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January 12-13th Cold Smoke Obs and Nowcast


Bob Chill
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2 minutes ago, Bob Chill said:

Outer band in wv panhandle is moving east now. Turn has begun and slp off the coast is pulling away. Normally i'd say expect radar to fall apart over the next 2 hours but all bets are off on this one. This storm already broke all the rules. Why stop now?

Check your math, big guy.  Western extent is still expanding west.

13janULL.thumb.gif.66326a0dacc74835f9d498b10e1d0400.gif

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1 minute ago, Bob Chill said:

Lol. Bad geography on my part. Outer band near front royal is pulling east now. What am amazing and extremely localized storm

I like to use this loop to see the subsidence on the back end of storms coming through.  Sure, it's composite but that's helpful in seeing the non (or very light) precip features.  It's helpful for the back edge hallucinations that are created by the spine of the mountains to our west as well since LWX radar does not typically see over the ridge tops but KRLX and KBPX can see what's over there.

https://www.atmos.washington.edu/~ovens/wxloop.cgi?radar_us_full+/2h/

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956 
WWUS81 KLWX 132319
SPSLWX

Special Weather Statement
National Weather Service Baltimore MD/Washington DC
619 PM EST SUN JAN 13 2019

DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ031-038>040-050>057-
501-502-505-506-WVZ053-140115-
District of Columbia-Calvert-Southern
Baltimore-Carroll-Charles-Southeast Harford-St. Marys-Northwest
Howard-Prince Georges-Central and Southeast Howard-Northwest
Montgomery-Frederick-Northern Baltimore-Anne Arundel-Central and
Southeast Montgomery-Northwest
Harford-Greene-Fairfax-Culpeper-Arlington/Falls
Church/Alexandria-Prince William/Manassas/Manassas Park-Northern
Fauquier-King George-Madison-Western Loudoun-Rappahannock-Eastern
Loudoun-Stafford-Clarke-Spotsylvania-Orange-Southern
Fauquier-Jefferson-
619 PM EST SUN JAN 13 2019

...MODERATE TO HEAVY SNOW CONTINUING THIS EVENING FOR AREAS EAST OF 
THE BLUE RIDGE MOUNTAINS TO THE CHESAPEAKE BAY...INCLUDING 
THE GREATER BALTIMORE AND WASHINGTON METROPOLITAN AREAS...

At 615 PM EST, numerous snow showers, some moderate-to-heavy, 
continue in much of the region east of the Blue Ridge Mountains to 
the Chesapeake Bay, including the greater Baltimore and Washington 
Metropolitan Areas. Visibilities in some of these snow showers are 
less than a quarter of a mile, with road conditions quickly 
deteriorating now that it is after sunset.

A Winter Storm Warning remains in effect until Midnight, with an 
additional 1 to 3 inches of snowfall expected before tapering off to 
flurries around midnight.  Temperatures will drop into the lower 20s 
overnight, so significant refreezing is likely.

Icy roads are possible as the snow melts on the roads then quickly 
refreezes.  Conditions can deteriorate rapidly in winter weather 
situations. Be prepared for snow or ice covered roads. Slow down and 
allow extra time when traveling.

LAT...LON 3920 7644 3927 7663 3901 7638 3901 7639
      3832 7646 3841 7655 3839 7656 3804 7632
      3843 7706 3836 7721 3888 7704 3846 7733
      3814 7707 3825 7734 3801 7762 3827 7852
      3969 7743 3965 7616 3945 7606
TIME...MOT...LOC 2314Z 234DEG 37KT 3940 7728 3789 7684 
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