Jan 25, 2014 Storm Updates

6:00 PM: Moderate Snow in Long Island

1.25_2245As of 6pm, the low pressure is centered in between NY state and the Hudson Bay, over Montreal. Minimum pressure is near 984mb, and the low continues to track NNE. The arctic front is currently entering western NY/PA and will continue to track east this evening, reaching the area tonight.

The second round of moderate snow that develop had the most significant impact over NYC and Long Island, where moderate snow accumulated to near or slightly over an inch so far, with another hour of snow left. Further west, snow has quickly moved out of locations west of NYC, with the city about to dry out within the next 15-20 minutes as well. Snow totals were generally higher than expected near western and central NJ, with reports of near to slightly over 2 inches of snow.

This is the final storm update for today. The forecast discussion and updated 8-day outlook will be posted by 9pm tonight.

3:30 PM: Second Round Moving In

1.25_2000As of 3pm, the low pressure is centered near southwestern Montreal. Minimum pressure is near 983mb, and the low is tracking NNE. The occluded frontal boundary is near northeast Ohio, and will continue to track southeast, reaching the area overnight.

The initial band of moderate snow weakened while nearly stalling over NYC, although additional moderate snow has developed over central-southern NJ into SE PA and is tracking towards the area. Additional light to moderate snow is expected to redevelop after 4pm, including NYC, Long Island and CT, continuing through at least 5-7pm before tapering off from west to east. Temperatures will remain steady in the mid 20s to near 30 degrees through at least 1-2am, when the front will move through with a risk of isolated snow showers, followed by a quick drop in temperatures into the mid 0s to low 10s from NYC and north/west and mid-upper 10s near the coast by Sunday morning with daytime highs only in the upper 10s to low 20s. Along with a strong westerly wind, wind chill values are expected to reach the 0 to -5 degree range later tonight into Sunday morning.

Another update may be posted later, otherwise the next full forecast discussion will be posted this evening.


11:45 AM: Snow Moving Through NJ

1.25_1615As of 11am, the low pressure is centered near the southern Ontario/Montreal border. Minimum pressure is near 985mb, and the low is tracking NNE. The occluded frontal boundary is near southeast Michigan, tracking southeast, and will move through the area overnight.

A narrow line of moderate snow has developed well ahead of the frontal boundary, and is currently over northern NJ, slowly shifting east. Snow is likely to reach NYC by 1pm and Long Island/CT by 2-4pm. While the snow west of central Pennsylvania is not expected to reach the area in its entirety later tonight, additional snow development is likely near the area into the early afternoon before moving northeast and offshore, ending by the late afternoon to early evening hours. Despite a strong south-southwesterly flow in the lower levels, enough cold air has been entrenched over the region to support precipitation type remaining as snow with highs in the upper 20s-low 30s, except for eastern parts of Long Island which are likely to reach the mid-upper 30s, with the wind resulting in areas of blowing and drifting snow with lowered visibility at times. Snow accumulations of 1/2 to 1 inch are expected, locally higher in parts of the area; the highest probability of 1+ inch totals is west of NYC, with isolated 1+ inch totals possible near and east of NYC.

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