A backdoor cold front along with northerly flow aloft boosted moisture across northern New Mexico on the 27th. A disturbance within that northerly flow kicked off early morning showers and thunderstorms along and east of the central mountains, moving slowly to the south. Rainfall amounts between half an inch and an inch were common with these storms, with up to 2.2 inches recorded in the Ute Park area. Heavy rains between Eagle Nest and Cimarron caused localized flash flooding that led to 1 fatality at Philmont Scout Ranch and the closure of US Highway 64 for nearly 36 hours. A second round of storms developed by the early afternoon, mainly along and west of the central mountain chain. A couple storms became severe near Jemez Springs and Sandia Park, producing up to half dollar size hail. The severe storm south of Jemez Springs also produced flash flooding that closed state road 485 and forest service road 376 as well as disrupting traffic at low water crossings along state road 4. Major damage was reported to state road 485 from the flood waters.

Hail in SANDOVAL, NEW MEXICO
From 27-JUN-15 15:30:00 to 27-JUN-15 15:40:00 (MST-7)
Location: FRIJOLES
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Storm chaser reported lots of hail covering the ground with the largest stone around half dollar size.

Hail in BERNALILLO, NEW MEXICO
From 27-JUN-15 15:42:00 to 27-JUN-15 15:45:00 (MST-7)
Location: SANDIA PARK
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS Employee reported pea to nickel sized hail near Sandia Park.

Flash Flood in COLFAX, NEW MEXICO
From 27-JUN-15 03:30:00 to 27-JUN-15 05:00:00 (MST-7)
Location: EAGLE NEST
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Department of Highways

New Mexico Department of Transportation closed US Highway 64 as heavy rain caused debris, boulders and a mud slide to cover several miles of the road. Philmont Scout Ranch also reported major flash flooding on the Ponil Creek basin that ran through a boy scout camp site in the nearby mountains. The flooding washed away 4 boys, killing 1.

Hail in BERNALILLO, NEW MEXICO
From 27-JUN-15 16:03:00 to 27-JUN-15 16:06:00 (MST-7)
Location: CEDAR CREST
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trucker reported penny size hail along interstate 40 at mile marker 178.

Hail in BERNALILLO, NEW MEXICO
From 27-JUN-15 15:40:00 to 27-JUN-15 15:43:00 (MST-7)
Location: SANDIA PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of quarter size hail that lasted 6 minutes.

Hail in SANDOVAL, NEW MEXICO
From 27-JUN-15 13:39:00 to 27-JUN-15 13:43:00 (MST-7)
Location: FRIJOLES
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Twitter picture showed dime to quarter size hail that fell in the Valles Caldera National Preserve.

Flash Flood in SANDOVAL, NEW MEXICO
From 27-JUN-15 16:30:00 to 27-JUN-15 18:00:00 (MST-7)
Location: JEMEZ SPGS
Flood cause: Heavy Rain
Property damage: 175.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused flash flooding south of Jemez Springs, closing state road 485 and forest service road 376. The county emergency manager reported significant damage to state road 485. Low water crossings along state road 4 between mile markers 10 and 16 were also flooded, but the road was never closed. New Mexico Department of Transportation representatives also noted that the Rio Guadalupe was out of its banks and possibly into homes.  Further information not confirmed at this time.

Hail in SANDOVAL, NEW MEXICO
From 27-JUN-15 15:30:00 to 27-JUN-15 15:35:00 (MST-7)
Location: JEMEZ SPGS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Twitter report indicated half dollar size hail fell along forest service road 604 near Cebollita Spring.

Hail in SANDOVAL, NEW MEXICO
From 27-JUN-15 15:38:00 to 27-JUN-15 15:44:00 (MST-7)
Location: JEMEZ SPGS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager passed along report of quarter to half dollar size hail in the community of Seven Springs.