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arlwx

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  1. Got almost an hour of strong rain near Crystal City, till some rain and thunder about. The rain gauge at Four Mile run picked up about an inch of rain in 40 minutes. update: At 7:52 pm, DCA recorded 1.37 inches of rain during the hour of the event.
  2. arlwx

    May Discobs Thread

    Here we go again... SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 88 NWS STORM PREDICTION CENTER NORMAN OK 1230 PM EDT MON MAY 14 2018 SEVERE THUNDERSTORM WATCH 88 IS IN EFFECT UNTIL 900 PM EDT FOR THE FOLLOWING LOCATIONS DCC001-150100- /O.NEW.KWNS.SV.A.0088.180514T1630Z-180515T0100Z/ DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA $$ SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 88 NWS STORM PREDICTION CENTER NORMAN OK 1230 PM EDT MON MAY 14 2018 SEVERE THUNDERSTORM WATCH 88 IS IN EFFECT UNTIL 900 PM EDT FOR THE FOLLOWING LOCATIONS MDC001-003-005-009-013-017-021-023-025-027-031-033-037-043-510- 150100- /O.NEW.KWNS.SV.A.0088.180514T1630Z-180515T0100Z/ MD . MARYLAND COUNTIES INCLUDED ARE ALLEGANY ANNE ARUNDEL BALTIMORE CALVERT CARROLL CHARLES FREDERICK GARRETT HARFORD HOWARD MONTGOMERY PRINCE GEORGES ST. MARYS WASHINGTON MARYLAND INDEPENDENT CITIES INCLUDED ARE BALTIMORE CITY $$ SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 88 NWS STORM PREDICTION CENTER NORMAN OK 1230 PM EDT MON MAY 14 2018 SEVERE THUNDERSTORM WATCH 88 IS IN EFFECT UNTIL 900 PM EDT FOR THE FOLLOWING LOCATIONS PAC001-003-005-007-009-013-019-021-041-051-055-057-059-061-063- 067-087-099-111-125-129-133-150100- /O.NEW.KWNS.SV.A.0088.180514T1630Z-180515T0100Z/ PA . PENNSYLVANIA COUNTIES INCLUDED ARE ADAMS ALLEGHENY ARMSTRONG BEAVER BEDFORD BLAIR BUTLER CAMBRIA CUMBERLAND FAYETTE FRANKLIN FULTON GREENE HUNTINGDON INDIANA JUNIATA MIFFLIN PERRY SOMERSET WASHINGTON WESTMORELAND YORK $$ SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 88 NWS STORM PREDICTION CENTER NORMAN OK 1230 PM EDT MON MAY 14 2018 SEVERE THUNDERSTORM WATCH 88 IS IN EFFECT UNTIL 900 PM EDT FOR THE FOLLOWING LOCATIONS VAC003-013-015-043-047-059-061-069-079-091-099-107-113-125-137- 139-153-157-165-171-177-179-187-510-540-600-610-630-660-683-685- 790-820-840-150100- /O.NEW.KWNS.SV.A.0088.180514T1630Z-180515T0100Z/ VA . VIRGINIA COUNTIES INCLUDED ARE ALBEMARLE ARLINGTON AUGUSTA CLARKE CULPEPER FAIRFAX FAUQUIER FREDERICK GREENE HIGHLAND KING GEORGE LOUDOUN MADISON NELSON ORANGE PAGE PRINCE WILLIAM RAPPAHANNOCK ROCKINGHAM SHENANDOAH SPOTSYLVANIA STAFFORD WARREN VIRGINIA INDEPENDENT CITIES INCLUDED ARE ALEXANDRIA CHARLOTTESVILLE FAIRFAX FALLS CHURCH FREDERICKSBURG HARRISONBURG MANASSAS MANASSAS PARK STAUNTON WAYNESBORO WINCHESTER $$ SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 88 NWS STORM PREDICTION CENTER NORMAN OK 1230 PM EDT MON MAY 14 2018 SEVERE THUNDERSTORM WATCH 88 IS IN EFFECT UNTIL 900 PM EDT FOR THE FOLLOWING LOCATIONS WVC001-003-007-009-013-017-021-023-027-031-033-037-041-049-051- 057-061-065-069-071-073-075-077-083-085-091-093-095-097-101-103- 105-107-150100- /O.NEW.KWNS.SV.A.0088.180514T1630Z-180515T0100Z/ WV . WEST VIRGINIA COUNTIES INCLUDED ARE BARBOUR BERKELEY BRAXTON BROOKE CALHOUN DODDRIDGE GILMER GRANT HAMPSHIRE HARDY HARRISON JEFFERSON LEWIS MARION MARSHALL MINERAL MONONGALIA MORGAN OHIO PENDLETON PLEASANTS POCAHONTAS PRESTON RANDOLPH RITCHIE TAYLOR TUCKER TYLER UPSHUR WEBSTER WETZEL WIRT WOOD $$ SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 88 NWS STORM PREDICTION CENTER NORMAN OK 1230 PM EDT MON MAY 14 2018 SEVERE THUNDERSTORM WATCH 88 IS IN EFFECT UNTIL 900 PM EDT FOR THE FOLLOWING LOCATIONS ANZ530-531-532-533-534-535-536-537-538-539-540-541-542-543- 150100- /O.NEW.KWNS.SV.A.0088.180514T1630Z-180515T0100Z/ CW . ADJACENT COASTAL WATERS INCLUDED ARE CHESAPEAKE BAY NORTH OF POOLES ISLAND MD CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA PATAPSCO RIVER INCLUDING BALTIMORE HARBOR CHESTER RIVER TO QUEENSTOWN MD EASTERN BAY CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER PATUXENT RIVER TO BROOMES ISLAND MD TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND $$ ATTN...WFO...LWX...RLX...PBZ...CTP...
  3. arlwx

    April Discobs Thread

    At 5 am: DCA 37 BWI 34 IAD 32 The local icebox (Fort Meade) is down to 30. Most of Central VA (north of CHO-RIC) has hit freezing. The Shenandoah Valley is flirting with damaging the apple blossoms.
  4. arlwx

    April Discobs Thread

    Freeze watch up for tonight in the DC suburbs. URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 408 AM EDT Tue Apr 17 2018 MDZ003>006-503>507-VAZ036>040-050>053-501-502-505-506-171615- /O.NEW.KLWX.FZ.A.0002.180418T0600Z-180418T1300Z/ Washington-Frederick MD-Carroll-Northern Baltimore- Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper- Prince William/Manassas/Manassas Park-Fairfax-Northern Fauquier- Southern Fauquier-Western Loudoun-Eastern Loudoun- Including the cities of Hagerstown, Frederick, Ballenger Creek, Eldersburg, Westminster, Reisterstown, Cockeysville, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville, Lovingston, Charlottesville, Stanardsville, Madison, Washington, Orange, Gordonsville, Culpeper, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Warrenton, Turnbull, Purcellville, Leesburg, Ashburn, and Sterling 408 AM EDT Tue Apr 17 2018 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... The National Weather Service in Baltimore MD/Washington has issued a Freeze Watch, which is in effect from late tonight through Wednesday morning. * TEMPERATURES...32 degrees or less. * IMPACTS...Frost and freeze conditions may damage sensitive vegetation. Take steps now to protect tender plants from the cold.
  5. arlwx

    April Discobs Thread

    Meanwhile, the apples may get frozen tonight. Washington-Frederick MD-Carroll-Augusta-Rockingham-Shenandoah- Frederick VA-Page-Warren-Clarke-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Morgan-Berkeley-Jefferson- Including the cities of Hagerstown, Frederick, Ballenger Creek, Eldersburg, Westminster, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Strasburg, Woodstock, Mount Jackson, New Market, Winchester, Luray, Shenandoah, Stanley, Front Royal, Berryville, Big Meadows, Wintergreen, Paw Paw, Martinsburg, Charles Town, and Shepherdstown 429 AM EDT Mon Apr 16 2018 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... The National Weather Service in Baltimore MD/Washington has issued a Freeze Watch, which is in effect from late tonight through Tuesday morning. * TEMPERATURES...32 degrees or below. * IMPACTS...Frost and freeze conditions may damage sensitive vegetation. Take steps now to protect tender plants from the cold.
  6. arlwx

    April Discobs Thread

    DCA picked up 1.45 in two hours at 4 am. The gauge at Four Mile Run says it got about 1.6 inches in that period. Cameron Run briefly exceeded flood stage (are there any fish on the Beltway?) Accotink Creek IS above flood stage (Woodyard Road is blocked at the stream) People using the express lanes on I-95/I-395 are being forced back onto the northbound main lanes because of standing water. I-66 east: people are diverted off at exit 72. I-66 west-bound: From DC, people get diverted into Rosslyn. I-295 Northbound: high standing water under Benning Road. GW parkway northbound from Old Town: Blocked/diverted at the marina south of DCA (use Rt 1 to get to DCA instead) More in MD (including lanes blocked on I-495 and the BW parkway)
  7. arlwx

    March 20-21 Storm Banter and Party Thread

    WHO ordered this s*** on the day before I was scheduled to attend training??? Fortunately, they offered to let me have credit towards future training. This is TWICE this calendar year that the weather has messed with my training, but the first time it was to be free CPE.
  8. At 10 am, I got 1.4" in Arlington VA on top of a truck. Heavy wet snow, probably some compaction in just the two hours since it started sticking.
  9. arlwx

    March 20-21 Storm Banter and Party Thread

    As a warminista: Snow belongs in Febrrary. Early school closings upcoming.
  10. At 12:10 PM in the Crystal City area: Rain mixed with bits of sleet Car indicating 33 degrees.
  11. arlwx

    March 20-21 Potential - STORM MODE THREAD

    LWX is implying that the mountains get warnings about storm 1 and everyone is on watch for storm 2.
  12. arlwx

    March 20-21 Potential - STORM MODE THREAD

    New WSWs up. URGENT - WINTER WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 429 AM EDT Tue Mar 20 2018 MDZ003-VAZ028-WVZ051-052-201630- /O.UPG.KLWX.WW.Y.0018.180320T1000Z-180320T2200Z/ /O.EXB.KLWX.WS.W.0006.180320T1000Z-180321T0000Z/ /O.CON.KLWX.WS.A.0004.180321T0400Z-180322T0000Z/ Washington-Frederick VA-Morgan-Berkeley- 429 AM EDT Tue Mar 20 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY EVENING... * WHAT...Mixed precipitation changing to snow this morning, which could be heavy at times. Snow accumulations of 4 to 6 inches are expected today, along with a light glaze of ice. Additional heavy snow is possible late tonight through Wednesday afternoon, with additional snow accumulations of 5 or more inches possible. * WHERE...In Maryland, Washington. In Virginia, Frederick. In West Virginia, Morgan and Berkeley. * WHEN...For the Winter Storm Warning, until 8 PM EDT this evening. For the Winter Storm Watch, from late tonight through Wednesday evening. * ADDITIONAL DETAILS...Plan on difficult travel conditions. Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. && $$ URGENT - WINTER WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 429 AM EDT Tue Mar 20 2018 MDZ501-502-WVZ050-055-501>504-201630- /O.CON.KLWX.WS.W.0006.180320T0900Z-180321T0000Z/ /O.CON.KLWX.WS.A.0004.180321T0000Z-180321T2100Z/ Extreme Western Allegany-Central and Eastern Allegany-Hampshire- Hardy-Western Grant-Eastern Grant-Western Mineral-Eastern Mineral- 429 AM EDT Tue Mar 20 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY AFTERNOON... * WHAT...Heavy snow expected today with snow accumulations of 5 to 10 inches. Additional heavy snow is possible from Tuesday evening through Wednesday afternoon, with additional snow accumulations of 5 or more inches possible. * WHERE...Portions of western Maryland and eastern West Virginia. * WHEN...For the Winter Storm Warning, until 8 PM EDT this evening. For the Winter Storm Watch, from this evening through Wednesday afternoon. * ADDITIONAL DETAILS...Plan on difficult travel conditions. Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. &&
  13. arlwx

    March 1-2 wind event

    In the DC area, that is.
  14. arlwx

    March 1-2 wind event

    Here in Arlington, lost power around 2:30, just now got it back. WTOP is reporting on downed trees.
  15. arlwx

    PD3.5 Lite Obs and Nowcasting

    DCA claims it got .42 in precip, but only about .23 of that was listed as snow (actually quite a bit of sleet). So I believe DCA measuring 0.2 snow. At 100 feet here in Arlington, I got a cartopping of sleet, but it looks like the follow-on rain washed that away. DCA stayed at 34 during the snow/sleet part, but sometimes I go out at that temperature and find slick spots. So I believe the measurement of 1.0, map showing it as Grace Hopper Park. (possibly grass/decorator snow).
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