A powerful storm system and associated cold front produced severe thunderstorms, high winds and a tornado across Western Pennsylvania, Southeast Ohio, Northern West Virgina, and Garrett county Maryland.
Every event with a place to put it; 12 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 episode as NWS PBZ wrote it up.
A powerful storm system and associated cold front produced severe thunderstorms, high winds and a tornado across Western Pennsylvania, Southeast Ohio, Northern West Virgina, and Garrett county Maryland.
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 Dec 1, 10:28 AM EST, 32 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PITTSBURGH PA
1028 AM EST FRI DEC 1 2006
.SHORT TERM (REST OF TODAY)...
DID UPDATE TO INCLUDE THE NEW SEVERE THUNDERSTORM WATCH NUMBER 874.
&&
.PREVIOUS DISCUSSION...
(ISSUED 700 AM EST FRI DEC 1 2006)
SHORT TERM (REST OF TODAY)...
UPDATE ISSUED TO BRING HIGH WIND WARNING FURTHER FORWARD WITH
ADVANCE OF CONVECTIVE LINE.
PREVIOUS DISCUSSION...
(ISSUED 325 AM EST FRI DEC 1 2006)
SHORT TERM (TODAY AND TONIGHT)...
ONLY COSMETIC REFINEMENTS NEEDED TO PROG OF WIND AND RAIN FOR TDA.
THESE INCLUDED ADJUSTMENTS IN TIMING TO INCLUDE THE MRNG HOURS OF
THE HIGH WIND WARNING FOR THE WRN/SRN AND RIDGE ZONES. THIS IN
RESPONSE TO POTENTIAL FOR MIXING OF LLVL JET CORE WITH SHRA/TSRA
THAT DVLP ALNG WITH TERRAIN FAVORABILITY IN ADDITION TO PRESSURE
SURGE ON LEADING EDGE OF SFC FRONT. STRNG SBSDNC STILL IND IN THE
WAKE OF THE SYS...HENCE WARNING WL BE MAINTAINED INTO THE EVE.
OTHER CONCERNS WL SVR POTENTIAL WITH THE ADVN OF THIS SYS. AREA WL
BE UNDER SLGT RISK...PRIMARILY FOR WND, HOWEVER THE TORNADO CANNOT
BE RULED.
DAY SHIFT WL ALSO HAVE TO TAKE A LOOK AT FZDZ POTENTIAL LATE TNGT
WITH MOIST BNDRY LYR AND DRY SLOT DRIVING ICE FM THE MID LVLS.
SHSN...WITH INSIG ACCUM WERE LTD TO THE LE AND RIDGE ZONES DUE TO STRNG
SBSDNC.
LONG TERM (SATURDAY THROUGH THURSDAY)...
ONLY CHANGES WERE TO REFINE SHSN AREAS IN THE WAKE OF TDAS
SYS...SBSDNC AND UNFAVORABLE WND DIRECTION SHOULD CONFINE SHSN TO
THE LAKE EFFECT AND RIDGE ZONES. NO CHANGES TO SMALL POPS AREA-WIDE
WITH SUN/SUN NGT CDFNT.
AVIATION...
MAINLY VFR CONDITIONS ATTM WITH THE EXCEPTIONS OF LOW CONDITIONS AT
FKL. FIRST BATCH OF STEADY RAIN APPROACHING ZZV WITH CONDITIONS
EXPECTED TO LOWER TO MVFR NEXT COUPLE OF HOURS HOLDING OFF FURHER
EAST UNTIL DAWN. FROPA 14Z ZZV 16Z PIT-AGC-FKL 18Z DUJ-MGW. LLWS
MENTIONED UNTIL WINDS MIX DOWN AHEAD OF AND ACCOMPANYING FRONT.
BUFKIT SHOWS MIXING DOWN MOMENTUM CAN BRING WIND AROUND 50 KT THIS
MORNING IN THE WEST MOVING EAST TO PIT BY 16Z WITH FROPA. ANY
THUNDERSTORM CAN ALSO MIX DOWN 50-60KT JET BUT MORE ISOLATED
POSSIBILITY WITH THOSE. CROSS SECTIONS SHOW CIGS LIFTING TONIGHT BUT
DID NOT GO AS HIGH AS MAV VERSION WHICH BREAKS US OUT TO CAT 6.
WINDS SUBSIDING TO 15 TO 20KT AFT 06Z SAT. ONLY MENTIONED -SN IN THE
NORTHERN TERMINALS AFT 00Z AND AS A TEMPO FURTHER SOUTH LATE
TONIGHT.
&&
.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...HIGH WIND WARNING FOR MDZ001 UNTIL 9 PM FRIDAY.
OH...HIGH WIND WARNING FOR OHZ039>041-048>050-057>059-068-069 UNTIL
9 PM FRIDAY.
PA...HIGH WIND WARNING FOR PAZ007>009-013>016-020>023-029>032 UNTIL
9 PM FRIDAY.
WV...HIGH WIND WARNING FOR WVZ001>004-012-021>023-041 UNTIL 9 PM
FRIDAY.
&&HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 415 AM EST FRI DEC 1 2006 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029>032-WVZ001>004-012-021>023-041-020915- GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON- JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER- VENANGO-FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER- ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-GREENE- FAYETTE-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA- PRESTON-TUCKER- 415 AM EST FRI DEC 1 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT A HIGH WIND WARNING IS IN EFFECT TODAY. WIND GUSTS TO 60 MPH ARE LIKELY WITH THE PASSAGE OF A STRONG LOW PRESSURE SYSTEM. IN ADDITION, THERE IS A SLIGHT RISK THAT THUNDERSTORMS ALONG AND IN ADVANCE OF THE SYSTEMS COLD FRONT COULD REACH SEVERE LEVELS. THE PRIMARY SEVERE THREAT WILL BE FROM DAMAGING WIND, BUT ISOLATED TORNADOES ARE POSSIBLE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. 15
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 726 AM EST FRI DEC 1 2006 OHZ039-048-057-058-068-011430- TUSCARAWAS-COSHOCTON-MUSKINGUM-GUERNSEY-NOBLE- INCLUDING THE CITIES OF...NEW PHILADELPHIA...DOVER... UHRICHSVILLE...COSHOCTON...ZANESVILLE...CAMBRIDGE...CALDWELL 726 AM EST FRI DEC 1 2006 ...WINDS CAN GUST OVER 50 MPH WITHIN THE NEXT HOUR... SHOWERS AND SCATTERED THUNDERSTORMS WILL AFFECT THE AREA AFTER 8:00 AM AND CAN BRING WIND GUSTS OVER 50 MPH AS THE LINE PASSES THROUGH. THESE WINDS CAN CAUSE DOWNED TREES AND POWERLINES. A HIGH WIND WARNING REMAINS IN EFFECT FOR THE AREA FOR THE REST OF THE DAY AND INTO THE EVENING WITH CONTINUED DAMAGING WINDS POSSIBLE.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 830 AM EST FRI DEC 1 2006 OHZ040-041-049-050-059-069-WVZ001>004-012-011430- BELMONT OH-BROOKE WV-CARROLL OH-COLUMBIANA OH-HANCOCK WV-HARRISON OH-JEFFERSON OH-MARSHALL WV-MONROE OH-OHIO WV-WETZEL WV- 830 AM EST FRI DEC 1 2006 ...WINDS CAN GUST OVER 50 MPH WITHIN THE NEXT HOUR... A LINE OF SHOWERS WILL AFFECT THE AREA AFTER 9:00 AM AND CAN BRING WIND GUSTS OVER 50 MPH AS THE LINE PASSES THROUGH. THESE WINDS CAN CAUSE DOWNED TREES AND POWERLINES. A HIGH WIND WARNING REMAINS IN EFFECT FOR THE AREA FOR THE REST OF THE DAY AND INTO THE EVENING WITH CONTINUED DAMAGING WINDS POSSIBLE.
SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE PITTSBURGH PA 1020 AM EST FRI DEC 1 2006 MDZ001-PAZ007>009-013>016-020>023-029>032-WVZ021>023-041-011715- ALLEGHENY PA-ARMSTRONG PA-BEAVER PA-BUTLER PA-CLARION PA-FAYETTE PA-FOREST PA-GARRETT MD-GREENE PA-INDIANA PA-JEFFERSON PA-LAWRENCE PA-MARION WV-MERCER PA-MONONGALIA WV-PRESTON WV-TUCKER WV-VENANGO PA-WASHINGTON PA-WESTMORELAND PA- 1020 AM EST FRI DEC 1 2006 ...SHOWERS AND ISOLATED THUNDERSTORMS MOVING RAPIDLY THROUGH WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA THIS MORNING... AT 1018 AM EST NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH INDICATED A BROAD BAND OF RAIN SHOWERS AND ISOLATED THUNDERSTORMS EXTENDING FROM EASTERN LAKE ERIE SOUTHWARD INTO EASTERN OHIO AND WESTERN SECTIONS OF WEST VIRGINIA. THESE SHOWERS AND ISOLATED THUNDERSTORMS ARE MOVING RAPIDLY TOWARD THE NORTHEAST AT 40 TO 50 MILES PER HOUR. AS THE HEAVIER BANDS OF RAIN APPROACH...THERE WILL BE AN INCREASED CHANCE FOR THESE SHOWERS AND ISOLATED THUNDERSTORMS TO BRING STRONG GUSTY WINDS TOWARD THE SURFACE. SOME OF THESE WINDS COULD BE AS HIGH AS 60 MILES PER HOUR AND COULD CAUSE DAMAGE. KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THREATENING WEATHER IS DETECTED. PLEASE REPORT STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL NOON EST FRIDAY FOR OHIO AND THE PANHANDLE OF PENNSYLVANIA AND WEST VIRGINIA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 600 PM EST WESTERN PENNSYLVANIA AND THE NORTHERN PANHANDLE OF WEST VIRGINIA.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1032 AM EST FRI DEC 01 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1010 AM NON-TSTM WND DMG FOLLANSBEE 40.34N 80.60W
12/01/2006 BROOKE WV EMERGENCY MNGR
TREES DOWN ON ELDERSVILLE ROAD NEAR FOLLANSBEE.
&&
TPARRISHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1050 AM EST FRI DEC 01 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 AM NON-TSTM WND DMG MOUNDSVILLE 39.92N 80.74W
12/01/2006 MARSHALL WV LAW ENFORCEMENT
LINES DOWN/POWER OUTAGE ALONG ROUTE 250 AND CHASE LANE.
&&
TPARRISHThe Pittsburgh radar (KPBZ), 20 km away, was scanning. The volume nearest the first event began at 16:04 UTC.
15 high wind, 10 thunderstorm wind, 1 tornado, 1 hail. Local standard time, as filed.
Emergency management reported trees down around Ambridge.
Emergency management reported trees and power lines down along Route 8 near Barkeyville.
A wind gust to 64 MPH was reported at the Franklin Airport.
An off duty NWS employee reported trees down along McKean RD.
Emergency management reported trees down in Buffalo Township.
Large branches were reported down in Mt Pleasant.
Numerous trees were reported down across county due to high winds.
Numerous trees were reported down in Shadyside.
Numerous large trees were reported down and a roof peeled off of a car wash.
A weak F1 tornado touched down in Greensburg at 11:40 AM about one quarter mile south of Greensburg Hospital. The tornado was only briefly on the ground for about 100 yards in Greensburg with F1 damage to trees, one house, and an automobile. The tornado then lifted and skipped across Westmoreland county producing F0 damage to trees and a few out buildings. The tornado generally followed Route 119 through Crabtree before finally lifting near New Alexandria.
The public reported trees down in Crabtree.
Emergency management reported trees down around Cranberry Twp.
The public reported a large pole building destroyed by high winds two miles east of Ringgold.
The public reported nickel size hail near Punxsutawney.
The public reported numerous large tree branches down in Belle Vernon.
Emergemcy management reported numerous trees and power poles down near Blairsville.
The public reported trees and power lines down in Greensburg.
Emergency management reported numerous trees and power lines down in and around Greensboro.
Emergency management reported numerous trees down around Greenville due to high winds.
Emergency management reported numerous large trees and utility poles down across the county due to high winds.
Emergency management reported trees down across the county due to high winds.
Law enforcement reported trees down across the county due to high winds.
A trained spotter reported trees down across the county due to high winds.
Emergency management reported trees down across the county due to high winds.
The public reported trees down across the county due to high winds.
The public reported trees down across the county due to high winds.
The public reported trees down across the county due to high winds.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2006Every state in 2006This day in weather historyThe tornado archive for Pennsylvania, 2006Warnings in Pennsylvania, December 2006
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: 8165, 8135, 8166, 8167, 8139, 8143, 8168, 8144, 8145, 8131, 8151, 8154, 8169, 8122, 8157, 8160, 8161, 8170, 8171, 8172, 8173, 8174, 8175, 8179, 8176, 8177, 8178.