Alert archive / Virginia / Wind Advisories in 2017
Wind Advisory 17, NWS Baltimore/Washington
NWS Baltimore/Washington issued this wind advisory at Nov 18, 2017, 3:40 AM EST for 14 counties in Maryland; 26 counties in Virginia; 8 counties in West Virginia. It took effect at Nov 18, 2017, 4:00 PM EST. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Nov 18, 2017, 3:40 AM EST (08:40 UTC)
- In effect from
- Nov 18, 2017, 4:00 PM EST
- Expired
- Nov 19, 2017, 12:59 PM EST
- In force
- 21 hr
- Issued by
- NWS Baltimore/Washington
All 48 counties
Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Saint Mary's County, MD, Washington County, MD, Albemarle County, VA, Amherst County, VA, Arlington County, VA, Augusta County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, Loudoun County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV, Pendleton County, WV
The radar
The Sterling radar (KLWX), 46 km from the middle of the area, began a volume at 08:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 8.7 hours before the alert went out and 53 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2309 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
023 WWUS71 KLWX 180840 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 340 AM EST Sat Nov 18 2017 MDZ501-VAZ025-026-503-504-507-508-WVZ501-503-505-506-181645- /O.NEW.KLWX.WI.Y.0017.171118T2100Z-171119T1700Z/ Extreme Western Allegany-Augusta-Rockingham-Western Highland- Eastern Highland-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Western Grant-Western Mineral- Western Pendleton-Eastern Pendleton- Including the cities of Frostburg, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Hightown, Monterey, Big Meadows, Wintergreen, Bayard, Mount Storm, Elk Garden, Riverton, Brandywine, Franklin, Oak Flat, Ruddle, and Sugar Grove 340 AM EST Sat Nov 18 2017 ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO NOON EST SUNDAY... The National Weather Service in Baltimore MD/Washington has issued a Wind Advisory, which is in effect from 4 PM this afternoon to noon EST Sunday. * TIMING...late this afternoon through Sunday morning for elevations above 2000 feet. * WINDS...Southwest 20 to 35 mph with gusts around 50 mph through midnight tonight...becoming northwest early Sunday morning. * IMPACTS...Scattered tree and power line damage. Difficulty driving high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$
8 follow-up statements
931 WWUS71 KLWX 181517 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1017 AM EST Sat Nov 18 2017 MDZ501-VAZ025-026-503-504-507-508-WVZ501-503-505-506-182330- /O.CON.KLWX.WI.Y.0017.171118T2100Z-171119T1700Z/ Extreme Western Allegany-Augusta-Rockingham-Western Highland- Eastern Highland-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Western Grant-Western Mineral- Western Pendleton-Eastern Pendleton- Including the cities of Frostburg, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Hightown, Monterey, Big Meadows, Wintergreen, Bayard, Mount Storm, Elk Garden, Riverton, Brandywine, Franklin, Oak Flat, Ruddle, and Sugar Grove 1017 AM EST Sat Nov 18 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO NOON EST SUNDAY... * TIMING...late this afternoon through Sunday morning for elevations above 2000 feet. * WINDS...Southwest 20 to 35 mph with gusts around 50 mph through midnight tonight...becoming northwest early Sunday morning. * IMPACTS...Scattered tree and power line damage. Difficulty driving high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$
452 WWUS71 KLWX 181836 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 136 PM EST Sat Nov 18 2017 DCZ001-MDZ003>006-011-013-014-016>018-502>508-VAZ027>031-040- 052>054-501-505-506-WVZ050>053-055-502-504-191100- /O.EXB.KLWX.WI.Y.0017.171119T0900Z-171119T2000Z/ District of Columbia-Washington-Frederick MD-Carroll- Northern Baltimore-Southern Baltimore-Prince Georges-Anne Arundel- Charles-St. Marys-Calvert-Central and Eastern Allegany- Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Southeast Harford-Shenandoah-Frederick VA-Page-Warren-Clarke- Rappahannock-Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Loudoun-Eastern Loudoun-Hampshire-Morgan-Berkeley- Jefferson-Hardy-Eastern Grant-Eastern Mineral- Including the cities of Washington, Hagerstown, 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, Cumberland, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen, Strasburg, Woodstock, Mount Jackson, New Market, Winchester, Luray, Shenandoah, Stanley, Front Royal, Berryville, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Warrenton, Purcellville, Leesburg, Ashburn, Sterling, Romney, Paw Paw, Martinsburg, Charles Town, Shepherdstown, Moorefield, Petersburg, Antioch, Keyser, New Creek, Ridgeville, Russelldale, Headsville, and Fort Ashby 136 PM EST Sat Nov 18 2017 ...WIND ADVISORY IN EFFECT FROM 4 AM TO 3 PM EST SUNDAY... The National Weather Service in Baltimore MD/Washington has issued a Wind Advisory, which is in effect from 4 AM to 3 PM EST Sunday. * TIMING...An initial burst of strong winds may occur with the passage of a strong cold front late tonight. Winds may diminish and then increase again, peaking mid-late morning Sunday before diminishing for a final time Sunday afternoon. * WINDS...West 25 to 35 mph with gusts up to 50 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$ MDZ501-VAZ025-026-503-504-507-508-WVZ501-503-505-506-191100- /O.EXT.KLWX.WI.Y.0017.171118T2100Z-171119T2000Z/ Extreme Western Allegany-Augusta-Rockingham-Western Highland- Eastern Highland-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Western Grant-Western Mineral- Western Pendleton-Eastern Pendleton- Including the cities of Frostburg, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Hightown, Monterey, Big Meadows, Wintergreen, Bayard, Mount Storm, Elk Garden, Riverton, Brandywine, Franklin, Oak Flat, Ruddle, and Sugar Grove 136 PM EST Sat Nov 18 2017 ...WIND ADVISORY NOW IN EFFECT UNTIL 3 PM EST SUNDAY... * TIMING...Late this afternoon through midday Sunday, with the strongest gusts above 2000 feet. * WINDS...West 25 to 35 mph with gusts up to 50 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$
815 WWUS71 KLWX 182348 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 648 PM EST Sat Nov 18 2017 MDZ003-502-VAZ027>031-WVZ050>053-055-502-504-190800- /O.EXT.KLWX.WI.Y.0017.171119T0600Z-171119T2000Z/ Washington-Central and Eastern Allegany-Shenandoah-Frederick VA- Page-Warren-Clarke-Hampshire-Morgan-Berkeley-Jefferson-Hardy- Eastern Grant-Eastern Mineral- Including the cities of Hagerstown, Cumberland, Strasburg, Woodstock, Mount Jackson, New Market, Winchester, Luray, Shenandoah, Stanley, Front Royal, Berryville, Romney, Paw Paw, Martinsburg, Charles Town, Shepherdstown, Moorefield, Petersburg, Antioch, Keyser, New Creek, Ridgeville, Russelldale, Headsville, and Fort Ashby 648 PM EST Sat Nov 18 2017 ...WIND ADVISORY NOW IN EFFECT FROM 1 AM TO 3 PM EST SUNDAY... * TIMING...An initial burst of strong winds may occur with the passage of a strong cold front between 1 and 4 AM. Winds may diminish for a time and then peak mid to late morning Sunday before diminishing Sunday afternoon. * WINDS...West 20 to 35 mph with gusts up to 50 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$ MDZ501-VAZ025-026-503-504-507-508-WVZ501-503-505-506-190800- /O.CON.KLWX.WI.Y.0017.000000T0000Z-171119T2000Z/ Extreme Western Allegany-Augusta-Rockingham-Western Highland- Eastern Highland-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Western Grant-Western Mineral- Western Pendleton-Eastern Pendleton- Including the cities of Frostburg, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Hightown, Monterey, Big Meadows, Wintergreen, Bayard, Mount Storm, Elk Garden, Riverton, Brandywine, Franklin, Oak Flat, Ruddle, and Sugar Grove 648 PM EST Sat Nov 18 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM EST SUNDAY... * TIMING...Continuing through Sunday afternoon, with the strongest gusts above 2000 feet. Winds in the valleys will be strongest late tonight through Sunday morning. * WINDS...West 20 to 35 mph with gusts up to 55 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$ DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ040-052>054-501- 505-506-190800- /O.CON.KLWX.WI.Y.0017.171119T0900Z-171119T2000Z/ 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-Rappahannock- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern 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, Warrenton, Purcellville, Leesburg, Ashburn, and Sterling 648 PM EST Sat Nov 18 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 AM TO 3 PM EST SUNDAY... * TIMING...An initial burst of strong winds may occur with the passage of a strong cold front late tonight. Winds may diminish for a time and then peak mid to late morning Sunday before diminishing Sunday afternoon. * WINDS...West 20 to 35 mph with gusts up to 50 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$
265 WWUS71 KLWX 190532 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1232 AM EST Sun Nov 19 2017 MDZ501-VAZ025-026-503-504-507-508-WVZ501-503-505-506-191345- /O.CON.KLWX.WI.Y.0017.000000T0000Z-171119T2000Z/ Extreme Western Allegany-Augusta-Rockingham-Western Highland- Eastern Highland-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Western Grant-Western Mineral- Western Pendleton-Eastern Pendleton- Including the cities of Frostburg, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Hightown, Monterey, Big Meadows, Wintergreen, Bayard, Mount Storm, Elk Garden, Riverton, Brandywine, Franklin, Oak Flat, Ruddle, and Sugar Grove 1232 AM EST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... * TIMING...Continuing through this afternoon, with the strongest gusts above 2000 feet. Winds in the valleys will be strongest late tonight through Sunday morning. * WINDS...West 20 to 35 mph with gusts up to 55 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$ MDZ003-502-VAZ027>031-WVZ050>053-055-502-504-191345- /O.CON.KLWX.WI.Y.0017.171119T0600Z-171119T2000Z/ Washington-Central and Eastern Allegany-Shenandoah-Frederick VA- Page-Warren-Clarke-Hampshire-Morgan-Berkeley-Jefferson-Hardy- Eastern Grant-Eastern Mineral- Including the cities of Hagerstown, Cumberland, Strasburg, Woodstock, Mount Jackson, New Market, Winchester, Luray, Shenandoah, Stanley, Front Royal, Berryville, Romney, Paw Paw, Martinsburg, Charles Town, Shepherdstown, Moorefield, Petersburg, Antioch, Keyser, New Creek, Ridgeville, Russelldale, Headsville, and Fort Ashby 1232 AM EST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... * TIMING...An initial burst of strong winds may occur with the passage of a strong cold front between 1 and 4 AM. Winds may diminish for a time and then peak mid to late morning Sunday before diminishing Sunday afternoon. * WINDS...West 20 to 30 mph with gusts up to 50 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$ DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ040-052>054-501- 505-506-191345- /O.CON.KLWX.WI.Y.0017.171119T0900Z-171119T2000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys- Calvert-Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Southeast Harford-Rappahannock- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Loudoun-Eastern Loudoun- Including the cities of Washington, Frederick, Ballenger Creek, Eldersburg, Westminster, Reisterstown, Cockeysville, Baltimore, Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt, Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate, Severna Park, Arnold, Odenton, St. Charles, Waldorf, Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, Prince Frederick, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Warrenton, Purcellville, Leesburg, Ashburn, and Sterling 1232 AM EST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 AM EARLY THIS MORNING TO 3 PM EST THIS AFTERNOON... * TIMING...An initial burst of strong winds may occur with the passage of a strong cold front late tonight. Winds may diminish for a time and then peak mid to late morning Sunday before diminishing Sunday afternoon. * WINDS...West 20 to 30 mph with gusts up to 50 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$
818 WWUS71 KLWX 190855 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 355 AM EST Sun Nov 19 2017 MDZ003-501-502-VAZ025>031-503-504-507-508-WVZ050>053-055-501>506- 191700- /O.CON.KLWX.WI.Y.0017.000000T0000Z-171119T2000Z/ Washington-Extreme Western Allegany-Central and Eastern Allegany- Augusta-Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke- Western Highland-Eastern Highland-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Hampshire-Morgan-Berkeley-Jefferson- Hardy-Western Grant-Eastern Grant-Western Mineral-Eastern Mineral- Western Pendleton-Eastern Pendleton- Including the cities of Hagerstown, Frostburg, Cumberland, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Strasburg, Woodstock, Mount Jackson, New Market, Winchester, Luray, Shenandoah, Stanley, Front Royal, Berryville, Hightown, Monterey, Big Meadows, Wintergreen, Romney, Paw Paw, Martinsburg, Charles Town, Shepherdstown, Moorefield, Bayard, Mount Storm, Petersburg, Elk Garden, Antioch, Keyser, New Creek, Ridgeville, Russelldale, Headsville, Fort Ashby, Riverton, Brandywine, Franklin, Oak Flat, Ruddle, and Sugar Grove 355 AM EST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... * TIMING...Continuing through this afternoon, with the strongest gusts above 2000 feet. Winds in the valleys will be strongest this morning. * WINDS...West 20 to 30 mph with gusts up to 55 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$ DCZ001-MDZ004>006-011-013-014-016>018-503>508-VAZ040-052>054-501- 505-506-191700- /O.CON.KLWX.WI.Y.0017.171119T0900Z-171119T2000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys- Calvert-Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Southeast Harford-Rappahannock- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Loudoun-Eastern Loudoun- Including the cities of Washington, Frederick, Ballenger Creek, Eldersburg, Westminster, Reisterstown, Cockeysville, Baltimore, Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt, Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate, Severna Park, Arnold, Odenton, St. Charles, Waldorf, Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, Prince Frederick, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Warrenton, Purcellville, Leesburg, Ashburn, and Sterling 355 AM EST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... * TIMING...An initial surge of strong winds will occur with the passage of a strong cold front through 6 AM. The most widespread coverage of strong winds will then occur mid to late this morning before diminishing this afternoon. * WINDS...West 20 to 25 mph with gusts up to 50 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$
707 WWUS71 KLWX 191136 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 636 AM EST Sun Nov 19 2017 DCZ001-MDZ003>006-011-013-014-016>018-501>508-VAZ025>031-040- 052>054-501-503>508-WVZ050>053-055-501>506-191945- /O.CON.KLWX.WI.Y.0017.000000T0000Z-171119T2000Z/ District of Columbia-Washington-Frederick MD-Carroll- Northern Baltimore-Southern Baltimore-Prince Georges-Anne Arundel- Charles-St. Marys-Calvert-Extreme Western Allegany- Central and Eastern Allegany-Northwest Montgomery- Central and Southeast Montgomery-Northwest Howard- Central and Southeast Howard-Northwest Harford-Southeast Harford- Augusta-Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke- Rappahannock-Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Highland-Eastern Highland-Western Loudoun-Eastern Loudoun- Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant- Eastern Grant-Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- Including the cities of Washington, Hagerstown, 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, Frostburg, Cumberland, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Strasburg, Woodstock, Mount Jackson, New Market, Winchester, Luray, Shenandoah, Stanley, Front Royal, Berryville, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Warrenton, Hightown, Monterey, Purcellville, Leesburg, Ashburn, Sterling, Big Meadows, Wintergreen, Romney, Paw Paw, Martinsburg, Charles Town, Shepherdstown, Moorefield, Bayard, Mount Storm, Petersburg, Elk Garden, Antioch, Keyser, New Creek, Ridgeville, Russelldale, Headsville, Fort Ashby, Riverton, Brandywine, Franklin, Oak Flat, Ruddle, and Sugar Grove 636 AM EST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... * TIMING...Strong wind gusts will continue through this afternoon. The winds will be strongest through noon. * WINDS...West 20 to 30 mph with gusts up to 55 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$
143 WWUS71 KLWX 191657 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1157 AM EST Sun Nov 19 2017 MDZ501-VAZ025>027-029-030-040-503-504-507-508-WVZ050-055-501>506- 191800- /O.CAN.KLWX.WI.Y.0017.000000T0000Z-171119T2000Z/ Extreme Western Allegany-Augusta-Rockingham-Shenandoah-Page- Warren-Rappahannock-Western Highland-Eastern Highland- Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Hampshire-Hardy-Western Grant-Eastern Grant-Western Mineral- Eastern Mineral-Western Pendleton-Eastern Pendleton- Including the cities of Frostburg, Staunton, Waynesboro, Stuarts Draft, Harrisonburg, Strasburg, Woodstock, Mount Jackson, New Market, Luray, Shenandoah, Stanley, Front Royal, Washington, Hightown, Monterey, Big Meadows, Wintergreen, Romney, Moorefield, Bayard, Mount Storm, Petersburg, Elk Garden, Antioch, Keyser, New Creek, Ridgeville, Russelldale, Headsville, Fort Ashby, Riverton, Brandywine, Franklin, Oak Flat, Ruddle, and Sugar Grove 1157 AM EST Sun Nov 19 2017 ...WIND ADVISORY IS CANCELLED... The National Weather Service in Baltimore MD/Washington has cancelled the Wind Advisory. Winds are diminishing slowly and should remain below 45 mph for the rest of today. $$ DCZ001-MDZ003>006-011-013-014-016>018-502>508-VAZ028-031-052>054- 501-505-506-WVZ051>053-192000- /O.CON.KLWX.WI.Y.0017.000000T0000Z-171119T2000Z/ District of Columbia-Washington-Frederick MD-Carroll- Northern Baltimore-Southern Baltimore-Prince Georges-Anne Arundel- Charles-St. Marys-Calvert-Central and Eastern Allegany- Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Southeast Harford-Frederick VA-Clarke- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Loudoun-Eastern Loudoun-Morgan-Berkeley-Jefferson- Including the cities of Washington, Hagerstown, 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, Cumberland, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen, Winchester, Berryville, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Warrenton, Purcellville, Leesburg, Ashburn, Sterling, Paw Paw, Martinsburg, Charles Town, and Shepherdstown 1157 AM EST Sun Nov 19 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... * TIMING...Strong wind gusts will continue through early this afternoon. * WINDS...Northwest 20 to 25 mph with gusts up to 45 mph. * IMPACTS...Strong winds may blow down limbs, trees, and power lines. Scattered power outages are expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds of 45 to 55 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. && $$
972 WWUS71 KLWX 191759 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1259 PM EST Sun Nov 19 2017 DCZ001-MDZ003>006-011-013-014-016>018-502>508-VAZ028-031-052>054- 501-505-506-WVZ051>053-191900- /O.CAN.KLWX.WI.Y.0017.000000T0000Z-171119T2000Z/ District of Columbia-Washington-Frederick MD-Carroll- Northern Baltimore-Southern Baltimore-Prince Georges-Anne Arundel- Charles-St. Marys-Calvert-Central and Eastern Allegany- Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Southeast Harford-Frederick VA-Clarke- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Loudoun-Eastern Loudoun-Morgan-Berkeley-Jefferson- Including the cities of Washington, Hagerstown, Frederick, Ballenger Creek, Eldersburg, Westminster, Reisterstown, Cockeysville, Baltimore, Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt, Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate, Severna Park, Arnold, Odenton, St. Charles, Waldorf, Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, Prince Frederick, Cumberland, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Jarrettsville, Aberdeen, Winchester, Berryville, Dale City, Manassas, Woodbridge, Lake Ridge, Montclair, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Warrenton, Purcellville, Leesburg, Ashburn, Sterling, Paw Paw, Martinsburg, Charles Town, and Shepherdstown 1259 PM EST Sun Nov 19 2017 ...WIND ADVISORY IS CANCELLED... The National Weather Service in Baltimore MD/Washington has cancelled the Wind Advisory. Wind gusts have diminished below 45 mph. $$
What forecasters said that day
The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this wind advisory went out at Nov 17, 9:06 PM EST, 6 hours 34 minutes earlier.
Area forecast discussion, Nov 17, 9:06 PM EST, 6 hours 34 minutes before
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
906 PM EST Fri Nov 17 2017
.SYNOPSIS...
High pressure will move offshore tonight through Saturday. A
strong cold front will cross the area late Saturday night. High
pressure will build to the south of the region late Sunday
through Monday before moving offshore Tuesday. Another cold
front will pass through Tuesday night into Wednesday and
Canadian High pressure is likely to build overhead for
Thanksgiving Day.
&&
.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
High pressure is centered over eastern North Carolina, with
winds nearly calm across much of the area. However, warm
advection has already begun in advance of the approaching system
to our west, and high level moisture is already moving overhead
in the form of cirrus. So far the cirrus has done little to
stop temperatures from dropping rapidly since sunset to around
freezing. Just pushed a forecast update with an adjustment from
current trends. The forecast is tricky though, since it's
possible temperatures level off as clouds thicken, or even rise
in some spots as a light southerly wind develops late.
Guidance has sped up leading edge of showers a touch quicker,
reaching the Potomac Highlands around dawn. Initially this
should be very light and falling from mid-level clouds. Wouldn't
be surprised if there were a few sleet pellets due to cold/dry
low levels. There's also some concern with how we've radiated if
those temperatures will recover above freezing before
precipitation arrives. At this time, don't think there is an
appreciable threat for any freezing rain though.
&&
.SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY NIGHT/...
System developing in the central plains at present will bring
some active weather to us this weekend, with the main focus
being near and after cold frontal passage late Saturday night.
To start Saturday, high pressure will be to the southeast, and a
warm front will be approaching from the south as low pressure
strengthens and heads northeast across the Corn Belt. As the
warm front lifts north through the day, clouds will continue to
thicken and lower, and some rain may break out across the area.
Best chance is northwest of I-95 corridor, up in western MD and
eastern WV, but guidance is shifting a bit further south as
well. PoPs have been adjusted upward slightly across the
northern half of the area, but may ultimately need to go higher
along the US 50 corridor. That having been said, rain still
looks likely to hold off until midday in the metro (if it makes
it that far). Temps should rise above freezing everywhere by
then, but there is a small chance a little ice could occur in a
sheltered valley near Cumberland early Saturday. Otherwise, the
low level southerly flow will be increasing through the day,
and a late day or evening high looks more likely than not. In
fact, temps could spike several degrees warmer than our forecast
towards midnight, but given uncertainty, held temps down for
now. One caveat: if steadier precipitation does develop across
the north during the morning, an in-situ wedge/cold pool could
develop, resulting in highs stuck in the 40s. Then this cold
pool may not break, especially in the North Branch Potomac River
area, until the cold frontal passage, as depicted by the NAM
3km nest (and supported by climatology).
Warm front should lift north of the CWA late Saturday/early
Saturday night, and the rain chances look to diminish for a time
late Saturday afternoon and Saturday evening as it does so. Cold
front then pushes east across the region late Saturday night
into early Sunday morning, possibly accompanied by a low-topped
squall line or squall segments. There is a lot of low level wind
ahead of the front, but given the southerly flow and likely low
level inversion, do not expect widespread wind advisory criteria
ahead of the front - however, some ridges may touch wind
advisory before the front passes Saturday night. Highs will also
likely be reached predawn Sunday across most of the region, with
temps possibly spiking into the 60s, but our forecast highs do
not reflect this given they focus on the daylight hours Sunday
when temps will be more or less steady, perhaps even falling.
Winds with the actual front could touch wind advisory late
Saturday night/early Sunday, especially if there is a band of
showers with it.
Behind the front, most areas will dry out as low pressure lifts
northeast into southern Canada, but upslope flow will get going
along the Allegheny Front, so snow showers are likely most of
the day Sunday before diminishing Sunday evening. Advisory level
accumulations are possible along the Allegheny Front. Further
east, the main story will be the wind, which is likely to gust
close to advisory criteria even in the low elevations of the
metro, though odds are better in northern areas (Maryland) than
further south (Virginia). Right now best gradient and wind aloft
combined with mixing appears to maximize gusts during the
morning Sunday, so this is when we peak them in the forecast,
but its possible it peaks with the actual front overnight, or
later in the day when mixing increases (but winds aloft and
gradient diminish a bit). Given how far out in time it is, have
held off on wind advisory for now, but it still looks like a
decent bet especially near the Mason-Dixon line.
By Sunday night, the low will be continuing to move away and the
gradient, winds aloft and mixing will all decrease as heights
start to rise. This should both cut off the snow in the upslope
regions as well as allow gusts to fall off. Temps will be chilly
Sunday night, but not as cold as we experienced a week ago.
&&
.LONG TERM /MONDAY THROUGH FRIDAY/...
High pressure will build into the region Monday and Monday
night. Dry conditions expected with temperatures 5 to 10 degrees
below average each period.
The high pressure will move offshore Tuesday to allow for a
strong cold front to plunge southeastward into the region
Tuesday night. The front should be a dry front with the lack of
moisture present. However, we can't rule out a couple of upslope
snow showers Tuesday night.
High pressure will build into the region Wednesday through
Friday. Temperatures will remain chilly for this time in
November with dry conditions and some sunshine.
&&
.AVIATION /02Z SATURDAY THROUGH WEDNESDAY/...
VFR through at least Saturday morning, though cigs will be
lowering and vis may briefly be restricted in showers during the
afternoon Saturday (earlier at MRB, where there's also a chance
of MVFR cigs by midday). There may also be some low level wind
shear Saturday morning, particularly at MRB, but also possibly
at the other terminals. As usual, NAM is much lower with cigs by
Saturday evening, but have played conservatively at low end VFR
for now.
Brief IFR possible in showers with winds possibly gusting to 40
knots late Saturday night as cold front plows through. Going
quickly back to VFR Sunday, but winds may continue to gust, with
possibly 40 knot gusts at times Sunday, with best odds being at
BWI/MTN. Winds diminish with continued VFR Sunday night.
VFR conditions expected Monday through Tuesday night. Winds
west around 10 knots gusts 15 knots Monday. Winds southwest 5 to
10 knots Monday night through Tuesday night.
&&
.MARINE...
Winds diminishing at present as high pressure moves overhead.
Most of night should be sub SCA, but southerly flow on back side
of high will begin after midnight. Have pushed back Small Craft
Advisory to 3 AM for the wider Bay waters, where channeling
should be maximized.
Winds above the surface look quite strong as Saturday wears on,
but think this southerly flow over somewhat cooled waters
should keep gales from happening Saturday and most of Saturday
night, so just extended SCA through the night. We may need a
gale late Saturday night with the cold frontal passage and
accompanying gusty showers, and will likely need one in the wake
of the front on Sunday for NW winds gusting perhaps as high as
40 knots. Winds diminish Sunday night as the front and storm
moves further away and high pressure starts building in.
Small craft advisories may still be needed Monday. Winds west
10 to 15 knots gusts up to 20 knots. No marine hazards Monday
night through Tuesday night.
&&
.TIDES/COASTAL FLOODING...
Anomalies remain around a third of a foot, but will likely
rebound as the lingering anomalies to our south push back north
with increasing southerly flow later tonight and Saturday. Minor
flooding is anticipated at our sensitive sites, perhaps even
some of the less sensitive ones, during the high tides later
Saturday into early Sunday. After that, cold front will bring
northwest winds back and should drop the anomalies enough to
prevent minor flooding by midday Sunday at latest, probably
earlier.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...Small Craft Advisory from 6 AM Saturday to 6 AM EST Sunday for
ANZ530-531-535>542.
Small Craft Advisory from 3 AM Saturday to 6 AM EST Sunday for
ANZ532>534-543.
&&
SYNOPSIS...RCM
NEAR TERM...ADS/RCM
SHORT TERM...ADS/RCM
LONG TERM...KLW
AVIATION...ADS/RCM/KLW
MARINE...ADS/RCM/KLW
TIDES/COASTAL FLOODING...RCMHazardous weather outlook, Nov 17, 5:05 AM EST, 22 hours 35 minutes before
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 505 AM EST Fri Nov 17 2017 ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-181000- 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-District of Columbia-Southern Baltimore-Prince Georges- Anne Arundel-Charles-St. Marys-Calvert-Southeast Harford- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Stafford-Spotsylvania- King George- 505 AM EST Fri Nov 17 2017 This Hazardous Weather Outlook is for the Maryland portion of the Chesapeake Bay, Tidal Potomac River, and adjacent counties in central Maryland and northern Virginia as well as the District of Columbia. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Strong gusty winds are possible Saturday night into Sunday in association with a strong cold front. A Wind Advisory may be required on land, and Gale Warnings will likely be needed over the waters. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MDZ003>006-501>507-VAZ025>031-036>040-050-051-501>508-WVZ050>053- 055-501>506-181000- Washington-Frederick MD-Carroll-Northern Baltimore- Extreme Western Allegany-Central and Eastern Allegany- Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Augusta-Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke- Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper- Northern Fauquier-Southern Fauquier-Western Highland- Eastern Highland-Western Loudoun-Eastern Loudoun- Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant- Eastern Grant-Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 505 AM EST Fri Nov 17 2017 This Hazardous Weather Outlook is for eastern West Virginia, northern and central Virginia, and central and western Maryland with the exception of Garrett County. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Strong gusty winds are likely late Saturday into Sunday in association with a strong cold front, especially over the higher elevations. A Wind Advisory may be required. A period of upslope snow showers is likely Saturday night through Sunday along the western ridges of the Allegheny Front, and may require a Winter Weather Advisory. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 18, 2:50 AM EST | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Harford, Saint Mary's, City of Baltimore | 21 hr |
| Nov 18, 3:21 AM EST | Gale Warning | LWX | 38 hr | |
| Nov 18, 2:19 PM EST | Winter Weather Advisory | LWX | Grant, Pendleton | 32 hr |
Nearby
Wind Advisories in Virginia, 2017Wind Advisories in Maryland, 2017Wind Advisories in West Virginia, 2017Every wind advisory in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.