Chipperdog.comNovember 26, 2014

Nor’Easter Delivers First Measurable Snow

November 25th, 2014

11/26 – 2:30 PM Update: Light to Moderate Snow will continue throughout the afternoon. Storm total currently at 4.2″ with 0.84″ liquid. A dry-slot worked its way in during the last hour and allowed temperatures to go up slightly, and limited accumulation.

A quick-moving Nor’easter will impact the area most of the day Wednesday. As with most early season storms elevation and distance from the relatively warm ocean will strongly affect totals. The other factors for this storm are the track of the Low, warm surface temperatures, and the lack of a blocking high pressure to our North.

The overall synopsis has not changed since last night’s post so I’m still expecting 3 to 6″ of snow with ratios of 6:1 up to maybe 8:1 (snow/liquid equivalent). There is the potential Berks could be in the banding zone where heavy bursts can accumulate a quick to 2 to 3 inches. If this is the case accumulations could reach the 8 to 10″ that some forecasters have been hinting at.

The 11/26 11:00 AM surface map below shows the storm is fully developed and we have all snow:

WU Surface Map - November 26th, 2014

November 26th, 2014 Snow 11AM

Note: The station daily record for snow in November is 3.0″ from November 19th, 2007. Over the 10 year history we have only averaged 0.8″ of snow in November so tomorrow’s event will be unusual.

Early Snow in Forecast for Wednesday

November 24th, 2014

Monday’s record high at the Reading Airport of 71 °F will lead to an early snow storm for Berks by Wednesday. Since we are very early in the season and the temperatures were so warm today snow totals will vary quite a bit.

The map below is very early in the forecast cycle but shows Berks is forecast for 6 to 8″ of snow. Depending on timing and storm track quite a bit of snow will melt before accumulation begins. This snow will be of the heavy and wet variety so power outages will be possible from broken tree limbs. Since the storm hasn’t even formed yet I’m sure forecast changes are inevitable. The WxSIM forecast, for example, currently doesn’t agree with the NWS snow accumulations and is predicting over 0.50″ of liquid but very little accumulation.

NWS Estimated Snowfall for Nov 26th, 2014

Polar Vortex Arrives in Northeast

November 17th, 2014

The infamous Polar Vortex has arrived for the entire Northeast! The Arctic Cold Front recently pushed through following Monday’s soaking rains as shown in the map below.

Unlike last week’s winter preview we will observe the real frigid air this time. Expect highs for Tuesday and Wednesday to struggle to reach freezing while wind gusts out of the Northwest will yield single digit wind chill values. Temperatures will then moderate only slightly so expect this cold spell to last throughout the weekend.

Official record lows and record low maximums will be challenged over the next two days. Station records will definitely be broken so an update will be posted later.

The Reading Airport reached 17 °F on 11/17 breaking the previous record low of 18 °F from 1936.

NE Surface Fronts Map - Nov 17th, 2014

Heavy Rains Pound Berks

October 15th, 2014

Friday, 10/17 Update: Storm Total was 3.72″
Other areas reporting: Reading Airport: 3.46″, Lancaster Airport: 4.43″, Lincoln Park: 3.80″, Mohnton: 3.22″, Wyomissing: 3.73″, Muhlenberg: 3.40″, Hamburg: 3.57″, Kutztown: 3.32″, Fleetwood: 3.39″, Oley: 2.73″, and Boyertown: 1.93″.

Heavy rains overspread the entire area today bringing much-needed rainfall. As of 10 PM the station recorded 2.88″ and the Reading airport received 2.91″ which smashed the daily record of 1.17″ from 1977. The western half of the county was the bulls-eye for this storm system as shown in the radar estimates below.
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