The severe wind outbreak of June 18, 2015

319 wind reportsOhio, Virginia, Maryland and 18 more states

319 damaging wind reports across 21 states between 1:12 AM and 12:50 AM the next day CDT, 4 of them 65 knots (75 mph) or stronger; the strongest measured gust was 79 mph in Powder River County, MT. 42 hail reports and 6 tornadoes the same day.

Watch the day unfold

Severe wind day · June 18, 2015

How the day unfolded

Every damaging wind report of the day at its logged time, with the day's hail reports and tornadoes, and the counties they reached.

About this replay

Central time—Historical replay — logged report times

Wind reports—of 319 that day

Strongest gust—measured, so far

Largest hail—so far

The day’s milestones

Wind reportsLarger and brighter with speed; filled when measured, a ring when estimated

Hail and tornadoesHail reports as diamonds; the day's tornado paths in green

Counties reportingLit at their first report, brighter with a 65-knot gust or 2-inch hail

Source: NOAA Storm Prediction Center severe weather database (wind, hail and tornado reports with their logged times and places). Each report is a damage or measurement report, not a separate storm; several can describe one gust front. Tornado paths are drawn at a typical forward speed of 35 mph. Times are Central Daylight Time.

The day in numbers

Wind reports: 319; on Thursday, June 18, 2015
75 mph or more: 4; 0 of 86 mph (75 knots) or more
Strongest measured gust: 79 mph; 69 knots, Powder River County, MT
Measured: 18; reports with an instrument reading; the rest are estimates from damage
Killed by wind: 0; 0 injured
Counties reporting: 167; in 21 states

Hour by hour

Damaging wind reports in each hour, Central Daylight Time.

The strongest winds

The 100 strongest reports with a speed. Measured gusts come from an instrument; estimated speeds are judged from damage.

Strongest wind reports, June 18, 2015

12:25 AM	Powder River County MT	79 mph	69	Measured
3:50 PM	Wilkes County GA	75 mph	65	Estimated
4:40 PM	Franklin County VA	75 mph	65	Estimated
5:35 PM	Walton County GA	75 mph	65	Estimated
12:15 AM	Rosebud County MT	72 mph	63	Measured
3:57 PM	Fairfax County VA	70 mph	61	Estimated
3:57 PM	Fairfax County VA	70 mph	61	Estimated
4:02 PM	Fairfax County VA	70 mph	61	Estimated
4:31 PM	Anne Arundel County MD	70 mph	61	Estimated
11:10 PM	Big Horn County MT	70 mph	61	Estimated
12:50 AM	Powder River County MT	70 mph	61	Estimated
11:20 PM	Big Horn County MT	69 mph	60	Measured
1:25 PM	Aiken County SC	69 mph	60	Estimated
3:15 PM	Calhoun County SC	69 mph	60	Estimated
3:18 PM	Forsyth County GA	69 mph	60	Estimated
3:25 PM	Calhoun County SC	69 mph	60	Estimated
3:25 PM	Calhoun County SC	69 mph	60	Estimated
3:42 PM	Orangeburg County SC	69 mph	60	Estimated
3:42 PM	Orangeburg County SC	69 mph	60	Estimated
4:05 PM	Warren County OH	69 mph	60	Estimated
4:33 PM	Anne Arundel County MD	69 mph	60	Estimated
5:26 PM	Defiance County OH	69 mph	60	Estimated
4:13 PM	Roanoke County VA	66 mph	57	Measured
11:56 AM	Crawford County MI	66 mph	57	Estimated
3:50 PM	Loudoun County VA	64 mph	56	Measured
1:32 PM	Hendricks County IN	64 mph	56	Estimated
5:15 PM	New Hanover County NC	64 mph	56	Estimated
2:00 PM	Chesterfield County SC	63 mph	55	Estimated
2:05 PM	Kershaw County SC	63 mph	55	Estimated
2:09 PM	Barnwell County SC	63 mph	55	Estimated
2:15 PM	Haralson County GA	63 mph	55	Estimated
2:48 PM	Calhoun County SC	63 mph	55	Estimated
3:01 PM	Amherst County VA	63 mph	55	Estimated
3:06 PM	Richland County SC	63 mph	55	Estimated
3:10 PM	Amherst County VA	63 mph	55	Estimated
3:15 PM	Calhoun County SC	63 mph	55	Estimated
3:25 PM	Clarendon County SC	63 mph	55	Estimated
3:40 PM	Appomattox County VA	63 mph	55	Estimated
3:50 PM	Coweta County GA	63 mph	55	Estimated
4:30 PM	Fulton County GA	63 mph	55	Estimated
5:24 PM	Greenville County SC	63 mph	55	Estimated
5:39 PM	Chester County SC	63 mph	55	Estimated
5:52 PM	Lancaster County SC	63 mph	55	Estimated
6:20 PM	Houston County GA	63 mph	55	Estimated
7:40 PM	Dooly County GA	63 mph	55	Estimated
5:21 PM	New Hanover County NC	62 mph	54	Measured
12:42 PM	Oscoda County MI	62 mph	54	Estimated
3:55 PM	Bowie County TX	62 mph	54	Estimated
1:25 AM	—	61 mph	53	Measured
1:33 AM	—	61 mph	53	Measured
2:00 AM	Bennett County SD	61 mph	53	Estimated
11:15 PM	Big Horn County MT	60 mph	52	Measured
1:12 AM	—	60 mph	52	Estimated
1:30 AM	Sheridan County NE	60 mph	52	Estimated
1:30 AM	—	60 mph	52	Estimated
1:45 AM	Bennett County SD	60 mph	52	Estimated
2:20 AM	Bennett County SD	60 mph	52	Estimated
6:45 AM	Caddo Parish LA	60 mph	52	Estimated
12:00 PM	Grand Traverse County MI	60 mph	52	Estimated
1:05 PM	Champaign County IL	60 mph	52	Estimated
1:20 PM	Jessamine County KY	60 mph	52	Estimated
1:37 PM	Allen County KY	60 mph	52	Estimated
1:57 PM	Harrison County KY	60 mph	52	Estimated
2:05 PM	Putnam County IN	60 mph	52	Estimated
2:11 PM	Warren County KY	60 mph	52	Estimated
2:34 PM	Warren County KY	60 mph	52	Estimated
2:50 PM	Darlington County SC	60 mph	52	Estimated
3:10 PM	Frederick County MD	60 mph	52	Estimated
3:29 PM	Montgomery County MD	60 mph	52	Estimated
3:29 PM	Grayson County KY	60 mph	52	Estimated
3:37 PM	Preble County OH	60 mph	52	Estimated
3:37 PM	Preble County OH	60 mph	52	Estimated
3:41 PM	New Hanover County NC	60 mph	52	Estimated
3:43 PM	Montgomery County MD	60 mph	52	Estimated
3:43 PM	Montgomery County MD	60 mph	52	Estimated
3:44 PM	Larue County KY	60 mph	52	Estimated
3:44 PM	Robeson County NC	60 mph	52	Estimated
3:45 PM	Harrison County KY	60 mph	52	Estimated
3:46 PM	Montgomery County MD	60 mph	52	Estimated
3:50 PM	Walker County GA	60 mph	52	Estimated
3:52 PM	Bullitt County KY	60 mph	52	Estimated
3:54 PM	Bullitt County KY	60 mph	52	Estimated
3:54 PM	Fairfax County VA	60 mph	52	Estimated
3:55 PM	Fairfax County VA	60 mph	52	Estimated
3:57 PM	Prince George's County MD	60 mph	52	Estimated
4:00 PM	Pender County NC	60 mph	52	Estimated
4:00 PM	Harrison County KY	60 mph	52	Estimated
4:00 PM	Fairfax County VA	60 mph	52	Estimated
4:04 PM	Marion County SC	60 mph	52	Estimated
4:05 PM	Marion County SC	60 mph	52	Estimated
4:08 PM	Fairfax County VA	60 mph	52	Estimated
4:10 PM	Marion County SC	60 mph	52	Estimated
4:13 PM	Columbus County NC	60 mph	52	Estimated
4:15 PM	Jefferson County KY	60 mph	52	Estimated
4:15 PM	Florence County SC	60 mph	52	Estimated
4:18 PM	Marion County SC	60 mph	52	Estimated
4:23 PM	Bladen County NC	60 mph	52	Estimated
4:32 PM	Anne Arundel County MD	60 mph	52	Estimated
4:33 PM	Calvert County MD	60 mph	52	Estimated
4:34 PM	Calvert County MD	60 mph	52	Estimated

By state

Severe weather reports by state, June 18, 2015

Ohio	52	59 mph	1	0.75
Virginia	40	66 mph	10	2.00
Maryland	36	59 mph	3	1.50
South Carolina	32	—	4	1.00
Kentucky	27	—	4	1.50
Georgia	27	—	0	—
North Carolina	23	62 mph	6	1.75
Indiana	16	49 mph	0	—
Pennsylvania	16	—	0	—
Florida	12	—	1	0.88
West Virginia	7	—	1	0.88
South Dakota	7	61 mph	0	—
Montana	6	79 mph	2	1.25
Tennessee	6	—	1	1.00
Michigan	4	—	0	—
Texas	3	59 mph	0	—
Wyoming	1	59 mph	3	1.50
Nebraska	1	—	2	1.00
Arkansas	1	—	0	—
Illinois	1	—	0	—
Louisiana	1	—	0	—
Colorado	0	—	4	1.25

Counties with the most wind reports

Calvert CountyMD · 15 reports
Montgomery CountyOH · 9 reports
Allegheny CountyPA · 9 reports
Fairfax CountyVA · 8 reports
Marion CountyFL · 6 reports
Wayne CountyIN · 6 reports
Preble CountyOH · 6 reports
Charles CountyMD · 6 reports
Accomack CountyVA · 6 reports
Hamilton CountyOH · 5 reports

Hail and tornadoes that day

42 hail reports, 1 of 2 inches or more; 6 tornadoes.

Largest hail, June 18, 2015

4:05 PM	Fairfax County VA	2.00
1:26 PM	Buncombe County NC	1.75
2:39 PM	Butler County KY	1.50
3:22 PM	Montgomery County MD	1.50
3:57 PM	Fairfax County VA	1.50
4:07 PM	Fairfax County VA	1.50
6:30 PM	Platte County WY	1.50
3:56 PM	Fairfax County VA	1.25
4:00 PM	Fairfax County VA	1.25
9:25 PM	Stillwater County MT	1.25
10:01 PM	Boulder County CO	1.25
1:25 AM	Dawes County NE	1.00
1:55 AM	Dawes County NE	1.00
1:16 PM	Aiken County SC	1.00
1:16 PM	Aiken County SC	1.00
2:19 PM	Chesterfield County SC	1.00
2:21 PM	Lawrence County KY	1.00
2:30 PM	Cumberland County NC	1.00
3:10 PM	Montgomery County MD	1.00
3:11 PM	Montgomery County MD	1.00
3:59 PM	Fairfax County VA	1.00
4:04 PM	Fairfax County VA	1.00
4:05 PM	Laramie County WY	1.00
4:10 PM	Fairfax County VA	1.00
4:12 PM	Fairfax County VA	1.00
6:15 PM	Loudon County TN	1.00
6:43 PM	Anderson County SC	1.00
6:59 PM	Wake County NC	1.00
9:25 PM	Carroll County VA	1.00
9:54 PM	Boulder County CO	1.00
9:58 PM	Boulder County CO	1.00
11:35 PM	Goshen County WY	1.00
12:58 AM	Powder River County MT	1.00
12:55 PM	Owen County KY	0.88
4:00 PM	Putnam County WV	0.88
4:20 PM	Hillsborough County FL	0.88
1:03 PM	Jessamine County KY	0.75
2:05 PM	Pender County NC	0.75
3:13 PM	Burke County NC	0.75
3:22 PM	Burke County NC	0.75
3:57 PM	Hamilton County OH	0.75
5:44 PM	Custer County CO	0.75

EF1 tornado5:09 AM CDT
EF1 tornado6:38 AM CDT
EF1 tornado6:07 PM CDT
EF0 tornado7:53 PM CDT
EF0 tornado8:28 PM CDT
EF0 tornado8:51 PM CDT

2015 · On this date in other years · The biggest severe wind days

A report is a single damage or measurement report to the National Weather Service. Several reports can describe one gust front, so reports are not storms.
Reporting has grown with population, spotter networks and the internet, so counts from different decades are not directly comparable.
Thunderstorm wind reports start at 50 knots (58 mph). SPC began flagging measured against estimated speeds in 2006; earlier reports are shown as estimated.

Storm Prediction Center severe weather database, 1955 to 2025. A day is SPC’s calendar date in Central Standard Time; a severe wind day here has 300 or more damaging wind reports, or 15 or more of 75 knots (86 mph) or more.