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July Discobs 2019


George BM
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.65 here so far with some of the loudest thunder in a couple years. Some booms were similiar to the vibrations from the Proving Grounds. China and glassware vibrating and rattling.

The winds before the line hit I estimate near 50 mph. Deck chairs sent airborne and the weeping cherry was really swaying, heard some cracks but did not see any fallen trees, but is was pretty bad for about 10 minutes with the winds at the very beginning.  

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38mph peak gust.  Looked worse on the cameras. 
Loud booms, no real close lightning. (at the house)
Was driving through first cell that popped up just south of Jarrettsville and had a really close bolt.  Did not see the bolt but the inside of my truck lit up like a 100 joule flash gun was fired and thunder accompanied simultaneously.  Felt it in my back like a subwoofer was playing.  Got home a few min later and it sounded like Forest Hill was getting bombed!  Probably the best sounding thunder since August 18, 2017 here.

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URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
322 AM EDT Thu Jul 18 2019

DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ052>057-501-502-
505-506-181530-
/O.CAN.KLWX.EH.A.0001.190719T1500Z-190720T0100Z/
/O.EXT.KLWX.EH.A.0002.190719T1400Z-190722T0200Z/
District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-
Calvert-Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Southeast Harford-Prince William/Manassas/Manassas Park-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-
King George-Northern Fauquier-Southern Fauquier-Western Loudoun-
Eastern Loudoun-
Including the cities of Washington, Frederick, Ballenger Creek,
Eldersburg, Westminster, Reisterstown, Cockeysville, Baltimore,
Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt,
Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate,
Severna Park, Arnold, Odenton, St. Charles, Waldorf,
Lexington Park, California, Chesapeake Beach, Huntingtown,
Dunkirk, North Beach, Lusby, Prince Frederick, Germantown,
Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring,
Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen,
Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston,
Herndon, Annandale, Centreville, Chantilly, McLean, Franconia,
Arlington, Alexandria, Falls Church, Falmouth, Fredericksburg,
Dahlgren, Warrenton, Turnbull, Purcellville, Leesburg, Ashburn,
and Sterling
322 AM EDT Thu Jul 18 2019

...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM FRIDAY MORNING THROUGH
SUNDAY EVENING...

* HEAT INDEX VALUES...Potentially 110 to 115 degrees each
  afternoon. Heat indices will likely remain between 80 and 90
  each night, greatly increasing the potential for heat related
  illnesses.

* IMPACTS...Dangerously high temperatures and humidity could
  quickly cause heat stress or heat stroke to those outside or
  without access to air conditioning.
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URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
322 AM EDT Thu Jul 18 2019

MDZ003-VAZ031-WVZ051>053-181530-
/O.CAN.KLWX.EH.A.0001.190719T1500Z-190720T0100Z/
/O.EXT.KLWX.EH.A.0002.190719T1400Z-190722T0200Z/
Washington-Clarke-Morgan-Berkeley-Jefferson-
Including the cities of Hagerstown, Berryville, Paw Paw,
Martinsburg, Charles Town, and Shepherdstown
322 AM EDT Thu Jul 18 2019

...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM FRIDAY MORNING THROUGH
SUNDAY EVENING...

* HEAT INDEX VALUES...Potentially 105 to 110 degrees each
  afternoon. Heat indices will likely remain around 80 each
  night, greatly increasing the risk for heat related illnesses.

* IMPACTS...Dangerously high temperatures and humidity could
  quickly cause heat stress or heat stroke to those outside or
  without access to air conditioning.
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URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
322 AM EDT Thu Jul 18 2019

VAZ028-030-181530-
/O.EXB.KLWX.EH.A.0002.190719T1400Z-190722T0200Z/
Frederick VA-Warren-
Including the cities of Winchester and Front Royal
322 AM EDT Thu Jul 18 2019

...EXCESSIVE HEAT WATCH IN EFFECT FROM FRIDAY MORNING THROUGH
SUNDAY EVENING...

The National Weather Service in Baltimore MD/Washington has
issued an Excessive Heat Watch, which is in effect from Friday
morning through Sunday evening.

* HEAT INDEX VALUES...Potentially 105 to 110 degrees each
  afternoon. Heat indices will likely remain around 80 each
  night, greatly increasing the risk for heat related illnesses.

* IMPACTS...Dangerously high temperatures and humidity could
  quickly cause heat stress or heat stroke to those outside or
  without access to air conditioning.
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22 minutes ago, dailylurker said:

My point and click forecast calls for rain and storms later today. Models are like "what rain". I guess I'll be dragging the garden hose around this evening. 

Yeah. I saw that. Between 11am and 2pm and the radar is as clear as the skies above. almost looks promising.

 

Edit: 

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