Severe weather erupted across portions of the eastern plains during the afternoon hours as a strong shortwave moved across northern New Mexico.  Dewpoints in the mid 50s to low 60s, abundant instability, and 40 to 50 knots of 0 to 6 km shear was present across the northeast quarter of the state.  Storms formed along the east slopes of the central mountain chain and quickly became supercellular as they moved into more unstable air.  Very large hail, damaging wind gusts and an isolated tornado resulted from the storms.

Hail in MORA, NEW MEXICO
From 18-AUG-09 12:32:00 to 18-AUG-09 12:32:00 (MST-7)
Location: OJO FELIZ
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CHAVES, NEW MEXICO
From 18-AUG-09 12:05:00 to 18-AUG-09 12:40:00 (MST-7)
Location: ELK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Pea to penny size hail lasted 35 minutes.  1.80 inches of rain also fell in the same time frame.

Hail in SAN MIGUEL, NEW MEXICO
From 18-AUG-09 13:24:00 to 18-AUG-09 13:24:00 (MST-7)
Location: SOUTH SAN YSIDRO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MORA, NEW MEXICO
From 18-AUG-09 13:45:00 to 18-AUG-09 13:52:00 (MST-7)
Location: WAGON MOUND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Police Department confirmed golf ball size hail along Interstate 25.

Hail in QUAY, NEW MEXICO
From 18-AUG-09 15:15:00 to 18-AUG-09 15:15:00 (MST-7)
Location: LOGAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ping pong ball size hail was relayed via KVII in Amarillo from a viewer.

Thunderstorm Wind in CURRY, NEW MEXICO
From 18-AUG-09 16:45:00 to 18-AUG-09 16:45:00 (MST-7)
Location: BROADVIEW
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The Broadview Fire Department estimated a 60 mph wind gust.

Hail in QUAY, NEW MEXICO
From 18-AUG-09 14:40:00 to 18-AUG-09 14:45:00 (MST-7)
Location: (TCC)TUCUMCARI ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail was reported along U.S. Highway 54 northeast of Tucumcari. Hail fog developed as a result of the amount of hail along the ground.  A wall cloud was also sighted with this storm.

Hail in UNION, NEW MEXICO
From 18-AUG-09 15:50:00 to 18-AUG-09 15:50:00 (MST-7)
Location: CLAYTON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Tornado in HARDING, NEW MEXICO
From 18-AUG-09 15:09:00 to 18-AUG-09 15:11:00 (MST-7)
Location: MILLS
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple reports of a tornado were received approximately 10 miles north of Roy.  No damage was reported.

Hail in QUAY, NEW MEXICO
From 18-AUG-09 15:36:00 to 18-AUG-09 15:36:00 (MST-7)
Location: PORTER
Magnitude: 1.75 
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Public

A member of the public lost a truck window at the intersection of State Highways 392 and 469.

Thunderstorm Wind in QUAY, NEW MEXICO
From 18-AUG-09 15:23:00 to 18-AUG-09 15:23:00 (MST-7)
Location: HOUSE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated a 60 mph wind gust seven miles west of House.

Thunderstorm Wind in UNION, NEW MEXICO
From 18-AUG-09 16:45:00 to 18-AUG-09 16:45:00 (MST-7)
Location: AMISTAD
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in QUAY, NEW MEXICO
From 18-AUG-09 16:45:00 to 18-AUG-09 16:45:00 (MST-7)
Location: ENDEE
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

KVII-TV in Amarillo relayed a 65 mph wind gust from their Schoolnet site at Frost Ranch along State Highway 93.

Hail in SAN MIGUEL, NEW MEXICO
From 18-AUG-09 13:45:00 to 18-AUG-09 13:45:00 (MST-7)
Location: RIBERA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in QUAY, NEW MEXICO
From 18-AUG-09 15:45:00 to 18-AUG-09 15:51:00 (MST-7)
Location: PORTER
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Report relayed through spotternetwork.org.

Hail in UNION, NEW MEXICO
From 18-AUG-09 15:52:00 to 18-AUG-09 15:52:00 (MST-7)
Location: CLAYTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in QUAY, NEW MEXICO
From 18-AUG-09 16:00:00 to 18-AUG-09 16:18:00 (MST-7)
Location: BARD
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several 1.75 inch to 3 inch hail stones were along State Highway 392.  Relayed by spotternetwork.org.

Hail in CURRY, NEW MEXICO
From 18-AUG-09 16:21:00 to 18-AUG-09 16:21:00 (MST-7)
Location: GRADY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in QUAY, NEW MEXICO
From 18-AUG-09 16:35:00 to 18-AUG-09 16:35:00 (MST-7)
Location: GLENRIO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported ping pong ball to golf ball size hail.

Hail in UNION, NEW MEXICO
From 18-AUG-09 15:56:00 to 18-AUG-09 15:56:00 (MST-7)
Location: CLAYTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue