arlwx12

Flash Flood Warning National Weather Service Baltimore MD/Washington DC 545 PM EDT Mon Jul 14 2025 The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... Northwestern District of Columbia... South Central Montgomery County in central Maryland... Northwestern Arlington County in northern Virginia... Fairfax County in northern Virginia... * Until 845 PM EDT. * At 545 PM EDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2 inches of rain have fallen. The expected rainfall rate is 2 to 3 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Arlington... Bethesda... Vienna... Pimmit Hills... Mclean... American Legion Bridge... Fort Totten... Potomac... Oakton... Tysons Corner... Takoma Park... Wolf Trap... Great Falls... Chevy Chase... Martin`s Additions... North Chevy Chase... Friendship Village... American University... Georgetown... Adams Morgan...

BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Baltimore MD/Washington DC 449 PM EDT Sat Jul 12 2025 The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... South Central Montgomery County in central Maryland... West Central Arlington County in northern Virginia... Fairfax County in northern Virginia... The Northwestern City of Falls Church in northern Virginia... * Until 800 PM EDT. * At 449 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 30 minutes. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Arlington... Rockville... Bethesda... Reston... Herndon... Fairfax... Vienna... Falls Church... Pimmit Hills... American Legion Bridge... Mclean... Potomac... North Bethesda... Oakton... North Potomac... Tysons Corner... Wolf Trap... Great Falls... Merrifield... I66 and I495 Interchange...

Flash Flood Warning National Weather Service Baltimore MD/Washington DC 513 PM EDT Sat Jul 12 2025 The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... Fairfax County in northern Virginia... South Central Loudoun County in northern Virginia... Prince William County in northern Virginia... * Until 815 PM EDT. * At 513 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 30 minutes. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Centreville... Bull Run... Sudley... Catharpin... Woolsey...

DCA was reporting 1.1" so far, while the Four Mile Run USGS gauge claimed about 1.4".

BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Baltimore MD/Washington DC 544 PM EDT Wed Jul 9 2025 The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... District of Columbia... South Central Montgomery County in central Maryland... Arlington County in northern Virginia... Northeastern Fairfax County in northern Virginia... The City of Alexandria in northern Virginia... The City of Falls Church in northern Virginia... * Until 845 PM EDT. * At 544 PM EDT, Doppler radar indicated thunderstorms producing heavy rain will move across the warned area. Rain may have not started, but expected rainfall rates of 1 to 2 inches in 20 minutes are anticipated. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

Pouring rain in the Crystal City area.

Flash Flood Warning National Weather Service Baltimore MD/Washington DC 254 PM EDT Tue Jul 1 2025 The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... Northwestern District of Columbia... Southeastern Montgomery County in central Maryland... Western Arlington County in northern Virginia... Fairfax County in northern Virginia... The Northwestern City of Alexandria in northern Virginia... The City of Fairfax in northern Virginia... The City of Falls Church in northern Virginia... * Until 600 PM EDT. * At 254 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. The expected rainfall rate is 1.5 to 2.5 inches in 1 hour. Additional rainfall amounts of 1 to 2.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 238 PM EDT Tue Jul 1 2025 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... The District of Columbia... South central Montgomery County in central Maryland... Southeastern Loudoun County in northern Virginia... The City of Fairfax in northern Virginia... Arlington County in northern Virginia... The City of Falls Church in northern Virginia... Fairfax County in northern Virginia... The City of Manassas Park in northern Virginia... Central Prince William County in northern Virginia... The City of Manassas in northern Virginia... The northern City of Alexandria in northern Virginia... * Until 330 PM EDT. * At 238 PM EDT, a severe thunderstorm was located over Centreville, moving northeast at 25 mph.

BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Baltimore MD/Washington DC 221 PM EDT Tue Jul 1 2025 The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for... Tidal Potomac from Indian Head to Cobb Island MD... Tidal Potomac from Key Bridge to Indian Head MD... * Until 345 PM EDT. * At 220 PM EDT, strong thunderstorms were located along a line extending from 16 nm northwest of Key Bridge to 12 nm northwest of Leesylvania State Park to 18 nm west of Aquia Creek, moving east at 20 knots.

BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 1241 PM EDT Tue Jul 1 2025 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Northeastern Rappahannock County in northwestern Virginia... Central Fauquier County in northern Virginia... North central Culpeper County in northern Virginia... * Until 115 PM EDT. * At 1241 PM EDT, a severe thunderstorm was located 8 miles east of Sperryville, or 15 miles west of Warrenton, moving east at 15 mph.

Flood Watch National Weather Service Baltimore MD/Washington DC 212 AM EDT Sat Jun 14 2025 DCZ001-MDZ013-016>018-504-VAZ025>031-036>040-050-051-053>057-501-502- 505>508-526-527-141415- /O.NEW.KLWX.FA.A.0012.250614T1800Z-250615T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ District of Columbia-Prince Georges-Charles-St. Marys-Calvert- Central and Southeast Montgomery-Augusta-Rockingham-Shenandoah- Frederick VA-Page-Warren-Clarke-Nelson-Albemarle-Greene-Madison- Rappahannock-Orange-Culpeper-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Northern Fauquier-Southern Fauquier-Western Loudoun-Eastern Loudoun- Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 212 AM EDT Sat Jun 14 2025 ...FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH THIS EVENING... * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of DC, including the following , District of Columbia, Maryland, including the following areas, Calvert, Central and Southeast Montgomery, Charles, Prince Georges and St. Marys, and Virginia, including the following areas, Albemarle, Arlington/Falls Church/Alexandria, Augusta, Central Virginia Blue Ridge, Central and Southeast Prince William/Manassas/Manassas Park, Clarke, Culpeper, Eastern Loudoun, Fairfax, Frederick VA, Greene, King George, Madison, Nelson, Northern Fauquier, Northern Virginia Blue Ridge, Northwest Prince William, Orange, Page, Rappahannock, Rockingham, Shenandoah, Southern Fauquier, Spotsylvania, Stafford, Warren and Western Loudoun. * WHEN...From 2 PM EDT this afternoon through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Showers and thunderstorms will increase in coverage through this afternoon and evening. Some thunderstorms will contain heavy rainfall, with rainfall amounts around 1 to 3 inches possible within an hour or two. Storms may also train over the same areas, causing the possibility for locally higher amounts around to 5 inches of rain within a few hours. Heavy rainfall in a short period of time combining with already saturated soils means that creeks and streams may rapidly rise out of their banks along with the potential for flash flooding in urban areas.

lash Flood Warning DCC001-MDC031-033-VAC013-059-510-610-140400- /O.NEW.KLWX.FF.W.0033.250614T0011Z-250614T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Baltimore MD/Washington DC 811 PM EDT Fri Jun 13 2025 The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... District of Columbia... Southeastern Montgomery County in central Maryland... Northwestern Prince Georges County in central Maryland... Arlington County in northern Virginia... Northern Fairfax County in northern Virginia... The City of Alexandria in northern Virginia... The City of Falls Church in northern Virginia... * Until midnight EDT tonight. * At 811 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. The expected rainfall rate is 1.5 to 3 inches in 1 hour. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected t

Thunder in Arlington VA.

TORNADO WATCH OUTLINE UPDATE FOR WT 392 NWS STORM PREDICTION CENTER NORMAN OK 225 PM EDT SUN JUN 8 2025 TORNADO WATCH 392 IS IN EFFECT UNTIL 1000 PM EDT FOR THE FOLLOWING LOCATIONS DCC001-090200- /O.NEW.KWNS.TO.A.0392.250608T1825Z-250609T0200Z/ DC . DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE DISTRICT OF COLUMBIA $$ TORNADO WATCH OUTLINE UPDATE FOR WT 392 NWS STORM PREDICTION CENTER NORMAN OK 225 PM EDT SUN JUN 8 2025 TORNADO WATCH 392 IS IN EFFECT UNTIL 1000 PM EDT FOR THE FOLLOWING LOCATIONS MDC003-009-017-021-027-031-033-037-043-090200- /O.NEW.KWNS.TO.A.0392.250608T1825Z-250609T0200Z/ MD . MARYLAND COUNTIES INCLUDED ARE ANNE ARUNDEL CALVERT CHARLES FREDERICK HOWARD MONTGOMERY PRINCE GEORGES ST. MARYS WASHINGTON $$ TORNADO WATCH OUTLINE UPDATE FOR WT 392 NWS STORM PREDICTION CENTER NORMAN OK 225 PM EDT SUN JUN 8 2025 TORNADO WATCH 392 IS IN EFFECT UNTIL 1000 PM EDT FOR THE FOLLOWING LOCATIONS VAC003-013-015-029-033-036-041-043-047-049-057-059-061-065-069- 073-075-079-085-087-095-097-099-101-103-107-109-113-115-119-125- 127-133-137-139-145-153-157-159-165-171-177-179-187-193-199-510- 540-600-610-630-650-660-683-685-700-735-760-790-820-830-840- 090200- /O.NEW.KWNS.TO.A.0392.250608T1825Z-250609T0200Z/ VA . VIRGINIA COUNTIES INCLUDED ARE ALBEMARLE ARLINGTON AUGUSTA BUCKINGHAM CAROLINE CHARLES CITY CHESTERFIELD CLARKE CULPEPER CUMBERLAND ESSEX FAIRFAX FAUQUIER FLUVANNA FREDERICK GLOUCESTER GOOCHLAND GREENE HANOVER HENRICO JAMES CITY KING AND QUEEN KING GEORGE KING WILLIAM LANCASTER LOUDOUN LOUISA MADISON MATHEWS MIDDLESEX NELSON NEW KENT NORTHUMBERLAND ORANGE PAGE POWHATAN PRINCE WILLIAM RAPPAHANNOCK RICHMOND ROCKINGHAM SHENANDOAH SPOTSYLVANIA STAFFORD WARREN WESTMORELAND YORK VIRGINIA INDEPENDENT CITIES INCLUDED ARE ALEXANDRIA CHARLOTTESVILLE FAIRFAX FALLS CHURCH FREDERICKSBURG HAMPTON HARRISONBURG MANASSAS MANASSAS PARK NEWPORT NEWS POQUOSON RICHMOND STAUNTON WAYNESBORO WILLIAMSBURG WINCHESTER $$ TORNADO WATCH OUTLINE UPDATE FOR WT 392 NWS STORM PREDICTION CENTER NORMAN OK 225 PM EDT SUN JUN 8 2025 TORNADO WATCH 392 IS IN EFFECT UNTIL 1000 PM EDT FOR THE FOLLOWING LOCATIONS WVC003-037-090200- /O.NEW.KWNS.TO.A.0392.250608T1825Z-250609T0200Z/ WV . WEST VIRGINIA COUNTIES INCLUDED ARE BERKELEY JEFFERSON $$

Tornado watch up

Special Marine Warning National Weather Service Baltimore MD/Washington DC 152 PM EDT Sun Jun 8 2025 The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for... Tidal Potomac from Indian Head to Cobb Island MD... * Until 315 PM EDT. * At 152 PM EDT, a severe thunderstorm capable of producing waterspouts was located near Colonial Beach, moving northeast at 10 knots.

Special Marine Warning National Weather Service Baltimore MD/Washington DC 1247 PM EDT Sun Jun 8 2025 The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for... Tidal Potomac from Indian Head to Cobb Island MD... * Until 215 PM EDT. * At 1247 PM EDT, a severe thunderstorm capable of producing waterspouts was located 8 nm west of Aquia Creek, moving northeast at 15 knots.

BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 358 PM EDT Fri May 16 2025 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Central Montgomery County in central Maryland... East central Loudoun County in northern Virginia... North central Fairfax County in northern Virginia... * Until 445 PM EDT. * At 358 PM EDT, a severe thunderstorm was located over Leesburg, moving east at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. 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... Cabin John, Gaithersburg, Leesburg, Potomac, Washington Grove, Belmont, American Legion Bridge, Langley, Bradley Farms, North Potomac, Germantown, Redland, Poolesville, Mclean, Montgomery Village, Darnestown, Derwood, Lowes Island, Lansdowne, and Great Falls.

BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 358 PM EDT Fri May 16 2025 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Central Montgomery County in central Maryland... East central Loudoun County in northern Virginia... North central Fairfax County in northern Virginia... * Until 445 PM EDT. * At 358 PM EDT, a severe thunderstorm was located over Leesburg, moving east at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. 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... Cabin John, Gaithersburg, Leesburg, Potomac, Washington Grove, Belmont, American Legion Bridge, Langley, Bradley Farms, North Potomac, Germantown, Redland, Poolesville, Mclean, Montgomery Village, Darnestown, Derwood, Lowes Island, Lansdowne, and Great Falls.

BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 324 PM EDT Fri May 16 2025 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... West central Montgomery County in central Maryland... Southwestern Frederick County in north central Maryland... Northern Loudoun County in northern Virginia... Southeastern Jefferson County in the Panhandle of West Virginia... * Until 400 PM EDT. * At 324 PM EDT, a severe thunderstorm was located near Round Hill, or near Charles Town, moving east at 25 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. 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... Round Hill, Paeonian Springs, Purcellville, Leesburg, Waterford, Neersville, Doubs, Lucketts, Hillsboro, Point Of Rocks, Hamilton, Lovettsville, Tuscarora, Lincoln, Taylorstown, Rippon, Lansdowne, Poolesville, Adamstown, and Charles Town.

Flash flood watch for parts of DC metro. Flood Watch National Weather Service Baltimore MD/Washington DC 400 PM EDT Wed May 14 2025 VAZ031-053-055-057-501-502-505-506-526-527-WVZ052-053-150400- /O.EXB.KLWX.FA.A.0005.000000T0000Z-250515T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clarke-Fairfax-Stafford-King George-Northern Fauquier-Southern Fauquier-Western Loudoun-Eastern Loudoun-Northwest Prince William- Central and Southeast Prince William/Manassas/Manassas Park- Berkeley-Jefferson- 400 PM EDT Wed May 14 2025 ...FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Virginia, including the following areas, Central and Southeast Prince William/Manassas/Manassas Park, Clarke, Eastern Loudoun, Fairfax, King George, Northern Fauquier, Northwest Prince William, Southern Fauquier, Stafford and Western Loudoun and panhandle West Virginia, including the following areas, Berkeley and Jefferson. * WHEN...Until midnight EDT tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - Numerous showers and thunderstorms will move gradually northward through the area through this evening. While not as widespread as yesterday, isolated rainfall amounts of 1 to 3 inches are possible in a one to two hour period. Should these rainfall amounts occur over sensitive or urban areas, flash flooding is possible.

And an elevated excessive rainfall risk: Experimental Graphical Hazardous Weather Outlook

The latest AFD from LWX: (bolding mine) .SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... The aforementioned upper low will continue to drift northeastward toward the area tomorrow, and will eventually become centered overhead during the day on Wednesday. A steady rain will continue through much of the morning tomorrow within the zone of large scale ascent downstream of the approaching upper low. As we work into the afternoon hours, a mid-level dry slot may start to work in from the southwest, which may allow for a few breaks of sun and some limited surface heating/development of surface based instability. If this occurs, thunderstorms may start to develop within the dry slot and lift northward into the area during the late afternoon/evening hours. These thunderstorms may be capable of producing heavier rainfall rates, and may potentially lead to some instances of flooding. The earlier issued Flood Watch was expanded to include all of the WV Panhandle, most of Northern Virginia, and Allegany County in Maryland. A general 2-4 inches of rain is expected by late Tuesday night across the watch area, with localized higher totals along the eastern facing slopes of the Blue Ridge and Alleghenies, where upslope southeasterly flow should enhance totals. Further north and east, rainfall totals are expected to be slightly lower, but an instance or two of flooding can`t be completely ruled out. The steadier rain should come to an end from southwest to northeast during the second half of the night, with the Flood Watch ending as well late Tuesday night.

Severe thunderstorm watch to the south and southwest. SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 139 NWS STORM PREDICTION CENTER NORMAN OK 650 PM EDT MON APR 14 2025 SEVERE THUNDERSTORM WATCH 139 IS IN EFFECT UNTIL 100 AM EDT FOR THE FOLLOWING LOCATIONS VAC003-015-033-047-049-061-065-075-079-085-087-091-099-109-113- 125-137-139-145-153-157-165-171-177-179-187-540-630-660-683-685- 760-790-820-150500- /O.NEW.KWNS.SV.A.0139.250414T2250Z-250415T0500Z/ VA . VIRGINIA COUNTIES INCLUDED ARE ALBEMARLE AUGUSTA CAROLINE CULPEPER CUMBERLAND FAUQUIER FLUVANNA GOOCHLAND GREENE HANOVER HENRICO HIGHLAND KING GEORGE LOUISA MADISON NELSON ORANGE PAGE POWHATAN PRINCE WILLIAM RAPPAHANNOCK ROCKINGHAM SHENANDOAH SPOTSYLVANIA STAFFORD WARREN VIRGINIA INDEPENDENT CITIES INCLUDED ARE CHARLOTTESVILLE FREDERICKSBURG HARRISONBURG MANASSAS MANASSAS PARK RICHMOND STAUNTON WAYNESBORO $$

From the 2 pm NWS discussion... (snip) Well below normal temperatures are expected tonight through Wednesday morning, dropping 15 to 25 degrees below normal. Below is a list of record daily low temperatures for April 9. Site Record (year set) Washington DC area (DCA) 28 F (1972, 1917, 1896) Baltimore MD area (BWI) 26 F (2007) Baltimore Downtown MD area (DMH) 28 F (1972) Sterling-Dulles Airport VA area (IAD) 23 F (1977) Annapolis MD area (NAK) 23 F (1972) Hagerstown MD area (HGR) 21 F (1972) Martinsburg WV area (MRB) 20 F (1972) Charlottesville VA area (CHO) 26 F (2007) (snip)