Ohio to Pennsylvania Weather: 6/9/17

Yesterday, we drove from Indianapolis, IN, to Lodi, OH, to visit Aunt Barb.  Today, we will drive to Pittsburgh, after visiting some family in the Cleveland area.

This morning has been mild, mostly cloudy, and still.

National Weather Service (NWS) in Cleveland, OH, forecasts (for Lodi, OH) a mostly cloudy day, with a 30% chance of scattered showers and thunderstorms, and a high temperature of 77 F. The winds will be from the southwest at 11 mph.

The NWS in Cleveland, OH, forecasts (for Cleveland, OH) a mostly cloudy day, with a 30% chance of scattered showers and thunderstorms, and a high temperature of 77 F. The winds will be from the west at 9 mph.

The NWS in Pittsburgh, PA, forecasts (for Pittsburgh, PA) a mostly sunny day, with a high temperature of 78 F. The winds will be from the west at 9 mph.  This evening will be mostly cloudy, with a 50% chance of scattered showers and thunderstorms, and a low temperature of 61 F. Winds will be from the south at 5-7 mph.

The visible satellite imagery shows a cluster of clouds over the northern part of Ohio this morning.

The infrared satellite imagery shows that these clouds are moderately thin, with warm, low tops.

The water vapor imagery shows nearly uniform moisture over our travel route this morning.

The 12Z sounding from Pittsburgh, PA, shows a damp atmosphere.  There was 0.69 inches of precipitable water present in the column this morning.  There was no Convective Available Potential Energy (CAPE) or Convective Inhibition (CINH) present.  There was a tiny thermal inversion near the surface, and the 0-3 km average lapse rate was 4.6 C/km.

The hodograph shows that there was 8 kts of low-level shear (mostly due to directional changes) and 36 kts of deep-layer shear (mostly due to speed changes).

The surface observations (from the SPC Mesoscale Analysis Map) show mild temperatures, and moderate humidity (based on the surface dewpoint depressions).  The skies are mostly clear, with a light, westerly breeze.  There are no major frontal boundaries along our travel route this morning.

The surface pressure chart shows that we are under no strong pressure systems or gradients, and the RAP shows that none are expected to develop in the next six hours.

Synoptically speaking, the 300 mb NAM chart (from Unisys) shows that we will remain in the western edge of a small trough again today.  This trough is broadening and attenuating.

The 500 mb NAM chart shows that there is no strong vorticity advection over the state today.  This chart has been excluded from today’s post.

The 700 mb NAM chart shows no major pockets of rapidly-rising air along our route today.  This chart has been excluded from today’s post.

The 850 mb NAM chart shows no strong thermal advection over the state today.  This image has been excluded from today’s post.

The Precipitation chart shows that rain is possible, especially when we are near Cleveland.

We will likely see some rain along during our visit, and then this evening, but severe storms are unlikely with such low shear.

Thank you for reading my forecast.

The upper air soundings and mesoscale analysis plots are from the Storm Prediction Center website.
The forecasted upper air soundings are from TwisterData.com.
The surface observation and upper level charts are from Unisys Weather.
The satellite data is from College of DuPage – SATRAD

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About highplainschasing

This blog is about my tales in storm chasing. My name is Seth Price and I am an instrumentation instructor at New Mexico Tech. My amateur radio call sign is N3MRA.
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