Post-Tropical Events

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 55 recorded storms have hit the area. 12 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
1876 Sep 17 Hurricane #2         1 3.38 5th
1878 Sep 12 Hurricane #5         1 3.24    6th
1888 Aug 21 Hurricane #3         2 3.57  3rd
1899 Oct 31 Hurricane #6         2 1.22  
1915 Oct 1 Hurricane #5         4 1.50  
1929 Oct 2 Hurricane #2         4 3.22  
1945 Sep 13-14 Hurricane #9         4 1.28(24hr) / 1.77(total)  
1954 Oct 15 Hazel         4 3.56     4th
1959 Sep 30-Oct 1 Gracie         4 1.18(24hr)/ 1.21(total)  
1996 Sep 6-7 Fran         3 1.52(24hr)/ 1.69(total)  
2004 Sep 8-9 Frances         2 3.60(24hr)/ 3.83(total)   2nd
2004 Sep 17 Ivan         4 5.95   1st

 

 

 

 

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
1883 Sep 13 Hurricane #3            3  
1885 Oct 13-14 TS #8    
1892 Sep 14 TS #4    
1893 Aug 29 Hurricane #6            3  
1893 Oct 14 Hurricane #9            3  
1893 Oct 23 TS #11    
1896 Jul 9 Hurricane #1            2  
1896 Sep 30 Hurricane #4            3  
1901 Sep 29 TS #8    
1903 Sep 16-17 Hurricane #4             2  
1915 Jul 1-2 TS #1   1.05
1923 Oct 23-24 TS #4   0.65
1928 Aug 17-18 Hurricane #2            1 0.27
1928 Sep 19-20 Hurricane #4            5 0.88
1933 Aug 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 0.54
1952 Sep 1-2 Able            2 0.10
1955 Aug 13 Connie            4 1.93
1957 Jun 28-30 Audrey            4 1.30
1965 Sep 11-13 Betsy            4 1.80
1968 Jun 24-27 TS Candy   1.52
1972 Jun 20-25 Agnes            1 2.60
1979 Jul 9-10 Bob            1 0.36
1979 Jul 28-29 TS Claudette   0.77
1979 Sep 5-6 David            5 0.13
1979 Sep 10-12 Frederic            4 1.86
1988 Aug 28-29 TS Chris   0.74
1989 Sep 22-23 Hugo            5 1.49 (t) snow
1992 Sep 25-27 TS Danielle   0.29
1994 Aug 18-19 TS Beryl   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
2005 Aug 29-31 Katrina            4 1.93
2005 Oct 07-08 TS Tammy   0.71
2006 Sep 01-02 TS Ernesto   0.57
2007 Jun 03-04 TS Barry   0.28
2008 Aug 27-28 TS Fay   0.90

 

Some interesting facts found in these lists.

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

-14 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

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