Winter Storm, Armstrong
- When
- March 4, 10:00 PM EST to March 5, 4:00 AM EST
- Where
- Armstrong forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.812, -79.464 (the zone’s center; the record gives no point)
Winter Storm in Pennsylvania, March 4 to 5, 2001
A winter storm moving up the Tennessee Valley spread heavy snow across portions of western Pennsylvania. County snowfall totals across the area were as follows: Armstrong, 4-6 inches; Butler, 4-6 inches; Clarion, 6-7 inches; Fayette, 7-8 inches; Forest, 4-6 inches; Indiana, 3-6 inches; Jefferson, 4-6 inches; Westmoreland, 3-6 inches.
Where it happened
Every event with a place to put it; 5 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 8
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 PBZ wrote it up.
A winter storm moving up the Tennessee Valley spread heavy snow across portions of western Pennsylvania. County snowfall totals across the area were as follows: Armstrong, 4-6 inches; Butler, 4-6 inches; Clarion, 6-7 inches; Fayette, 7-8 inches; Forest, 4-6 inches; Indiana, 3-6 inches; Jefferson, 4-6 inches; Westmoreland, 3-6 inches.
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 Pittsburgh, PA wrote its last area forecast discussion before the first event at Mar 4, 7:55 PM EST, 2 hours 5 minutes earlier.
Area forecast discussion, Mar 4, 7:55 PM EST, 2 hours 5 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 755 PM EST SUN MAR 4 2001 SVRL REPORTS OF THUNDER ACRS ERN/SERN PORTION OF CWA...HAVE UPDATED TO REFLECT THIS. REMAINDER UNCHANGED. STRAGER .PBZ... MD...WINTER STORM WARNING UNTIL 1000 PM EST MONDAY FOR ZONE MDZ001. OH...WINTER STORM WARNING UNTIL 1000 PM EST MONDAY FOR ZONES OHZ039...OHZ048...OHZ057>058...OHZ068. WINTER STORM WARNING UNTIL 1000 PM EST MONDAY FOR ZONES OHZ040>041... OHZ049>050...OHZ059...OHZ069. PA...WINTER STORM WARNING UNTIL 1000 PM EST MONDAY FOR ZONES PAZ007>009...PAZ013>016...PAZ022. WINTER STORM WARNING UNTIL 1000 PM EST MONDAY FOR ZONES PAZ023... PAZ030...PAZ032. WINTER STORM WARNING UNTIL 1000 PM EST MONDAY FOR ZONES PAZ020>021... PAZ029...PAZ031. WV...WINTER STORM WARNING UNTIL 1000 PM EST MONDAY FOR ZONES WVZ023...WVZ041. WINTER STORM WARNING UNTIL 1000 PM EST MONDAY FOR ZONES WVZ001>004...2 WVZ012...WVZ021>022.
The radar
The national radar mosaic for the moment the first event began.
Event by event
8 winter storm. Local standard time, as filed.
Winter Storm, Butler
- When
- March 4, 10:00 PM EST to March 5, 4:00 AM EST
- Where
- Butler forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.912, -79.913 (the zone’s center; the record gives no point)
Winter Storm, Clarion
- When
- March 4, 10:00 PM EST to March 5, 4:00 AM EST
- Where
- Clarion forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.192, -79.421 (the zone’s center; the record gives no point)
Winter Storm, Fayette
- When
- March 4, 10:00 PM EST to March 5, 4:00 AM EST
- Where
- Fayette forecast zone
- Reported by
- LAW ENFORCEMENT
Winter Storm, Forest
- When
- March 4, 10:00 PM EST to March 5, 4:00 AM EST
- Where
- Forest forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.513, -79.236 (the zone’s center; the record gives no point)
Winter Storm, Indiana
- When
- March 4, 10:00 PM EST to March 5, 4:00 AM EST
- Where
- Indiana forecast zone
- Reported by
- LAW ENFORCEMENT
Winter Storm, Jefferson
- When
- March 4, 10:00 PM EST to March 5, 4:00 AM EST
- Where
- Jefferson forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.128, -78.999 (the zone’s center; the record gives no point)
Winter Storm, Westmoreland
- When
- March 4, 10:00 PM EST to March 5, 4:00 AM EST
- Where
- Westmoreland forecast zone
- Reported by
- LAW ENFORCEMENT
What these are
- Winter Storm
- A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Storm Surge and High Wind in California, March 4, 2001
- Heavy Snow in New York, March 4 to 6, 2001
- High Wind in California, March 4 to 5, 2001
- Heavy Snow in Pennsylvania, March 4 to 7, 2001
- Flooding in Texas, March 4 to 12, 2001
- Flood in Louisiana, March 4 to 26, 2001
- Tornado in Florida, March 4, 2001
- Flooding in Louisiana, March 4 to 12, 2001
- Tornado in Florida, March 4, 2001
- Damaging Wind in Florida, March 4, 2001
- Damaging Wind in Florida, March 4, 2001
- Damaging Wind in Florida, March 4, 2001
More
Every storm in Pennsylvania in 2001Every state in 2001This day in weather historyWarnings in Pennsylvania, March 2001
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: 5236179, 5236180, 5236181, 5236182, 5236183, 5236184, 5236185, 5236186.