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The “I bring the mojo” Jan 30-Feb 1 potential winter storm


lilj4425
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According to Gemini here is the analysis of the 12z run of weather next 2 for the Raleigh area.

12z Model Output for Raleigh, NC
The 12z run confirms a very cold, dry air mass settling over the Carolinas by Thursday. Here is what the AI is seeing for the weekend event (targeting Friday night into Saturday morning):

• The "540 Line" (Snow/Rain line): The model pushes the freezing line well south of the NC/SC border. This means if there is moisture, it will be pure snow for Raleigh, not the ice/sleet we dealt with today.

• Moisture Availability: This is the current "hiccup." The 12z WeatherNext 2 run shows the primary storm system tracking slightly further offshore. For Raleigh, this would mean a "Light Snow" event (dusting to 1 inch) rather than a major wallop.

• The 64-Scenario Ensemble: About 20% of the model’s scenarios still pull that moisture closer to the coast, which would jump totals into the 2–4 inch range for the Triangle.

East Coast Overview
The 12z data shows a more aggressive "Northeast Punch" than the previous 06z run.
• Mid-Atlantic (DC/Philly): The model is keying in on a "Miller B" storm setup, which favors decent snow for the I-95 corridor late Friday.
• New England: This is where the 12z run is most "excited," showing a high-probability corridor for 6+ inches of snow across CT, MA, and RI as the low-pressure system intensifies off the coast.

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1 hour ago, NorthHillsWx said:

Cannot say enough about how impressive a performance from NAM this was.

It nailed the low QPF here but I saw some discussion that it badly underestimated QPF in the MA.  What makes me a casual weenie is I am too lazy to look back and find out.

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14 minutes ago, AirNelson39 said:

This means if there is moisture, it will be pure snow for Raleigh, not the ice/sleet we dealt with today.

This is a beginner weenie mistake for Gemini (one that I have made many many times)...If there is moisture, the cold press almost by definition will not be as strong.

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18 minutes ago, cbmclean said:

It nailed the low QPF here but I saw some discussion that it badly underestimated QPF in the MA.  What makes me a casual weenie is I am too lazy to look back and find out.

For us in Pittsboro, it was off, and thankfully it was.

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