Storm Events Database

Event Details

Event Blizzard
State NORTH DAKOTA
County/Area DUNN
WFO BIS
Begin Date 04/30/2011 02:00:00 CST-6
End Date 04/30/2011 20:00:00 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 500.00K
Crop Damage 0.00K
Episode Narrative A powerful late spring storm system swept across the Northern Plains region April 29th into May 1st. Significant amounts of moisture was drawn into the storm from the Gulf of Mexico, leading to heavy amounts of precipitation over west and central North Dakota. Strong cold air advection on the back side of the surface low resulted in a changeover from rain to freezing rain and eventually to heavy wet snow from west to east during this event.

In addition, a tight pressure gradient and strong pressure rises on the back side of the surface low resulted in the development of very strong winds ranging from 40 to 60 mph across much of the region. Some reporting stations observed peak wind gusts in excess of 75 mph.

Parts of western and north central North Dakota were hit the hardest, experiencing a prolonged period of very strong winds, freezing precipitation, and the heaviest snow of up to 14 inches. Impacts here were extreme and devastating, as the ice and heavy wet snow combined with the strong winds to knock down numerous trees and power lines, resulting in the loss of power to thousands, as well as stranding many motorists. Across the southwest and central impacts were less severe, however the widespread blizzard conditions still resulted in numerous road closures and travel advisories. Far south central and eastern North Dakota received very little snowfall but still experienced the high winds.

A preliminary damage assessment by state officials documented an estimated 6.5 million dollars in damages, leading the North Dakota Governor to issue a State Disaster Declaration. Over 1,500 power transmission structures were damaged, and estimated livestock losses were more than 1,000. Also, one direct fatality and one direct injury were attributed to the storm near New England in Hettinger County, where a two-vehicle head on crash occurred due to low visibilities in the blizzard.

See also storm data entries for May 2011.
Event Narrative Up to near 11 inches of heavy wet snow combined with winds gusting to 70 mph to result in widespread blizzard conditions. Travel was impossible due to many roads blocked by snow. Numerous trees and power lines were knocked down, leading to a prolonged period of power outages across the county. Adverse effects caused by the storm and disruption in power included losses to livestock.


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 1 1 3.435M 0.00K
WILLIAMS (ZONE) WILLIAMS (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 500.00K 0.00K
MCKENZIE (ZONE) MCKENZIE (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 500.00K 0.00K
GOLDEN VALLEY (ZONE) GOLDEN VALLEY (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 100.00K 0.00K
BILLINGS (ZONE) BILLINGS (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 100.00K 0.00K
SLOPE (ZONE) SLOPE (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 100.00K 0.00K
BOWMAN (ZONE) BOWMAN (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 100.00K 0.00K
DIVIDE (ZONE) DIVIDE (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 500.00K 0.00K
MOUNTRAIL (ZONE) MOUNTRAIL (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 500.00K 0.00K
DUNN (ZONE) DUNN (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 500.00K 0.00K
STARK (ZONE) STARK (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 0.00K 0.00K
HETTINGER (ZONE) HETTINGER (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 1 1 35.00K 0.00K
ADAMS (ZONE) ADAMS (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 0.00K 0.00K
BURKE (ZONE) BURKE (ZONE) ND 04/30/2011 02:00 CST-6 Blizzard 0 0 500.00K 0.00K
MERCER (ZONE) MERCER (ZONE) ND 04/30/2011 10:00 CST-6 Blizzard 0 0 0.00K 0.00K
RENVILLE (ZONE) RENVILLE (ZONE) ND 04/30/2011 10:00 CST-6 Blizzard 0 0 0.00K 0.00K
WARD (ZONE) WARD (ZONE) ND 04/30/2011 10:00 CST-6 Blizzard 0 0 0.00K 0.00K
MCLEAN (ZONE) MCLEAN (ZONE) ND 04/30/2011 10:00 CST-6 Blizzard 0 0 0.00K 0.00K
MCHENRY (ZONE) MCHENRY (ZONE) ND 04/30/2011 12:00 CST-6 Blizzard 0 0 0.00K 0.00K
OLIVER (ZONE) OLIVER (ZONE) ND 04/30/2011 12:00 CST-6 Blizzard 0 0 0.00K 0.00K
BOTTINEAU (ZONE) BOTTINEAU (ZONE) ND 04/30/2011 12:00 CST-6 Blizzard 0 0 0.00K 0.00K
SHERIDAN (ZONE) SHERIDAN (ZONE) ND 04/30/2011 13:00 CST-6 Blizzard 0 0 0.00K 0.00K
WELLS (ZONE) WELLS (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 52 kts. EG 0 0 0.00K 0.00K
KIDDER (ZONE) KIDDER (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 52 kts. EG 0 0 0.00K 0.00K
LOGAN (ZONE) LOGAN (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 52 kts. EG 0 0 0.00K 0.00K
EMMONS (ZONE) EMMONS (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 52 kts. EG 0 0 0.00K 0.00K
LA MOURE (ZONE) LA MOURE (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 52 kts. EG 0 0 0.00K 0.00K
DICKEY (ZONE) DICKEY (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 52 kts. EG 0 0 0.00K 0.00K
BURLEIGH (ZONE) BURLEIGH (ZONE) ND 04/30/2011 13:00 CST-6 Blizzard 0 0 0.00K 0.00K
MORTON (ZONE) MORTON (ZONE) ND 04/30/2011 13:00 CST-6 Blizzard 0 0 0.00K 0.00K
SIOUX (ZONE) SIOUX (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 51 kts. MG 0 0 0.00K 0.00K
GRANT (ZONE) GRANT (ZONE) ND 04/30/2011 13:00 CST-6 Blizzard 0 0 0.00K 0.00K
STUTSMAN (ZONE) STUTSMAN (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 35 kts. MS 0 0 0.00K 0.00K
MCINTOSH (ZONE) MCINTOSH (ZONE) ND 04/30/2011 13:00 CST-6 High Wind 35 kts. MS 0 0 0.00K 0.00K
Totals: 1 1 3.435M 0.00K