Several severe thunderstorms produced scattered wind damage from eastern West Virginia and western Maryland across northern and central Virginia.
Every event with a place to put it. Tap one for its entry below.
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.
Several severe thunderstorms produced scattered wind damage from eastern West Virginia and western Maryland across northern and central Virginia.
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 31, 1:55 PM EST, 51 minutes earlier.
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 255 PM EDT Sat Aug 31 2024 .SYNOPSIS... A warm front lifting north through the region will bring showers and thunderstorms to the forecast area this afternoon and into the evening. Showers and thunderstorms continue on Sunday as a cold front moves in from the northwest. In the wake of the frontal boundary, high pressure builds in with dry conditions and seasonable temperatures expected next week. && .NEAR TERM /THROUGH TONIGHT/... As of 2PM, convection is initiating along the westernmost portions of the forecast area where breaks in the clouds have lead to favorable conditions. Looking at current satellite imagery, there is a clear line in cloud cover with those west of the Blue Ridge in minimal cloud cover and convection initiating. East of the Blue Ridge, a substantial cloud deck is indicative of a more stable air mass. In the past few hours, more breaks in the clouds have developed east of the BR, however, mostly cloudy skies are expected through this afternoon for the I-95 corridor. There continues to be great model uncertainty with regards to the severe potential east of the Blue Ridge. The 12Z NAMNST is more reserved showing storms quickly becoming disorganized as they move east of the Blue Ridge. Meanwhile the 12Z HRRR shows mostly cloudy to cloudy skies, which is expected to inhibit any severe potential with the airmass remaining more stable. In contrast, breaks in the clouds out west has lead to destabilization of the atmosphere. Favorable CAPE and shear values lead to increased confidence in strong to severe thunderstorms in that area. SPC has the area west of the Blue Ridge in a slight risk for severe weather with the primary hazards being damaging wind gusts and hail. In addition to a severe weather threat, precipitable water values nearing or exceeding 2 inches combined with weak steering flow will lead to a risk for isolated to scattered instances of flooding. Best chances for this is west of the Blue Ridge, particularly stretching from Allegany County MD south to Rockingham County VA. Recent rainfall has led to reduced FFG in sensitive areas. Generally, guidance has backed off on widespread heavy precipitation so held off on a Flood Watch though flood prone locations with recent rainfall will be vulnerable. && .SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/... The aforementioned cold front is expected to move through the forecast area throughout the day on Sunday. Showers and thunderstorms continue as the front moves through the area, with dry conditions expected in the wake of the frontal boundary. Conditions will quickly dry out behind the front with precipitation timing highly reliant on how quickly the front moves through. Current guidance has showers and thunderstorms out of the area around sunset on Sunday .Remnant cloud cover from precipitation today could inhibit convection initiation, however, parameters will be favorable for storms to be strong to severe with SPC having a marginal risk for the area. By Monday morning, the frontal boundary is expected to be well south of the area located along the VA/NC border. Any precipitation associated with the frontal boundary will likely stay to our south as high pressure brings dry conditions areawide. High pressure located over the Great Lakes region will build in from the northwest throughout the day, leading to decreased cloud cover. Temperatures will be in the upper 70s to mid 80s on Sunday with overnight lows in the upper 50s to mid 60s. On Monday, cooler temperatures are expected in the wake of the frontal boundary. Highs will be in the 70s to low 80s with higher elevations in the 60s. Overnight low temperatures will be in the 50s for most. && .LONG TERM /TUESDAY THROUGH SATURDAY/... Surface high pressure will slowly slide from the Great Lakes toward New England Tuesday and Wednesday as upper level ridging builds overhead. Dry weather and below normal temperatures are expected (highs in 70s to near 80, lows in 50s to near 60). The end of the week is a bit more uncertain due to a trough digging southeastward from central Canada. If the trough is amplified and fast enough, it may draw moisture northward from a stationary front/low pressure wave across the deep south, introducing rain chances as early as Thursday or Friday. Slower and/or less amplified solutions result in less interaction with the southern stream, and we'd likely wait until the northern stream cold front to bring rain chances Friday or Saturday. Either way this plays out, onshore flow around the high to the northeast will prevent a return of any heat, and temperatures will likely remain below normal through the week. Likewise the chance for thunderstorms with any of these systems will be somewhat limited. && .AVIATION /18Z SATURDAY THROUGH THURSDAY/... There continues to be a good bit of model uncertainty with showers and thunderstorms this afternoon. Confidence remains high for storms west of the Blue Ridge, so kept TSRA in KMRB and KCHO. However, a more stable airmass east of the Blue Ridge results in uncertainty on how far east thunderstorms will make it. Kept VCSH in the TAFs for KIAD, KDCA, and KBWI due to uncertainty but can't rule out thunder this afternoon. Sub-VFR conditions are expected this evening as reduced ceiling and visibilities expected during precipitation at all terminals. IFR to MVFR ceilings are expected through Sunday morning. A cold front will lead to additional showers and thunderstorms on Sunday with dry conditions expected Monday. No significant weather Tuesday and Wednesday as high pressure slides by to the north. In a worst case scenario, sub-VFR conditions and rain may move into the area Thursday depending on the track of a low pressure system across the southeastern states. && .MARINE... Southerly channeling will result in marginal SCA conditions tonight, primarily in the Chesapeake Bay. Winds increase Sunday night into Monday morning with a Small Craft Advisory likely needed. Showers and possible thunderstorms are expected to impact the waters today and tomorrow. Winds shift to north/northwesterly Sunday and Monday. High pressure builds in over the area on Monday, leading to dry conditions. Small Craft Advisories may be needed into Tuesday until northerly winds gradually subside. High pressure should provide lighter winds Wednesday with direction becoming onshore. Marginal SCA conditions could develop Thursday depending on the pressure gradient and ensuing strength of the onshore flow. && .TIDES/COASTAL FLOODING... Tidal anomalies have been rising rapidly and likely remain elevated enough to result in Action stages around the times of high tide through Sunday. Annapolis is expected to hit minor flood stage during the high tide cycle Sunday morning. Other vulnerable shoreline will be close to reaching minor flood stage. Water levels should be decrease on Monday behind a cold front. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...Coastal Flood Advisory until 8 AM EDT Sunday for MDZ014. VA...None. WV...None. MARINE...None. && SYNOPSIS...AVS NEAR TERM...AVS SHORT TERM...AVS LONG TERM...ADM AVIATION...AVS/ADM MARINE...AVS/ADM TIDES/COASTAL FLOODING...LWX
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 333 PM EDT Sat Aug 31 2024 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ053>057-527-011000- 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-Fairfax-Arlington/Falls Church/Alexandria- Stafford-Spotsylvania-King George- Central and Southeast Prince William/Manassas/Manassas Park- 333 PM EDT Sat Aug 31 2024 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...This Afternoon and Tonight An isolated severe thunderstorm capable of producing damaging wind gusts of 60 mph and hail is possible this evening. .DAYS TWO THROUGH SEVEN...Sunday through Friday 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- 526-WVZ050>053-055-011000- 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-Northwest Prince William-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 333 PM EDT Sat Aug 31 2024 This Hazardous Weather Outlook is for portions of eastern West Virginia, northern and central Virginia, and central and western Maryland. .DAY ONE...This Afternoon and Tonight A Severe Thunderstorm Watch is in effect until 7 PM for all counties and cities west of the Blue Ridge Mountains and Morgan County. Elsewhere, isolated severe thunderstorms with damaging wind gusts remain possible this afternoon and early evening. Heavy rainfall may lead to scattered instances of flooding this afternoon and evening, especially along and west of the Blue Ridge Mountains. .DAYS TWO THROUGH SEVEN...Sunday through Friday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is requested west of the Blue Ridge Mountains. Please report hazardous weather to the National Weather Service according to standard operating procedures. MDZ001-501-502-VAZ503-504-WVZ501>506-011000- Garrett-Extreme Western Allegany-Central and Eastern Allegany- Western Highland-Eastern Highland-Western Grant-Eastern Grant- Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 333 PM EDT Sat Aug 31 2024 This Hazardous Weather Outlook is for the Allegheny Front counties in western Maryland, eastern West Virginia, and Highland County Virginia. .DAY ONE...This Afternoon and Tonight A Severe Thunderstorm Watch is in effect until 7 PM for the entire outlook area. Heavy rainfall may lead to scattered instances of flooding this afternoon and evening. .DAYS TWO THROUGH SEVEN...Sunday through Friday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is requested. Please report hazardous weather to the National Weather Service according to standard operating procedures.
The Sterling radar (KLWX), 142 km away, was scanning. The volume nearest the first event began at 19:46 UTC.
3 thunderstorm wind. Local standard time, as filed.
Trees blew down onto a house in the 1400 block of MD-36 Mount Savage Road Northwest.
There were multiple reports of trees and wires blown down across Allegany County. The hardest hit areas were Cumberland and Ridgeley.
Trees blew down at the intersection of Oliver Beltz Road Southeast and Williams Road Southeast.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2024Every state in 2024This day in weather historyWarnings in Maryland, August 2024
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: 1207753, 1207754, 1207755.