Monday 10 a.m.
Here is my morning video:
Drier air is moving into the Northeast today. On Friday, I talked about the rain-producing storm in the southern Plains as being volatile. It stayed that way as it moved east. Philadelphia's International Airport was flooded by more than 8 inches of rain, a one-day record. July's rainfall of more than 13 inches makes this the wettest July in the history of record keeping for the city.
This map shows a number of rainfall observations for the area around Philadelphia. You can see that while 8 inches was the extreme, other places close by received more than 5 inches:
July 29, 2013
Water is an important topic, and its importance is stressed in an unusual way each July 29 because of the Legend of Waynesburg. According to legend, it rains in Waynesburg, Pa., much more often than usual on this date. According to records maintained there, it has rained in Waynesburg on this date in 111 of the last 136 years through last year.
There should be no showers in the Waynesburg area today, but on previous occurrences of July 29, we have been watching things there. Sometimes it seems truly amazing because they seem to have recorded rain when no satellite picture shows a cloud and no radar returns an echo. However, who are we to say the legend is all wet? Submerge that thought.
Water and terms associated with it can be very important in our everyday conversation. A river of humid air has been streaming from the Gulf of Mexico to New England, and we have a notion there'll be showers in eastern New England today. Last evening, a narrow corridor of thunderstorms dropped 8 inches of rain in the area from south Philadelphia into adjacent South Jersey. The pool of strong thunderstorms caused damaging winds and cloud bursts of rain. Gutter gushing rivulets turned roads into rivers, streets to streams and lanes into lakes.
Philadelphia has had 13 inches of rain this month, making it the wettest July ever. The greatest total for any month was 19.31 inches in August 2011 when Hurricane Irene inundated the region.
Back to the subject of rain, when you are on vacation it can be challenging to find alternate activities because everyone else is trying to do the same thing. One idea that could serve you well is visiting a museum and and seeing the work done by painters, sculptors and other artesians.
A cold front moving east from the Great Lakes and Ohio Valley will move off the East Coast by tomorrow morning. This map shows the location of the front at 7 a.m. EDT today.
The NWS Storm Prediction Center issued this outlook for today and tomorrow: A preliminary area of showers may advance from the Carolinas as far as southeastern Pennsylvania and southern New Jersey by tonight.
For the almost 24 hours between 10 a.m. ET Tuesday and 9:20 a.m. ET today, here is a the lightning recap. The dry pattern from the Midwest will now advance across New York and New England.
Cooling aloft and heating moist air closer to the ground should trigger strong thunderstorms from eastern New York and much of New England southwest through parts of the Middle Atlantic states.
The front will move into a region with high humidity as it approaches the I95 corridor tomorrow. This is the basis for SPC's forecast of thunderstorms approaching severe limits tomorrow.
Tropical Storm Colin is caught in the southern stream while the northern stream is helping to send unseasonably cool air out of central Canada.