Pennsylvania, 2012

Tornado and Hail in Pennsylvania, July 26, 2012

July 26, 2012 · NWS CTP · 53 events in 22 counties and zones

Low pressure tracked east-northeast from the Lower Great Lakes region into the Northeast states, while a cold front trailed southwestward from the surface low through the Ohio Valley and Southern Plains states. Hot and humid conditions ahead of the cold front allowed for strong instability, which allowed for vigorous thunderstorm development by the mid-afternoon.

Where it happened

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

Open the live radar over this ground

The toll

Deaths
2
Injuries
5
Property damage
$250,000
Crop damage
None recorded
Events
53

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.

Low pressure tracked east-northeast from the Lower Great Lakes region into the Northeast states, while a cold front trailed southwestward from the surface low through the Ohio Valley and Southern Plains states. Hot and humid conditions ahead of the cold front allowed for strong instability, which allowed for vigorous thunderstorm development by the mid-afternoon. A belt of strong winds aloft on the southern edge of a potent mid-upper level trough over the Upper Great Lakes extended from the Ohio Valley into Pennsylvania. These winds helped to organize storms into lines and bowing segments. In addition, a tornado threat existed over northern Pennsylvania in an area of strong low-level shear in the vicinity of a retreating, diffuse warm front.

Widespread damaging winds accompanied an intense line of severe thunderstorms that moved from the northwest mountains into the lower Susquehanna Valley from the mid-afternoon into the late evening hours. An EF0 tornado was confirmed near Coudersport at 1515 EDT. Two areas of concentrated straight-line wind damage were also surveyed in McKean and Potter Counties, with estimated maximum winds between 70 and 90 mph. A 66-year-old woman was killed by a falling tree near Genesee in northern Potter County.

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 Jul 26, 12:20 PM EST, 40 minutes earlier.

Area forecast discussion, Jul 26, 12:20 PM EST, 40 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
120 PM EDT THU JUL 26 2012

.SYNOPSIS...
HOT AND HUMID CONDITIONS WILL RETURN TO CENTRAL PENNSYLVANIA AS A
WARM FRONT SURGES JUST TO THE NORTHEAST OF THE COMMONWEALTH THIS
AFTERNOON. A SLOW MOVING COLD FRONT APPROACHING THE LOWER GREAT
LAKES WILL COMBINE WITH HIGH INSTABILITY...RICH LEVEL MOISTURE...
AND MODERATELY STRONG MID-LEVEL WINDS TO PROMOTE THE DEVELOPMENT OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WIDESPREAD DAMAGING WINDS
TODAY INTO TONIGHT.

&&

.NEAR TERM /THROUGH TONIGHT/...

SEVERE THUNDERSTORM WATCH 524 HAS BEEN ISSUED UNTIL 8PM.

LINE OF STORMS BEGINNING TO FIRE FROM NW PA DOWN INTO OHIO. STORMS
WILL CONTINUE TO RACE EAST INTO HIGH CAPE/HIGH SHEAR ENVIRONMENT.

STRONGEST...WSWRLY 0-1KM SHEAR OF 20-25 KTS BECOMES FOCUSED
ACROSS THE NW MTNS BETWEEN 19-22Z...AND THEN JUMPS TO OUR EASTERN
ZONES EARLY THIS EVENING. IT/S THESE AREAS THAT WILL LIKELY SEE
BOUNDARY INTERACTIONS /WITH EITHER PREVIOUS CONVECTION OR THE
LEADING EDGE OF THE LAKE ERIE BREEZE/...AND SUPPORT DEVELOPMENT OF
THE MORE INTENSE...POSSIBLY ROTATING/DISCRETE SUPERCELLS.

PREVIOUS FCST DISCUSSION FOLLOWS WITH SOME MINOR EDITS...

CORRIDOR OF MODERATE TO STRONG WSWLY DEEP LAYER FLOW WILL PERSIST
WITHIN BASE OF AMPLIFYING UPPER TROUGH ROTATING THROUGH THE GRT
LKS REGION...WITH 40-50 KT H5 WINDS FROM THE UPPER OH VALLEY INTO
THE PA AND ADJACENT NE STATES. THE SWLY LLJ WILL CONTRIBUTE TO
NEWD DESTABILIZATION AS RICH BOUNDARY LAYER MOISTURE /UPPER 60S TO
LOW 70S DEWPOINTS/ ADVECTS NEWD IN WAKE OF ADVANCING WARM FRONT.

THE RISK OF WIDESPREAD DMGG WINDS WILL INCREASE DURING THE MID TO
LATE AFTERNOON /NORTH AND WEST/ AND THROUGH THIS EVENING ACROSS THE
EAST...IN ASSOCIATION WITH A COLD FRONT APPROACHING THE AREA FROM
THE LWR GRT LKS. STRONG HEATING WILL STEEPEN LAPSE RATES AND THE
CONVECTIVE ENVIRONMENT...CHARACTERIZED BY HIGH INSTABILITY AND
MODERATELY STRONG MID-LEVEL WINDS/SUFFICIENT BULK SHEAR WILL QUICKLY
BECOME FAVORABLE FOR EXPLOSIVE TSTM DEVELOPMENT WITH STORMS LKLY
BCMG ORGANIZED INTO LINES/CLUSTERS.  A FEW STORMS MAY ALSO DEVELOP
SUPERCELL STRUCTURES WITH POTENTIAL FOR LARGE HAIL AND PERHAPS A
TORNADO OR TWO...ESPECIALLY OVER THE NERN CWA INTO THE POCONOS WHERE
STRONGER EFFECTIVE SHEAR WILL EXIST NEAR AND JUST S OF THE WARM
FRONT. CONVECTION SHOULD CONTINUE AFTER DARK BEFORE GRADUALLY
WEAKENING OVERNIGHT.

ANOMALOUSLY HIGH 850 MB TEMPS OF 20-22C WILL COMBINE WITH A GUSTY
WSW DOWNSLOPE WIND TO PUSH TEMPS TO NEAR RECORD HIGHS WITH HEAT
INDEX VALUES TO BETWEEN 100-104F IN THE SOUTHERN VALLEYS AND
THROUGHOUT MUCH OF THE LOWER TO MID SUSQ VALLEY. RECORDS ARE
100F IN MDT AND 98F IN KIPT. A HEAT ADVISORY REMAINS IN EFFECT
FROM 16-00Z FRIDAY FOR NEARLY ALL OF THE SERN CWA.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
UPPER TROF AXIS/BROAD CYCLONIC FLOW REGIME IS EXPECTED TO SHIFT
EWD ACRS THE OH VLY INTO THE CENTRAL APPALACHIANS ON FRIDAY.
DESPITE WEAKER INSTABILITY/LOWER DEWPOINTS...THERE IS A RELATIVELY
LOW THREAT FOR SCT STG TO PERHAPS SVR STORMS TO DEVELOP IN ADVANCE
OF THE MID- UPPER TROF. MODEST DEEP LYR SHEAR SUGGESTS SOME
LOOSELY ORGANIZED CLUSTERS MAY FORM...MAINLY OVR THE SRN 2/3RDS OF
THE AREA WHERE SPC HAS DRAWN IN A D3 CATEGORICAL SEE TEXT.
CONVECTIVE ACTIVITY SHOULD BE MAINLY DIURNAL IN NATURE...AND
DECREASE IN CVRG WITH THE LOSS OF HEATING.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
THE PERIOD FROM SUN-WED WILL FEATURE A NEARLY STAGNANT LG SCALE
PATTERN OVR THE LOWER 48...WITH TROUGHING OVER THE ERN U.S.
EXTENDING SWD FM HUDSON BAY UPPER LOW. THE MODELS AND ENSEMBLES
SHOW GOOD AGREEMENT ON THIS SYNOPTIC PATTERN. TEMPS SHOULD AVG
NEAR NORMAL INTO THE MIDDLE OF NEXT WEEK.

&&

.AVIATION /17Z THURSDAY THROUGH MONDAY/...
AS WARM FRONT PUSHES NORTH OF THE AREA BY 15Z...EXPECT SHRA/TSRA
TO PUSH EAST OF THE AREA...FOLLOWED BY AN INCREASINGLY GUSTY SW SFC
WIND AND DIMINISHING LLWS AS CLEARING GRADUALLY DEVELOPS EAST ACROSS
THE CENTRAL PART OF PENN AND THE SUSQ VALLEY. BUFKIT SOUNDINGS
SUPPORT FREQUENT GUSTS LATER TODAY BTWN 20-25KTS.

BIG CONCERN THIS AFTN AND EVENING WILL BE THE POSSIBILITY OF
STRONG THUNDERSTORMS DEVELOPING AHEAD OF COLD FRONT PUSHING SE
ACROSS THE GRT LKS. ALTHOUGH VFR CONDS SHOULD PREDOMINATE OVER
THE AREA THIS AFTN...THERE IS A GOOD CHC FOR A BRIEF VIS/CIG
REDUCTION ACCOMPANYING A GUSTY TSRA. MOST LIKELY TIME FRAME FOR
TSRA WILL BE 18Z-00Z AT BFD AND BTWN 20Z-02Z AT IPT/UNV/AOO/JST.
MDT AND LNS COULD EXPERIENCE AN EVENING TSRA...ALTHOUGH CHANCES
NOT AS GREAT THERE.

OUTLOOK...
FRI...AM LOW CIGS POSSIBLE W MTNS. ISOLD PM TSRA IMPACTS POSSIBLE.
SAT...AM FOG POSSIBLE. ISOLD PM TSRA IMPACTS POSSIBLE.
SUN...AM FOG POSSIBLE.
MON...ISOLD PM TSRA IMPACTS POSSIBLE.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR PAZ026>028-
034>036-049>052-056-057-059-063>066.

&&

SYNOPSIS...STEINBUGL
NEAR TERM...LA CORTE/LAMBERT/STEINBUGL
SHORT TERM...STEINBUGL
LONG TERM...STEINBUGL
AVIATION...FITZGERALD
Hazardous weather outlook, Jul 26, 12:31 PM EST, 29 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
131 PM EDT THU JUL 26 2012

PAZ004>006-010>012-017>019-024-025-033-037-041-042-045-046-053-058-
271745-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-SOMERSET-TIOGA-
NORTHERN LYCOMING-SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-
COLUMBIA-SCHUYLKILL-
131 PM EDT THU JUL 26 2012

...SEVERE THUNDERSTORM WATCH 524 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A FEW STRONG TO LOCALLY SEVERE STORMS ARE POSSIBLE ON FRIDAY
AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ026>028-034>036-049>052-056-057-059-063>066-271745-
HUNTINGDON-MIFFLIN-JUNIATA-BEDFORD-FULTON-FRANKLIN-UNION-SNYDER-
MONTOUR-NORTHUMBERLAND-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-
LANCASTER-
131 PM EDT THU JUL 26 2012

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SEVERE THUNDERSTORM WATCH 524 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   HEAT ADVISORY.
   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A FEW STRONG TO LOCALLY SEVERE STORMS ARE POSSIBLE ON FRIDAY
AFTERNOON ESPECIALLY OVER SOUTH-CENTRAL PENNSYLVANIA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 26, 7:41 AM EST, 5 hours 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
841 AM EDT THU JUL 26 2012

PAZ036-056>059-063>066-261345-
ADAMS PA-CUMBERLAND PA-DAUPHIN PA-FRANKLIN PA-LANCASTER PA-LEBANON
PA-PERRY PA-SCHUYLKILL PA-YORK PA-
841 AM EDT THU JUL 26 2012

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT ADAMS...CUMBERLAND...
DAUPHIN...EAST CENTRAL FRANKLIN...LEBANON...NORTHWESTERN LANCASTER...
NORTHWESTERN YORK...SOUTHEASTERN PERRY AND SOUTHWESTERN SCHUYLKILL
COUNTIES THROUGH 945 AM EDT...

AT 832 AM EDT...SEVERAL STRONG THUNDERSTORMS WERE LOCATED ALONG A
LINE FROM WILLIAMSTOWN TO BLOSERVILLE TO MARION...MOVING TO THE
EAST SOUTHEAST AT 25 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
ALSO EXPECT OCCASIONAL...DANGEROUS CLOUD TO GROUND LIGHTNING FROM
THESE STORMS. DO NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES
WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM
APPROACHES. THESE STORMS WILL AFFECT ROCKVILLE...PENN NATIONAL
RACEWAY...LINGLESTOWN...AND LICKDALE...PINE
GROVE...CASHTOWN...BENDERSVILLE...AND ARENDTSVILLE...YORK SPRINGS
AND SEVEN STARS.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 207 AND 268...I-78 BETWEEN
MILE MARKERS 0 AND 8...I-81 BETWEEN MILE MARKERS 10 AND 105...I-83
BETWEEN MILE MARKERS 24 AND 50...I-283.

LAT...LON 3985 7770 4002 7772 4032 7734 4039 7720
      4065 7659 4053 7619 4049 7643 4034 7619
      4009 7667 3974 7709

FORECASTER: LAMBERT
Special weather statement, Jul 26, 12:11 PM EST, 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
111 PM EDT THU JUL 26 2012

PAZ004-005-261815-
MCKEAN PA-WARREN PA-
111 PM EDT THU JUL 26 2012

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN MCKEAN AND
WARREN COUNTIES BETWEEN 130 PM AND 215 PM EDT...

AT 1255 PM EDT...THE LEADING EDGE OF A LINE OF STRONG THUNDERSTORMS
WAS LOCATED ALONG INTERSTATE 90 IN ERIE COUNTY...MOVING RAPIDLY TO
THE EAST AT 55 MPH.

WIND GUSTS TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS. EXPECT INTENSE LIGHTNING FROM THESE STORMS. DO NOT STAY IN
THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES. THESE STORMS WILL AFFECT
COLUMBUS...SUGAR GROVE...YOUNGSVILLE...WARREN...KINZUA DAM AND
BRADFORD.

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 62...
ROUTE 219...STATE ROAD 59.

LAT...LON 4200 7851 4162 7909 4162 7952 4163 7962
      4200 7961

FORECASTER: LAMBERT

The radar

The Buffalo radar (KBUF), 119 km away, was scanning. The volume nearest the first event began at 17:59 UTC.

Open the radar archive at this moment

Event by event

51 thunderstorm wind, 1 tornado, 1 hail. Local standard time, as filed.

Thunderstorm Wind, Warren

When
July 26, 1:00 PM EST
Where
Warren County, 0.51 mi E of Sugar Grove
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
41.980, -79.340

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Sugar Grove.

Thunderstorm Wind, McKean

When
July 26, 1:40 PM EST to 1:50 PM EST
Where
McKean County, 0.24 mi ENE of Lewis Run to 0.47 mi E of Lewis Run
Measured
78 kt (90 mph) estimated gust
Property damage
$15,000
Reported by
NWS Storm Survey
Coordinates
41.871, -78.665

An official NWS storm survey found widespread straight-line wind damage near Lewis Run. A broad swath of wind damage (approximately 10 miles wide) brought down dozens of trees in the area. Within the relatively wide swath of downed trees, an embedded microburst was confirmed along US 219. The microburst was approximately 200 yards long with estimated maximum winds between 70 and 90 mph. Five houses and two outbuildings sustained moderate structural damage due to fallen trees.

Thunderstorm Wind, McKean

When
July 26, 1:56 PM EST
Where
McKean County, 0.86 mi SE of Smethport
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
41.810, -78.440

Thunderstorm winds estimated near 60 mph knocked down trees in Smethport.

Thunderstorm Wind, Potter

When
July 26, 2:08 PM EST
Where
Potter County, 0.86 mi SW of Roulette
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Public
Coordinates
41.770, -78.160

Thunderstorm winds estimated near 60 mph knocked down large trees in Roulette.

Thunderstorm Wind, Potter

When
July 26, 2:10 PM EST to 2:15 PM EST
Where
Potter County, 1.04 mi E of Kinney to 0.28 mi S of Hickox
Measured
78 kt (90 mph) estimated gust
Deaths
1 direct, 0 indirect
Injuries
1 direct, 0 indirect
Property damage
$10,000
Reported by
NWS Storm Survey
Coordinates
41.980, -77.910

An official NWS storm survey found widespread straight-line wind damage near Genesee. The survey team identified two areas of more concentrated wind damage which were classified as embedded microbursts. The overall area of wind damage covered an area approximately 1 mile wide and 3 miles Long from Kinney Road eastward through Hickox to Grover Hollow Road. The first area of concentrated damage, consisting of dozens of downed trees, occurred along Kinney Road about 1 mile east of the intersection with Corcoran road. The second concentrated area of microburst damage occurred along Hickox and Grover Hollow Roads. At this location, seven homes sustained minor structural damage. The maximum estimated wind speeds associated with the microburst damage was 90 mph.

An 66-year-old Andover, NY, woman was killed while trying to evacuate her family from a campsite located along Wintergreen Road in Hickox. Officials said the woman was fastening her Great Grand-daughter into a safety-seat in her vehicle after receiving a text message alerting her of a tornado warning. The woman and her two Grandchildren, ages 19 and 20, were planning on evacuating the campsite, but she was struck by a falling tree in the process. Authorities said the tree struck the Grandmother in the head, killing her instantly. She was pronounced dead at the scene by Potter County Coroner. Witnesses said the tree was struck by lightning before falling. One of her Grand-daughters was also struck and injured by the falling tree while attempting to help her Grandmother. She survived but suffered injuries to her leg and arm and was transported to the hospital.

Thunderstorm Wind, Elk

When
July 26, 2:15 PM EST
Where
Elk County, 1.04 mi E of Ridgway
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
41.430, -78.730

Thunderstorm winds estimated near 60 mph knocked down numerous trees and utility wires around Ridgway.

Tornado, Potter

When
July 26, 2:15 PM EST to 2:16 PM EST
Where
Potter County, 1.66 mi NNE of Coudersport to 1.73 mi NNE of Coudersport
Rating
EF0
Path length
0.16 mi
Path width
150 yd
Reported by
NWS Storm Survey
Coordinates
41.791, -78.005

An official NWS storm survey confirmed an EF0 tornado near Coudersport around 1515 EDT. The weak EF0 tornado briefly touched down just northeast of Coudersport and was embedded within a larger swath of straight-line wind damage associated with a bowing line of severe thunderstorms. The convergent damage swath was on a hillside in a heavily wooded area just off of Reese Hollow Road. The short, narrow path of the EF0 tornado was approximately 150 yards wide and less than a quarter mile long. Damage was confined to the forested area with dozens of downed trees, but no damage to houses or structures.

Thunderstorm Wind, Elk

When
July 26, 2:20 PM EST
Where
Elk County, 0.69 mi N of Johnsonburg
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
41.490, -78.680

Thunderstorm winds estimated near 60 mph knocked down numerous trees and utility wires around Johnsonburg.

Thunderstorm Wind, Elk

When
July 26, 2:25 PM EST
Where
Elk County, 0.52 mi W of Kaulmont
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
41.430, -78.560

Thunderstorm winds estimated near 60 mph knocked down numerous trees and utility wires around St. Mary's.

Thunderstorm Wind, Potter

When
July 26, 2:30 PM EST
Where
Potter County, 0.99 mi NE of Austin
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
COOP Observer
Coordinates
41.641, -78.087

Thunderstorm winds estimated near 60 mph knocked down trees along SR 872 near Austin.

Thunderstorm Wind, Potter

When
July 26, 2:30 PM EST
Where
Potter County, 1.24 mi SW of Harrison Vly
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
41.920, -77.670

Thunderstorm winds estimated near 60 mph knocked down trees in Harrison Valley.

Thunderstorm Wind, Cameron

When
July 26, 2:37 PM EST
Where
Cameron County, 0.86 mi NE of Emporium
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
41.510, -78.240

Thunderstorm winds estimated near 60 mph knocked down several large trees in Emporium.

Thunderstorm Wind, Tioga

When
July 26, 2:50 PM EST
Where
Tioga County, 0.51 mi W of Lawrenceville
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
COOP Observer
Coordinates
42.000, -77.130

Thunderstorm winds estimated near 60 mph knocked down trees in Lawrenceville.

Thunderstorm Wind, Tioga

When
July 26, 2:55 PM EST
Where
Tioga County, 0.51 mi W of Tioga
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Public
Coordinates
41.900, -77.140

Thunderstorm winds estimated near 60 mph knocked down several trees around Tioga Lake.

Thunderstorm Wind, Tioga

When
July 26, 3:00 PM EST
Where
Tioga County, 1.48 mi NNE of Antrim
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Public
Coordinates
41.650, -77.270

Thunderstorm winds estimated near 60 mph knocked a few large trees down near Morris.

Thunderstorm Wind, Clearfield

When
July 26, 3:10 PM EST
Where
Clearfield County, 0.87 mi SE of Grampian
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Storm Chaser
Coordinates
40.960, -78.610

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Grampian.

Thunderstorm Wind, Clinton

When
July 26, 3:20 PM EST
Where
Clinton County, 0.69 mi S of Lockport
Measured
56 kt (64 mph) measured gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
41.140, -77.450

Thunderstorm winds estimated near 65 mph knocked down trees in and around Lock Haven.

Thunderstorm Wind, Lycoming

When
July 26, 3:25 PM EST
Where
Lycoming County, Jersey Shr
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Public
Coordinates
41.200, -77.270

Thunderstorm winds estimated near 60 mph knocked down trees in Jersey Shore.

Thunderstorm Wind, Lycoming

When
July 26, 3:26 PM EST
Where
Lycoming County, 0.06 mi N of Marsh Hill
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Public
Coordinates
41.481, -76.980

Thunderstorm winds estimated near 60 mph knocked down trees along SR 14 north of Trout Run.

Thunderstorm Wind, Lycoming

When
July 26, 3:35 PM EST
Where
Lycoming County, 0.52 mi E of Linden
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
Trained Spotter
Coordinates
41.230, -77.140

Thunderstorm winds estimated near 60 mph knocked down large tree limbs near Linden just west of Williamsport.

Thunderstorm Wind, Cambria

When
July 26, 3:40 PM EST
Where
Cambria County, 0.69 mi S of Glasgow
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.710, -78.450

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Glasgow.

Thunderstorm Wind, Lycoming

When
July 26, 3:43 PM EST
Where
Lycoming County, 0.44 mi NNE of Newberry
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
41.236, -77.027

Thunderstorm winds estimated near 60 mph blew a roof from a building at Penn College.

Thunderstorm Wind, Union

When
July 26, 3:43 PM EST
Where
Union County, 1.25 mi WNW of White Deer
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
COOP Observer
Coordinates
41.090, -76.900

Thunderstorm winds estimated near 60 mph knocked down trees in the Allenwood area.

Thunderstorm Wind, Lycoming

When
July 26, 3:45 PM EST
Where
Lycoming County, 0.53 mi S of (Ipt)williamsport Ar
Measured
51 kt (59 mph) measured gust
Reported by
ASOS
Coordinates
41.242, -76.919

The ASOS at the Williamsport Regional Airport (KIPT) recorded a peak thunderstorm wind gusts of 59 mph.

Thunderstorm Wind, Sullivan

When
July 26, 3:45 PM EST
Where
Sullivan County, 2.37 mi S of Millview
Measured
50 kt (58 mph) estimated gust
Injuries
1 direct, 0 indirect
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
41.466, -76.580

Thunderstorm winds estimated near 60 mph knocked down trees along SR3009 and 154 near Worlds End State Park. Firefighters had to rescue a man who was injured and trapped when a tree fell onto his tent. The man was rescued and transported to a nearby hospital. His injuries were not life-threatening.

Thunderstorm Wind, Cambria

When
July 26, 3:48 PM EST
Where
Cambria County, Barnesboro
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.670, -78.780

Thunderstorm winds estimated near 60 mph knocked down trees in Northern Cambria.

Thunderstorm Wind, Lycoming

When
July 26, 3:55 PM EST
Where
Lycoming County, 1.37 mi W of Clarkstown
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
41.201, -76.756

Thunderstorm winds estimated near 60 mph ripped a door from a residential home on Main Street in Muncy. SR 442 was closed from downed trees and utility wires just east of Muncy between Fogelman and Clarkstown Roads.

Thunderstorm Wind, Centre

When
July 26, 3:55 PM EST
Where
Centre County, 0.87 mi SW of Gatesburg
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
NWS Employee
Coordinates
40.740, -78.010

Thunderstorm winds estimated near 60 mph knocked down large tree limbs and several small trees near Gatesburg.

Thunderstorm Wind, Centre

When
July 26, 3:55 PM EST
Where
Centre County, 0.68 mi ESE of Oak Hall
Measured
50 kt (58 mph) estimated gust
Injuries
3 direct, 0 indirect
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
40.795, -77.769

Thunderstorm winds estimated near 60 mph knocked down a few large trees in the State College area. A large tree fell on a house on Orlando Avenue causing significant structural damage. Another tree fell on a vehicle traveling on Linden Hall Road, with three people sustaining minor injuries.

Thunderstorm Wind, Centre

When
July 26, 4:02 PM EST
Where
Centre County, 1.38 mi SE of Pleasant Gap
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
NWS Employee
Coordinates
40.855, -77.713

Thunderstorm winds estimated near 60 mph knocked down trees along Greens Valley Road near Pleasant Gap.

Thunderstorm Wind, Mifflin

When
July 26, 4:15 PM EST
Where
Mifflin County, 0.69 mi SE of Burnham
Measured
50 kt (58 mph) estimated gust
Deaths
1 direct, 0 indirect
Reported by
Emergency Manager
Coordinates
40.624, -77.560

Thunderstorm winds estimated near 60 mph knocked down several large tree branches at the Derry Township Community Park in south Burnham along Derry Park Road and Logan Boulevard. A 16-year-old female was killed when a falling tree branch struck her in the head.

Hail, Columbia

When
July 26, 4:15 PM EST
Where
Columbia County, 1.25 mi WSW of Berwick
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
41.060, -76.250

Thunderstorm Wind, Columbia

When
July 26, 4:15 PM EST
Where
Columbia County, 1.25 mi WSW of Berwick
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
41.060, -76.250

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Berwick.

Thunderstorm Wind, Blair

When
July 26, 4:15 PM EST
Where
Blair County, 0.53 mi E of Holidaysburg
Measured
50 kt (58 mph) estimated gust
Reported by
Newspaper
Coordinates
40.430, -78.390

Thunderstorm winds estimated near 60 mph knocked down trees in Hollidaysburg. One tree fell on a house, but the extent of damage was unknown.

Thunderstorm Wind, Cambria

When
July 26, 4:16 PM EST
Where
Cambria County, 0.69 mi N of Ebensburg
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.490, -78.730

Thunderstorm winds estimated near 60 mph knocked down numerous trees in Ebensburg.

Thunderstorm Wind, Cambria

When
July 26, 4:37 PM EST
Where
Cambria County, 0.69 mi S of Brownstown
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
40.320, -78.950

Thunderstorm winds estimated near 60 mph knocked down large tree limbs in Westmont.

Thunderstorm Wind, Somerset

When
July 26, 4:50 PM EST
Where
Somerset County, 90.54 mi WNW of Trust
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
40.282, -79.050

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires along SR 271 (Menoher Hwy) in extreme northwest Somerset County. The downed wires closed the road.

Thunderstorm Wind, Dauphin

When
July 26, 5:00 PM EST
Where
Dauphin County, 1.26 mi WSW of Lykens
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.560, -76.700

Thunderstorm winds estimated near 60 mph knocked down numerous trees in and around Lykens.

Thunderstorm Wind, Somerset

When
July 26, 5:10 PM EST
Where
Somerset County, 1.38 mi S of Windber
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.230, -78.830

Thunderstorm winds estimated near 60 mph knocked down numerous trees in and around Windber.

Thunderstorm Wind, Bedford

When
July 26, 5:10 PM EST
Where
Bedford County, Woodbury
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.230, -78.370

Thunderstorm winds estimated near 60 mph knocked down numerous trees in and around Woodbury.

Thunderstorm Wind, Bedford

When
July 26, 5:15 PM EST
Where
Bedford County, 0.87 mi SE of New Paris
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.110, -78.640

Thunderstorm winds estimated near 60 mph knocked down trees in New Paris.

Thunderstorm Wind, Lebanon

When
July 26, 5:20 PM EST
Where
Lebanon County, 1.82 mi WNW of Fredericksburg
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
40.456, -76.464

Thunderstorm winds estimated near 60 mph knocked down trees northwest of Fredericksburg.

Thunderstorm Wind, Somerset

When
July 26, 5:20 PM EST
Where
Somerset County, 4.53 mi NNW of Barronvale
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.011, -79.312

Thunderstorm winds estimated near 60 mph knocked down several trees in Seven Springs.

Thunderstorm Wind, Lebanon

When
July 26, 5:25 PM EST
Where
Lebanon County, 2 mi SE of Fredericksburg
Measured
70 kt (81 mph) estimated gust
Property damage
$10,000
Reported by
Emergency Manager
Coordinates
40.429, -76.403

Thunderstorm winds estimated near 80 mph removed a portion of a gas station roof and caused a partial collapse of a cinder-block wall. The enhanced straight-line wind damage was likely the result of a microburst. Eye-witness reports indicate some swirling with the wind, and some damage being picked up and lifted in a rotating pattern near the edge of the microburst. It is therefore concluded that a brief gustnado spin up occurred in association with the microburst.

Thunderstorm Wind, Somerset

When
July 26, 5:27 PM EST
Where
Somerset County, 0.9 mi SE of Confluence
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
39.811, -79.358

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Confluence.

Thunderstorm Wind, York

When
July 26, 5:29 PM EST
Where
York County, 2.76 mi S of New Market
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.180, -76.870

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Fairview Township.

Thunderstorm Wind, Lancaster

When
July 26, 5:48 PM EST
Where
Lancaster County, 0.69 mi N of Bainbridge
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
40.090, -76.670

Thunderstorm winds estimated near 60 mph knocked down trees in Conoy Township near Bainbridge.

Thunderstorm Wind, Lancaster

When
July 26, 5:49 PM EST
Where
Lancaster County, 1.39 mi ENE of Durlach
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Emergency Manager
Coordinates
40.240, -76.207

Thunderstorm winds estimated near 60 mph knocked down trees in West Cocalico and Clay Townships.

Thunderstorm Wind, Lancaster

When
July 26, 5:50 PM EST
Where
Lancaster County, 0.53 mi E of Clay
Measured
50 kt (58 mph) estimated gust
Reported by
State Official
Coordinates
40.220, -76.240

Delete.

Thunderstorm Wind, Lancaster

When
July 26, 6:15 PM EST
Where
Lancaster County, Millersville
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
40.000, -76.350

Thunderstorm winds estimated near 60 mph knocked down large tree limbs in Millersville.

Thunderstorm Wind, York

When
July 26, 6:15 PM EST
Where
York County, 1.48 mi NNW of Yorkshire
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
40.000, -76.680

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Springettsbury Township.

Thunderstorm Wind, Lancaster

When
July 26, 6:30 PM EST
Where
Lancaster County, 0.53 mi E of Strasburg
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
State Official
Coordinates
39.980, -76.190

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Strasburg Township.

Thunderstorm Wind, York

When
July 26, 7:00 PM EST
Where
York County, 0.69 mi S of Glen Rock
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Trained Spotter
Coordinates
39.790, -76.730

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Glen Rock.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Thunderstorm Wind, Potter2012-07-2666FemaleCampingDirect
Thunderstorm Wind, Mifflin2012-07-2616FemaleOutside/Open AreasDirect

What these are

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.
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.

The same day elsewhere

More

Every storm in Pennsylvania in 2012Every state in 2012This day in weather historyThe tornado archive for Pennsylvania, 2012Warnings in Pennsylvania, July 2012

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: 386687, 386728, 386688, 386689, 386768, 386691, 386804, 386692, 386693, 386690, 386698, 386695, 386697, 386700, 386701, 386702, 386769, 386774, 386772, 386773, 386775, 386783, 386786, 386785, 386787, 386784, 386782, 386792, 386793, 386796, 386789, 386798, 386800, 386930, 386928, 386929, 386931, 386932, 386933, 386936, and more.