Pennsylvania, 1999

Tornadoes and Hail in Pennsylvania, July 1 to 31, 1999

July 1 to 31, 1999 · NWS CTP · 109 events in 28 counties and zones

84 thunderstorm wind, 21 hail, 3 tornado, 1 lightning, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
1
Injuries
3
Property damage
$1.4 million
Crop damage
$500,000
Events
109

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.

The radar

The State College radar (KCCX), 105 km away, was scanning. The volume nearest the first event began at 21:58 UTC.

Open the radar archive at this moment

Event by event

84 thunderstorm wind, 21 hail, 3 tornado, 1 lightning. Local standard time, as filed.

Thunderstorm Wind, Fulton

When
July 1, 5:00 PM EST
Where
Fulton County, Harrisonville
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
39.980, -78.080

A number of trees were downed.

Tornado, Lycoming

When
July 1, 6:00 PM EST
Where
Lycoming County, Bodines to 3 mi E of Bodines
Rating
F0
Path length
0.5 mi
Path width
200 yd
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.450, -76.930

A small tornado touched down on McNamie Hill Road about 3 miles east of Bodines near Kellysburg. The storm sheared off about 50 to 75 trees along a 1/2 mile path. a resident on McNamie Hill Road reported seeing debris from the trees being swept in a circle as the storm passed. The area nearby is mostly state forest land.

Tornado, Sullivan

When
July 1, 6:30 PM EST to 6:40 PM EST
Where
Sullivan County, Hugos Corners to 5 mi E of Hugos Corners
Rating
F1
Path length
5 mi
Path width
200 yd
Property damage
$200,000
Reported by
EMERGENCY MANAGER
Coordinates
41.520, -76.670

An F1 tornado touched down in Elkland township about two miles northwest of Lincoln Falls on route 154, then moved northeast through a crossroads near Eldredsville to Hugo corners. Trees were blown down as the storm crossed route 154. Just west of McCarty Ridge Road a group of campers narrowly missed injury when a stand of trees were blown over near their site. The heaviest damage was along McCarty Ridge Road near the town of Eldredsville. A well built older home was lifted just slightly on its foundation. The occupants told of seeing a cloud of dust appear as they watched from their basement. A barn nearby was leveled. The roof flew off a sawmill and landed largely intact about 100 feet northwest of the mill. Several other homes had some structural damage and one had shingles removed from a roof. A travel trailer was overturned and an outdoor shed was destroyed. A couple mobile homes were damaged by debris, but were not moved off their foundations. Tree damage was sporadic along the path with a number of trees down in the Hugo Corners area near the end of the path.

Thunderstorm Wind, Elk

When
July 1, 9:00 PM EST
Where
Elk County, Lake City
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.370, -78.900

Trees and power lines downed.

Thunderstorm Wind, York

When
July 2, 5:10 PM EST
Where
York County, Spry
Property damage
$10,000
Reported by
BROADCAST MEDIA
Coordinates
39.920, -76.680

Trees down and power out.

Thunderstorm Wind, Warren

When
July 6, 4:05 PM EST
Where
Warren County, Warren
Property damage
$30,000
Reported by
EMERGENCY MANAGER
Coordinates
41.850, -79.150

Trees and wires down in Warren and other parts of the county.

Thunderstorm Wind, McKean

When
July 6, 4:45 PM EST
Where
McKean County, Duke Center
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.950, -78.500

Trees were down in Otto Township near Duke Center.

Thunderstorm Wind, McKean

When
July 6, 4:50 PM EST
Where
McKean County, Bradford
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.970, -78.650

Trees and power lines down.

Thunderstorm Wind, Potter

When
July 6, 5:20 PM EST
Where
Potter County, Coudersport
Property damage
$50,000
Reported by
EMERGENCY MANAGER
Coordinates
41.770, -78.020

Trees were down on several houses.

Thunderstorm Wind, Potter

When
July 6, 5:20 PM EST
Where
Potter County, Galeton
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.730, -77.650

Trees down.

Thunderstorm Wind, Elk

When
July 6, 5:25 PM EST
Where
Elk County, St Marys
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.430, -78.580

Trees and power lines down.

Thunderstorm Wind, Elk

When
July 6, 5:40 PM EST
Where
Elk County, Glen Hazel
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.530, -78.630

Trees and power lines down.

Thunderstorm Wind, Cameron

When
July 6, 5:45 PM EST
Where
Cameron County, Emporium
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.500, -78.250

Trees and power lines down.

Thunderstorm Wind, Tioga

When
July 6, 6:00 PM EST
Where
Tioga County, Wellsboro
Property damage
$15,000
Reported by
EMERGENCY MANAGER
Coordinates
41.750, -77.300

Trees and wires down.

Thunderstorm Wind, Clinton

When
July 6, 6:14 PM EST
Where
Clinton County, Renovo
Property damage
$15,000
Reported by
TRAINED SPOTTER
Coordinates
41.330, -77.770

Trees on wires.

Thunderstorm Wind, Clinton

When
July 6, 6:35 PM EST
Where
Clinton County, South Renovo
Property damage
$10,000
Reported by
TRAINED SPOTTER
Coordinates
41.320, -77.750

Trees down in starburst pattern.

Thunderstorm Wind, Lycoming

When
July 6, 6:40 PM EST
Where
Lycoming County, Jersey Shr
Property damage
$15,000
Reported by
AMATEUR RADIO
Coordinates
41.200, -77.270

Trees were down in Jersey Shore, Saladasburg and Haneyville.

Thunderstorm Wind, Sullivan

When
July 6, 7:00 PM EST
Where
Sullivan County, Forksville
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.500, -76.620

Trees were down on route 154 near Forksville.

Thunderstorm Wind, Cambria

When
July 6, 7:30 PM EST
Where
Cambria County, Colver
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.550, -78.780

Trees down.

Lightning, Cambria

When
July 6, 7:30 PM EST
Where
Cambria County, Colver
Injuries
1 direct, 0 indirect
Reported by
EMERGENCY MANAGER
Coordinates
40.495, -78.714 (the zone’s center; the record gives no point)

A man was shocked by lightning while taking a shower. He was not seriously injured.

Thunderstorm Wind, Elk

When
July 9, 3:10 PM EST
Where
Elk County, Brockport
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.250, -78.730

Trees down.

Thunderstorm Wind, Elk

When
July 9, 3:12 PM EST
Where
Elk County, Toby Mines
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.350, -78.620

Many trees down.

Hail, Elk

When
July 9, 3:15 PM EST
Where
Elk County, Ridgway to 1 mi of Ridgway
Measured
1 in hail
Reported by
EMERGENCY MANAGER
Coordinates
41.420, -78.750

Hail, Clearfield

When
July 9, 3:40 PM EST
Where
Clearfield County, Quehanna
Measured
0.88 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.180, -78.150

Nickel size hail.

Thunderstorm Wind, Clinton

When
July 9, 4:15 PM EST
Where
Clinton County, Lock Haven
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.130, -77.430

Trees and power lines down.

Thunderstorm Wind, Warren

When
July 9, 4:25 PM EST
Where
Warren County, Garland
Deaths
1 direct, 0 indirect
Injuries
2 direct, 0 indirect
Property damage
$150,000
Reported by
EMERGENCY MANAGER
Coordinates
41.820, -79.450

Downburst winds blew down dozens of trees. A tree fell on a car on route 27 just south of Garland, fatally injuring the 21 year old female driver, critically injuring the second female passenger, and seriously injuring the third. Close by another tree fell and completely smashed an unoccupied auto. Just to the east of Garland, a barn was partially unroofed and a silo was damaged.

Thunderstorm Wind, Centre

When
July 9, 4:35 PM EST
Where
Centre County, Nittany
Property damage
$5,000
Reported by
TRAINED SPOTTER
Coordinates
41.000, -77.530

Trees down.

Thunderstorm Wind, Clinton

When
July 9, 4:35 PM EST
Where
Clinton County, Lamar
Property damage
$5,000
Reported by
TRAINED SPOTTER
Coordinates
41.020, -77.530

Trees down.

Hail, Union

When
July 9, 4:50 PM EST
Where
Union County, 2 mi N of Laurelton
Measured
1 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.920, -77.200

Thunderstorm Wind, McKean

When
July 9, 6:26 PM EST
Where
McKean County, Bradford
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.970, -78.650

Trees down.

Tornado, Warren

When
July 9, 6:30 PM EST to 6:35 PM EST
Where
Warren County, Tidioute
Rating
F1
Path length
3 mi
Path width
100 yd
Property damage
$150,000
Reported by
EMERGENCY MANAGER
Coordinates
41.680, -79.420

A small tornado touched down on State Route 3005 just across the Allegheny River south of Tidioute. The storm tracked east paralleling the road for about three miles crossing Red House Hill Road near McKean Corners. Damage was mostly to trees with one home having a chimney damaged. A broad area of downburst damage associated with the storm extended south from Red House Hill Road all the way to the Pennsylvania border along Route 3005 (Kelly Hill Road). Hundreds of trees were down, power poles were snapped off, and many hunting and recreational cabins in the area had some structural damage due to falling trees. This was a low F1 event with winds probably best estimated on the order of 80 to 90 mph. In addition, trees were downed in many locations of Warren County.

Thunderstorm Wind, Warren

When
July 9, 6:45 PM EST
Where
Warren County, Sheffield
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
41.700, -79.030

Trees down.

Thunderstorm Wind, Elk

When
July 9, 7:30 PM EST
Where
Elk County, Ridgway
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.430, -78.750

Trees were down in Ridgway and other parts of the county.

Thunderstorm Wind, Potter

When
July 9, 7:35 PM EST
Where
Potter County, 3 mi S of Bingham Center
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.900, -77.780

Trees were down in Ulysses.

Thunderstorm Wind, Tioga

When
July 9, 7:40 PM EST
Where
Tioga County, West Field
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.920, -77.550

Trees down.

Thunderstorm Wind, Cameron

When
July 9, 7:45 PM EST
Where
Cameron County, Emporium
Property damage
$20,000
Reported by
EMERGENCY MANAGER
Coordinates
41.500, -78.250

Trees were down in Emporium and other parts of the county.

Thunderstorm Wind, Clearfield

When
July 9, 7:55 PM EST
Where
Clearfield County, Penfield
Property damage
$20,000
Reported by
NWS STORM SURVEY
Coordinates
41.220, -78.580

Many trees down in Penfield and on Route 153 west of town.

Thunderstorm Wind, Cameron

When
July 9, 8:00 PM EST
Where
Cameron County, Sinnamahoning
Property damage
$10,000
Reported by
POST OFFICE
Coordinates
41.320, -78.100

Trees down and power out.

Thunderstorm Wind, Potter

When
July 9, 8:00 PM EST
Where
Potter County, Carter Camp to 5 mi of Carter Camp
Property damage
$5,000
Reported by
PARK/FOREST SERVICE
Coordinates
41.630, -77.820

Trees were down on a state forest road 3 southwest of Cherry Springs or about 5 miles west of Carter Camp.

Thunderstorm Wind, Clearfield

When
July 9, 8:10 PM EST
Where
Clearfield County, Tyler to 2 mi of Tyler
Property damage
$30,000
Reported by
POST OFFICE
Coordinates
41.250, -78.570

A tree fell on a couple cars causing serious damage in the town of Hollywood about 2 miles northwest of Tyler.

Thunderstorm Wind, Elk

When
July 9, 8:10 PM EST
Where
Elk County, 2 mi S of Force
Property damage
$5,000
Reported by
POST OFFICE
Coordinates
41.220, -78.520

Trees down.

Thunderstorm Wind, Cambria

When
July 9, 8:15 PM EST
Where
Cambria County, Emeigh
Property damage
$15,000
Reported by
TRAINED SPOTTER
Coordinates
40.700, -78.780

Tree fell on a car.

Thunderstorm Wind, Clearfield

When
July 9, 8:25 PM EST
Where
Clearfield County, Beccaria
Property damage
$10,000
Reported by
POST OFFICE
Coordinates
40.770, -78.450

Trees and power lines down.

Thunderstorm Wind, Clinton

When
July 9, 8:30 PM EST
Where
Clinton County, Renovo
Measured
52 kt (60 mph)
Property damage
$15,000
Reported by
TRAINED SPOTTER
Coordinates
41.330, -77.770

Trees down and winds G 60 mph.

Thunderstorm Wind, Blair

When
July 9, 8:39 PM EST
Where
Blair County, Tyrone
Property damage
$15,000
Reported by
EMERGENCY MANAGER
Coordinates
40.680, -78.230

Trees down in Tyrone and Altoona.

Thunderstorm Wind, Centre

When
July 9, 8:50 PM EST
Where
Centre County, State College
Measured
52 kt (60 mph)
Property damage
$10,000
Reported by
TRAINED SPOTTER
Coordinates
40.780, -77.850

Trees were down. A wind Gust to 60 mph was recorded at Penn State University.

Thunderstorm Wind, Tioga

When
July 9, 8:50 PM EST
Where
Tioga County, Liberty
Property damage
$25,000
Reported by
POST OFFICE
Coordinates
41.570, -77.120

A tree was blown down on a car and a home.

Thunderstorm Wind, Centre

When
July 9, 8:55 PM EST
Where
Centre County, Madisonburg
Property damage
$10,000
Reported by
TRAINED SPOTTER
Coordinates
40.920, -77.520

Trees down.

Thunderstorm Wind, Huntingdon

When
July 9, 8:55 PM EST
Where
Huntingdon County, Warriors Mark
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.700, -78.130

Trees and power lines down.

Thunderstorm Wind, Lycoming

When
July 9, 9:00 PM EST
Where
Lycoming County, Jersey Shr
Property damage
$15,000
Reported by
EMERGENCY MANAGER
Coordinates
41.200, -77.270

Trees down on Route 44 near Jersey Shore and Route 973 near Salladasburg.

Thunderstorm Wind, Huntingdon

When
July 9, 9:03 PM EST
Where
Huntingdon County, Mc Alevys Fort
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.630, -77.820

Trees down.

Thunderstorm Wind, Snyder

When
July 9, 9:05 PM EST
Where
Snyder County, Middleburg
Property damage
$10,000
Reported by
TRAINED SPOTTER
Coordinates
40.780, -77.050

Trees down.

Thunderstorm Wind, Clinton

When
July 9, 9:10 PM EST
Where
Clinton County, Loganton
Property damage
$10,000
Reported by
TRAINED SPOTTER
Coordinates
41.030, -77.320

Trees down.

Thunderstorm Wind, Mifflin

When
July 9, 9:10 PM EST
Where
Mifflin County, Burnham
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.630, -77.570

Trees down.

Thunderstorm Wind, Sullivan

When
July 9, 9:15 PM EST
Where
Sullivan County, Dushore
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.520, -76.420

Tree and power lines down.

Thunderstorm Wind, Juniata

When
July 9, 9:30 PM EST
Where
Juniata County, 2 mi S of Evendale
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.630, -77.170

Trees were down in Monroe Township near Evandale and Kellerville.

Thunderstorm Wind, Montour

When
July 9, 9:40 PM EST
Where
Montour County, Danville
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.970, -76.600

Trees down.

Thunderstorm Wind, Union

When
July 9, 9:45 PM EST
Where
Union County, Mifflinburg
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.920, -77.030

Several trees down.

Thunderstorm Wind, Northumberland

When
July 9, 9:50 PM EST
Where
Northumberland County, Sunbury
Property damage
$20,000
Reported by
TRAINED SPOTTER
Coordinates
40.870, -76.770

Trees down in Sunbury, Northumberland and Herndon.

Thunderstorm Wind, Perry

When
July 9, 9:50 PM EST
Where
Perry County, Liverpool
Property damage
$15,000
Reported by
POST OFFICE
Coordinates
40.570, -76.980

Tree down on route 235 involved in a auto accident.

Thunderstorm Wind, Dauphin

When
July 9, 10:00 PM EST
Where
Dauphin County, Millersburg
Property damage
$5,000
Reported by
POST OFFICE
Coordinates
40.550, -76.930

Large limb down in the town square.

Thunderstorm Wind, Bedford

When
July 9, 10:35 PM EST
Where
Bedford County, Centerville
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
39.830, -78.650

Tree down south of town.

Thunderstorm Wind, Somerset

When
July 9, 10:45 PM EST
Where
Somerset County, Sipesville
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
40.100, -79.080

Tree down on Route 601.

Thunderstorm Wind, Cambria

When
July 17, 3:00 PM EST
Where
Cambria County, Johnstown
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.330, -78.920

Trees and wires down.

Hail, Huntingdon

When
July 17, 3:10 PM EST
Where
Huntingdon County, Huntingdon
Measured
1 in hail
Reported by
EMERGENCY MANAGER
Coordinates
40.500, -78.020

Thunderstorm Wind, Mifflin

When
July 17, 3:30 PM EST
Where
Mifflin County, Allensville
Property damage
$5,000
Reported by
NWS STORM SURVEY
Coordinates
40.530, -77.820

Trees down.

Thunderstorm Wind, Tioga

When
July 17, 3:50 PM EST
Where
Tioga County, Knoxville
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.950, -77.450

Trees down in Knoxville and 1 inch hail fell in Westfield.

Thunderstorm Wind, Potter

When
July 17, 4:15 PM EST
Where
Potter County, Austin
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.630, -78.100

A dozen trees were down in Homer township near Austin.

Thunderstorm Wind, Centre

When
July 17, 4:30 PM EST
Where
Centre County, Spring Mills
Property damage
$10,000
Reported by
TRAINED SPOTTER
Coordinates
40.850, -77.570

Trees were down and power out. Hail of 1 inch size was reported.

Thunderstorm Wind, Lancaster

When
July 18, 8:00 PM EST
Where
Lancaster County, Mt Joy
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.120, -76.500

Several trees were blown down.

Thunderstorm Wind, Dauphin

When
July 22, 4:10 PM EST
Where
Dauphin County, Linglestown
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.350, -76.780

Trees and wires down.

Thunderstorm Wind, York

When
July 22, 4:40 PM EST
Where
York County, Lewisberry
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
40.130, -76.870

Tree down.

Thunderstorm Wind, Centre

When
July 25, 3:22 PM EST
Where
Centre County, State College
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.780, -77.850

Trees were down in a couple locations.

Thunderstorm Wind, Somerset

When
July 28, 1:10 PM EST
Where
Somerset County, Somerset
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
40.020, -79.080

Tree down in Somerset.

Thunderstorm Wind, York

When
July 28, 4:10 PM EST
Where
York County, Hanover
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
39.800, -76.980

A tree was blown down in Hanover.

Hail, Tioga

When
July 30, 1:20 PM EST
Where
Tioga County, Mansfield
Measured
1.5 in hail
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
41.800, -77.080

Ping Pong Ball size hail fell.

Hail, Lycoming

When
July 30, 2:41 PM EST to 2:55 PM EST
Where
Lycoming County, Montoursville
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.250, -76.930

Hail, Lycoming

When
July 30, 2:50 PM EST
Where
Lycoming County, Williamsport
Measured
1 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.250, -77.000

Hail fell for about 15 minutes in the Williamsport area.

Hail, Lycoming

When
July 30, 3:05 PM EST
Where
Lycoming County, Montgomery
Measured
1 in hail
Reported by
AMATEUR RADIO
Coordinates
41.180, -76.880

Hail, Lycoming

When
July 30, 3:34 PM EST
Where
Lycoming County, Warrensville
Measured
1.75 in hail
Reported by
AMATEUR RADIO
Coordinates
41.330, -76.970

Hail, Dauphin

When
July 30, 3:45 PM EST
Where
Dauphin County, Millersburg
Measured
0.8 in hail
Reported by
POST OFFICE
Coordinates
40.550, -76.930

Hail, Lycoming

When
July 30, 3:55 PM EST
Where
Lycoming County, Williamsport
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.250, -77.000

Hail, Northumberland

When
July 30, 4:00 PM EST
Where
Northumberland County, Milton
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.020, -76.870

Hail, Union

When
July 30, 4:00 PM EST
Where
Union County, Allenwood
Measured
0.8 in hail
Reported by
POST OFFICE
Coordinates
41.120, -76.900

Hail, Lycoming

When
July 30, 4:00 PM EST
Where
Lycoming County, Montgomery
Measured
1.75 in hail
Reported by
AMATEUR RADIO
Coordinates
41.180, -76.880

Two separate thunderstorms formed over the Williamsport area and moved southeast across the mountain into Montgomery, dropping hail from a dime to the size of golf balls.

Hail, Snyder

When
July 30, 4:28 PM EST
Where
Snyder County, Selinsgrove
Measured
1.75 in hail
Reported by
EMERGENCY MANAGER
Coordinates
40.800, -76.850

Hail, Union

When
July 30, 4:30 PM EST
Where
Union County, New Columbia
Measured
1.75 in hail
Reported by
EMERGENCY MANAGER
Coordinates
41.030, -76.880

Thunderstorm Wind, Northumberland

When
July 30, 4:32 PM EST
Where
Northumberland County, Dalmatia
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.650, -76.900

Trees and power lines down.

Hail, Lycoming

When
July 30, 4:45 PM EST
Where
Lycoming County, Oval
Measured
1 in hail
Reported by
EMERGENCY MANAGER
Coordinates
41.150, -77.170

Hail, Lycoming

When
July 30, 4:45 PM EST
Where
Lycoming County, 2 mi E of Jersey Shr
Measured
1 in hail
Crop damage
$500,000
Reported by
NWS EMPLOYEE(OFF DUTY)
Coordinates
41.200, -77.230

Fruit and tobacco crops on farms in the Nipponose Valley East of Jersey Shore were devastated by hail. Seven orchards were heavily damaged, with an estimated 3/4 of the apple crop lost in what was to be an outstanding year. Tobacco farmers lost their entire crop, and corn was heavily damaged.

Thunderstorm Wind, Dauphin

When
July 30, 5:03 PM EST
Where
Dauphin County, Millersburg
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.550, -76.930

Trees down.

Thunderstorm Wind, Dauphin

When
July 30, 5:33 PM EST
Where
Dauphin County, Halifax
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.470, -76.920

Trees down.

Thunderstorm Wind, Juniata

When
July 30, 5:50 PM EST
Where
Juniata County, Mc Alisterville
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
40.630, -77.280

Trees down on Route 2017.

Hail, Perry

When
July 30, 6:00 PM EST
Where
Perry County, Newport
Measured
1.75 in hail
Reported by
EMERGENCY MANAGER
Coordinates
40.470, -77.130

Golf ball size hail.

Thunderstorm Wind, Perry

When
July 30, 6:10 PM EST
Where
Perry County, Duncannon
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
40.380, -77.020

Trees and wires down.

Thunderstorm Wind, York

When
July 30, 6:35 PM EST
Where
York County, York
Property damage
$30,000
Reported by
EMERGENCY MANAGER
Coordinates
39.950, -76.720

A roof was blown off a home on Gay Street. .

Thunderstorm Wind, Cumberland

When
July 30, 6:40 PM EST
Where
Cumberland County, Carlisle
Property damage
$15,000
Reported by
EMERGENCY MANAGER
Coordinates
40.200, -77.180

A tree fell onto a house.

Hail, York

When
July 30, 6:50 PM EST
Where
York County, Seven Vlys
Measured
2.5 in hail
Reported by
EMERGENCY MANAGER
Coordinates
39.850, -76.770

Hail the size of peaches fell in Seven Valleys, Jocobus, Glen Rock and Shrewsbury.

Hail, Somerset

When
July 31, 3:35 PM EST
Where
Somerset County, 5 mi NW of Salisbury
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
39.800, -79.150

Golf ball size hail fell on Mt Davis about 5 miles northwest of Salisbury.

Thunderstorm Wind, Cambria

When
July 31, 4:35 PM EST
Where
Cambria County, Patton
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
40.630, -78.650

Wires down.

Thunderstorm Wind, Blair

When
July 31, 5:22 PM EST
Where
Blair County, Bellwood
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
40.600, -78.330

Trees down.

Thunderstorm Wind, Warren

When
July 31, 5:30 PM EST
Where
Warren County, Columbus
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.950, -79.580

Trees down.

Thunderstorm Wind, Warren

When
July 31, 5:55 PM EST
Where
Warren County, Russell
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.950, -79.150

Trees down.

Thunderstorm Wind, Warren

When
July 31, 5:55 PM EST
Where
Warren County, Youngsville
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.850, -79.330

Trees down.

Thunderstorm Wind, McKean

When
July 31, 6:35 PM EST
Where
McKean County, Bradford
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
41.970, -78.650

Power Lines down.

Thunderstorm Wind, Elk

When
July 31, 6:52 PM EST
Where
Elk County, Wilcox
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
41.580, -78.700

Power lines down.

Thunderstorm Wind, Elk

When
July 31, 7:00 PM EST
Where
Elk County, James City
Property damage
$5,000
Reported by
EMERGENCY MANAGER
Coordinates
41.620, -78.850

Trees down.

Thunderstorm Wind, Elk

When
July 31, 7:15 PM EST
Where
Elk County, St Marys
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.430, -78.580

Trees down.

Thunderstorm Wind, Clearfield

When
July 31, 7:55 PM EST
Where
Clearfield County, 3 mi NE of Du Bois
Property damage
$10,000
Reported by
EMERGENCY MANAGER
Coordinates
41.150, -78.730

Trees and wires were down at Treasure Lake 3 miles northeast of Dubois.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Thunderstorm Wind, Warren1999-08-0921FemaleVehicle/Towed TrailerDirect

What these are

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.
Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Lightning
A lightning strike that killed, injured or caused damage.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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

The same day elsewhere

More

Every storm in Pennsylvania in 1999Every state in 1999This day in weather historyThe tornado archive for Pennsylvania, 1999Warnings in Pennsylvania, July 1999

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: 5710197, 5710298, 5710299, 5710300, 5710301, 5710302, 5710303, 5710304, 5710305, 5710306, 5710307, 5710308, 5710309, 5710310, 5710928, 5710311, 5710312, 5710390, 5710391, 5710392, 5710393, 5710394, 5710395, 5710396, 5710397, 5710398, 5710399, 5710400, 5710401, 5710402, 5710403, 5710404, 5710405, 5710406, 5710407, 5710683, 5710557, 5710558, 5710559, 5710560, and more.