A warm front lifted north through northeast Kentucky on the 3rd with a quarter to a half inch of rain. Late afternoon and evening temperatures rose into the 50s.  Winds and dew points also increased.  This combination helped accelerate the melting of the leftover snow pack.
Rains increased again overnight and continued on the 4th. Rain rates were mostly 1 to 2 tenths of an inch per hour.  Total rainfall of 1.5 to 2 inches became common by that evening.
As minor small stream flooding occurred, the rain changed to sleet and wet snow during the early evening of the 4th.  Heavy wet snow quickly accumulated during the late evening on the 4th and into the morning hours of Thursday the 5th.
The snow diminished by early afternoon of the 5th.  A total snow accumulation of 10 to 15 inches was common, with the heaviest over northern Greenup County.  For example, the cooperative observer at Warnock measured a 15 inch accumulation.   Olive Hill measured 13 inches.
After transitioning from rain to snow, the wet snow accumulated on trees, especially evergreen trees.  Power outages were common.
With clearing in the wake of the storm, a cold early morning occurred on the 6th, for so late in the season.  Minimum temperatures ranged from near zero along the rivers to well below zero in outlying areas.  The coldest temperature was 12 below zero from Olive Hill of Carter County.  Warnock in Greenup County had minus 4. Meanwhile, Louisa registered a minimum temperature of zero.
Eventually, the Ohio River had minor flooding.  Overall, both the stream and river flooding mainly blocked roads with little damage to structures.
Due to the minor flooding and the heavy snow, a federal disaster was eventually declared for public assistance. The declaration included all 4 counties in northeast Kentucky.  See FEMA disaster number 4218.

Cold/Wind Chill in BOYD, KENTUCKY
From 06-MAR-15 00:00:00 to 06-MAR-15 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Cold/Wind Chill in CARTER, KENTUCKY
From 06-MAR-15 00:00:00 to 06-MAR-15 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy Snow in BOYD, KENTUCKY
From 04-MAR-15 19:00:00 to 05-MAR-15 12:00:00 (EST-5)
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Cold/Wind Chill in GREENUP, KENTUCKY
From 06-MAR-15 00:00:00 to 06-MAR-15 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Cold/Wind Chill in LAWRENCE, KENTUCKY
From 06-MAR-15 00:00:00 to 06-MAR-15 10:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy Snow in CARTER, KENTUCKY
From 04-MAR-15 18:30:00 to 05-MAR-15 12:00:00 (EST-5)
Property damage: 20.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy Snow in GREENUP, KENTUCKY
From 04-MAR-15 18:30:00 to 05-MAR-15 12:00:00 (EST-5)
Property damage: 25.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy Snow in LAWRENCE, KENTUCKY
From 04-MAR-15 20:00:00 to 05-MAR-15 16:00:00 (EST-5)
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in GREENUP, KENTUCKY
From 04-MAR-15 12:00:00 to 07-MAR-15 14:00:00 (EST-5)
Location: KEHOE
Flood cause: Heavy Rain / Snow Melt
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Small streams overflowed and blocked roads by the afternoon of the 4th.  For example, Three Prong Branch flooded State Route 784.  Route 2 also flooded near Load. The Ohio River kept minor flooding lingering into the 7th.  The Greenup Lock and Dam crested just over its 54 foot flood stage on the 7th.

Flood in CARTER, KENTUCKY
From 04-MAR-15 13:00:00 to 05-MAR-15 20:00:00 (EST-5)
Location: JERIEL
Flood cause: Heavy Rain / Snow Melt
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Department of Highways

Small streams flooded roads by the afternoon of the 4th.  One example was Little Sinking Creek. Wilson Creek flooded near Route 60.

Flood in BOYD, KENTUCKY
From 04-MAR-15 14:00:00 to 07-MAR-15 14:00:00 (EST-5)
Location: COALTON
Flood cause: Heavy Rain / Snow Melt
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Public

Streams began to overflow onto roads during the afternoon of the 4th.  The Ohio River crested just over 55 feet at Ashland early on the 7th, about 3 feet above flood stage.

Flood in LAWRENCE, KENTUCKY
From 04-MAR-15 07:00:00 to 06-MAR-15 05:00:00 (EST-5)
Location: BLAINE
Flood cause: Heavy Rain / Snow Melt
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Small streams flooded and blocked roads.  One example was Cains Creek near Blaine. Another flooded stream was Lick Creek. The Tug Fork River kept some roads near the West Virginia border flooded into the 6th.