Winter Storm for Mid-Atlantic and Northeast; Arctic Air Spreads South and East into Next Week

A developing winter storm will track across the Mid-Atlantic and Northeast Sunday and Sunday night. Meanwhile, arctic air continues to dive southward across the center of the nation and will spread eastward into the new week. Cold temperatures and strong winds will result in dangerous low wind chill values for locations along and east of the Rockies. For southern California, Santa Ana winds return Read More >

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Regime #4

1000-700mb mean vector flow:

W / SW : 4 kts <= Wind <= 10 kts

344 Total Days in Climatology

Rainfall Probability

Regime 4 Rainfall Probability

**6 Hour Probabilities**

**3 Hour Probabilities**

**Hourly Probabilities**

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