National Weather Service United States Department of Commerce

Remnants of Hurricanes and Tropical Storms that have brought Rainfall to the Region.

This is a summary of recorded hurricanes or tropical storms which have brought rainfall to Western Pennsylvania since 1876. The remnants of 60 recorded storms have hit the area. 15 of these storms produced record 24 hour rainfall for Pittsburgh. Prior to 1950, hurricanes and tropical storms were not given names only numbers.

 

Remnants which produced 24 hour record rainfall for Pittsburgh

 

RANK - where the precipitation from the storm ranks in the list of the "greatest daily precipitation on record" for Pittsburgh.

CAT - the category the storms had at landfall on the Saffir-Simpson Scale.

 

DATE DAY(S) NAME CAT PRECIP RANK
1878 Sep 11-13 Hurricane #5 1 3.24(24hr)
4.48(total)
6th
1885 Oct 12-14 TS #8 TS 1.22 (24 hr)
2.21 (total)
 
1888 Aug 21-22 Hurricane #3 2 3.57 (24 hr)
3.65 (total)
4th
1899 Oct 31-Nov 1 Hurricane #6 2 1.22 (24 hr)
1.68 (total)
 
1915 Oct 1 Hurricane #5 4 1.50
 
 
1929 Oct 2-4 Hurricane #2 4 3.22 (24 hr)
3.37 (total)
 
1945 Sep 13-14 Hurricane #9 4 1.28 (24 hr)
1.77 (total)
 
1954 Oct 15-17 Hazel 4 3.56 (24 hr)
3.75 (total)
5th
1959 Sep 30-Oct 1 Gracie 4 1.18 (24 hr)
1.21 (total)
 
1996 Sep 6-7 Fran 3 1.52 (24 hr)
1.69 (total)
 
2004 Sep 8-9 Frances 2 3.60 (24 hr)
3.83 (total)
3rd
2004 Sep 17 Ivan 4 5.95
 
1st
2012 Oct 29-Nov 2 Sandy 3 1.72 (24 hr)
3.23 (total) Trace (snow)
 
2018 Sep 7-10 TS Gordon TS 3.73 (24 hr)
5.64 (total)
 

 

 

 

Remnants which provided rainfall for Western Pennsylvania but did not break daily precipitation records.

 

 

 

PRECIP - total for the storm / CAT - the category the storms had at landfall on the Saffir-Simpson Scale.

 

Precipitation records were not available for some of the storms from the late 1800's and early 1900's.

 

DATE DAY(S) NAME CAT PRECIP
1876 Sep 16-18 Hurricane #2 1 4.69
1883 Sep 13-14 Hurricane #3 3 0.38
1892 Sep 13-14 TS #4 TS 0.35
1893 Aug 28-29 Hurricane #6 3 2.23
1893 Oct 13-15 Hurricane #9 3 1.39
1893 Oct 23 TS #11 TS 0.01
1896 Jul 9 Hurricane #1 2 0.54
1896 Sep 29-30 Hurricane #4 3 1.79
1901 Sep 28-29 TS #8 TS 0.65
1903 Sep 16-17 Hurricane #4 2 0.05
1915 Jul 1-3 TS #1 TS 1.06
1923 Oct 23-24 TS #4 TS 0.65
1928 Aug 17-18 Hurricane #2 1 0.27
1928 Sep 19-20 Hurricane #4 5 0.88
1933 Aug 23-24 Hurricane #8 3 0.19
1934 Jun 18 Hurricane #2 1 1.56
1939 Aug 17-20 Hurricane #2 1 0.33
1949 Aug 28-29 Hurricane #2 4 0.56
1952 Sep 1-2 Able 2 0.10
1955 Aug 13-14 Connie 4 1.93
1957 Jun 28-30 Audrey 4 1.30
1965 Sep 11-13 Betsy 4 1.82
1968 Jun 24-27 TS Candy TS 1.52
1972 Jun 20-25 Agnes 1 2.60
1979 Jul 9-10 Bob 1 0.39
1979 Jul 28-29 TS Claudette TS 0.77
1979 Sep 5-6 David 5 0.10
1979 Sep 13-14 Frederic 4 0.53
1988 Aug 28-29 TS Chris TS 0.74
1989 Sep 22-23 Hugo 5 1.49 (t) snow
1992 Sep 25-27 TS Danielle TS 0.29
1994 Aug 17-18 TS Beryl TS 0.34
1995 Aug 4-5 Erin 1 1.14
1995 Oct 3-6 Opal 4 1.42
1999 Sep 7 Dennis 2 0.33
2000 Sep 20-21 Gordon 1 0.39
2002 Sep 26-27 Isidore 3 2.29
2003 Sep 18-19 Isabel 2 1.24
2004 Sep 28 Jeanne 3 0.28
2005 Aug 29-31 Katrina 4 1.93
2005 Oct 07-08 TS Tammy TS 0.74
2006 Sep 01-02 TS Ernesto TS 0.57
2007 Jun 3-5 TS Barry TS 0.65
2008 Aug 27-29 TS Fay TS 0.92
2017 Oct 8-9 Nate 1 0.97
2018 Sep 17-18 Florence 2 0.91
2020 May 25-28 TS Bertha TS 0.35
2020 Oct 29-30 Zeta 3 1.34
2021 Aug 18 TD Fred TS 1.67
2021 Sep 1 Ida 4 2.31

 

 

 

Some interesting facts found in these lists:

 

-Only 6 hurricanes, which reached category 5, have affected Western Pennsylvania. (1928-Hurricane #4,1979-David,1989-Hugo,2004-Ivan,2004-Jeanne,2005 - Katrina)

-12 category 4 hurricanes have affected the region (the most on the list)

-Hurricane Hugo was partially responsible for the earliest snowfall ever recorded. 1989 Sep 23 trace of snow.

-1893 saw the remnants of 3 storms hit the area, 2 within a week.

-1979 saw the remnants of 4 storms hit the area, 2 in less than a weeks time.

-2004 saw the remnants of 2 storms, Francis and Ivan, hit the area in 9 days causing widespread flooding

-2018 saw the remnants of 2 storms, TS Gordon and Florence hit the area in 6 days, Gordon provided record rainfall and flooding

-Western Pennsylvania, on average, experiences rainfall from the remnants of a hurricane or tropical storm twice every 5 years.