arlwx

Just measured 0.3" of pure sleet in Arlington VA.

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
920 AM EST Thu Feb 18 2021
(snip)
.NEAR TERM /THROUGH TONIGHT/...
9:15 AM UPDATE: Significant changes to the snowfall forecast
since the previous update. Warm air aloft has moved into the
region very quickly, albeit a very small layer that can be seen
in the 12z IAD RAOB. The warm layer is between 850-775mb, with a
max temp of around 1.5 C. Unfortunately for snow lovers, that
is all it really takes to change snow to sleet. This has
drastically reduced snow totals, as the heavier rates have yet
to overcome that small warm layer, which is somewhat surprising.
Very sharp gradient, with highest snow totals along/north of
I-70 and along/west of I-81. Have even seen some freezing rain
creep into the forecast area much earlier than anticipated,
which is rather concerning.

The general synoptic setup is no different than previously
described, with high pressure to our northeast, and low pressure
sliding by to our south. The warm advection aloft just won out
today, resulting in the lower totals thus far, as sleet just
doesn`t accumulate at the same rate as snow. That being said,
the impacts are the same, with sleet/freezing rain leading to
hazardous travel conditions across the region. So, just because
snow totals haven`t panned out in some places this morning,
still exercise caution when going out and about today.

Just before 5 PM, I measured about 0.2" of icy accumulation in Arlington, of which half was sleet and half frozen rain , all frozen together in a sheet on my car. I didn't dare go further out to measure my driveway, too icy.

My bushes have ICICLES!

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
156 PM EST Sat Feb 13 2021

District of Columbia-Prince Georges-Anne Arundel-
Northwest Montgomery-Central and Southeast Montgomery-Madison-
Rappahannock-Culpeper-Prince William/Manassas/Manassas Park-
Fairfax-Arlington/Falls Church/Alexandria-Northern Fauquier-
Southern Fauquier-Eastern Loudoun-
156 PM EST Sat Feb 13 2021

...ICE STORM WARNING IN EFFECT UNTIL 7 AM EST SUNDAY...

* WHAT...Two to three tenths of an inch of sleet and freezing rain
  causing significant icing impacts.

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

* WHEN...Until 7 AM EST Sunday.

* IMPACTS...Difficult travel conditions.

* ADDITIONAL DETAILS...Roadways are becoming very icy and
  dangerous. Avoid all unnecessary travel.

NWS radio just issued ISW for DC and surroundings until 7 am.

38 minutes ago, real said:

It actually seems to be getting colder in downtown. Ice building up even on mulch and sidewalks that were just wet this morning are getting icy. If this continues into evening, could be really nasty here 

In Arlington, looks like a dusting of snow (or is it sleet??)) has fallen atop the ice and sleet, turning my driveway white. Sidewalks starting to go too, but the salted street is wet.

Arlington just re-salted The Hill of Doom.

I just put out the last easy-to-use snowmelt on the sidewalk leading up to my door.

A trace of ice on cartops, pavement still wet.

And a few bits of sleet bouncing.

New bunch of WWAs.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

Hardy-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 1 PM EST
SATURDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

* WHERE...Hardy County.

* WHEN...From 1 AM to 1 PM EST Saturday.


 - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

VAZ027-131000-

647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 7 PM EST
SATURDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

* WHERE...Shenandoah County.

* WHEN...From 1 AM to 7 PM EST Saturday.

 WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

VAZ030-131000-
/O.EXB.KLWX.WW.Y.0011.210213T0600Z-210214T1200Z/
Warren-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM SATURDAY TO 7 AM
EST SUNDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

* WHERE...Warren County.

* WHEN...From 1 AM Saturday to 7 AM EST Sunday.

 WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

MDZ501-WVZ050-501>504-131000-
/O.EXB.KLWX.WW.Y.0011.210213T1200Z-210213T1800Z/
Extreme Western Allegany-Hampshire-Western Grant-Eastern Grant-
Western Mineral-Eastern Mineral-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM TO 1 PM EST
SATURDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

* WHERE...Portions of western Maryland and eastern West Virginia.

* WHEN...From 7 AM to 1 PM EST Saturday.
WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

MDZ003>006-502-507-VAZ028-031-WVZ051>053-131000-
/O.EXB.KLWX.WW.Y.0011.210213T1200Z-210214T1200Z/
Washington-Frederick MD-Carroll-Northern Baltimore-
Central and Eastern Allegany-Northwest Harford-Frederick VA-
Clarke-Morgan-Berkeley-Jefferson-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM SATURDAY TO 7 AM
EST SUNDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

* WHERE...Portions of north central, northern and western
  Maryland, northwest Virginia and eastern West Virginia.

* WHEN...From 7 AM Saturday to 7 AM EST Sunday.

* WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

District of Columbia-Cecil-Southern Baltimore-Prince Georges-
Anne Arundel-Northwest Montgomery-
Central and Southeast Montgomery-Northwest Howard-
Central and Southeast Howard-Southeast Harford-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Northern Fauquier-
Western Loudoun-Eastern Loudoun-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 7 AM SATURDAY TO
7 AM EST SUNDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

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

* WHEN...From 7 AM Saturday to 7 AM EST Sunday.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

Augusta-Rockingham-Page-Greene-Eastern Highland-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 1 AM TO 7 PM EST
SATURDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

* WHERE...Greene, Eastern Highland, Augusta, Page and Rockingham
  Counties.

* WHEN...From 1 AM to 7 PM EST Saturday.

 WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

MDZ018-VAZ039-040-051-502-507-131000-
/O.EXT.KLWX.WW.Y.0011.210213T0600Z-210214T1200Z/
Calvert-Madison-Rappahannock-Culpeper-Southern Fauquier-
Northern Virginia Blue Ridge-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 1 AM SATURDAY TO
7 AM EST SUNDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to two tenths of
  an inch.

* WHERE...Portions of southern Maryland and northern and
  northwest Virginia.

* WHEN...From 1 AM Saturday to 7 AM EST Sunday.

 WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

Western Highland-Eastern Pendleton-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 1 AM TO 1 PM EST
SATURDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

* WHERE...In Virginia, Western Highland County. In West
  Virginia, Eastern Pendleton County.

* WHEN...From 1 AM to 1 PM EST Saturday.

 WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
647 PM EST Fri Feb 12 2021

WVZ505-131000-Western Pendleton-
647 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 7 AM TO 1 PM EST
SATURDAY...

* WHAT...Sleet and freezing rain. Total sleet accumulations of
  less than one inch and ice accumulations of up to one tenth of
  an inch.

* WHERE...Western Pendleton County.

* WHEN...From 7 AM to 1 PM EST Saturday.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
310 PM EST Fri Feb 12 2021

Cecil-Southern Baltimore-Northwest Montgomery-
Central and Southeast Montgomery-Northwest Howard-
Central and Southeast Howard-Southeast Harford-Augusta-Rockingham-
Page-Rappahannock-Northern Fauquier-Western Highland-
Eastern Highland-Western Loudoun-Eastern Loudoun-
Northern Virginia Blue Ridge-Western Pendleton-Eastern Pendleton-
310 PM EST Fri Feb 12 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM SATURDAY TO 7 AM
EST SUNDAY...

* WHAT...Freezing rain, mixed with sleet at times. Storm total
  ice accumulations up to one tenth of an inch.

* WHERE...Portions of central, northeast and northern Maryland,
  northern, northwest and western Virginia and eastern West
  Virginia.

* WHEN...From 10 AM Saturday to 7 AM EST Sunday.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
310 PM EST Fri Feb 12 2021

Nelson-Albemarle-Central Virginia Blue Ridge-
310 PM EST Fri Feb 12 2021

...WINTER STORM WARNING IN EFFECT FROM 7 AM SATURDAY TO 7 AM EST
SUNDAY...

* WHAT...Significant icing. Total ice accumulations of around a
  quarter of an inch.

* WHERE...Nelson and Albemarle Counties, and Central Virginia
  Blue Ridge.

* WHEN...From 7 AM Saturday to 7 AM EST Sunday.

Ice storm warning on NWS radio.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
310 PM EST Fri Feb 12 2021

MDZ016-017-VAZ050-055>057-130415-
/O.UPG.KLWX.WS.A.0006.210213T1200Z-210214T1200Z/
/O.NEW.KLWX.IS.W.0001.210213T1200Z-210214T1200Z/
Charles-St. Marys-Orange-Stafford-Spotsylvania-King George-
310 PM EST Fri Feb 12 2021

...ICE STORM WARNING IN EFFECT FROM 7 AM SATURDAY TO 7 AM EST
SUNDAY...

* WHAT...Significant icing. Storm total ice accumulations of
  around a quarter of an inch.

* WHERE...Portions of southern Maryland and north-central
  Virginia.

* WHEN...From 7 AM Saturday to 7 AM EST Sunday.

Just went out in Arlington VA to find up to 0.1" of sleet on top of my car.

13 hours ago, EHoffman said:

LOL no way...

I only so far got a trace on vehicles 100 feet up from DCA; they must be measuring every 15 minutes!

8 AM update: biggest flakes landing on cartops melting in about a minute.  Traces of snow trying to reaccumulate on windshield wipers.

((It's almost as if DCA got 0.7" so far by pre-freezing their snowboard...))

7 minutes ago, EHoffman said:

LOL no way...

I only so far got a trace on vehicles 100 feet up from DCA; they must be measuring every 15 minutes!

IMO, it's all about elevation plus distance from the Potomac.

I'm about 100 feet up from DCA.  Pixee may be as much as 300 feet up, maybe a bit further away from the Potomac, and Fort Reno is up around 400 feet.

So I wouldn't be surprised to see DCA get maybe an inch if generously measured, me an inch or so, and Pixee and Fort Reno get the 3 promised NWS inches.

That's ASS-U-MEing equal QPF.

Arlington County just brined The Hill of Doom.

Now if only they would do gutter-to-gutter brining...

Text:

Special Weather Statement
National Weather Service Baltimore MD/Washington DC
1127 AM EST Mon Feb 8 2021

DCZ001-MDZ013-014-016-503>506-VAZ052>057-501-502-505-506-090000-
District of Columbia-Prince Georges-Anne Arundel-Charles-
Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-
Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-
((snip))
1127 AM EST Mon Feb 8 2021

...POTENTIAL WINTER COMMUTING HAZARD FOR THE WASHINGTON AND
FREDERICKSBURG METROPOLITAN AREAS TUESDAY MORNING...

There is a potential for hazardous commuting conditions for the
Tuesday morning commute. A period of light freezing rain is
POSSIBLE (a 30 percent chance) Tuesday morning across the
Washington and Fredericksburg Metropolitan areas. A light glaze of
ice is possible on area roads.

If this threat does materialize during the Tuesday morning rush-
hour, many roads could quickly turn icy. This could lead to
dangerous traveling conditions, multiple accidents, and extensive
delays.

((snip))

LWX radio just announced potential commuting hazard for the Washington and Fredericksburg areas tomorrow morning.

As a warminista, I was pleasantly surprised by the big bust (0.1") a couple of miles west of DCA.  All I had to do was swipe the remaining slop off car windows. Easy on my back.

AT 900 in Arlington: 2.5" total with a thin ice layer, less than 0.1, on top.

Measured 1.9" in Arlington around 1 pm.

But visibility is back down to a half-mile.

And Arlington sent a sand truck this time up the Hill of Doom.

At about 9 am, 1.5 inches in Arlington.

My weather radio sounded the alarm once again for another expansion of winter storm warnings.

All of MD west of the bay is now under warnings.

And DC, much of VA except for SE of Richmond, and parts of WV.

New winter storm warnings have been posted.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Wakefield VA
319 PM EST Fri Jan 29 2021

VAZ048-061-062-064-068-069-509>517-519-521-300430-
/O.NEW.KAKQ.WS.A.0001.210131T0300Z-210201T0000Z/
Fluvanna-Cumberland-Goochland-Caroline-Amelia-Powhatan-
Western Louisa-Eastern Louisa-Western Hanover-Eastern Hanover-
Western Chesterfield-
Eastern Chesterfield (Including Col. Heights)-
Western Henrico (Including the City of Richmond)-Eastern Henrico-
Western King William-Western King and Queen-Western Essex-
Including the cities of Bybee, Central Plains, Cunningham,
Lake Monticello, Nahor, Palmyra, Troy, Angola, Guinea Mills,
Hawk, Raines Tavern, Reeds, Stoddert, Goochland, Corbin,
Burruss Corner, Cedar Fork, Dawn, Earls, Mannboro, Scotts Fork,
Amelia Courthouse, Chula, Denaro, Jetersville, Fine Creek Mills,
Flat Rock, Goodwins Store, Subletts, Worshams, Clayville, Genito,
Louisa, Mineral, Ashland, Mechanicsville, Bon Air, Midlothian,
Chesterfield, Chester, Colonial Heights, Richmond, Sandston,
Aylett, Beazley, Biscoe, Henley Fork, Indian Neck, Newtown,
Owenton, Saint Stephens Church, and Tappahannock
319 PM EST Fri Jan 29 2021

...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH
SUNDAY EVENING...

* WHAT...Heavy snow possible. Total snow accumulations of 2 to 5
  inches possible. In addition, sleet and freezing rain may
  result in ice accumulations.

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

* WHEN...From late Saturday evening through Sunday evening.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...A Winter Storm Watch means there is a
  potential for significant snow...sleet...or ice accumulations
  that may impact travel.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Wakefield VA
319 PM EST Fri Jan 29 2021

MDZ021-022-VAZ075>078-300430-
/O.NEW.KAKQ.WS.A.0001.210131T1200Z-210201T0600Z/
Dorchester-Wicomico-Westmoreland-Richmond-Northumberland-
Lancaster-
Including the cities of Cambridge, Salisbury, Sandy Point,
Westmoreland, Colonial Beach, Leedstown, Oak Grove,
Potomac Beach, Potomac Mills, Naylors Beach, Downing, Emmerton,
Ethel, Farnham, Haynesville, Kennard, Lewisetta, Alfonso,
Beanes Corner, Brook Vale, Kilmarnock, Lancaster, Lively,
and Regina
319 PM EST Fri Jan 29 2021

...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE
SUNDAY NIGHT...

* WHAT...Heavy snow possible. Total snow accumulations of 2 to 3
  inches possible.

* WHERE...Portions of southeast Maryland and east central and
  eastern Virginia.

* WHEN...From Sunday morning through late Sunday night.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...A Winter Storm Watch means there is a
  potential for significant snow...sleet...or ice accumulations
  that may impact travel.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

http://www.weather.gov/akq

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
312 PM EST Fri Jan 29 2021

...Wintry Mix LIkely Saturday Night through Sunday...

.A winter storm will impact the region beginning Saturday night
through at least Sunday night. Precipitation will change from
snow, to sleet, to freezing rain, and possibly back to snow or
rain throughout the event. This wintry mix will make travel
difficult and dangerous.

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-300800-
/O.NEW.KRNK.WS.A.0002.210131T0300Z-210201T0300Z/
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-
Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Roanoke-Botetourt-
Rockbridge-Patrick-Franklin-Bedford-Amherst-Henry-Pittsylvania-
Campbell-Appomattox-Buckingham-Halifax-Charlotte-Mercer-Summers-
Monroe-Eastern Greenbrier-Western Greenbrier-
Including the cities of West Jefferson, Sparta, Dobson, Danbury,
Eden, Yanceyville, Boone, Wilkesboro, Yadkinville, Tazewell,
Marion, Bland, Pearisburg, Wytheville, Radford, Pulaski,
Blacksburg, Independence, Whitetop, Troutdale, Volney, Galax,
Floyd, New Castle, Clifton Forge, Covington, Hot Springs,
Roanoke, Salem, Fincastle, Lexington, Buena Vista, Stuart,
Rocky Mount, Amherst, Martinsville, Danville, Lynchburg,
Appomattox, South Boston, Keysville, Bluefield, Hinton, Hix,
Union, Lewisburg, White Sulphur Springs, Quinwood, Duo,
and Rainelle
312 PM EST Fri Jan 29 2021

...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH
SUNDAY EVENING...

* WHAT...Heavy mixed precipitation possible. Total snow
  accumulations of up to 6 inches and ice accumulations of a
  light glaze possible.

* WHERE...Portions of central, south central, southwest and west
  central Virginia, north central and northwest North Carolina
  and southeast West Virginia.

* WHEN...From Saturday evening through Sunday evening.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is a potential for significant
snow...sleet...or ice accumulations that may impact travel.
Monitor the latest forecasts for updates on this situation.

SHH

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
310 PM EST Fri Jan 29 2021

VAZ025-026-036-037-503-504-508-WVZ505-506-300415-
/O.NEW.KLWX.WS.A.0002.210131T0300Z-210201T0300Z/
Augusta-Rockingham-Nelson-Albemarle-Western Highland-
Eastern Highland-Central Virginia Blue Ridge-Western Pendleton-
Eastern Pendleton-
310 PM EST Fri Jan 29 2021

...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY EVENING
THROUGH SUNDAY EVENING...

* WHAT...Heavy snow possible. Potential for 5 or more inches of
  snow.

* WHERE...Portions of central Virginia, the central Shenandoah
  Valley, as well as Highland County in Virginia and Pendleton
  County in West Virginia.

* WHEN...From late Saturday evening through Sunday evening.

* IMPACTS...Travel could be very difficult.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Charleston WV
223 PM EST Fri Jan 29 2021

WVZ516-518-520-522>526-300330-
/O.NEW.KRLX.WS.A.0001.210131T0300Z-210201T1800Z/
Southeast Raleigh-Southeast Fayette-Southeast Nicholas-
Southeast Webster-Northwest Pocahontas-Southeast Pocahontas-
Northwest Randolph-Southeast Randolph-
Including the cities of Beckley, Meadow Bridge, Richwood,
Snowshoe, Marlinton, Elkins, and Harman
223 PM EST Fri Jan 29 2021

...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH
MONDAY AFTERNOON...

* WHAT...Heavy mixed precipitation possible. Total snow
  accumulations of 3 to 5 inches and ice accumulations of around
  one tenth of an inch possible.

* WHERE...Portions of northeast and southeast West Virginia.

* WHEN...From Saturday evening through Monday afternoon.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...Ice accumulations will be mainly confined
  to the highest ridges, especially along their upper eastern
  slopes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.