Altoona, Pennsylvania

We are going to western Pennsylvania for tonight’s forecast. Now is the time of year that they need to be constantly on the look out for flurries.

At 208AM, ET, Altoona was reporting overcast skies and some flurries. Altoona is the sole location reporting any snow, and a look at the satellite and radar wasn’t particularly revelatory either. Models suggest a lake effect fetch, and low topped, light snow would fail to show up on either satellite or radar imagery. There will continue to be a threat for these light snow showers until the prevailing flow switches to become more southwesterly.
When that happens, however, it will be because of an approaching cold front moving through the Upper Midwest. There will be a weak, broad wave rippling on the north side of a stronger jet streak running south of Pennsylvania. The boundary moving through Pennsylvania will as a result be diffuse and disorganized. Rather than a line of snow showers, it will be an indistinct swath of snow, without any embedded squalls or heavy snow bands. It will move through quickly with a quick couple of inches possible  overnight Sunday to Monday before the boundary kicks out of town thanks to the snow’s persistence. A deeper trough around the Front Range of the Rockies will be manufacturing a stronger system to trail this weaker one, and this new system will arrive later in the week. During the valid period of this forecast, however, its advance will lead to a slight warm up on Monday.
Tomorrow – Light snow early, then more moderate snow in the evening, High 40, Low 34
Monday – Morning snow, 1-2″ possible in total High 41, Low 32

TWC: Tomorrow – Cloudy. (late rain/snow) High 44, Low 33
Monday – A shower of rain or wet snow possible early. Overcast. High 42, Low 36

AW: Tomorrow – Mostly cloudy (late snow) High 43, Low 31
Monday – A flurry early on in the morning; otherwise, cloudy High 44, Low 34

NWS: Tomorrow – Mostly cloudy (Late rain/snow), High 42, Low 30
Monday – A slight chance of snow showers before 1pm. Mostly cloudy, High 43, Low 33

WB: Tomorrow – Mostly cloudy, rain and snow late. High 41, Low 31
Monday – Cloudy in the morning. Then becoming partly sunny (early snow) High 42, Low 35

WN: Tomorrow – Mostly cloudy (Late rain/snow), High 43, Low 30
Monday – Mostly cloudy with chance of light snow showers, High 43, Low 34

FIO: Tomorrow – Mostly cloudy throughout the day. High 42, Low 32
Monday – Light rain until morning. High 39, Low 31

Sorry for that sort of word salad of a forecast. It’s an interesting pattern, though. Disorganized, but there is a pattern. Tough to see on the satellite though, as there is a lot of high cloud activity across the country, and the northern, weaker system is bleeding into the strong, southwestern feature.

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