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2023 Mid-Atlantic Severe Wx Thread (General Discussion)


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Just now, Always in Zugzwang said:

I'd think it's a good call for just about any "evening activities" anywhere to just postpone or cancel, just out of caution at least.

It absolutely is. I was anxious about just having to travel later in it, having a safe place at the studio should we need to shelter, and all that. Just too many moving parts when people are coming from multiple areas to the studio for classes. Not worth all that risk. 

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2 minutes ago, mappy said:

It absolutely is. I was anxious about just having to travel later in it, having a safe place at the studio should we need to shelter, and all that. Just too many moving parts when people are coming from multiple areas to the studio for classes. Not worth all that risk. 

I would NOT want to be driving around in severe situations like that, branches all over, wind, no visibility.  Heck, I happened to be out last Saturday during those big storms that went through and it was no fun driving in that, totally white-knuckled it with the steering wheel!

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Just now, biodhokie said:

Just got an OPM alert of all federal employees to depart no later than 3 PM

https://www.opm.gov/policy-data-oversight/snow-dismissal-procedures/current-status/

Status: Early Departure - 2 hours Staggered Release - All Employees Must Depart No Later Than 3:00

Employees of Federal agencies in the Washington, DC area are authorized for Early Departure. Employees should depart 2 hours earlier than their normal departure time and may request Unscheduled Leave to depart prior to their staggered departure time. All employees Must Depart no later than 3:00 at which time Federal offices are Closed.

Telework Employees at the Office will receive weather and safety leave only for the amount of time required to commute home. Once these employees arrive at home, they must complete any remaining portion of the workday by teleworking, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.

Telework Employees Performing Telework are expected to continue working and generally may not receive weather and safety leave. They must account for the entire workday by teleworking, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.

Remote Workers are expected to continue working and generally may not receive weather and safety leave. They must account for the entire workday by working, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.

Non-Telework Employees at the Office will be dismissed from their office 2 hours early relative to their normal departure time but no later than the final departure time 3:00 (as applicable) and will be granted weather and safety leave for the number of hours remaining in their workday.

Emergency Employees are expected to remain at their worksite unless otherwise directed by their agencies.

Employees Departing the Office Prior to Their Early Departure Time or the Final Departure Time (whichever is applicable) may request to use unscheduled leave (paid or unpaid) or other paid time off. Such employees will not be granted weather and safety leave for any part of the workday.

Employees on Preapproved Leave (paid or unpaid) or other paid time off-including an employee who has requested unscheduled leave before an early departure policy is announced-generally should continue to be charged leave or other paid time off during the scheduled time and should not receive weather and safety leave.

(Posted on August 7, 2023 at 1:00 PM)

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Maryland down into north-central Virginia seems pretty ripe. Another area (just outside of the moderate risk is western North Carolina). But from Maryland down into north-central Virginia, mesonalysis indicates a large area of 2000 J/KG of MLCAPE with RAP developing as much as 2500 ahead of the line of approaching storms. 2-6km lapse rates around 7.5 C/KM with llvl lapse rates 8-8.5 C/KM. These are big wind signals, especially with DCAPE values up around 1200 J/KG with large 3km CAPE overspreading this area too. Increasing ulvl jet with approaching jet streak should result in rapidly increasing ulvl divergence too over the next hour. This stuff is really going to take off as it moves from West Virginia into Maryland and north-central Virginia. 

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1 minute ago, yoda said:

https://www.opm.gov/policy-data-oversight/snow-dismissal-procedures/current-status/

Status: Early Departure - 2 hours Staggered Release - All Employees Must Depart No Later Than 3:00

Employees of Federal agencies in the Washington, DC area are authorized for Early Departure. Employees should depart 2 hours earlier than their normal departure time and may request Unscheduled Leave to depart prior to their staggered departure time. All employees Must Depart no later than 3:00 at which time Federal offices are Closed.

Telework Employees at the Office will receive weather and safety leave only for the amount of time required to commute home. Once these employees arrive at home, they must complete any remaining portion of the workday by teleworking, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.

Telework Employees Performing Telework are expected to continue working and generally may not receive weather and safety leave. They must account for the entire workday by teleworking, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.

Remote Workers are expected to continue working and generally may not receive weather and safety leave. They must account for the entire workday by working, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.

Non-Telework Employees at the Office will be dismissed from their office 2 hours early relative to their normal departure time but no later than the final departure time 3:00 (as applicable) and will be granted weather and safety leave for the number of hours remaining in their workday.

Emergency Employees are expected to remain at their worksite unless otherwise directed by their agencies.

Employees Departing the Office Prior to Their Early Departure Time or the Final Departure Time (whichever is applicable) may request to use unscheduled leave (paid or unpaid) or other paid time off. Such employees will not be granted weather and safety leave for any part of the workday.

Employees on Preapproved Leave (paid or unpaid) or other paid time off-including an employee who has requested unscheduled leave before an early departure policy is announced-generally should continue to be charged leave or other paid time off during the scheduled time and should not receive weather and safety leave.

(Posted on August 7, 2023 at 1:00 PM)

Wow...when's the last time there was an emergency departure for severe weather around here?  I know there have been several in the past for winter weather.

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BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Baltimore MD/Washington DC
211 PM EDT Mon Aug 7 2023

The National Weather Service in Sterling Virginia has issued a

* Severe Thunderstorm Warning for...
  Southwestern Allegany County in western Maryland...
  Northeastern Garrett County in western Maryland...
  Central Mineral County in eastern West Virginia...

* Until 300 PM EDT.

* At 210 PM EDT, a severe thunderstorm was located near Westernport,
  moving east at 35 mph.

  THIS IS A DESTRUCTIVE STORM FOR PORTIONS OF SOUTHWESTERN ALLEGANY
  COUNTY, FAR EASTERN GARRETT, AND NORTHERN MINERAL COUNTIES..

  HAZARD...80 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable damage to trees and power lines. Your
           life is at significant risk if outdoors. In addition to
           some trees falling into homes, wind damage is possible to
           roofs, sheds, open garages, and mobile homes.

* Locations impacted include...
  Westernport, Bel Air, Lonaconing, Piedmont, Cresaptown, Rawlings,
  Barton, Midland, Franklin, Woodland, Luke, Merrill, Dogwood Flats
  and Reynolds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 PM EDT for western
Maryland...and eastern West Virginia.

This storm is producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows!
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15 minutes ago, Always in Zugzwang said:

I'd think it's a good call for just about any "evening activities" anywhere to just postpone or cancel, just out of caution at least.

The oldest kid just got an email from American U. She is not in summer classes but the email was to tell students on campus that things are shutting early today due to inclement weather. 

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I think this is the QLCS/bow echo starting

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Baltimore MD/Washington DC
229 PM EDT Mon Aug 7 2023

The National Weather Service in Sterling Virginia has issued a

* Severe Thunderstorm Warning for...
  Northwestern Washington County in north central Maryland...
  Northeastern Allegany County in western Maryland...
  North central Frederick County in northwestern Virginia...
  Morgan County in the Panhandle of West Virginia...
  Northeastern Mineral County in eastern West Virginia...
  Northeastern Hampshire County in eastern West Virginia...

* Until 315 PM EDT.

* At 228 PM EDT, severe thunderstorms were located along a line
  extending from Lake Gordon to near Fort Ashby to 6 miles east of
  Keyser, moving east at 50 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Emergency management has reported substantial wind damage
           across Garrett and western Allegheny counties.

  IMPACT...Damaging winds will cause some trees and large branches
           to fall. This could injure those outdoors, as well as
           damage homes and vehicles. Roadways may become blocked by
           downed trees. Localized power outages are possible.
           Unsecured light objects may become projectiles.

* Locations impacted include...
  Hancock, Paw Paw, Greenwood, Berkeley Springs, Springfield, Great
  Cacapon, Green Spring, Oldtown, Little Orleans, Johnsons Mill,
  Valley View, Fishers Bridge, Spohrs Crossroads, Pumpkin Center,
  Oakland, Rock Gap, Points, Smith Crossroads, Unger and New Hope.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 PM EDT for western and
north central Maryland...northwestern Virginia...and eastern and the
Panhandle of West Virginia.

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature`s leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

A Tornado Watch remains in effect until 900 PM EDT for western and
north central Maryland...northwestern Virginia...and eastern and the
Panhandle of West Virginia.

&&

LAT...LON 3972 7809 3942 7822 3941 7879 3972 7848
TIME...MOT...LOC 1828Z 257DEG 43KT 3976 7870 3953 7872 3945 7887

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
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