Hail and Damaging Winds in Maryland, June 4, 2010

Name: Hail and Damaging Winds in Maryland, June 4, 2010
Start: 2010-06-04T16:28
End: 2010-06-04T19:20
Location: Maryland

June 4, 2010 · NWS LWX · 10 events in 2 counties and zones

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $12,000
Crop damage: None recorded
Events: 10

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LWX wrote it up.

An upper-level disturbance passed through the region while a pressure trough at the surface remained nearly stationary. These systems provided the forcing to combine with a warm and humid air mass to bring showers and thunderstorms to the area. There was enough instability along with stronger winds aloft for some thunderstorms to produce large hail and damaging winds.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Jun 4, 2:07 PM EST, 2 hours 21 minutes earlier.

Area forecast discussion, Jun 4, 2:07 PM EST, 2 hours 21 minutes before

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Hazardous weather outlook, Jun 4, 2:10 PM EST, 2 hours 18 minutes before

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In the hours before

Special weather statement, Jun 4, 2:17 PM EST, 2 hours 11 minutes before

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Local storm report, Jun 4, 2:24 PM EST, 2 hours 4 minutes before

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Local storm report, Jun 4, 2:39 PM EST, 1 hour 49 minutes before

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Local storm report, Jun 4, 3:37 PM EST, 51 minutes before

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Special weather statement, Jun 4, 3:38 PM EST, 50 minutes before

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Local storm report, Jun 4, 3:59 PM EST, 29 minutes before

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The radar

The Sterling radar (KLWX), 107 km away, was scanning. The volume nearest the first event began at 21:29 UTC.

Open the radar archive at this moment

Event by event

6 thunderstorm wind, 4 hail. Local standard time, as filed.

Hail, Harford

When: June 4, 4:28 PM EST
Where: Harford County, 0.23 mi SSE of Taylor
Measured: 1.5 in hail
Reported by: Public
Coordinates: 39.577, -76.518

Hail to the size of ping pong balls was reported about three miles southwest of Jarrettsville.

Thunderstorm Wind, Harford

When: June 4, 4:36 PM EST
Where: Harford County, 1.35 mi SE of Upper Xrds
Measured: 57 kt (66 mph) estimated gust
Property damage: $1,000
Reported by: Trained Spotter
Coordinates: 39.538, -76.460

A tree was uprooted onto Route 152 between Route 165 and Pleasantville Road.

Hail, Harford

When: June 4, 4:40 PM EST
Where: Harford County, 0.75 mi W of Scarff
Measured: 1.25 in hail
Reported by: Public
Coordinates: 39.531, -76.444

Hail to the size of half dollars was reported near Fallston.

Thunderstorm Wind, Harford

When: June 4, 4:40 PM EST
Where: Harford County, 0.88 mi W of Scarff
Measured: 57 kt (66 mph) estimated gust
Property damage: $5,000
Reported by: Emergency Manager
Coordinates: 39.532, -76.446

Trees were down along Pleasantville Road.

Thunderstorm Wind, Harford

When: June 4, 4:40 PM EST
Where: Harford County, 0.75 mi W of Scarff
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 39.531, -76.444

Wind gusts were estimated to be around 60 mph.

Thunderstorm Wind, Harford

When: June 4, 4:41 PM EST
Where: Harford County, 0.42 mi N of Scarff
Measured: 57 kt (66 mph) estimated gust
Property damage: $3,000
Reported by: Public
Coordinates: 39.536, -76.429

Trees and lines were down along Oakmont Road.

Hail, Harford

When: June 4, 4:42 PM EST
Where: Harford County, 1.38 mi W of Scarff
Measured: 1 in hail
Reported by: Public
Coordinates: 39.527, -76.456

Hail to the size of quarters was reported near Fallston.

Thunderstorm Wind, Harford

When: June 4, 4:42 PM EST
Where: Harford County, 0.88 mi W of Scarff
Measured: 52 kt (60 mph) estimated gust
Property damage: $500
Reported by: Public
Coordinates: 39.532, -76.446

Branches were broken off a maple tree.

Thunderstorm Wind, Harford

When: June 4, 4:42 PM EST
Where: Harford County, 0.67 mi WSW of Scarff
Measured: 52 kt (60 mph) estimated gust
Property damage: $2,000
Reported by: Fire Department/Rescue
Coordinates: 39.528, -76.442

Trees were down at the Fallston Swim Club.

Hail, Carroll

When: June 4, 7:20 PM EST
Where: Carroll County, 1.45 mi E of Gunpowder
Measured: 1 in hail
Reported by: COOP Observer
Coordinates: 39.719, -76.803

Hail to the size of quarters was reported near Lineboro.

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Maryland in 2010 Every state in 2010 This day in weather history Warnings in Maryland, June 2010

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 239228, 239236, 239230, 239231, 239233, 239235, 239229, 239232, 239234, 239237.