A slow moving system will bring showers and thunderstorms to the area today, some with very heavy rain.

Northern Oneida-Onondaga-Madison-Southern Oneida-Chenango-Otsego-
Delaware Counties has a Hazardous Weather Outlook.

.DAY ONE...Today and Tonight.

A slow-moving low-pressure system over Pennsylvania will bring showers and thunderstorms to the area, some of which may contain very heavy rain. This heavy rain may cause flooding of low lying areas and culverts.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Additional rain is expected Tuesday with isolated heavy rain
possible.

National Weather Service

The National Weather Service out of Binghamton says:

... Short term high-resolution models are showing exploding precip over northeast PA this morning into central NY near that low-level inflow and under the favorable upper jet.

With model QPF ranging from a couple inches to isolated 5-inch amounts, and wet antecedent conditions, Flash Flood Watch seems prudent for the area, especially given the sensitivity to rain and the near term history, and the weak steering flow that will
cause slow moving cells. At this time, most threatened areas are most of NEPA into the southern tier counties of NY. The threat could extend further north later today and this evening into the Finger Lakes, but that is less certain and that area has seen
less rain. WPC upgraded much of the area from marginal to the moderate threat of flooding as well.

Rain should taper off a bit this evening as some of the forcing for the convection is instability and heating related. Showers will fire again on Tuesday, but tropical inflow will have moved east by then.

Extended Forcast from the National Weather Service:

Today: Isolated showers before 2pm, then scattered showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 79. East wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 66. Northwest wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rain. Cloudy, with a high near 76. Calm wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a half and three-quarters of an inch possible.

Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. West wind 3 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. West wind 5 to 9 mph. Chance of precipitation is 30%.

Wednesday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

Thursday: A chance of thunderstorms before 8am, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 84. Chance of precipitation is 40%.

Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.

Friday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.