A couple bands of showers and thunderstorms produced localized wind damage and hail ahead of a weakening cold front.
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 bands of showers and thunderstorms produced localized wind damage and hail ahead of a weakening cold front.
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 Jun 27, 9:27 AM EST, 3 hours 45 minutes earlier.
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1027 AM EDT Tue Jun 27 2023 .SYNOPSIS... An upper trough centered to our north will slowly progress eastward toward New England through Thursday. High pressure will build in at the surface for Thursday and Friday. An area of low pressure will track into the Great Lakes this weekend. && .NEAR TERM /THROUGH TONIGHT/... A cold front will progress through the area this afternoon. Skies are currently partly to mostly sunny along and east of I-81, while they are mostly cloudy to cloudy to the west of I-81. Some early morning shower activity that worked its way through and near Baltimore and Northeast Maryland are exiting into northern Delaware. Additional light showers are moving across Pendleton and southern Hardy Counties. With plenty of sunshine east of I-81 and a Marginal Severe Thunderstorm Risk for this area and an approaching cold front, additional heavier showers and a couple of stronger to severe thunderstorms will develop. Showers and a few embedded thunderstorms should begin to develop along I-81 between 11 am and 1 pm. These showers and thunderstorms will then steadily progress eastward across the area this afternoon along with the system's cold front. This activity is still expected to clear the area by around 7 or 8 PM, with dry conditions expected overnight. The best chance for showers and storms in the DC/Baltimore metros will be between 2 pm and 6 pm. Previous discussion... Thunderstorms late this morning and into this afternoon will have around 1000 J/kg of MLCAPE to work with, along with relatively weak winds through the depth of the troposphere (25 knots or less up to the equilibrium level). Thermodynamically speaking, model soundings show a well- mixed sub-cloud layer, with relatively steep low- level lapse rates, but then deep saturation above the LCL. This deep saturation will limit DCAPE and resultant evaporatively driven downburst potential. However, some gusty winds can't be ruled out in association with the strongest storms. Flooding potential also looks to be very low to near zero, as storms will be rather progressive, and move on toward the east at a decent clip. && .SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/... By daybreak Wednesday, the mid-upper level trough axis will extend from Lake Ontario southward toward Chesapeake Bay. This trough will continue to slowly drift off toward the east during the day Wednesday, before once again closing off into an upper low Thursday as it works across eastern NY and New England. This will place us in northwesterly flow aloft both days. Large scale subsidence in the wake of the trough and dry advection in the mid-levels will lead to dry conditions both days. Wednesday will feature a mix of sun and clouds, with skies turning mostly sunny on Thursday. The only slight chance for a shower will be across far northeastern Maryland Wednesday afternoon. Temperatures will run slightly below normal on Wednesday (upper 70s to mid 80s for most, upper 60s mountains) before moderating back toward normal on Thursday (mid-upper 80s for most, with 70s in the mountains). Global guidance is in good agreement that an MCS will form in northwesterly flow across the Ohio Valley Thursday evening and then track southeastward toward the central Appalachians late Thursday night. Nearly all solutions have this MCS tracking to the south of our forecast area, eventually reaching SW Virginia around daybreak Friday. If model solutions were to trend further north, it could impact far southwestern portions of the forecast area. For now, it looks like conditions should remain dry for all. && .LONG TERM /FRIDAY THROUGH MONDAY/... The key players during the period will be a stout upper ridge across the Lower Mississippi Valley into the Mid-South, and lowering heights across the Great Lakes. Upstream from the mean ridge is an elongated positively-tilted trough arcing across the Central Rockies back into the Four Corners. Collectively, the pair of troughs are set to track eastward toward the eastern third of the country while flattening the southern U.S. ridge. While the longwave pattern is fairly well resolved by global ensembles, there are plenty of uncertainties sorting out the shorter wavelengths and mesoscale details. This degree of analysis is better handled by high- resolution models which only forecast out to 48 hours. Suffice to say, expect a fairly typical summertime pattern to finish out June and entering early July. A chance of showers and thunderstorms looms each afternoon and evening, but more so as the upstream trough moves through this weekend. At the surface, Friday will mark the start of a multi-day period of southerly warm/moist advection. A warm front initially dangling over the Carolinas is forecast to quickly lift northward into the Mid- Atlantic. The eventual passage of this boundary leaves the region within a broadening warm sector for the upcoming weekend. High temperatures push back into the upper 80s to near 90 degrees, accompanied by heat indices reaching the mid 90s. Perturbations from the approaching trough should interact with this unstable air mass to bring increasing shower/thunderstorm coverage. Based on the latest forecast, the attendant cold front pushes through early Monday. However, details that far out will likely change. If this frontal passage better aligns with peak heating, then thunderstorm strength would be increased. With height falls becoming weak to neutral, this boundary may linger nearby which would maintain shower chances into early next week. && .AVIATION /14Z TUESDAY THROUGH SATURDAY/... Conditions are currently VFR at all terminals and are expected to remain VFR throughout this afternoon. Each of the terminals will have a 2-4 hour window where showers and thunderstorms may be possible as a cold front tracks across the area from west to east. This window could start as early as noon at MRB, with thunderstorms clearing the area by 8 PM. Winds this afternoon will turn westerly behind the cold front this afternoon. VFR conditions are expected for both Wednesday and Thursday. Winds will be out of the WNW on Wednesday, and then light and variable on Thursday. Southerly warm advection ensues for Friday and into the weekend. Increased vertical mixing during the day could lead to gusts up to 15 knots or so. Shower and thunderstorm chances increase through the period which may lead to some restrictions. Aside from such showers, VFR conditions are likely otherwise. && .MARINE... Sub-SCA level winds are expected this afternoon. Winds will turn out of the west later this afternoon into this evening behind a cold front. A line of showers and thunderstorms will accompany this cold front, and SMWs will likely be needed for portions of the waters during the afternoon and evening hours, with gusty winds being the primary threat. Sub- SCA winds are expected on both Wednesday and Thursday (out of the WNW Wednesday, and light and variable on Thursday). Increasing southerly flow may lead to some channeling effects, particularly across lower sections of the Chesapeake Bay. The current forecast shows Small Craft Advisory caliber winds Friday afternoon through early Friday night, and again the same times on Saturday. Shower and thunderstorm chances increase from Friday and into the weekend. Special Marine Warnings are possible depending on the strength of such convection. && .TIDES/COASTAL FLOODING... Tidal anomalies remaining slightly elevated could push Annapolis and the D.C. Southwest Waterfront into the Action stage during the next high tide. However, expect anomalies to slowly fall into the middle of the week behind the cold front. Stevens Ensembles do show another rise late in the week owing to return southerly flow. && .EQUIPMENT... KLWX will be down for approximately ten days for an important upgrade. Technicians will refurbish and replace the pedestal, one of the most critical components of the radar, which is necessary for antenna rotation and positioning to capture data in all directions. The components are extremely heavy and will require the radome to be removed by crane and replaced when the work is completed. Estimated return to service is June 30th, barring any unexpected issues. During the downtime, adjacent radars will be available, including: Wakefield, VA (KAKQ), Roanoke, VA (KFCX), Dover, DE (KDOX), Charleston, WV (KRLX), Pittsburgh, PA (KPBZ), State College, PA (KCCX), and Fort Dix, NJ (KDIX)...also FAA Terminal Doppler radars for Dulles (TIAD), Reagan National (TDCA), Thurgood Marshall BWI (TBWI), and Joint Base Andrews (TADW). For direct access to any of these surrounding radar sites, visit the following Web page: https:/radar.weather.gov/ && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...None. VA...None. WV...None. MARINE...None. && SYNOPSIS...KJP NEAR TERM...KLW/KJP SHORT TERM...KJP LONG TERM...BRO AVIATION...BRO/KLW MARINE...BRO/KLW TIDES/COASTAL FLOODING...KLW EQUIPMENT...KLW
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 522 AM EDT Tue Jun 27 2023 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ053>057-527-280930- 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- 522 AM EDT Tue Jun 27 2023 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...Today and Tonight Isolated severe thunderstorms are possible this afternoon and evening. Damaging winds are the primary threat. .DAYS TWO THROUGH SEVEN...Wednesday through Monday 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>053-055-280930- 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- 522 AM EDT Tue Jun 27 2023 This Hazardous Weather Outlook is for portions of eastern West Virginia, northern and central Virginia, and central and western Maryland. .DAY ONE...Today and Tonight Isolated severe thunderstorms are possible this afternoon and evening across northeastern Maryland. Damaging winds are the primary threat. .DAYS TWO THROUGH SEVEN...Wednesday through Monday 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>506-280930- Garrett-Extreme Western Allegany-Central and Eastern Allegany- Western Highland-Eastern Highland-Western Grant-Eastern Grant- Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 522 AM EDT Tue Jun 27 2023 This Hazardous Weather Outlook is for the Allegheny Front counties in western Maryland, eastern West Virginia, and Highland County Virginia. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Preliminary Local Storm Report...Summary
National Weather Service Baltimore MD/Washington DC
907 AM EDT Tue Jun 27 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0230 PM Tstm Wnd Dmg 1 NNW Wolfe Mill 39.69N 78.74W
06/26/2023 Allegany MD 911 Call Center
A tree blew down near the 12300 block of Winfield Dr
NE.
0236 PM Tstm Wnd Dmg 3 WNW Pleasant Valley 39.72N 78.70W
06/26/2023 Allegany MD 911 Call Center
A tree and wires blew down across the road near Hazen
Rd and Evelyn Dr.
0342 PM Tstm Wnd Dmg 2 N Greenville 38.03N 79.15W
06/26/2023 Augusta VA Broadcast Media
A large limb fell into the road along Rt 701 in the
Riverheads area.
0350 PM Hail 4 E Greenville 38.01N 79.09W
06/26/2023 M1.00 inch Augusta VA Broadcast Media
0353 PM Tstm Wnd Dmg 4 NE Ridgeville 39.38N 78.94W
06/26/2023 Mineral WV 911 Call Center
A tree was reported down on Fried Meat Ridge Rd.
0354 PM Tstm Wnd Dmg 1 SW Stuarts Draft 38.02N 79.03W
06/26/2023 Augusta VA 911 Call Center
A tree was reported down near the 500 block of Draft
Ave.
0400 PM Hail 3 SE Harrisonburg 38.40N 78.83W
06/26/2023 M1.00 inch Rockingham VA Broadcast Media
Quarter sized hail reported on the 4000 block of Hudson
Circle
0400 PM Tstm Wnd Dmg 3 NNW Greenville 38.04N 79.17W
06/26/2023 Augusta VA 911 Call Center
Multiple trees and lines down in the area of
Howardsville Rd and Berry Moore Rd.
0407 PM Tstm Wnd Dmg 2 ENE Montevideo 38.37N 78.73W
06/26/2023 Rockingham VA 911 Call Center
Lines and trees reported down in McGaheysville.
0410 PM Hail 3 E Harrisonburg 38.43N 78.83W
06/26/2023 M1.00 inch Rockingham VA Public
Public reports quarter-sized hail near intersection of
Smithland Road and Keezletown Road.
0412 PM Hail Afton 38.03N 78.84W
06/26/2023 M1.00 inch Nelson VA Broadcast Media
Broadcast media relayed report of quarter-sized hail at
Afton. Time estimated from radar.
0418 PM Tstm Wnd Dmg 2 N Rocky Bar 38.37N 78.70W
06/26/2023 Rockingham VA 911 Call Center
Two trees fell down near the 1800 block of Dave Berry
Rd, including one tree falling on a house.
0418 PM Hail 2 E Montevideo 38.37N 78.73W
06/26/2023 M1.50 inch Rockingham VA Public
0421 PM Hail 1 NNW Stuarts Draft 38.04N 79.04W
06/26/2023 M1.00 inch Augusta VA Trained Spotter
0424 PM Tstm Wnd Dmg Elkton 38.41N 78.62W
06/26/2023 Rockingham VA 911 Call Center
Lines were reported down on the road in Elkton.
0430 PM Tstm Wnd Dmg 4 SW Hermitage 38.10N 78.96W
06/26/2023 Augusta VA 911 Call Center
Tree down near Kiddsville Rd and Long Meadow Rd.
0430 PM Hail Massanutten 38.41N 78.74W
06/26/2023 M1.00 inch Rockingham VA Broadcast Media
Broadcast media relayed public report of quarter-sized
hail in Massanutten.
0448 PM Hail 2 NNW North Garden 37.96N 78.64W
06/26/2023 M1.00 inch Albemarle VA Trained Spotter
0454 PM Tstm Wnd Dmg 1 S Lovingston 37.75N 78.88W
06/26/2023 Nelson VA 911 Call Center
A tree was reported down near Front St on US-29 in
Lovingston.
0505 PM Hail 1 WNW Carrsbrook 38.10N 78.48W
06/26/2023 M0.75 inch Albemarle VA Trained Spotter
Spotter reports dime sized hail in Charlottesville.
0508 PM Hail 2 NE Arrington 37.71N 78.88W
06/26/2023 E1.00 inch Nelson VA Public
0508 PM Hail 3 WSW Charlottesville 38.01N 78.53W
06/26/2023 M0.75 inch Albemarle VA Public
Public reports penny sized hail in Charlottesville near
intersection of Redfields Rd and Pebble Hill Ct.
0526 PM Tstm Wnd Dmg 4 SSE Elma 37.70N 78.78W
06/26/2023 Nelson VA 911 Call Center
Several trees down between Wingina, VA and Shipman, VA.
0542 PM Tstm Wnd Dmg 2 N Shady Grove 39.67N 78.15W
06/26/2023 Morgan WV 911 Call Center
Morgan County 911 Center reports tree down on 1600
block of Culp Road. Time estimated from radar.
0542 PM Tstm Wnd Dmg 2 NW Shady Grove 39.66N 78.17W
06/26/2023 Morgan WV 911 Call Center
Morgan County 911 Center reports tree down on 2300
block of Pious Ridge Road. Time estimated from radar.
0620 PM Tstm Wnd Dmg 1 SSE Pikesville 39.37N 76.69W
06/26/2023 Baltimore MD County Emergy Mgmt
Tree fell on apartment building and damaged roof on the
6000 block of Sanzo Road.
0630 PM Hail 2 SSW Thurmont 39.59N 77.42W
06/26/2023 M1.00 inch Frederick MD Trained Spotter
Trained spotter reports quarter-sized hail in Thurmont.
0642 PM Tstm Wnd Dmg 2 NW Towson 39.41N 76.64W
06/26/2023 Baltimore MD County Emergy Mgmt
Tree reported down on car near the intersection of
Joppa Road and Bellona Ave.
0643 PM Hail 1 SSE Towson 39.38N 76.62W
06/26/2023 M0.75 inch Baltimore MD Trained Spotter
Trained spotter reports penny sized hail near Towson.
0648 PM Hail 4 NNW Cockeysville 39.53N 76.65W
06/26/2023 M0.75 inch Baltimore MD Trained Spotter
Trained spotter reports hail up to dime size in Sparks,
MD.
0648 PM Tstm Wnd Dmg 1 ENE Towson 39.40N 76.60W
06/26/2023 Baltimore MD 911 Call Center
About 2 dozen reports of downed trees and powerlines
throughout Towson.
0713 PM Tstm Wnd Dmg 5 S Norrisville 39.64N 76.55W
06/26/2023 Harford MD Public
Tree down near the intersection of Route 23 & Route
439.
0715 PM Hail 1 SE Bentley Springs 39.66N 76.65W
06/26/2023 M0.88 inch Baltimore MD Trained Spotter
Trained spotter reports nickel sized hail.
0715 PM Hail 1 E Bentley Springs 39.67N 76.65W
06/26/2023 M1.00 inch Baltimore MD Trained Spotter
Trained spotter reports quarter-sized hail in Parkton.
0724 PM Tstm Wnd Gst 4 W Edgemere 39.22N 76.53W
06/26/2023 M39 mph ANZ538 MD Official NWS Obs
0902 PM Hail 1 ENE Earlysville 38.16N 78.47W
06/26/2023 M0.75 inch Albemarle VA Trained Spotter
Trained spotter reported hail up to dime size in
Earlysville.
0904 PM Tstm Wnd Dmg Abingdon 39.47N 76.29W
06/26/2023 Harford MD 911 Call Center
A tree was reported down near Abingdon Rd and Federal
Ln.
0919 PM Tstm Wnd Gst Point Lookout 38.04N 76.32W
06/26/2023 M40 mph ANZ537 MD Buoy
Point Lookout peak gust of 35KT/40MPH.
0930 PM Tstm Wnd Gst 1 S Baltimore 39.28N 76.61W
06/26/2023 M52 mph Baltimore City MD Mesonet
0948 PM Tstm Wnd Gst 13 SE Fishing Creek 38.22N 76.04W
06/26/2023 M39 mph ANZ543 MD Buoy
1136 PM Tstm Wnd Gst 8 E Smith Island 37.97N 75.88W
06/26/2023 M54 mph ANZ543 MD Buoy
0106 AM Tstm Wnd Gst 8 E Smith Island 37.97N 75.88W
06/27/2023 M39 mph ANZ543 MD Buoy
0111 AM Tstm Wnd Gst 8 E Smith Island 37.97N 75.88W
06/27/2023 M44 mph ANZ543 MD Buoy
&&
EVENT NUMBER LWX2301155 LWX2301140 LWX2301143 LWX2301141 LWX2301145
LWX2301149 LWX2301142 LWX2301146 LWX2301153 LWX2301147 LWX2301156
LWX2301151 LWX2301181 LWX2301144 LWX2301152 LWX2301148 LWX2301154
LWX2301150 LWX2301170 LWX2301164 LWX2301157 LWX2301165 LWX2301169
LWX2301159 LWX2301160 LWX2301158 LWX2301161 LWX2301162 LWX2301166
LWX2301167 LWX2301174 LWX2301182 LWX2301163 LWX2301168 LWX2301172
LWX2301171 LWX2301176 LWX2301173 LWX2301175 LWX2301177 LWX2301178
LWX2301179 LWX2301180
BJLThe national radar mosaic for the moment the first event began.
6 thunderstorm wind. Local standard time, as filed.
There were a couple reports of trees that blew down on the south side of Reston, including on VA-665 Fox Mill Road near Thoroughbred Road, and near the intersection of South Lakes Drive and Soapstone Drive.
Several trees and wires blew down north of Wolf Trap, including along VA-675 Browns Mill Road between VA-702 Beulah Road and Windstone Drive, on VA-676 Towlston Road near Dara Lane, and on Galium Court near Union Church Road.
There were a few reports of trees that blew down in Tysons Corner, including on the ramp from eastbound VA-7 Leesburg Pike to northbound VA-123 Chain Bridge Road, and along VA-807 Old Falls Road.
Multiple trees blew down near the intersection of VA-685 Swinks Mill Road and VA-738 Old Dominion Drive.
Trees blew down onto VA-620 Braddock Road near Burke Station Road.
Trees blew down on Heather Brook Court near Ridge Drive.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2023Every state in 2023This day in weather historyWarnings in Virginia, June 2023
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: 1097318, 1097319, 1097320, 1097322, 1097323, 1097324.