An isolated thunderstorm tracked across Loudoun County in northern Virginia causing localized wind damage during the mid evening hours.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LWX wrote it up.
An isolated thunderstorm tracked across Loudoun County in northern Virginia causing localized wind damage during the mid evening hours.
The local office's own words before the first event, 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 the first event at Aug 1, 8:03 PM EST, 1 hour 22 minutes earlier.
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 903 PM EDT Mon Aug 1 2022 .SYNOPSIS... A warm front will lift north of the area by tonight. A trough of low pressure will move across the area Tuesday followed by a weak cold front Tuesday night. High pressure will build over the region Wednesday and Thursday. A weak cold front may approach the area at the end of the week. && .NEAR TERM /THROUGH TONIGHT/... 9 PM Update: A warm front has lifted northward through most of the area. A lingering trough will continue to allow for showers and a few thunderstorms over the next couple of hours, mainly north of I-66. Upstream thunderstorms over the last several hours across OH/PA have produced a few isolated tornadoes. There still exists a non-zero chance that one of these cells makes it into portions of western MD and the eastern WV panhandle over the next hour or so before dissipating. Overnight, these showers should wane and a drying pattern will commence heading into Tuesday morning. Previous Discussion Below: Weak warm front/moisture discontinuity lies across southern portions of the CWA this afternoon. Scattered showers have begun forming south of this boundary, and in general this will be the favored area for any convective development for the remainder of the afternoon. However, an increasing number of models show this boundary and associated instability lifting north through this evening, allowing at least some isolated showers and storms making it as far north as the DC metro area before dissipating this evening. Am not terribly confident on this occurring however. While some modest shear is in place, it seems poor lapse rates and subsidence may limit the coverage and intensity of any convection. Another wild card is what happens in the Ohio Valley today. An MCV is currently over central Ohio. If new thunderstorms form ahead of this feature, they could reach the mountains by late afternoon or evening, potentially pushing across northern portions of the CWA before dissipating. Additional convection may form ahead of another shortwave and surface cold front that could reach the Appalachians by late evening into the overnight...though most guidance agrees these would dissipate as they cross the mountains. Otherwise seasonable temperatures are expected tonight with partly cloudy skies. && .SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... Mid level shortwave trough will cross the area Tuesday morning, while the surface trough/"cold" front slips south into the area. This will lead to increasing subsidence and dry air advection. An isolated shower or storm may form ahead of the surface boundary in southern portions of the forecast area during the afternoon, but most areas will be dry. Downsloping westerly wind and more sun will result in slightly warmer temperatures in the upper 80s to near 90. Tuesday night will be dry with seasonable temperatures. The boundary will become diffuse by Wednesday, with subtropical ridging building back northward and surface winds becoming more southerly. High temperatures will rise into the upper 80s to lower 90s, although humidity won't rise just yet. Subsidence/lack of forcing should preclude any precipitation chances. Lows Tuesday night will range from the mid 60s to lower 70s. && .LONG TERM /THURSDAY THROUGH MONDAY/... Thursday still looks like the hottest day of the week with air temperatures reaching well into the 90s and heat indices approaching 100. Questions surrounding exactly how hot it gets and in particular just how humid it is during the afternoon yield low certainty on whether or not we breach Heat Advisory criteria. Some showers and thunderstorms may develop especially near the mountains during the afternoon into evening hours. The next cold front will approach from the Great Lakes Friday. The front itself is relatively weak, and it will be slowing down as it approaches. As the boundary interacts with the hot and increasingly humid airmass in place, showers and thunderstorms will likely develop. Shear looks quite weak - 15 kts or less - which is typical of early August. Therefore, storms should remain rather disorganized but could still produce gusty winds and heavy rain. High pressure driving the aforementioned front is expected to move due east near the Canadian border, so the front will likely stall over the Mid-Atlantic. This will continue the chance of showers and thunderstorms through the weekend with seasonably warm temperatures. && .AVIATION /01Z TUESDAY THROUGH SATURDAY/... An isolated thunderstorm is possible across KMRB over the next hour or so before chances decrease. Beyond that, VFR conditions are expected for the remainder of the night with some mid to low level clouds lingering through the early morning hours. Otherwise VFR conditions are expected through the middle of the week. W/NW winds on Tuesday will become S Wednesday. Mainly VFR is expected outside of showers and thunderstorms late in the week with generally light southerly flow. && .MARINE... West winds becoming southerly tonight could reach 15 kt at times. Outside chance of a thunderstorm reaching the Potomac by this evening but threat is low. Another low chance of a shower or storm on Tuesday afternoon near southern Maryland as winds become westerly again behind a weak front. Northwest winds may approach SCA criteria Tuesday night on the bay. High pressure will strengthen on Wednesday and southerly winds may approach SCA criteria on the bay Wednesday night. However, confidence is low for needing any advisories through mid week. Southerly channeling could result in near SCA level winds late in the week. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...None. VA...None. WV...None. MARINE...None. && SYNOPSIS...ADS NEAR TERM...ADS/ADM SHORT TERM...ADS/ADM LONG TERM...DHOF AVIATION...ADS/DHOF/ADM MARINE...ADS/DHOF
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 957 PM EDT Mon Aug 1 2022 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ052>057-021000- 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-Cecil-Southern Baltimore- Prince Georges-Anne Arundel-Charles-St. Marys-Calvert- Central and Southeast Montgomery-Central and Southeast Howard- Southeast Harford-Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Stafford-Spotsylvania- King George- 957 PM EDT Mon Aug 1 2022 This Hazardous Weather Outlook is for the Maryland portion of the Chesapeake Bay, Tidal Potomac River, and I-95 corridor through central Maryland, northern Virginia, and District of Columbia. .DAY ONE...Tonight An isolated severe storm capable of producing damaging gusts is possible late this evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508- WVZ050>053-055-021000- Washington-Frederick MD-Carroll-Northern Baltimore- Northwest Montgomery-Northwest Howard-Northwest Harford-Augusta- Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke-Nelson- Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper- Northern Fauquier-Southern Fauquier-Western Loudoun- Eastern Loudoun-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Hampshire-Morgan-Berkeley-Jefferson- Hardy- 957 PM EDT Mon Aug 1 2022 This Hazardous Weather Outlook is for portions of eastern West Virginia, northern and central Virginia, and central and western Maryland. .DAY ONE...Tonight An isolated severe storm capable of producing damaging gusts is possible late this evening, especially near and east of the Blue Ridge Mountains. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MDZ001-501-502-VAZ503-504-WVZ501>506-021000- Garrett-Extreme Western Allegany-Central and Eastern Allegany- Western Highland-Eastern Highland-Western Grant-Eastern Grant- Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 957 PM EDT Mon Aug 1 2022 This Hazardous Weather Outlook is for the Allegheny Front counties in western Maryland, eastern West Virginia, and Highland County Virginia. .DAY ONE...Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The Sterling radar (KLWX), 23 km away, was scanning. The volume nearest the first event began at 02:26 UTC.
6 thunderstorm wind. Local standard time, as filed.
Trees blew down along VA-622 Greggsville Road.
Trees blew down along VA-797 Mount Gilead Road.
Trees and large tree limbs blew down near Leesburg, including in the 300 block of Belmont Drive Southwest.
About 20 trees and large tree limbs were blown down near Meade Drive Southwest, Hawling Place Southwest, Harle Place Southwest, Connery Terrace Southwest, and Fairfield Way Southwest. One large tree limb fell onto a car. All damage was facing toward the east.
Several trees and large tree limbs blew down near VA-7 East Market Street.
Several trees and large tree limbs blew down near Lansdowne, including near Inova Loudoun Hospital and on Riverpoint Drive near Lansdowne Golf Course. Large tree limbs blew down along VA-641 Ashburn Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2022Every state in 2022This day in weather historyWarnings in Virginia, August 2022
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1036804, 1036805, 1036806, 1036807, 1036808, 1036809.