The Northeast Weather Blog... |
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| Posted by: Zachary Labe, 20:58 GMT le 04 janvier 2012 | +4 |










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Cornell University- Atmospheric Sciences Student; Central PA SKYWARN Storm Spotter; American Meteorological Society Member; PA CoCoRaHS Branch Member
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Linglestown, PA
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| Elevation: | 520 ft |
| Température: | 84.8 ° F |
| Point de rosée: | 72.2 ° F |
| Humidité: | 66% |
| Vent: | Calme |
| Rafale de vent: | 5.0 mph |
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Updated: 12:52 EDT le 22 mai 2013
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That's here in Annandale, VA. Your tone sounds promising Blizz!!! Yayayayay!
Late Afternoon: Rain, snow, and sleet likely. Cloudy, with a high near 39. South wind around 6 mph. Chance of precipitation is 70%. Total daytime snow and sleet accumulation of less than a half inch possible.
Tonight: Rain, snow, and sleet likely before 7pm, then a chance of rain between 7pm and 10pm. Cloudy during the early evening, then gradual clearing, with a low around 31. South wind at 5 mph becoming west. Chance of precipitation is 60%. New snow and sleet accumulation of less than a half inch possible.
A few lucky areas may pull out 1in down your way with this second wave now approaching the region. Good luck!
It's fun to see snow flying out the office window, but at 36F, it's not a travel problem at all.
New blog should be out today.
BWI- I was going to mention the possibility yesterday, but decided not too as I thought temperatures would be too warm that direction. I am a bit surprised to see the reports so far south.
Cold is certainly coming, snow will probably come too. The pattern will be one where some storms will perform, while others disappoint. None the less the fear of everything being dry and suppressed with the cold looks not to be the case. Latest trends are showing a very stormy and active period coming up starting midweek this week.
you know it is time to bust on Blizz and some others. The past two weeks or more I heard the models don't show anything for 6 weeks. Just look back to what I said on Friday, huh. you guys are a laugh
;) I am just covering all of my bases for whatever happens.
Congrats DC. Looks like you may pick up 1-3in of snow, nice burst moving through soon.
KDCA 092135Z 19003KT 1/2SM R01/3500V5500FT SN FG VV008 01/M01 A3019 RMK AO2 P0005
Awesome :) Flakes on Friday morning are the best!
Matlack ~ Where are you located that the bulbs are sprouting? Wow!
Q: How are snowflakes formed?
A: A snowflake begins to form when an extremely cold water droplet freezes onto a pollen or dust particle in the sky. This creates an ice crystal. As the ice crystal falls to the ground, water vapor freezes onto the primary crystal, building new crystals, thus the six arms of the snowflake.
That's the short answer.
The more complex explanation is this:
These ice crystals that make up snowflakes are symmetrical (or patterned) because they reflect the internal order of the crystal's water molecules as they arrange themselves in predetermined spaces (known as crystallization) to form a six-sided snowflake.
Ultimately, it is the temperature at which a crystal forms, and to a lesser extent the humidity of the air that determines the basic shape of the ice crystal. Thus, we see long needle-like crystals at 23 degrees F and very flat plate-like crystals at 5 degrees F.
The intricate shape of a single arm of the snowflake is determined by the atmospheric conditions experienced by entire ice crystal as it falls. A crystal might begin to grow arms in one manner, and then minutes or even seconds later, slight changes in the surrounding temperature or humidity causes the crystal to grow in another way. Although the six-sided shape is always maintained, the ice crystal (and its six arms) may branch off in new directions. Because each arm experiences the same atmospheric conditions, the arms look identical.
Q: So, why are no two snowflakes exactly alike?
A: Well, that's because individual snowflakes all follow slightly different paths from the sky to the ground and thus encounter slightly different atmospheric conditions along the way. Therefore, they all tend to look unique, resembling everything from prisms and needles to the familiar lacy pattern.
This is pure verbatim the 0z NAM, but probably a good 2-3in of snow along the PA turnpike and on northward before changing to a cold rain.
Definitely looking like the potential is there for advisory snows towards your area with possible freezing rain also. Stay tuned! Just north of Worcester could be warning criteria snow and ice.
so that is mid-week storm...anything coming this weekend?
Snow depth map looks off to me. This is a cold air damming event so therefore the higher elevations towards the Laurel Highlands would be torched with no snow. Probably the best area to be in Pennsylvania would be the northern mountains near the Poconos on northeastward. Around the 16th some guidance is suggesting a winter storm. After my little excitement burst midday today, hahah, I will back off a bit. But there is definitely a slight threat in that time period. It all depends on the timing of the southern stream, so it remains up in the air at this point. It is probably more likely this threat goes out to sea rather than to our west.
Link
Central New Jersey. Many of the Oxalis have broken the surface. Worried about the grapes more as they are more susceptible to damage.
My bets are on rain again! :(
I'd rather get nothing than rain for this winter. It's not as if we're in desperate need of moisture like they are out west.
Areas in New England will get some snow/sleet and freezing rain, but the entire system is progged to be quite a bit warmer than it looked yesterday. Some areas could see 1.5in of rain!
Precipitation Departure From Average 2011
Meanwhile, the incredible Alaska snows continue. The forecast for Cordova, who has seen 18 feet in the last 2 weeks!..
...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 4 PM AKST THIS
AFTERNOON...
A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 4 PM AKST THIS
AFTERNOON.
* LOCATION...SOUTHEAST PRINCE WILLIAM SOUND.
* SNOW...6 TO 14 INCHES THROUGH THIS AFTERNOON. SNOW DRIFTS OF 1
TO 2 FEET POSSIBLE.
* VISIBILITY...ONE QUARTER MILE OR LESS AT TIMES.
* WIND...25 TO 40 WITH LOCAL GUSTS TO 55 MPH.
* TIMING...WINDS AND SNOWFALL WILL CONTINUE EARLY AFTERNOON.
SNOW WILL MIX WITH RAIN BY LATE AFTERNOON RESULTING IN
IMPROVED VISIBILITIES.
* IMPACTS...SNOWFALL COMBINED WITH STRONG WINDS AND BLOWING SNOW
WILL PRODUCE WHITE-OUT CONDITIONS AT TIMES. INCREASED
AVALANCHE DANGER.
LT: Thanks. I'll bet 34 seems like yesterday.
ECMWF weeklies are dreadful after that period. They average well above normal for areas down here.
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