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October Discobs Thread


George BM

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Frost Adv up for just about everyone tonight... except for MD counties bordering the Bay (not including St. Mary's)

URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
219 PM EDT Tue Oct 17 2017

DCZ001-MDZ003>006-013-016-017-502>507-VAZ028>031-036>040-050>056-
501-502-505-506-WVZ050>053-055-180230-
/O.CON.KLWX.FR.Y.0004.171018T0500Z-171018T1300Z/
District of Columbia-Washington-Frederick MD-Carroll-
Northern Baltimore-Prince Georges-Charles-St. Marys-
Central and Eastern Allegany-Northwest Montgomery-
Central and Southeast Montgomery-Northwest Howard-
Central and Southeast Howard-Northwest Harford-Frederick VA-Page-
Warren-Clarke-Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-
Culpeper-Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-Hampshire-Morgan-Berkeley-Jefferson-Hardy-
Including the cities of Washington, Hagerstown, Frederick,
Ballenger Creek, Eldersburg, Westminster, Reisterstown,
Cockeysville, Bowie, Suitland-Silver Hill, Clinton, College Park,
Greenbelt, Laurel, Camp Springs, St. Charles, Waldorf,
Lexington Park, California, Cumberland, Germantown, Damascus,
Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon,
Columbia, Ellicott City, Jarrettsville, Winchester, Luray,
Shenandoah, Stanley, Front Royal, Berryville, Lovingston,
Charlottesville, Stanardsville, Madison, Orange, Gordonsville,
Culpeper, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair,
Reston, Herndon, Annandale, Centreville, Chantilly, McLean,
Franconia, Arlington, Alexandria, Falmouth, Fredericksburg,
Warrenton, Turnbull, Purcellville, Leesburg, Ashburn, Sterling,
Romney, Paw Paw, Martinsburg, Charles Town, Shepherdstown,
and Moorefield
219 PM EDT Tue Oct 17 2017

...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM EDT
WEDNESDAY...

* TEMPERATURES...Dropping into the mid 30s by dawn, especially
  away from larger bodies of water and urban areas.

* IMPACTS...A Frost Advisory means that widespread frost is
  expected. Sensitive outdoor plants may be killed if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&
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This morning's AFD from LWX for next week mentions the S word:

Guidance still shows a cold front and wave of low pressure
moving toward the region early next week, but are a bit less in
sync than last night. The GFS is significantly slower than the
EC in bringing the upper low and its associated surface wave
northeastward into the region, causing Monday to be drier on the
GFS than on the EC, with a faster drying trend as we head into
the middle of the week on the EC than on the GFS. Overall, will
keep chance of showers, and heavy rain remains possible, given
strong wave and potential for training along the stalling front.
Both models also still show a very deep trough digging over the
eastern US behind the system for mid-late week next week. This
is something that would likely end the growing season across
much of the region, while also perhaps trying to get a few snow
flakes flying, especially in our higher terrain. Still, there`s
a long time to watch this.

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