August 2004 Pennsylvania Weather Summary

August 4th: A barrage of severe weather erupted across the central part of the Commonwealth, prompting tornado warnings for 5 counties. An unofficial tornado was noted in the Harrisburg area (The third in a little less than a month).

August 6th-14th: Temperatures during the second week of August were slightly below average for the state, reaching the mid-70s to low-80s due to a large high pressure system located over the Mid-West and Mid-Atlantic states. On the 10th - 14th, substantial rainfall was seen throughout the state, beginning in the northwest and continuing southeastward through the rest of the region as a weak cold front slowly pushed through and moisture from Bonnie moved northward. Some eastern counties of Pennsylvania also saw rain from the remnants of Hurricane Charley as it moved through the Northeast.

August 15th-21st: High pressure began to build back into the Commonwealth on the 16th as conditions dried out and temperatures rose back above 80F. High humidity plagued PA as another cold front approached from the west, which packed more precipitation ahead of it in the form of severe thunderstorms. Counties in western and central PA saw the majority of the severe weather in the afternoon. Most of the state measured above one inch of rain for this week.

August 22nd-August 31st: Enjoyable weather finally stayed around a bit longer for the final week of August. The rain came in the form of isolated thunder showers on the 27th through the 29th along with uncomfortable humidity and temperatures in the 80s. As school began during the last week of August, comfortably warm temperatures returned to the region with mainly sunny skies.

Pennsylvania August 2004 Weather Extreme Summary Info


Max High Temp: 96 °F Valley Forge -- August 4, 2004
(Daily)

Min Low Temp: 37 °F Kane -- August 6-7, 2004
(Daily)

Max Rainfall: 9.59" Matamoras
(Monthly)

Min Rainfall: 1.59" Southampton
(Monthly)

Max Snowfall: 0 "
(Monthly)