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Jan 4th Coastal Obs/Disc


mappy

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3 minutes ago, North Balti Zen said:

Radar loops, WV, hallucinations and now-casting along with the hi-res model talk all go in here now, right?

Yup, that's fine. But if it gets too bantery, I will be removing posts. 

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Just before other thread was closed Bob Chill Posted a precip map. It showed eastern 1/3 of SC getting precip. So far eastern 2/3 of SC is getting precip so further west already

the kicker perse is the new Arctic airmass front and you can see how the  high ne of NS is pushing on it and retarding its eastward motion 

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2 minutes ago, WxWatcher007 said:

Still a bit surprised that Wakefield hasn't issued a Blizzard warning for the eastern coast of MD. Looking at the guidance, the wind looks to be about as strong, and right along the shore at least, I doubt there will be an issue with frequent gusts to 35mph during the early morning hours. Could be an issue of visibility though...but I think that probably won't be an issue if we rip at the shore. Maybe later periods will pull the trigger?

 

Winds are strong enough.  They need to be sustained or frequent gusts of 35 mph or more.

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2 minutes ago, Tenman Johnson said:

Just before other thread was closed Bob Chill Posted a precip map. It showed eastern 1/3 of SC getting precip. So far eastern 2/3 of SC is getting precip so further west already

the kicker perse is the new Arctic airmass front and you can see how the  high ne of NS is pushing on it and retarding its eastward motion 

Don't just look at the radar... You need to look at the Obs.  A red tagger said yesterday that model take virga into consideration

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Current IR shows the gap between cloudbands well NW of were the GFS simmulated it.   GFS had it Paralleling the the Carolina coast.  Goes R shows its shooting NW fast. Proobably a good sign.

https://www.tropicaltidbits.com/analysis/models/?model=gfs&region=seus&pkg=ir&runtime=2018010312&fh=6&xpos=0&ypos=0

http://weather.cod.edu/satrad/exper/?parms=regional-southeast-14-48-1-100

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2 minutes ago, WxWatcher007 said:

Yeah, I think they will be. Not sure about sustained to 35 but I think the coast can get string together frequent enough gusts. 

LWX used to put out blizzard verification releases. I haven't seen one since 2010 here. Taunton did in more recent seasons. It seems that if the gusts are above 35 mph on the hourly reports, it's good enough for the forecast offices. They're not requiring sustained 35 mph. 

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1 minute ago, gymengineer said:

LWX used to put out blizzard verification releases. I haven't seen one since 2010 here. Taunton did in more recent seasons. It seems that if the gusts are above 35 mph on the hourly reports, it's good enough for the forecast offices. They're not requiring sustained 35 mph. 

LWX did one for 2016 where IAD verified the blizzard.  

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8 minutes ago, Eskimo Joe said:

LWX did one for 2016 where IAD verified the blizzard.  

Are you sure it wasn't for DCA? Looking at IAD obs-- there were not 3 consecutive hours of high enough wind gusts. DCA did meet criteria for 3 consecutive on-the-hour observations in a row (2:52 pm, 3:52 pm, 4:52 pm), which Capital Weather Gang pointed out. But that's really two hours, not three. 

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YUCK!

From LWX:

Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
207 PM EST Wed Jan 3 2018

Southern Baltimore-Prince Georges-Anne Arundel-Charles-
Northwest Harford-Southeast Harford-King George-
207 PM EST Wed Jan 3 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
11 AM EST THURSDAY...

* WHAT...Snow expected. Plan on slippery road conditions,
  including during the morning commute on Thursday. Total snow
  accumulations of 1 to 3 inches are expected.

* WHERE...Portions of central, northern and southern Maryland
  and central Virginia.

* WHEN...From 10 PM this evening to 11 AM EST Thursday.


URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
207 PM EST Wed Jan 3 2018

District of Columbia-Carroll-Northern Baltimore-
Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
207 PM EST Wed Jan 3 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
11 AM EST THURSDAY...

* WHAT...Snow expected. Plan on slippery road conditions,
  including during the morning commute on Thursday. Total snow
  accumulations of around one inch are expected.

* WHERE...The District of Columbia, portions of central, north
  central and northern Maryland and central and northern Virginia.

* WHEN...From 10 PM this evening to 11 AM EST Thursday.


URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
207 PM EST Wed Jan 3 2018
St. Marys-Calvert-
207 PM EST Wed Jan 3 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 11 AM EST THURSDAY...

* WHAT...Snow expected. Plan on slippery road conditions,
  including during the morning commute on Thursday. Total snow
  accumulations of 3 to 5 inches are expected.

* WHERE...St. Marys and Calvert.

* WHEN...From 10 PM this evening to 11 AM EST Thursday.

* 

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
207 PM EST Wed Jan 3 2018

Frederick MD-Southern Fauquier-Eastern Loudoun-
207 PM EST Wed Jan 3 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
11 AM EST THURSDAY...

* WHAT...Snow expected. Plan on slippery road conditions,
  including during the morning commute on Thursday. Total snow
  accumulations of up to one inch are expected.

* WHERE...In Maryland, Frederick MD. In Virginia, Southern
  Fauquier and Eastern Loudoun.

* WHEN...From 10 PM this evening to 11 AM EST Thursday.


URGENT - WINTER WEATHER MESSAGE
National Weather Service Mount Holly NJ
1223 PM EST Wed Jan 3 2018

...High Impact Storm including the aftermath of wind driven
record cold on its way to our area...

...A rapidly intensifying ocean storm will produce significant
snowfall and strong winds tonight through Thursday...

MDZ008-012-040530-
/O.EXA.KPHI.WW.Y.0001.180104T0000Z-180104T2200Z/
Cecil-Kent MD-
Including the cities of Elkton and Chestertown
1223 PM EST Wed Jan 3 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
5 PM EST THURSDAY...

* WHAT...Snow and blowing snow expected. Plan on slippery road
  conditions, including during the morning commute on Thursday. In
  addition, areas of poor visibility are expected. Total snow
  accumulations of 1 to 3 inches with locally higher amounts
  possible.

* WHERE...Cecil and Kent MD counties.

* WHEN...From 7 PM this evening to 5 PM EST Thursday.

*

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mount Holly NJ
1223 PM EST Wed Jan 3 2018

...High Impact Storm including the aftermath of wind driven
record cold on its way to our area...

...A rapidly intensifying ocean storm will produce significant
snowfall and strong winds tonight through Thursday...

MDZ015-019-020-040530-
/O.CON.KPHI.WW.Y.0001.180104T0000Z-180104T2200Z/
Queen Annes-Talbot-Caroline-
Including the cities of Centreville, Easton, and Denton
1223 PM EST Wed Jan 3 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 5 PM EST THURSDAY...

* WHAT...Snow and blowing snow expected. Plan on slippery road
  conditions, including during the morning commute on Thursday. In
  addition, areas of poor visibility are expected. Tree branches
  could fall as well. Total snow accumulations of 2 to 4 inches
  are expected with locally higher amounts possible.

* WHERE...Queen Annes, Talbot and Caroline counties.

* WHEN...From 7 PM this evening to 5 PM EST Thursday.


URGENT - WINTER WEATHER MESSAGE
National Weather Service Wakefield VA
900 AM EST Wed Jan 3 2018

Westmoreland-Richmond-Brunswick-Dinwiddie-Prince George-
Charles City-New Kent-Eastern Hanover-
Eastern Chesterfield (Including Col. Heights)-Eastern Henrico-
Western King William-Eastern King William-Western King and Queen-
Eastern King and Queen-Western Essex-Eastern Essex-
Including the cities of Lawrenceville, Petersburg, Hopewell,
Mechanicsville, Chesterfield, Chester, Colonial Heights,
Sandston, Aylett, King William, West Point,
King And Queen Court House, Tappahannock, and Dunnsville
900 AM EST Wed Jan 3 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING
TO NOON EST THURSDAY...

* WHAT...Snow expected. Plan on slippery road conditions,
  including during the morning commute on Thursday. Total snow
  accumulations of 2 to 4 inches are expected, with locally higher
  amounts east of Interstate 95.

* WHERE...Portions of central, east central and south central
  Virginia.

* WHEN...From 10 PM this evening to noon EST Thursday.

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I don't care what the models say, the radar returns are moving nicely NW here. I know all about lack of ground obs, but the models have sim/rad return products and they don't show such a NW move.

http://weather.unisys.com/radar/hires_rad.php?image=rad&inv=0&t=l3&region=at

Here's the NAM 3K for 2PM.....the BEST model for snowfall and it shows nothing like this.

https://www.tropicaltidbits.com/analysis/models/?model=nam3km&region=us&pkg=satradar_frzn&runtime=2018010312&fh=7&xpos=0&ypos=0

Here's the NAM for 2pm

https://www.tropicaltidbits.com/analysis/models/?model=namconus&region=us&pkg=ref_frzn&runtime=2018010312&fh=7&xpos=0&ypos=218

 

even when you click ahead one hour to 3pm, it's still not like reality

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We haven't yet mentioned the DWD-ICON (German) model, probably because it has been dry as a bone for the cities.  But the 12z run today for the first time brought measurable precip (about 0.05" qpf) to DC and Baltimore. 

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