Winter Storm — Northern Greenlee, Arizona

2001-01-12 · Northern Greenlee, Arizona

Event narrative

Hanagan Meadow received 9 inches of snow.

Wider weather episode

The low pressure system originated in the Gulf of Alaska on the 7th and moved down the west coast, closing off on the 11th. After hitting the California coast, the storms precipitable region split into two areas. The cold frontal boundary moved ahead of the closed low into western Arizona on the 12th and was the primary source of precipitation. The storms strong dynamics and steep afternoon lapse rates contributed to the heavy precipitation across the county warning area. The system was extremely cold as the 1000-500 hPa thicknesses dropped rom 5520 meters to 5378 meters in 12 hours. Snow levels dropped to 2500 feet on the morning of the 12th. However, there was no accumulation along the valley floor due to the warmer ground temperatures.

Source: NOAA Storm Events Database, event_id 5228025. Narrative written by the NWS forecast office that issued the report.