Pennsylvania, 2003

Tropical Storm in Pennsylvania, September 18 to 19, 2003

September 18 to 19, 2003 · NWS CTP · 29 events in 29 counties and zones

Hurricane Isabel came ashore around midday on September 18th between Cape Hatteras and Cape Lookout, North Carolina. The storm continued on a northwesterly track up through Virginia where it was downgraded to a Tropical Storm, and by early Friday morning, September 19th, it was near Latrobe, PA and heading northwest at about 30 miles per hour.

Where it happened

Every event with a place to put it; 29 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
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
29

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 CTP wrote it up.

Hurricane Isabel came ashore around midday on September 18th between Cape Hatteras and Cape Lookout, North Carolina. The storm continued on a northwesterly track up through Virginia where it was downgraded to a Tropical Storm, and by early Friday morning, September 19th, it was near Latrobe, PA and heading northwest at about 30 miles per hour. The storm exited Pennsylvania by early afternoon, the 19th, with improving conditions beginning state-wide.Rain from the outer bands of Isabel reached southeastern areas of PA by about midday on Thursday, September 18th, and continued to spread northwestward across the remainder of the state throughout the day and evening hours. Heavy rain was falling in southern portions of the State College county warning area (CWA) by late afternoon. Gusty winds were also developing over these southern areas as well.Rain and wind continued overnight, affecting most of State College's CWA into Friday morning. Rainfall amounts exceeded 3 inches in far southwestern areas, with much of the central CWA seeing in excess of 1 inch of rain. Far north and northeastern areas saw less than an inch on average.Sustained winds of 30 mph on average accompanied Isabel as it tracked northward, but damaging gusts of between 50 and 60 mph occurred over a wide area. After a summer of above-normal rainfall, creating soft soils and with trees still in full bloom, the gusty winds resulted in hundreds of reports of trees or tree limbs being knocked down. These took down utility poles and power lines in many parts of the CWA, causing numerous power outages as well as property damage. Significant tree and power line damage was reported in 29 of State College's CWA counties, with the most significant damage over the lower Susquehanna region. Statewide, 1.4 million people lost power. The peak wind gust recorded was 73 mph in Lancaster County. One death (Lancaster County) was attributed to the storm, when a car struck a downed tree.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

29 tropical storm. Local standard time, as filed.

Tropical Storm, Southern Centre

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Southern Centre forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.919, -77.820 (the zone’s center; the record gives no point)

Tropical Storm, Adams

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Adams forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
39.872, -77.218 (the zone’s center; the record gives no point)

Tropical Storm, Bedford

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Bedford forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.007, -78.490 (the zone’s center; the record gives no point)

Tropical Storm, Blair

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Blair forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.481, -78.349 (the zone’s center; the record gives no point)

Tropical Storm, Cambria

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Cambria forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.495, -78.714 (the zone’s center; the record gives no point)

Tropical Storm, Columbia

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Columbia forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.049, -76.405 (the zone’s center; the record gives no point)

Tropical Storm, Cumberland

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Cumberland forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.164, -77.266 (the zone’s center; the record gives no point)

Tropical Storm, Dauphin

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Dauphin forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.415, -76.779 (the zone’s center; the record gives no point)

Tropical Storm, Franklin

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Franklin forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
39.927, -77.721 (the zone’s center; the record gives no point)

Tropical Storm, Fulton

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Fulton forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
39.925, -78.113 (the zone’s center; the record gives no point)

Tropical Storm, Huntingdon

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Huntingdon forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.417, -77.981 (the zone’s center; the record gives no point)

Tropical Storm, Juniata

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Juniata forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.531, -77.402 (the zone’s center; the record gives no point)

Tropical Storm, Lancaster

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Lancaster forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.042, -76.248 (the zone’s center; the record gives no point)

Tropical Storm, Lebanon

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Lebanon forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.367, -76.458 (the zone’s center; the record gives no point)

Tropical Storm, McKean

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
McKean forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.808, -78.569 (the zone’s center; the record gives no point)

Tropical Storm, Mifflin

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Mifflin forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.610, -77.617 (the zone’s center; the record gives no point)

Tropical Storm, Montour

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Montour forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.028, -76.659 (the zone’s center; the record gives no point)

Tropical Storm, Northumberland

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Northumberland forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.852, -76.709 (the zone’s center; the record gives no point)

Tropical Storm, Perry

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Perry forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.398, -77.262 (the zone’s center; the record gives no point)

Tropical Storm, Potter

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Potter forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.745, -77.896 (the zone’s center; the record gives no point)

Tropical Storm, Schuylkill

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Schuylkill forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.706, -76.216 (the zone’s center; the record gives no point)

Tropical Storm, Snyder

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Snyder forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.770, -77.070 (the zone’s center; the record gives no point)

Tropical Storm, Somerset

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Somerset forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
39.972, -79.028 (the zone’s center; the record gives no point)

Tropical Storm, Southern Clinton

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Southern Clinton forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.234, -77.638 (the zone’s center; the record gives no point)

Tropical Storm, Southern Lycoming

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Southern Lycoming forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.343, -77.064 (the zone’s center; the record gives no point)

Tropical Storm, Sullivan

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Sullivan forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.446, -76.512 (the zone’s center; the record gives no point)

Tropical Storm, Tioga

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Tioga forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.772, -77.254 (the zone’s center; the record gives no point)

Tropical Storm, Union

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
Union forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
40.963, -77.062 (the zone’s center; the record gives no point)

Tropical Storm, York

When
September 18, 5:00 PM EST to September 19, 7:00 AM EST
Where
York forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
39.920, -76.726 (the zone’s center; the record gives no point)

What these are

Tropical Storm
A tropical cyclone with sustained winds of 34 to 63 knots (39 to 73 mph).

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

The same day elsewhere

More

Every storm in Pennsylvania in 2003Every state in 2003This day in weather historyWarnings in Pennsylvania, September 2003The 2003 hurricane season

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 2026-09-30. Each event’s entry at NCEI: 5337331, 5337392, 5337393, 5337394, 5337395, 5337396, 5337397, 5337398, 5337399, 5337400, 5337401, 5337402, 5337403, 5337404, 5337405, 5337406, 5337407, 5337408, 5337409, 5337410, 5337411, 5337412, 5337413, 5337414, 5337415, 5337416, 5337417, 5337418, 5337419.