miles south of Shamrock and Woodlin School; 58 mph at Agate, Front Range Airport in Watkins, Kassler and 11 miles west-northwest of Westplains.  Snowfall totals ranged from 4 to 10 inches.

Blizzard in PHILLIPS COUNTY, COLORADO
From 13-APR-18 05:00:00 to 14-APR-18 05:00:00 (MST-7)
Reported by: Trained Spotter

Blowing and drifting snow caused extensive outages across Phillips County.  The hardest hit areas were south of Haxtun and Fleming.  There were about 10 poles broken and numerous broken cross-arms.  Most of the outages were caused by lines galloping; with ice on the lines and the strong winds slapping them together.

High Wind in N DOUGLAS COUNTY BELOW 6000 FEET / DENVER / W ADAMS & ARAPAHOE COUNTIES / E BROOMFIELD COUNTY, COLORADO
From 13-APR-18 05:00:00 to 13-APR-18 23:00:00 (MST-7)
Magnitude: 54.00 MG
Reported by: ASOS

A wind gust to 62 mph occurred at Denver International Airport.

Blizzard in SEDGWICK COUNTY, COLORADO
From 13-APR-18 05:00:00 to 14-APR-18 05:00:00 (MST-7)
Reported by: Trained Spotter

Strong winds and heavy snow over parts of Sedgwick County.  A trained spotters measured 9 inches of snow, 5 miles south of Sedgwick, with 6 to 8 inches of snow near Julesburg.  Frequent wind gusts in the 50 to 60 mph range were also observed.

High Wind in NE WELD COUNTY, COLORADO
From 13-APR-18 05:00:00 to 13-APR-18 23:00:00 (MST-7)
Magnitude: 53.00 MG
Reported by: Mesonet

High Wind in MORGAN COUNTY, COLORADO
From 13-APR-18 05:00:00 to 13-APR-18 23:00:00 (MST-7)
Magnitude: 52.00 MG
Reported by: Mesonet

High Wind in C & S WELD COUNTY, COLORADO
From 13-APR-18 05:00:00 to 13-APR-18 23:00:00 (MST-7)
Magnitude: 51.00 MG
Reported by: Mesonet

Blizzard in LOGAN COUNTY, COLORADO
From 13-APR-18 05:00:00 to 14-APR-18 05:00:00 (MST-7)
Reported by: Trained Spotter

Snow and blowing snow forced the closure of numerous road and highways across Logan County, including Interstate 76 east of Sterling.  Numerous power outages occurred due to blizzard conditions.  Frequent wind gusts in excess of 50 mph were recorded in Sterling.  Storm totals included 7 inches in Crook, with 6 inches, 5 miles west-southwest of Leroy.

Blizzard in WASHINGTON COUNTY, COLORADO
From 13-APR-18 05:00:00 to 14-APR-18 05:00:00 (MST-7)
Reported by: Trained Spotter

Strong winds and heavy snow over northern Washington County.  A trained spotter 5 miles southeast of Akron estimated 8 inches of snow had fallen, with visibility reduced to just 50 feet.

Hail in LOGAN, COLORADO
From 13-APR-18 01:09:00 to 13-APR-18 01:09:00 (MST-7)
Location: STERLING
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

High Wind in N & NE ELBERT COUNTY BELOW 6000 FEET / N LINCOLN COUNTY, COLORADO
From 13-APR-18 05:00:00 to 14-APR-18 14:00:00 (MST-7)
Magnitude: 66.00 MG
Reported by: ASOS

Light snow and high winds over northeast Lincoln County, produced localized blizzard conditions along Interstate 70 east of Genoa.

High Wind in C & E ADAMS & ARAPAHOE COUNTIES, COLORADO
From 13-APR-18 05:00:00 to 13-APR-18 23:00:00 (MST-7)
Magnitude: 50.00 MG
Reported by: Mesonet

Hail in ARAPAHOE, COLORADO
From 13-APR-18 00:45:00 to 13-APR-18 00:45:00 (MST-7)
Location: ARAPAHOE PARK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public