Storm reports for August 18, 2021

Name: NOAA storm reports, United States, August 18, 2021
Creator: NOAA/NWS Storm Prediction Center

NOAA recorded 3 hail reports, 49 wind reports and 8 tornado reports in 6 states on August 18, 2021.

in 6 states; 60
Storm reports: Near 36.41, -112.13, AZ; 1.75 in
Largest hail: About 4 miles from Phoenix, AZ; 64 mph
Highest gust: Highest rating EF1, about 12 miles from Harrisburg, PA; 8
Tornado reports

Hail, inches

0.75
1
1.5
2
2.5
3+

Dots: reports. Shading: radar estimate.

Wind report
Tornado and its path
Surveyed tornado path

Sources: NOAA/NWS Storm Prediction Center reports; radar hail estimates from NOAA MRMS; damage surveys from the NWS Damage Assessment Toolkit

Hail, inches

0.75
1
1.5
2
2.5
3+

Dots: reports. Shading: radar estimate.

Wind report
Tornado and its path
Surveyed tornado path

Source: NOAA/NWS Storm Prediction Center, final severe weather database (from NOAA's Storm Data). Report day: 12:00 UTC on August 18, 2021 to 12:00 UTC the next day. Times are Central.

Select a dot or a path for the report. NWS survey teams walked the shaded paths after the storm; each is drawn at the widest width they found, so it can look wider than the damage at any one spot.

Reports by hour

Hail3, most at 3 PM

Wind49, most at 4 PM

Tornado8, most at 11 AM

Reports per hour, Central time. Each row has its own scale.

Every report

Source: NOAA/NWS Storm Prediction Center.

Time	Rating	Where	Path
11:46 AM	EF0	About 32 miles from Harrisburg, PA	0.13 mi long, 10 yd wide
2:16 PM	EF0	About 18 miles from York, PA	0.62 mi long, 75 yd wide
3:35 PM	EF0	About 37 miles from Harrisburg, PA	0.45 mi long, 15 yd wide
5:31 PM	EF1	About 12 miles from Harrisburg, PA	5.54 mi long, 150 yd wide
7:35 PM	EF0	About 9 miles from York, PA	0.68 mi long, 125 yd wide
8:15 PM	EF1	About 13 miles from Reading, PA	1.07 mi long, 125 yd wide
11:25 PM	EF1	About 21 miles from Philadelphia, PA	8.76 mi long, 140 yd wide
1:38 AM	EF0	About 35 miles from New York, NY	0.87 mi long, 50 yd wide

Time	Gust	Where
7:47 AM	49 mph	About 29 miles from Huntsville, AL
9:33 AM	60 mph	About 49 miles from Hagerstown, MD
9:34 AM	60 mph	About 49 miles from Hagerstown, MD
10:11 AM	60 mph	Near 40.36, -78.47, PA
12:10 PM	60 mph	About 16 miles from Harrisburg, PA
1:43 PM	60 mph	Near 41.12, -77.51, PA
1:59 PM	60 mph	About 21 miles from Harrisburg, PA
2:24 PM	60 mph	About 17 miles from York, PA
2:39 PM	60 mph	About 11 miles from Harrisburg, PA
3:20 PM	60 mph	About 4 miles from Phoenix, AZ
3:38 PM	60 mph	In Phoenix, AZ
3:40 PM	64 mph	About 4 miles from Phoenix, AZ

Show all 49 wind reports

Time	Gust	Where
3:53 PM	60 mph	About 25 miles from Hagerstown, MD
4:15 PM	49 mph	Near 34.66, -87.73, AL
4:15 PM	49 mph	About 59 miles from Huntsville, AL
4:19 PM	60 mph	About 12 miles from Hagerstown, MD
4:35 PM	60 mph	About 28 miles from Harrisburg, PA
4:35 PM	49 mph	Near 34.85, -88.08, AL
4:37 PM	60 mph	About 44 miles from Harrisburg, PA
4:41 PM	60 mph	About 11 miles from Harrisburg, PA
4:43 PM	60 mph	About 24 miles from Hagerstown, MD
4:48 PM	60 mph	About 14 miles from Harrisburg, PA
5:08 PM	60 mph	About 19 miles from Harrisburg, PA
5:08 PM	60 mph	About 12 miles from Harrisburg, PA
5:11 PM	60 mph	About 17 miles from Phoenix, AZ
5:21 PM	49 mph	Near 34.60, -87.75, AL
5:30 PM	60 mph	About 13 miles from Harrisburg, PA
5:32 PM	63 mph	About 22 miles from Lancaster, PA
6:16 PM	60 mph	About 18 miles from York, PA
6:45 PM	60 mph	About 19 miles from Huntsville, AL
6:58 PM	60 mph	About 10 miles from Lancaster, PA
6:58 PM	60 mph	About 9 miles from Lancaster, PA
6:58 PM	58 mph	About 15 miles from Phoenix, AZ
7:00 PM	49 mph	About 17 miles from Huntsville, AL
7:04 PM	49 mph	About 14 miles from Huntsville, AL
7:15 PM	49 mph	About 4 miles from Huntsville, AL
7:20 PM	60 mph	About 7 miles from Lancaster, PA
7:32 PM	63 mph	About 12 miles from Reading, PA
7:45 PM	58 mph	About 18 miles from Phoenix, AZ
8:21 PM	60 mph	About 4 miles from Lancaster, PA
8:33 PM	58 mph	About 7 miles from Reading, PA
8:50 PM	64 mph	Near 42.07, -104.18, WY
10:25 PM	58 mph	About 18 miles from Allentown, PA
11:01 PM	58 mph	About 26 miles from Philadelphia, PA
11:15 PM	63 mph	About 24 miles from Philadelphia, PA
11:25 PM	63 mph	About 20 miles from Philadelphia, PA
11:40 PM	58 mph	About 16 miles from Philadelphia, PA
12:19 AM	58 mph	About 10 miles from Philadelphia, PA
12:43 AM	58 mph	About 6 miles from Philadelphia, PA

By state

State	Reports	Hail	Wind	Tornado
Pennsylvania	41	1	33	7
Alabama	8	0	8	0
Arizona	8	2	6	0
New Jersey	1	0	0	1
Tennessee	1	0	1	0
Wyoming	1	0	1	0

Cities with reports nearby

Reports within 15 miles of the center of each city we track.

City	Largest hail	Highest gust	Tornado reports
Phoenix, AZ	0.75 in	64 mph	0
Hagerstown, MD	None	60 mph	0
Harrisburg, PA	None	60 mph	1
Huntsville, AL	None	49 mph	0
Lancaster, PA	None	60 mph	0
Philadelphia, PA	None	58 mph	0
Reading, PA	None	63 mph	1
York, PA	None	None	1

Reports are what observers recorded near a location, not a complete record of every storm. They don’t describe conditions at any building.

Time	Size	Where
3:00 PM	0.75 in	About 7 miles from Phoenix, AZ
7:50 PM	1.75 in	Near 36.41, -112.13, AZ
10:03 PM	0.75 in	About 22 miles from Reading, PA