Pennsylvania, 1999Tornadoes 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.
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
- 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.
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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.
- 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.
- Drought in Pennsylvania, July 1 to 31, 1999$500 million · 33 events
- Flash Flooding and Hail in Kansas, July 1, 1999$53 million · 4 in hail · 63 events
- Drought in Virginia, July 1 to 31, 1999$83 million · 23 events
- Tornado and Damaging Winds in Ohio, July 1, 1999$340,000 · F1 · 6 events
- Flash Flood and Damaging Winds in Tennessee, July 1 to 29, 19991 injured · $440,000 · 50 kt wind · 12 events
- Tornado in Kentucky, July 1, 1999$100,000 · F1 · 1 event
- Flooding in Florida, July 1, 1999$225,000 · 2 events
- Hail and Damaging Winds in Oklahoma, July 1, 1999$54,000 · 1 in hail · 23 events
- Lightning Strike in Florida, July 1, 1999$150,000 · 1 event
- Hail and Damaging Winds in South Dakota, July 1 to 27, 1999$32,000 · 1.75 in hail · 30 events
- Flash Flooding and Damaging Winds in Tennessee, July 1 to 2, 1999$75,000 · 50 kt wind · 10 events
- Tornadoes and Flash Flooding in Kansas, July 1 to 30, 1999$200 · F0 · 51 events
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.