Annual Pennsylvania rainfall, severe weather and climate data

Driest location ranked by lowest annual average precipitation: Wellsboro, northern Pennsylvania,33.18"

Wettest location ranked by highest annual average precipitation: Chalk Hill, southwestern Pennsylvania, 54.04"

Snowiest location ranked by highest annual average snowfall: Corry, northwestern Pennsylvania, 121.6"

State precipitation record for 24 hours - Smethport, northern Pennsylvania, 7/17/1942, 34.50"

State precipitation record for 1 year - Mount Pocono, eastern Pennsylvania, 1952, 81.64"

State snowfall record for 24 hours - Seven Springs, southwestern Pennsylvania, 3/13-14/1993, 40.0"

State snow record for 1 season - Blue Knob, south-central Pennsylvania, 1890-1891, 225.0"

On July 17, 1942 Smethport, Pennsylvania received 34.50 inches of rain in 24 hours, the 5th highest 
24-hour total in U.S. history

On July 24, 1947, the most powerful lightning strike ever recorded in the United States struck the 
Cathedral of Learning of the University of Pittsburgh. The bolt discharged approximately 345,000 amps
This was enough electricity to briefly light 600,000 60W light bulbs

February 2010 was one for the record books in Pittsburgh. The city broke it's daily snowfall record with 11.4 inches 
on February, 5. The city then established its snowiest month on record in February by beating the previous record
set in January 1978 by 11 inches with 51.5 inches. To finalize the season, the city established a new snowiest season
record with 78.7 inches, this beat the previous record in 1995-1996 by 13.2 inches

Pennsylvania temperature averages and extremes, Philadelphia climate records and averages, precipitation/temperature
data for all U.S. states and interesting Top 10 U.S. climate extremes

Data sources: National Climatic Data Center, Severe thunderstorm / tornado watch data period is 1999 - 2008, NOAA Storm Prediction Center, Tornado climate data - NOAA Storm Prediction Center, State lightning flash density average - 1997-2011, Vaisala

City	Avg Annual Precip	Avg Annual Snow	Avg # days of Precip	Avg # thunderstorm days	Avg # hail days	Avg # severe thunderstorm watches per year	Avg # tornado watches per year	# of tornadoes reported in county, 1960-2010
Allentown	45.17	32.9	125	31	1	1	10	8
Avoca	37.56	48.7	140	29	1	1	11	15
Erie	42.77	90.4	165	35	1	1	9	14
Harrisburg	41.45	34.3	125	31	1	1	11	10
Philadelphia	42.05	21.1	117	27	1	1	8	6
Pittsburgh	37.85	43.5	153	35	1	2	12	12
Williamsport	41.59	41.7	141	34	1	1	10	24
Pennsylvania Annual Precipitation Average - 43.02 inches, 21st wettest in the U.S. Pennsylvania Tornado Average - 10.2 per year - 24th most in the U.S. Largest reported Tornado in Pennsylvania from 1950-2011, 5/31/1985 - 3,300 yards / 1.8 miles wide Date with highest number of reported Tornadoes in Pennsylvania from 1950-2011, May 31st - 45 tornadoes Average time of occurrence of reported Tornadoes in Pennsylvania from 1950-2011 - 4:06 pm Pennsylvania Annual Lightning Density - 6.9 flashes per square mile - 25th highest in U.S. Record Driest year in Pennsylvania from 1895-2012 - 1930, avg precipitation 25.36 inches Record Wettest year in Pennsylvania from 1895-2012 - 2011, avg precipitation 59.80 inches