Pennsylvania, 2001Tornado in Pennsylvania, September 4, 2001
September 4, 2001 · NWS CTP · 1 event in 1 county or zone
1 tornado, as filed by the National Weather Service.
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
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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 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 State College, PA wrote its last area forecast discussion before the first event at Sep 4, 9:30 AM EST, 3 hours 35 minutes earlier.
Area forecast discussion, Sep 4, 9:30 AM EST, 3 hours 35 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
ISSUED BY NWS PITTSBURGH PA
1030 AM EDT TUE SEP 4 2001
LOW CLDS WILL GRDLY LIFT RMNDR OF MRNG. FRONTAL BNDRY WORKING THRU
NWRN PA ATTM...WILL SLOWLY MOVE SEWD TWD M/D LINE BY EVE. WILL UP
POPS TO 50 AMD RAISE WINDS UP TO 15 MPH. REST SAME.
.CTP...NONE.
Tornado, Northumberland
- When
- September 4, 1:05 PM EST to 1:10 PM EST
- Where
- Northumberland County, 2 mi NW of Montandon to 2 mi SE of Montandon
- Rating
- F1
- Path length
- 0.5 mi
- Path width
- 300 yd
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.980, -76.883
An F1 tornado crossed into Northumberland County from Union County at 13:05 EST. This tornado had estimated wind speeds of 80s mph. The tornado entered the county about 2 miles northwest of the town of Montandon, and tracked southeast, dissipating about 1/2 mile into Northumberland county. Damage was limited a few dozen trees. Nickle size hail was reported at the State Police barraks just northeast of Montandon after to tornado dissipated. There were no injuries or deaths.
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Flash Flooding in Mississippi, September 4, 2001$200,000 · 2 events
- Tornado in Pennsylvania, September 4, 2001$60,000 · F1 · 1 event
- Lightning Strike in New York, September 4, 20012 injured · 1 event
- Lightning Strike in Florida, September 4, 20012 injured · 1 event
- Lightning Strike in New York, September 4, 20011 injured · 1 event
- Flash Flooding and Hail in Oklahoma, September 4, 2001$2,000 · 56 kt wind · 7 events
- Funnel Clouds in Texas, September 4, 20014 events
- Flooding in Alaska, September 4 to 5, 2001$7,000 · 2 events
- Hail and Damaging Wind in New Jersey, September 4, 200165 kt wind · 2 events
- Flood in South Carolina, September 4, 20011 event
- Flash Flood in Texas, September 4, 20011 event
- Flash Flood in Texas, September 4, 20011 event
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: 5263649.