Canadian high pressure allowed temperature to drop to near or just below freezing across western Virginia.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
Canadian high pressure allowed temperature to drop to near or just below freezing across western 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 Apr 30, 8:31 PM EST, 3 hours 29 minutes earlier.
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
931 PM EDT Fri Apr 30 2021
.SYNOPSIS...
High pressure will build in from the Great Lakes over the
weekend, then shift offshore next week as a frontal system
approaches from the Midwest.
&&
.NEAR TERM /TONIGHT/...
Strong low pressure resides off the New England coast this evening
as Canadian high pressure builds into the Midwest. A cold front is
pushing southward through our region, exiting our southern zones
this evening. We remain wedged between the strengthening low and
building high, resulting in a tight pressure gradient across the Mid
Atlantic. Winds have lessened over the past few hours, so we have
cancelled the High Wind Warning and left a Wind Advisory in place
for the Baltimore and Washington Metropolitan areas and portions of
northern/central Virginia through 2am tonight. Much of the
precipitation associated with the frontal passage and upper trough
swinging through are exiting our Chesapeake Bay waters, but can't
rule out a stray shower or sprinkle the next couple of hours.
Temperatures tonight will be noticeably colder than the past few
nights, falling down into the upper 30s to middle 40s for most,
while locations along the Allegheny Front will flirt with the
freezing mark. As a result, a Freeze Warning remains in effect into
Saturday morning for these areas. Factor in the gusty northwest
winds overnight, wind chills will be in the 30s for much of the
area, with 20s in the higher elevations.
&&
.SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/...
High pressure of Canadian origin will build in from the Great Lakes
and Midwest this weekend offering dry and seasonable conditions.
Saturday will be blustery to start, but the wind should slacken off
significantly by late afternoon.
Clouds may begin to increase late in the weekend as high pressure
moves offshore. The wind will turn southwesterly leading to a
warming trend heading into early next week.
&&
.LONG TERM /MONDAY THROUGH FRIDAY/...
For the start of the work week, we'll see precip chances increase
throughout the day on Monday as a warm front moves north into the
area as a closed low that originated down in Texas continues to push
towards the northeast. As the low tracks to our north, a fairly non-
progressive associated cold front will lag behind it, bringing more
increased chances for precip and some isolated storms Monday through
Wednesday with multiple disturbances passing through.
As this front slowly moves through, we'll see an increased risk for
severe thunderstorms and flooding. ECMWF ensemble PWAT probabilities
for >=1.5" is 70% or higher east of the Blue Ridge Mountains for
this time period. GEFS members suggest 1500+ J/kg CAPE for Tuesday
afternoon with shear 30 to 35 knots. Will keep chance thunder in for
this time period and increase if need be once closer to the period.
After Wednesday evening, we'll start to see a brief area of high
pressure for Thursday before a deep area of low pressure affects the
area by Friday morning bringing the next chance for impactful
weather as well a decrease in temperatures following the frontal
passage.
&&
.AVIATION /01Z SATURDAY THROUGH WEDNESDAY/...
Gusty west northwest winds will persist through the overnight hours,
gusting 35 to 45 mph at times, while VFR conditions prevail. Winds
will continue to diminish late tonight and into Saturday morning
before dropping significantly by late Saturday afternoon as high
pressure builds overhead. This high pressure should bring VFR
conditions and a lighter SW wind Sunday.
VFR conditions expected at least Monday before some instances of sub-
VFR conditions become possible with impending showers and storms as
low pressure tracks to the north. An associated cold frontal passage
Tuesday/Wednesday will lead to increased instances of sub-VFR
conditions with showers and storms possible, some of which may be
severe.
&&
.MARINE...
Strengthening low pressure off the New England coast and building
Canadian high pressure over the Midwest will maintain strong and
gusty northwest winds over the marine district through the overnight
hours. A Gale Warning is in effect for all waters through daybreak
before winds are expected to diminish Saturday morning and
throughout the day, with SCA conditions likely lingering until
nightfall Saturday.
High pressure will build overhead Saturday night into Sunday with a
lighter wind becoming SW.
SCA conditions possible Monday and Tuesday with multiple rounds of
associated disturbances. SMWs possible Tuesday afternoon and
evening.
&&
.TIDES/COASTAL FLOODING...
Strong NW/offshore flow will cause water levels to decline through
Saturday morning, and will likely result in blowout tides.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...Wind Advisory until 2 AM EDT Saturday for DCZ001.
MD...Wind Advisory until 2 AM EDT Saturday for MDZ004>006-008-011-
013-014-016>018-503>508.
Freeze Warning until 9 AM EDT Saturday for MDZ001.
VA...Wind Advisory until 2 AM EDT Saturday for VAZ052>055-057-501-
502-505-506.
Freeze Warning until 9 AM EDT Saturday for VAZ503.
WV...Freeze Warning until 9 AM EDT Saturday for WVZ501-505.
MARINE...Gale Warning until 6 AM EDT Saturday for ANZ530>543.
&&
SYNOPSIS...DHOF
NEAR TERM...BKF/DHOF
SHORT TERM...DHOF
LONG TERM...ADM
AVIATION...BKF/DHOF/ADM
MARINE...BKF/BRO/DHOF/ADM
TIDES/COASTAL FLOODING...DHOFHazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 859 PM EDT Fri Apr 30 2021 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ052>057-011000- 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-Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Stafford-Spotsylvania- King George- 859 PM EDT Fri Apr 30 2021 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 A Wind Advisory is in effect for the Baltimore MD and Washington D.C. Metropolitan areas through this evening. A Gale Warning is in effect for all the waters through tonight. .DAYS TWO THROUGH SEVEN...Saturday through Thursday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Please send any wind reports to the National Weather Service. MDZ003>006-503-505-507-VAZ025>031-036>040-050-051-501-502-505>508- 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-Hampshire-Morgan-Berkeley-Jefferson- Hardy- 859 PM EDT Fri Apr 30 2021 This Hazardous Weather Outlook is for portions of eastern West Virginia, northern and central Virginia, and central and western Maryland. .DAY ONE...Tonight A Wind Advisory is in effect for portions of northern and central Maryland and the DC metro area in northern Virginia through this evening. .DAYS TWO THROUGH SEVEN...Saturday through Thursday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Please send any wind reports to the National Weather Service. 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- 859 PM EDT Fri Apr 30 2021 This Hazardous Weather Outlook is for the Allegheny Front counties in western Maryland, eastern West Virginia, and Highland County Virginia. .DAY ONE...Tonight A Freeze Warning is in effect starting at midnight for the higher elevations of the Alleghenies. .DAYS TWO THROUGH SEVEN...Saturday through Thursday The Freeze Warning continues through 9 AM Saturday morning. .SPOTTER INFORMATION STATEMENT... Please send any wind reports to the National Weather Service.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
919 PM EDT FRI APR 30 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 PM NON-TSTM WND GST DAVISON ARMY AIRFLD 38.72N 77.17W
04/30/2021 M58 MPH FAIRFAX VA AWOS
&&
EVENT NUMBER LWX2103952
CPBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
927 PM EDT FRI APR 30 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0515 PM NON-TSTM WND DMG 2 NE STOTLERS CROSSROAD 39.53N 78.20W
04/30/2021 MORGAN WV 911 CALL CENTER
TREE BLEW DOWN ON HIGHLAND RIDGE ROAD.
&&
EVENT NUMBER LWX2103953
CPBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
928 PM EDT FRI APR 30 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0342 PM NON-TSTM WND DMG 1 SSE HANCOCK 39.68N 78.17W
04/30/2021 MORGAN WV 911 CALL CENTER
TREE BLEW DOWN ON ROAD IN THE 4500 BLOCK OF FAIRVIEW
DRIVE.
&&
EVENT NUMBER LWX2103954
CPBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
929 PM EDT FRI APR 30 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0148 PM NON-TSTM WND DMG BERKELEY SPGS 39.63N 78.23W
04/30/2021 MORGAN WV 911 CALL CENTER
TREE BLEW DOWN ON ROAD IN THE 3300 BLOCK OF CHERRY RUN
ROAD.
&&
EVENT NUMBER LWX2103955
CPBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
931 PM EDT FRI APR 30 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0356 PM NON-TSTM WND DMG BERKELEY SPGS 39.63N 78.23W
04/30/2021 MORGAN WV 911 CALL CENTER
TREE BLEW DOWN ON ROAD ON POTOMAC ROAD NEAR MOOSE
VALLEY TRAIL.
&&
EVENT NUMBER LWX2103956
CPBPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
934 PM EDT FRI APR 30 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0622 AM NON-TSTM WND DMG 2 NNE DUNKIRK 38.75N 76.64W
04/30/2021 CALVERT MD DEPT OF HIGHWAYS
A TREE BLEW DOWN NEAR THE INTERSECTION OF MD-260 WEST
CHESAPEAKE BEACH ROAD AND BRICKHOUSE ROAD/JEWELL ROAD.
0756 AM NON-TSTM WND DMG 1 NW TYSONS CORNER 38.93N 77.24W
04/30/2021 FAIRFAX VA BROADCAST MEDIA
WIRES DOWN ACROSS ROAD NEAR INTERSECTION OF TYCO ROAD
AND VA-7
0800 AM NON-TSTM WND DMG 2 S WOODLAWN 39.61N 76.07W
04/30/2021 CECIL MD TRAINED SPOTTER
TREE DOWN ON THE 300 BLOCK OF CRAIGTOWN ROAD
1030 AM NON-TSTM WND DMG 1 N RAWLEY SPRINGS 38.52N 79.05W
04/30/2021 ROCKINGHAM VA EMERGENCY MNGR
*** 1 FATAL *** LARGE TREE BRANCH FELL ON A VEHICLE
CAUSING THE FATALITY OF AN OCCUPANT.
1056 AM NON-TSTM WND DMG 1 W LITTLE FALLS 38.93N 77.14W
04/30/2021 FAIRFAX VA DEPT OF HIGHWAYS
A TREE BLEW DOWN ON VA-695 KIRBY ROAD JUST SOUTH OF
PIMMIT RUN.
1106 AM NON-TSTM WND DMG 1 NNE THE I395 AND I495 38.80N 77.16W
04/30/2021 FAIRFAX VA DEPT OF HIGHWAYS
A TREE BLEW DOWN ON I-395 HENRY G. SHIRLEY MEMORIAL
HIGHWAY NEAR MILE MARKER 2.
1106 AM NON-TSTM WND DMG 2 SW GARRETT PARK 39.02N 77.11W
04/30/2021 MONTGOMERY MD BROADCAST MEDIA
*** 3 INJ *** TREE DOWN ON THE I-495/BELTWAY OUTER LOOP
AFTER I-270. CAUSED AN ACCIDENT WITH 3 INJURIES.
1109 AM NON-TSTM WND DMG FINKSBURG 39.50N 76.89W
04/30/2021 CARROLL MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON MD-141 BALTIMORE BOULEVARD NEAR
MD-91 EMORY ROAD/GAMBER ROAD.
1115 AM NON-TSTM WND DMG 1 WSW LONG MEADOW 39.68N 77.73W
04/30/2021 WASHINGTON MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ONTO NORTHBOUND I-81 NEAR MILE MARKER
9.
1115 AM NON-TSTM WND DMG ROMNEY 39.35N 78.76W
04/30/2021 HAMPSHIRE WV 911 CALL CENTER
TREE AND WIRES BLEW DOWN ON NORTHWESTERN TURNPIKE NEAR
SUNRISE SUMMIT.
1122 AM NON-TSTM WND DMG 1 NW PHILOMONT 39.07N 77.75W
04/30/2021 LOUDOUN VA DEPT OF HIGHWAYS
A TREE BLEW DOWN NEAR THE INTERSECTION OF VA-734
SNICKERSVILLE TURNPIKE AND VA-690 SILCOTT SPRINGS
ROAD/VA-611 SAINT LOUIS ROAD.
1125 AM NON-TSTM WND DMG 1 N UPPERVILLE 39.01N 77.88W
04/30/2021 LOUDOUN VA DEPT OF HIGHWAYS
TREE DOWN BLOCKING TRAPPE RD NEAR LLANGOLLEN RD.
1128 AM NON-TSTM WND DMG 1 SSE MONTCLAIR 38.59N 77.33W
04/30/2021 PRINCE WILLIAM VA DEPT OF HIGHWAYS
A TREE BLEW DOWN NEAR THE INTERSECTION OF VA-234
DUMFRIES ROAD AND EXETER DRIVE.
1129 AM NON-TSTM WND DMG 1 NW THE AMERICAN LEGIO 38.97N 77.20W
04/30/2021 MONTGOMERY MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON WESTBOUND CLARA BARTON PARKWAY NEAR
THE EXIT FOR THE R&D CENTER.
1132 AM NON-TSTM WND DMG 2 NNW TYSONS CORNER 38.95N 77.24W
04/30/2021 FAIRFAX VA DEPT OF HIGHWAYS
A TREE BLEW DOWN ON LAURELWOOD DRIVE.
1145 AM NON-TSTM WND DMG 3 SW CLEAR SPRING 39.63N 77.96W
04/30/2021 WASHINGTON MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON BOYD ROAD CLOSING THE ROAD.
1152 AM NON-TSTM WND DMG 2 WNW COCKEYSVILLE 39.49N 76.67W
04/30/2021 BALTIMORE MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON SOUTHBOUND I-83
BALTIMORE-HARRISBURG EXPRESSWAY NEAR EXIT 20A FOR SHAWAN
ROAD.
1153 AM NON-TSTM WND DMG 2 SSE ARNOLD 39.01N 76.49W
04/30/2021 ANNE ARUNDEL MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON WESTBOUND/SOUTHBOUND US-50/US-301
JOHN HANSON HIGHWAY NEAR EXIT 27A FOR MD-2/MD-450
GOVERNOR RITCHIE HIGHWAY.
1206 PM NON-TSTM WND DMG 2 WNW HAGERSTOWN 39.65N 77.75W
04/30/2021 WASHINGTON MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON NORTHBOUND I-81 NEAR MILE MARKER 6.
1207 PM NON-TSTM WND DMG WASHINGTON 38.91N 77.02W
04/30/2021 DISTRICT OF COLUMB DC BROADCAST MEDIA
WIRES BLEW DOWN ON VA-685 SWINKS MILL ROAD AT VA-694
LEWINSVILLE ROAD.
1208 PM NON-TSTM WND DMG 4 ENE PARK MILLS 39.31N 77.33W
04/30/2021 FREDERICK MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON MD-355 URBANA PIKE NEAR DOCTOR
PERRY ROAD/BIG WOODS ROAD.
1225 PM NON-TSTM WND GST 1 WNW CUMBERLAND 39.66N 78.78W
04/30/2021 M58 MPH ALLEGANY MD MESONET
1232 PM NON-TSTM WND DMG 2 W LINWOOD 39.57N 77.18W
04/30/2021 CARROLL MD FIRE DEPT/RESCUE
A TREE BLEW DOWN IN THE 100 BLOCK OF WEST LOCUST
STREET.
1256 PM NON-TSTM WND DMG 1 S AMERICAN UNIVERSITY 38.93N 77.09W
04/30/2021 DISTRICT OF COLUMB DC BROADCAST MEDIA
A TREE BLEW DOWN ON GARFIELD STREET NORTHWEST EAST OF
FOXHALL ROAD NORTHWEST.
1257 PM NON-TSTM WND DMG 2 N UNIONTOWN 39.63N 77.11W
04/30/2021 CARROLL MD FIRE DEPT/RESCUE
A TREE BLEW DOWN ONTO WIRES WHICH SNAPPED A POLE IN THE
1900 BLOCK OF MAYBERRY ROAD.
1258 PM NON-TSTM WND DMG 2 ESE REESE 39.54N 76.91W
04/30/2021 CARROLL MD FIRE DEPT/RESCUE
A TREE BLEW DOWN ONTO WIRES NEAR THE INTERSECTION OF
SANDYMOUNT ROAD AND MACLEE ROAD.
0110 PM NON-TSTM WND DMG 2 SSW LOCH LYNN HEIGHTS 39.36N 79.39W
04/30/2021 GARRETT MD 911 CALL CENTER
TREE BLEW DOWN ON WIRES ON PLEASANT VALLEY ROAD.
0115 PM NON-TSTM WND DMG GAITHERSBURG 39.14N 77.22W
04/30/2021 MONTGOMERY MD 911 CALL CENTER
A TREE BLEW DOWN ON LITTLE FALLS PARKWAY AT HILLENDALE
ROAD CLOSING THE ROAD.
0118 PM NON-TSTM WND DMG 1 SE MCDONOGH 39.38N 76.74W
04/30/2021 BALTIMORE MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON I-695 BALTIMORE BELTWAY OUTER LOOP
NEAR EXIT 19 FOR I-795 NORTHWEST EXPRESSWAY.
0118 PM NON-TSTM WND DMG 1 N UNIONTOWN 39.61N 77.11W
04/30/2021 CARROLL MD FIRE DEPT/RESCUE
WIRES DOWN CAUSING A FIRE IN THE 1100 BLOCK OF MD-84
BAUST CHURCH ROAD.
0122 PM NON-TSTM WND DMG 2 NNW ARBUTUS 39.26N 76.71W
04/30/2021 BALTIMORE MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON I-695 BALTIMORE BALTWAY OUTER LOOP
NEAR EXIT 12B FOR MD-372 WILKENS AVENUE.
0122 PM NON-TSTM WND DMG 1 SSW UNIONTOWN 39.58N 77.13W
04/30/2021 CARROLL MD FIRE DEPT/RESCUE
WIRES BLEW DOWN ON MD-84 WHERE IT TURNS FROM CLEAR
RIDGE ROAD TO SOUTH CLEAR RIDGE ROAD.
0125 PM NON-TSTM WND DMG 4 W COCKEYSVILLE 39.48N 76.71W
04/30/2021 BALTIMORE MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON MD-25 FALLS ROAD NEAR RIDGE ROAD.
0132 PM NON-TSTM WND DMG 1 SSW NEW CARROLLTON 38.95N 76.89W
04/30/2021 PRINCE GEORGES MD DEPT OF HIGHWAYS
A TREE BLEW DOWN NEAR THE INTERSECTION OF MD-410
VETERANS PARKWAY AND MD-450 ANNAPOLIS ROAD.
0148 PM NON-TSTM WND DMG 1 WNW MIDDLEBURG 39.60N 77.24W
04/30/2021 CARROLL MD FIRE DEPT/RESCUE
WIRES BLEW DOWN CAUSING A FIRE NEAR THE INTERSECTION OF
MD-77 MIDDLEBURG ROAD AND MD-194 FRANCIS SCOTT KEY
HIGHWAY.
0148 PM NON-TSTM WND DMG BERKELEY SPGS 39.63N 78.23W
04/30/2021 MORGAN WV 911 CALL CENTER
TREE BLEW DOWN ON ROAD IN THE 3300 BLOCK OF CHERRY RUN
ROAD.
0151 PM NON-TSTM WND DMG 2 ESE LINWOOD 39.55N 77.11W
04/30/2021 CARROLL MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON MD-75 GREEN VALLEY ROAD BETWEEN
MD-84 SOUTH CLEAR RIDGE ROAD AND MD-800 WATSON LANE.
0152 PM NON-TSTM WND DMG 1 NNE GLENARDEN 38.95N 76.85W
04/30/2021 PRINCE GEORGES MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON US-50 JOHN HANSON HIGHWAY NEAR EXIT
7A FOR I-95/I-495 CAPITAL BELTWAY OUTER LOOP.
0200 PM NON-TSTM WND DMG 2 NNE FAIRPLAY 39.57N 77.73W
04/30/2021 WASHINGTON MD DEPT OF HIGHWAYS
A TREE BLEW DOWN ON MD-65 SHARPSBURG PIKE NEAR ROXBURY
ROAD.
0202 PM NON-TSTM WND DMG 1 ESE FAIRPLAY 39.53N 77.74W
04/30/2021 WASHINGTON MD DEPT OF HIGHWAYS
TREE BLEW DOWN ON MD-68 NEAR INTERSECTION OF MD-65
0203 PM NON-TSTM WND DMG 2 W ANNANDALE 38.83N 77.25W
04/30/2021 FAIRFAX VA DEPT OF HIGHWAYS
A TREE BLEW DOWN ON STARK PLACE.
0215 PM NON-TSTM WND DMG SENECA ROCKS 38.83N 79.38W
04/30/2021 PENDLETON WV 911 CALL CENTER
WIRES AND POWER POLES BLEW DOWN INTO A CREEK NEAR
SENECA ROCKS.
0232 PM NON-TSTM WND DMG 1 WNW MIDDLEBURG 39.60N 77.24W
04/30/2021 CARROLL MD DEPT OF HIGHWAYS
WIRES DOWN AT INTERSECTION OF MD-77 AND MD-194.
0232 PM NON-TSTM WND DMG 1 ENE RICHARDSMERE 39.69N 76.10W
04/30/2021 CECIL MD DEPT OF HIGHWAYS
POLE AND WIRES BLEW DOWN ON MD-1 NEAR HORSESHOE DRIVE.
0234 PM NON-TSTM WND GST 1 NW WELTON 39.01N 79.10W
04/30/2021 M59 MPH GRANT WV MESONET
0255 PM NON-TSTM WND DMG 1 S WAPOCOMO 39.38N 78.74W
04/30/2021 HAMPSHIRE WV 911 CALL CENTER
TREE AND WIRES BLEW DOWN ON CUMBERLAND ROAD NEAR VANCE.
0310 PM NON-TSTM WND GST 1 ENE FOREST PARK 39.71N 78.28W
04/30/2021 M66 MPH WASHINGTON MD MESONET
MD-DOT SENSOR I-68 AT SIDELING HILL.
0313 PM NON-TSTM WND DMG 1 W ROSEMONT 39.33N 77.64W
04/30/2021 FREDERICK MD DEPT OF HIGHWAYS
TREE BLEW DOWN ON MD-17 AT DUTCHMANS CREEK DRIVE.
0320 PM NON-TSTM WND GST 3 SSW SABILLASVILLE 39.65N 77.47W
04/30/2021 M59 MPH FREDERICK MD AWOS
0325 PM NON-TSTM WND GST HAGERSTOWN 39.64N 77.70W
04/30/2021 M58 MPH WASHINGTON MD MESONET
0330 PM NON-TSTM WND DMG 2 SSE GAITHERSBURG 39.11N 77.20W
04/30/2021 MONTGOMERY MD 911 CALL CENTER
ROOF OF SILO PARTIALLY BLOWN OFF NEAR STEINBECK AVENUE.
0330 PM NON-TSTM WND DMG KEYSER 39.44N 78.98W
04/30/2021 MINERAL WV 911 CALL CENTER
NUMEROUS TREES DOWN THROUGHOUT MINERAL COUNTY.
0339 PM NON-TSTM WND DMG 2 ESE PETERSVILLE 39.33N 77.57W
04/30/2021 FREDERICK MD DEPT OF HIGHWAYS
TREE BLEW DOWN ON MD-464 AT HORINE ROAD.
0342 PM NON-TSTM WND DMG 1 SSE HANCOCK 39.68N 78.17W
04/30/2021 MORGAN WV 911 CALL CENTER
TREE BLEW DOWN ON ROAD IN THE 4500 BLOCK OF FAIRVIEW
DRIVE.
0345 PM NON-TSTM WND DMG 3 N THURMONT 39.67N 77.40W
04/30/2021 FREDERICK MD NWS EMPLOYEE
TREE BLEW DOWN ON FENCE.
0345 PM NON-TSTM WND DMG ROMNEY 39.35N 78.76W
04/30/2021 HAMPSHIRE WV 911 CALL CENTER
TREE BLEW DOWN ON CARPERS PIKE BLOCKING THE SOUTHBOUND
LANES.
0353 PM NON-TSTM WND GST MARTINSBURG ARPT 39.40N 77.98W
04/30/2021 M59 MPH BERKELEY WV ASOS
0354 PM NON-TSTM WND GST MARTINSBURG ARPT 39.40N 77.98W
04/30/2021 M61 MPH BERKELEY WV ASOS
0356 PM NON-TSTM WND DMG 1 SSE FORESTVILLE 38.84N 76.87W
04/30/2021 PRINCE GEORGES MD DEPT OF HIGHWAYS
TREE BLEW DOWN ON DC-295 SOUTHBOUND BEFORE PENNSYLVANIA
AVE SE, RIGHT SIDE BLOCKED.
0356 PM NON-TSTM WND DMG BERKELEY SPGS 39.63N 78.23W
04/30/2021 MORGAN WV 911 CALL CENTER
TREE BLEW DOWN ON ROAD ON POTOMAC ROAD NEAR MOOSE
VALLEY TRAIL.
0409 PM NON-TSTM WND GST HARPERS FERRY 39.34N 77.79W
04/30/2021 M59 MPH JEFFERSON WV MESONET
0409 PM NON-TSTM WND GST 2 NNE HALLTOWN 39.34N 77.79W
04/30/2021 M59 MPH JEFFERSON WV MESONET
0424 PM NON-TSTM WND DMG 1 E MIDDLEBURG 38.97N 77.72W
04/30/2021 LOUDOUN VA EMERGENCY MNGR
ALL LANES OF RT 50 CLOSED NEAR SAM FRED RD DUE TO A
TREE DOWN IN MIDDLEBURG.
0430 PM NON-TSTM WND GST GAITHERSBURG 39.14N 77.22W
04/30/2021 M59 MPH MONTGOMERY MD MESONET
0430 PM NON-TSTM WND GST 3 SSW DUNDALK 39.22N 76.53W
04/30/2021 M59 MPH ANZ538 MD NDBC
0432 PM NON-TSTM WND DMG 1 NNE COMPTON 38.80N 78.36W
04/30/2021 PAGE VA TRAINED SPOTTER
TREE BLEW DOWN ON US-340 BLOCKING ALL LANES.
0435 PM NON-TSTM WND GST LEESBURG EXEC ARPT 39.08N 77.56W
04/30/2021 M60 MPH LOUDOUN VA AWOS
0436 PM NON-TSTM WND DMG PURCELLVILLE 39.14N 77.71W
04/30/2021 LOUDOUN VA NWS EMPLOYEE
LARGE TREE LIMB DOWN ON N HATCHER RD BETWEEN E SKYLINE
DR AND LOUDOUN VALLEY DR.
0436 PM NON-TSTM WND DMG PURCELLVILLE 39.14N 77.71W
04/30/2021 LOUDOUN VA NWS EMPLOYEE
WIRES DOWN ON MAIN ST BETWEEN N HATCHER RD AND 21ST ST.
MAIN ST CLOSED.
0436 PM NON-TSTM WND DMG PURCELLVILLE 39.14N 77.71W
04/30/2021 LOUDOUN VA EMERGENCY MNGR
POWER UTILITY POLE AND WIRES DOWN ON MAIN ST.
0439 PM NON-TSTM WND GST DULLES INTL AIRPORT 38.94N 77.45W
04/30/2021 M60 MPH LOUDOUN VA ASOS
0446 PM NON-TSTM WND GST 1 NW GAITHERSBURG 39.15N 77.24W
04/30/2021 M58 MPH MONTGOMERY MD MESONET
0448 PM NON-TSTM WND DMG 2 NNW OAKTON 38.91N 77.32W
04/30/2021 FAIRFAX VA TRAINED SPOTTER
TREES DOWN NEAR DIFFICULT RUN RIVER. WINDS ESTIMATED
NEAR 60 MPH.
0450 PM NON-TSTM WND DMG 2 SSE FREDERICK 39.40N 77.41W
04/30/2021 FREDERICK MD 911 CALL CENTER
WIRES DOWN ON FRANCIS SCOTT KEY DRIVE NEAR THE
ECONOLODGE.
0453 PM NON-TSTM WND DMG WASHINGTON 38.91N 77.02W
04/30/2021 DISTRICT OF COLUMB DC 911 CALL CENTER
TREE BLEW DOWN ONTO HOUSE ON WALTER STREET.
0453 PM NON-TSTM WND GST REAGAN NATIONAL ARPT 38.85N 77.03W
04/30/2021 M62 MPH ARLINGTON VA ASOS
0455 PM NON-TSTM WND DMG 1 NNE POTOMAC 39.04N 77.19W
04/30/2021 MONTGOMERY MD DEPT OF HIGHWAYS
SEVERAL TREES DOWN ON FALLS RD BETWEEN WOODINGTON DR
AND RIVER RD. ROAD CLOSED.
0459 PM NON-TSTM WND DMG 1 N ANNANDALE 38.85N 77.21W
04/30/2021 FAIRFAX VA TRAINED SPOTTER
TWO TREES BLEW ONTO TELEPHONE WIRES BRINGING DOWN A
TELEPHONE POLE ON EXECUTIVE AVENUE.
0459 PM NON-TSTM WND GST 1 W GLEN BURNIE 39.16N 76.62W
04/30/2021 M58 MPH ANNE ARUNDEL MD MESONET
0500 PM NON-TSTM WND GST 1 S US CAPITOL 38.87N 77.01W
04/30/2021 M58 MPH DISTRICT OF COLUMB DC MESONET
0500 PM NON-TSTM WND GST 3 SSW DUNDALK 39.22N 76.53W
04/30/2021 M66 MPH ANZ538 MD NDBC
0500 PM NON-TSTM WND GST DAVISON ARMY AIRFLD 38.72N 77.17W
04/30/2021 M58 MPH FAIRFAX VA AWOS
0502 PM NON-TSTM WND GST BWI MARSHALL AIRPORT 39.17N 76.68W
04/30/2021 M58 MPH ANNE ARUNDEL MD ASOS
0503 PM NON-TSTM WND DMG GAITHERSBURG 39.14N 77.22W
04/30/2021 MONTGOMERY MD 911 CALL CENTER
METAL ROOF BLOWN OFF TOWNHOUSE ON GOLDEN ASH WAY.
0507 PM NON-TSTM WND DMG 2 N LAYTONSVILLE 39.24N 77.14W
04/30/2021 MONTGOMERY MD EMERGENCY MNGR
TREE BLEW DOWN ON MD-108 BETWEEN HAWKINS CREAMERY ROAD
AND ROCKY ROAD. ALL SOUTHBOUND LANES BLOCKED.
0508 PM NON-TSTM WND DMG 1 NNE POTOMAC 39.04N 77.19W
04/30/2021 MONTGOMERY MD EMERGENCY MNGR
MULTIPLE TREES BLEW DOWN ON MD-189 BETWEEN WOODINGTON
ROAD AND RIVER ROAD CLOSING THE ROAD.
0512 PM NON-TSTM WND GST 2 ESE EASTPORT 38.96N 76.45W
04/30/2021 M60 MPH ANZ532 MD BUOY
0512 PM NON-TSTM WND GST 1 NNE BAY RIDGE 38.96N 76.45W
04/30/2021 M60 MPH ANZ532 MD NDBC
0514 PM NON-TSTM WND DMG GAITHERSBURG 39.14N 77.22W
04/30/2021 MONTGOMERY MD 911 CALL CENTER
TREE BLEW DOWN ONTO A HOUSE ON PYLE ROAD.
0515 PM NON-TSTM WND DMG 2 NE STOTLERS CROSSROAD 39.53N 78.20W
04/30/2021 MORGAN WV 911 CALL CENTER
TREE BLEW DOWN ON HIGHLAND RIDGE ROAD.
0519 PM NON-TSTM WND DMG BALTIMORE 39.30N 76.61W
04/30/2021 BALTIMORE CITY MD 911 CALL CENTER
TREE BLEW DOWN ON ANGELESEA STREET CLOSING THE ROAD.
0531 PM NON-TSTM WND DMG 1 ENE BOLLING AIR FORCE 38.84N 77.00W
04/30/2021 DISTRICT OF COLUMB DC 911 CALL CENTER
PARTIAL BUILDING COLLAPSE OF BUILDING UNDER RENOVATION
COLLAPSED ONTO SIDEWALK ON MALCOLM X AVE SE.
0533 PM NON-TSTM WND DMG ARLINGTON 38.87N 77.10W
04/30/2021 ARLINGTON VA 911 CALL CENTER
TREE BLEW DOWN ONTO GLEBE ROAD BETWEEN ROUTE 50 AND
PERSHING DRIVE BLOCKING THE NORTHBOUND LANES.
0533 PM NON-TSTM WND DMG ARLINGTON 38.87N 77.10W
04/30/2021 ARLINGTON VA 911 CALL CENTER
TREE DOWN ON THE ROOF OF APARTMENT BUILDING ON GLEBE
ROAD.
0538 PM NON-TSTM WND DMG 1 NE AMERICAN UNIVERSIT 38.95N 77.07W
04/30/2021 DISTRICT OF COLUMB DC 911 CALL CENTER
TREE BLEW DOWN ONTO A HOUSE IN THE 3000 BLOCK OF
BRANDYWINE STREET.
0541 PM NON-TSTM WND DMG 1 ENE NATIONAL ZOO 38.94N 77.03W
04/30/2021 DISTRICT OF COLUMB DC 911 CALL CENTER
TREE DOWN ON TWO CARS ON RANDOLPH STREET BETWEEN 13TH
STREET AND 14TH STREET.
0542 PM NON-TSTM WND DMG 1 NW NATIONAL ZOO 38.94N 77.06W
04/30/2021 DISTRICT OF COLUMB DC TRAINED SPOTTER
TREE BLEW DOWN IN THE 4000 BLOCK OF CONNECTICUT AVE.
0545 PM NON-TSTM WND DMG 3 WNW RAVENSWORTH 38.82N 77.26W
04/30/2021 FAIRFAX VA NWS EMPLOYEE
TREE BLEW DOWN ON A CAR AND TWO OTHER CARS WERE
DAMAGED.
0545 PM NON-TSTM WND DMG 2 ENE FAIRFAX 38.86N 77.27W
04/30/2021 FAIRFAX VA NWS EMPLOYEE
TREE BLEW DOWN ON THE 3900 BLOCK OF PICKETT ROAD.
0601 PM NON-TSTM WND DMG 1 NNE AMERICAN UNIVERSI 38.95N 77.08W
04/30/2021 DISTRICT OF COLUMB DC 911 CALL CENTER
TREE BLEW DOWN ONTO YUMA ST NW IN TENLEYTOWN.
0619 PM NON-TSTM WND DMG FAIRFAX 38.85N 77.37W
04/30/2021 FAIRFAX VA 911 CALL CENTER
NUMEROUS REPORTS OF TREES AND WIRES DOWN IN ANNANDALE.
0622 PM NON-TSTM WND DMG 1 W SOMERSET 38.97N 77.11W
04/30/2021 MONTGOMERY MD EMERGENCY MNGR
TREE BLEW ONTO A HOUSE CAUSING ROOF DAMAGE NEAR THE
INTERSECTION OF NEWINGTON ROAD AND MARENGO ROAD.
0625 PM NON-TSTM WND DMG 1 SSW NATIONAL ARBORETU 38.89N 76.97W
04/30/2021 DISTRICT OF COLUMB DC 911 CALL CENTER
TREE BLEW ONTO BIKE RACK AND BUS STOP STRUCTURE.
0633 PM NON-TSTM WND DMG 2 SSE LONDONTOWNE 38.91N 76.55W
04/30/2021 ANNE ARUNDEL MD 911 CALL CENTER
POLE AND WIRES BLEW DOWN AT INTERSECTION OF ROUTE 14
AND ROUTE 468.
0700 PM NON-TSTM WND GST 8 NW TAYLORS ISLAND 38.56N 76.42W
04/30/2021 M65 MPH ANZ533 MD NDBC
0705 PM NON-TSTM WND GST POTOMAC LT 33 38.34N 76.99W
04/30/2021 M58 MPH ANZ536 MD WXFLOW
0710 PM NON-TSTM WND DMG 1 N GLEN ECHO 38.98N 77.14W
04/30/2021 MONTGOMERY MD EMERGENCY MNGR
TREE AND WIRES BLEW DOWN ON SELKIRK DRIVE.
0716 PM NON-TSTM WND DMG 1 NNE HUGHESVILLE 39.11N 77.66W
04/30/2021 LOUDOUN VA DEPT OF HIGHWAYS
TREE AND WIRES BLEW DOWN ON HARMONY CHURCH ROAD BETWEEN
MOUNT GILEAD ROAD AND DUNLOP MILL ROAD.
0722 PM NON-TSTM WND GST PATUXENT RIVER NAS 38.27N 76.40W
04/30/2021 M58 MPH ST. MARYS MD AWOS
0729 PM NON-TSTM WND GST PATUXENT RIVER NAS 38.27N 76.40W
04/30/2021 M58 MPH ST. MARYS MD AWOS
0731 PM NON-TSTM WND DMG 2 WNW MAYO 38.91N 76.54W
04/30/2021 ANNE ARUNDEL MD 911 CALL CENTER
TREE AND WIRES DOWN ON CAMP LETTS ROAD CAUSING THE ROAD
TO BE CLOSED IN BOTH DIRECTIONS.
0731 PM NON-TSTM WND DMG 1 WNW GALESVILLE 38.85N 76.56W
04/30/2021 ANNE ARUNDEL MD 911 CALL CENTER
TREE BLEW DOWN AT INTERSECTION OF MD-468 AND GALESVILLE
ROAD CAUSING THE ROAD TO CLOSE.
0817 PM NON-TSTM WND DMG 2 SSE HUGHESVILLE 38.51N 76.77W
04/30/2021 ST. MARYS MD TRAINED SPOTTER
TREE BLEW DOWN NEAR INTERSECTION OF MOHAWK DRIVE AND
LAKOTA LANE.
0823 PM NON-TSTM WND DMG 1 N MERRIFIELD 38.89N 77.24W
04/30/2021 FAIRFAX VA TRAINED SPOTTER
TREE BLEW DOWN ACROSS ROAD ON PARK STREET.
0846 PM NON-TSTM WND DMG CUMBERLAND 39.65N 78.76W
04/30/2021 ALLEGANY MD 911 CALL CENTER
DOZENS OF TREES DOWN THROUGHOUT ALLEGHENY COUNTY.
0900 PM NON-TSTM WND DMG VIENNA 38.91N 77.27W
04/30/2021 FAIRFAX VA TRAINED SPOTTER
TREE AND WIRES BLEW DOWN ON ROAD NEAR INTERSECTION OF
MCKINLEY STREET AND JOHN MARSHALL DRIVE.
&&
EVENT NUMBER LWX2103843 LWX2103842 LWX2103841 LWX2103852 LWX2103844
LWX2103845 LWX2103848 LWX2103849 LWX2103850 LWX2103947 LWX2103846
LWX2103860 LWX2103847 LWX2103851 LWX2103861 LWX2103877 LWX2103853
LWX2103854 LWX2103855 LWX2103857 LWX2103856 LWX2103858 LWX2103859
LWX2103862 LWX2103863 LWX2103864 LWX2103939 LWX2103878 LWX2103865
LWX2103873 LWX2103866 LWX2103874 LWX2103867 LWX2103868 LWX2103875
LWX2103955 LWX2103869 LWX2103870 LWX2103871 LWX2103879 LWX2103872
LWX2103945 LWX2103884 LWX2103885 LWX2103876 LWX2103948 LWX2103880
LWX2103881 LWX2103887 LWX2103883 LWX2103929 LWX2103944 LWX2103882
LWX2103954 LWX2103889 LWX2103949 LWX2103886 LWX2103917 LWX2103890
LWX2103956 LWX2103888 LWX2103896 LWX2103904 LWX2103895 LWX2103902
LWX2103892 LWX2103891 LWX2103919 LWX2103920 LWX2103926 LWX2103894
LWX2103897 LWX2103924 LWX2103931 LWX2103893 LWX2103905 LWX2103914
LWX2103898 LWX2103900 LWX2103901 LWX2103915 LWX2103952 LWX2103923
LWX2103899 LWX2103906 LWX2103907 LWX2103909 LWX2103916 LWX2103903
LWX2103953 LWX2103908 LWX2103913 LWX2103911 LWX2103912 LWX2103922
LWX2103910 LWX2103921 LWX2103940 LWX2103941 LWX2103918 LWX2103925
LWX2103927 LWX2103928 LWX2103934 LWX2103937 LWX2103938 LWX2103930
LWX2103936 LWX2103935 LWX2103950 LWX2103932 LWX2103933 LWX2103943
LWX2103942 LWX2103946 LWX2103951
CPBThe national radar mosaic for the moment the first event began.
1 frost/freeze. Local standard time, as filed.
Canadian high pressure allowed temperature to drop to near or just below freezing across western Virginia.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2021Every state in 2021This day in weather historyWarnings in Virginia, May 2021
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: 963061.