A couple of thunderstorms produced localized downbursts resulting in tree damage.
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.
A couple of thunderstorms produced localized downbursts resulting in tree damage.
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 22, 1:21 PM EST, 2 hours 35 minutes earlier.
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 221 PM EDT Mon Aug 22 2022 .SYNOPSIS... A cold front will slowly cross the Mid-Atlantic from west to east through tonight. The front is expected to stall offshore and weaken during the middle of the week as high pressure noses in from the Ohio River Valley, and Bermuda high pressure builds offshore. Another frontal system will likely approach late in the week. && .NEAR TERM /THROUGH TONIGHT/... Convection is already firing ahead of an approaching cold front, currently located over central WV and western PA. Thus far, convection has struggled to do much more than produce a lightning strike here and there. While low-level lapse rates and MLCAPE are decent at this time, the mid-level lapse rates are <6C/km. This is making it extremely difficult for convection to get tall and tap into the ~30 kts of deep-layer shear. Storm coverage and intensity will likely intensify as the afternoon progresses and into this evening as the cold front moves through. Given the parameters in place for severe weather (CAPE around 1000-2000 J/kg, wind shear of around 30 kts and DCAPE around 800-900 J/kg) there should be at least a few cells that manage to tap into that. Would anticipate at least few severe storms this afternoon, with damaging winds being the primary threat. Activity should reach a peak from mid to late afternoon between I-81 and I-95, before gradually diminishing and pushing offshore this evening. An isolated instance of flooding or two can't be ruled out, either, especially near the metros or areas that received heavier rain yesterday and this morning if there is an aptly placed cell merger or multiple rounds of storms. Overall the threat appears too low for a watch given relatively progressive storm motions and a bit of dry air moving in aloft which will likely result in slightly less efficient rainfall production when compared to yesterday. Gradual clearing is expected behind the front, but with more abundant dry air slow to follow, fog may form. Low temperatures are expected to drop back into the 60s (about 10 degrees cooler for the mountains). && .SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... The aforementioned cold front pushes offshore and stalls just to our southeast on Tuesday. Meanwhile, the primary upper trough slides by across our north. This will allow for a few showers along the MD/PA border, and perhaps even along the Bay as well associated with the front. Would not expect a lot of thunder though, and certainly not looking at much in terms of a severe threat. By Wednesday, much drier air pours into the region as high pressure takes hold. Dry and seasonable conditions expected for Wednesday. Temperatures on both days will be near seasonal averages, with highs in the 80s and lows in the 60s. && .LONG TERM /THURSDAY THROUGH SUNDAY/... A fairly typical late summertime pattern unfolds across the region from Thursday and into the weekend. Within the mid/upper levels of the atmosphere, a strong upper low north of Hudson Bay will be connected to longwave troughing across eastern portions of North America. The more influential portion of this trough axis generally cuts off over New England through the remainder of the work week. This system eventually lifts up into the higher latitudes while shortwave ridging treks through for the weekend. This allows for some building of the height fields as broad troughing extends across the northern tier of the country. Although there are some detail differences amongst the global ensemble means, the general pattern is well agreed upon. At the surface, the main feature of interest is a cold front set to approach from the Lower Great Lakes early Friday morning. Overall isobaric gradients are on the weaker side which suggests this boundary may be loosely defined. As this frontal zone presses eastward, the threat for showers and thunderstorms return to the typical 25-35 percent chances on Friday and Saturday. This system eventually clears the region over the weekend with high pressure building offshore of New England by Sunday. The multi-global ensemble temperature forecast keeps daily readings fairly close to late August normals. Any spread is on the lower side given convective threats which would cool temperatures off. However, the current forecast keeps daily highs in the mid/upper 80s with lows staying around the 60s (near 70 degrees around the DC/Baltimore city centers). For higher elevation locations, forecast highs are in the upper 60s to 70s, while lows fall into the mid 50s to low 60s. && .AVIATION /18Z MONDAY THROUGH SATURDAY/... Shower and thunderstorms will move across the forecast area from west to east this afternoon into the evening as a cold front pushes through. AMDs will likely be needed to account for near term trends and timing through the afternoon, though I have tried to at least have a few hour period where confidence is highest. Fog is possible again tonight after the front clears in areas where it rains more today. For Tuesday and Wednesday, high pressure takes control, leading to VFR conditions area-wide. Aside from any diurnally driven showers and thunderstorms, VFR conditions are likely to conclude the work week. Prevailing winds waver between the south to southwesterly direction, generally on the lighter side. && .MARINE... So far today the winds over the waters have been well below SCA criteria. It is possible that we approach SCA criteria this afternoon ahead of a frontal passage, at least briefly. Aside from that though, showers and storms are likely this afternoon and evening. Some storms could produce gusts in excess of gale force and frequent lightning. Winds will become northwesterly behind the front tonight through Wednesday, generally at sub-SCA speeds. A few showers are possible Tuesday afternoon as the cold front stalls offshore. Not expecting them to bring much wind with them however. Dry conditions with light winds expected Tuesday evening through Wednesday night. Forecast winds across the marine waters stay out of the south to southwesterly direction. Besides some afternoon upticks to around 15 knots, wind fields stay on the light side. Convective chances slightly increase by Friday ahead of a cold front near the Lower Great Lakes. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...None. VA...None. WV...None. MARINE...None. && SYNOPSIS...DHOF NEAR TERM...CJL SHORT TERM...CJL LONG TERM...BRO AVIATION...BRO/CJL MARINE...BRO/CJL
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 448 PM EDT Mon Aug 22 2022 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ052>057-231200- 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- 448 PM EDT Mon Aug 22 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 Scattered to numerous showers and thunderstorms this evening may result in a few isolated instances of wind damage or flooding. .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>053-055-231200- 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- 448 PM EDT Mon Aug 22 2022 This Hazardous Weather Outlook is for portions of eastern West Virginia, northern and central Virginia, and central and western Maryland. .DAY ONE...Tonight Scattered to numerous showers and thunderstorms this evening may result in a few isolated instances of wind damage. .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>506-231200- Garrett-Extreme Western Allegany-Central and Eastern Allegany- Western Highland-Eastern Highland-Western Grant-Eastern Grant- Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 448 PM EDT Mon Aug 22 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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1218 PM EDT MON AUG 22 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0820 AM FLOOD 1 S JARRETTSVILLE 39.58N 76.47W
08/22/2022 HARFORD MD TRAINED SPOTTER
HIGH STANDING WATER ON ROAD WHERE ROUTE 165 AND FURNACE
ROAD MEET. ADDITIONAL REPORTS NEARBY AROUND ROUTE 23 AND
MORSE ROAD.
&&
EVENT NUMBER LWX2204917
BROThe Sterling radar (KLWX), 61 km away, was scanning. The volume nearest the first event began at 20:56 UTC.
2 thunderstorm wind. Local standard time, as filed.
Trees and tree limbs blew down near and southeast of the City of Winchester, including near the intersection of US-522 Front Royal Pike and VA-776 Bufflick Road.
Trees blew down in the 9400 block of US-15 James Madison Highway, including a large pine tree that blocked all travel lanes.
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: 1040459, 1040460.