Update: Flash Flood Warning issued September 3 at 6:44PM EDT until September 3 at 8:30PM EDT by NWS Baltimore MD/Washington DC

Event: Flash Flood Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T18:44:00-04:00
Expires: 2020-09-03T20:30:00-04:00
Description: At 644 PM EDT, reports from emergency management and stream gauges
indicated flash flooding was ongoing over lower Montgomery County.
As this water runs off downstream, flash flooding is expected over
Northwest DC and northwestern Prince Georges County inside the
Beltway.

HAZARD…Life threatening flash flooding.

SOURCE…Emergency management and stream gauges.

IMPACT…Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.

Some locations that may experience flash flooding include…
Arlington… Rockville…
Bethesda… College Park…
Greenbelt… Langley Park…
Beltsville… Fort Totten…
Howard University… University of Maryland…
Gallaudet University… Aspen Hill…
Potomac… North Bethesda…
Hyattsville… White Oak…
Takoma Park… East Riverdale…
Adelphi… Colesville…
Kemp Mill… Chevy Chase…
North Kensington… South Kensington…
Riverdale Park… Forest Glen…
Instruction: Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Severe
Certainty: Likely
Categories: Met,
Area Description: Arlington, VA; Prince Georges, MD; Montgomery, MD; District of Columbia, DC

Message Identifier: NWS-IDP-PROD-4429214-3688360
CAP MessageType: Update

Filed under FFS

Update: Flash Flood Warning issued September 3 at 6:44PM EDT until September 3 at 8:30PM EDT by NWS Baltimore MD/Washington DC

Event: Flash Flood Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T18:44:00-04:00
Expires: 2020-09-03T20:30:00-04:00
Description: At 644 PM EDT, reports from emergency management and stream gauges
indicated flash flooding was ongoing over lower Montgomery County.
As this water runs off downstream, flash flooding is expected over
Northwest DC and northwestern Prince Georges County inside the
Beltway.

HAZARD…Life threatening flash flooding.

SOURCE…Emergency management and stream gauges.

IMPACT…Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.

Some locations that may experience flash flooding include…
Arlington… Rockville…
Bethesda… College Park…
Greenbelt… Langley Park…
Beltsville… Fort Totten…
Howard University… University of Maryland…
Gallaudet University… Aspen Hill…
Potomac… North Bethesda…
Hyattsville… White Oak…
Takoma Park… East Riverdale…
Adelphi… Colesville…
Kemp Mill… Chevy Chase…
North Kensington… South Kensington…
Riverdale Park… Forest Glen…
Instruction: Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Severe
Certainty: Likely
Categories: Met,
Area Description: Arlington, VA; Prince Georges, MD; Montgomery, MD; District of Columbia, DC

Message Identifier: NWS-IDP-PROD-4429214-3688360
CAP MessageType: Update
Added note: – Flash Flood Warnings warnings

Filed under FFS

Alert: Severe Thunderstorm Warning issued September 3 at 6:25PM EDT until September 3 at 7:15PM EDT by NWS Baltimore MD/Washington DC

Event: Severe Thunderstorm Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T18:25:00-04:00
Expires: 2020-09-03T19:15:00-04:00
Description: The National Weather Service in Sterling Virginia has issued a

* Severe Thunderstorm Warning for…
Southern Fairfax County in northern Virginia…
The City of Manassas Park in northern Virginia…
Central Prince William County in northern Virginia…
The City of Manassas in northern Virginia…

* Until 715 PM EDT.

* At 624 PM EDT, a severe thunderstorm was located near Linton Hall,
or 10 miles southwest of Centreville, moving east at 50 mph.

HAZARD…60 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Damaging winds will cause some trees and large branches
to fall. This could injure those outdoors, as well as
damage homes and vehicles. Roadways may become blocked by
downed trees. Localized power outages are possible.
Unsecured light objects may become projectiles.

* Locations impacted include…
Dale City, Springfield, Fort Hunt, Groveton, Huntington, Fort Belvoir,
Woodbridge, Lake Ridge, Burke, Linton Hall, Lincolnia, Montclair,
Lorton, Franconia, Hybla Valley, Bull Run, Newington, and Manassas.
Instruction: A Tornado Watch remains in effect until 1000 PM EDT for District of
Columbia…southern and central Maryland…and northern Virginia.

For your protection move to an interior room on the lowest floor of a
building.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Severe
Certainty: Observed
Categories: Met,
Area Description: City of Manassas, VA; City of Manassas Park, VA; Fairfax, VA; Prince William, VA

Message Identifier: NWS-IDP-PROD-4429199-3688347
CAP MessageType: Alert

Filed under SVR

Update: Severe Thunderstorm Warning issued September 3 at 5:24PM EDT until September 3 at 6:15PM EDT by NWS Baltimore MD/Washington DC

Event: Severe Thunderstorm Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T17:24:00-04:00
Expires: 2020-09-03T18:15:00-04:00
Description: At 524 PM EDT, severe thunderstorms were located along a line
extending from Laurel to Greenbelt to Fort Totten, moving east at 30
mph.

These are very dangerous storms.

HAZARD…Widespread damaging wind gusts up to 80 mph.

SOURCE…Radar indicated.

IMPACT…Expect considerable damage to trees and power lines. Your
life is at significant risk if outdoors. In addition to
some trees falling into homes, wind damage is possible to
roofs, sheds, open garages, and mobile homes.

Locations impacted include…
Bowie, Severn, Annapolis, College Park, Crofton, Greenbelt, Langley
Park, Beltsville, Forestville, Largo, Bladensburg, Mayo, Shady Side,
Deale, Naval Academy, Gibson Island, Sillery Bay, Fedex Field,
Magothy River and Pinehurst.
Instruction: A Tornado Watch remains in effect until 1000 PM EDT for District of
Columbia…and central Maryland.

This is an EXTREMELY DANGEROUS SITUATION. These storms will likely
produce widespread wind damage across College Park, Greenbelt and
Beltsville. SEEK SHELTER NOW inside a sturdy structure and stay away
from windows.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Severe
Certainty: Observed
Categories: Met,
Area Description: Prince Georges, MD; Anne Arundel, MD; District of Columbia, DC

Message Identifier: NWS-IDP-PROD-4429118-3688287
CAP MessageType: Update

Filed under SVS

Update: Tornado Warning issued September 3 at 5:18PM EDT until September 3 at 5:45PM EDT by NWS Baltimore MD/Washington DC

Event: Tornado Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T17:18:00-04:00
Expires: 2020-09-03T17:45:00-04:00
Description: At 518 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Beltsville, moving east at 30 mph.

HAZARD…Tornado.

SOURCE…Radar indicated rotation.

IMPACT…For those in the direct path of a tornado touchdown, flying
debris will be dangerous to those caught without shelter.
Damage to roofs, siding, and windows may occur. Mobile
homes may be damaged or destroyed. Tree damage is likely.

This dangerous storm will be near…
New Carrollton around 525 PM EDT.
Lanham-Seabrook and Goddard around 530 PM EDT.
Mitchellville and Woodmore around 535 PM EDT.
Bowie around 540 PM EDT.

Other locations impacted by this tornadic thunderstorm include Berwyn
Heights and Glenn Dale.
Instruction: TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Extreme
Certainty: Observed
Categories: Met,
Area Description: Prince Georges, MD

Message Identifier: NWS-IDP-PROD-4429107-3688278
CAP MessageType: Update
Added note: – Tornado warnngs

Filed under SVS

Update: Tornado Warning issued September 3 at 5:18PM EDT until September 3 at 5:45PM EDT by NWS Baltimore MD/Washington DC

Event: Tornado Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T17:18:00-04:00
Expires: 2020-09-03T17:45:00-04:00
Description: At 518 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Beltsville, moving east at 30 mph.

HAZARD…Tornado.

SOURCE…Radar indicated rotation.

IMPACT…For those in the direct path of a tornado touchdown, flying
debris will be dangerous to those caught without shelter.
Damage to roofs, siding, and windows may occur. Mobile
homes may be damaged or destroyed. Tree damage is likely.

This dangerous storm will be near…
New Carrollton around 525 PM EDT.
Lanham-Seabrook and Goddard around 530 PM EDT.
Mitchellville and Woodmore around 535 PM EDT.
Bowie around 540 PM EDT.

Other locations impacted by this tornadic thunderstorm include Berwyn
Heights and Glenn Dale.
Instruction: TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Extreme
Certainty: Observed
Categories: Met,
Area Description: Prince Georges, MD

Message Identifier: NWS-IDP-PROD-4429107-3688278
CAP MessageType: Update

Filed under SVS

Alert: Severe Thunderstorm Warning issued September 3 at 5:16PM EDT until September 3 at 6:15PM EDT by NWS Baltimore MD/Washington DC

Event: Severe Thunderstorm Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T17:16:00-04:00
Expires: 2020-09-03T18:15:00-04:00
Description: The National Weather Service in Sterling Virginia has issued a

* Severe Thunderstorm Warning for…
The northeastern District of Columbia…
Anne Arundel County in central Maryland…
Northern Prince Georges County in central Maryland…

* Until 615 PM EDT.

* At 516 PM EDT, severe thunderstorms were located along a line
extending from near Laurel to College Park to Friendship Village,
moving east at 30 mph.

HAZARD…70 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Damaging winds will cause some trees and large branches
to fall. This could injure those outdoors, as well as
damage homes and vehicles. Roadways may become blocked by
downed trees. Localized power outages are possible.
Unsecured light objects may become projectiles.

* Locations impacted include…
Bowie, Severn, Annapolis, College Park, Crofton, Greenbelt, Langley
Park, Beltsville, Forestville, Largo, Bladensburg, Mayo, Shady
Side, Deale, Naval Academy, Gibson Island, Sillery Bay, Fedex
Field, Magothy River and Pinehurst.
Instruction: A Tornado Watch remains in effect until 1000 PM EDT for District of
Columbia…and central Maryland.

For your protection move to an interior room on the lowest floor of a
building.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Severe
Certainty: Observed
Categories: Met,
Area Description: Prince Georges, MD; Anne Arundel, MD; District of Columbia, DC

Message Identifier: NWS-IDP-PROD-4429103-3688275
CAP MessageType: Alert

Filed under SVR

Update: Tornado Warning issued September 3 at 5:12PM EDT until September 3 at 5:45PM EDT by NWS Baltimore MD/Washington DC

Event: Tornado Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T17:12:00-04:00
Expires: 2020-09-03T17:45:00-04:00
Description: At 512 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Baltimore, moving east at 25 mph.

HAZARD…Tornado.

SOURCE…Radar indicated rotation.

IMPACT…For those in the direct path of a tornado touchdown, flying
debris will be dangerous to those caught without shelter.
Damage to roofs, siding, and windows may occur. Mobile
homes may be damaged or destroyed. Tree damage is likely.

This dangerous storm will be near…
Parkville around 515 PM EDT.
Carney and Rossville around 525 PM EDT.
Rosedale and White Marsh around 530 PM EDT.
Middle River, Back River, Dundalk and Essex around 535 PM EDT.
Bowleys Quarters around 540 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Nottingham, Eastpoint, Fullerton, Loch Raven Village, Martin State
Airport, Chase, Joppatowne, Edgemere and Edgewood.
Instruction: TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Extreme
Certainty: Observed
Categories: Met,
Area Description: Baltimore City, MD; Harford, MD; Baltimore, MD

Message Identifier: NWS-IDP-PROD-4429097-3688269
CAP MessageType: Update
Added note: – Tornado warnngs

Filed under SVS

Update: Severe Thunderstorm Warning issued September 3 at 5:00PM EDT until September 3 at 5:30PM EDT by NWS Baltimore MD/Washington DC

Event: Severe Thunderstorm Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T17:00:00-04:00
Expires: 2020-09-03T17:30:00-04:00
Description: At 459 PM EDT, a severe thunderstorm with a history of producing
measured wind gusts to near 60 mph was located over Aspen Hill, or
near Rockville, moving east at 30 mph.

HAZARD…70 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.

Locations impacted include…
Columbia, Rockville, Bethesda, Gaithersburg, Reston, Olney, College
Park, Greenbelt, Langley Park, Beltsville, Bladensburg, American
Legion Bridge, Fort Totten, University of Maryland, Howard
University, Aspen Hill, Potomac, North Bethesda, Montgomery Village
and North Potomac.
Instruction: A Tornado Watch remains in effect until 1000 PM EDT for District of
Columbia…central Maryland…and northern Virginia.

For your protection move to an interior room on the lowest floor of a
building.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Severe
Certainty: Observed
Categories: Met,
Area Description: Prince Georges, MD; Montgomery, MD; Howard, MD; Fairfax, VA; District of Columbia, DC

Message Identifier: NWS-IDP-PROD-4429083-3688254
CAP MessageType: Update

Filed under SVS

Update: Tornado Warning issued September 3 at 4:58PM EDT until September 3 at 5:15PM EDT by NWS Baltimore MD/Washington DC

Event: Tornado Warning
Sender Name: NWS Baltimore MD/Washington DC
Issued: 2020-09-03T16:58:00-04:00
Expires: 2020-09-03T17:15:00-04:00
Description: At 458 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Rossmoor, or near Olney, moving east at 40 mph.

HAZARD…Tornado.

SOURCE…Radar indicated rotation.

IMPACT…For those in the direct path of a tornado touchdown, flying
debris will be dangerous to those caught without shelter.
Damage to roofs, siding, and windows may occur. Mobile
homes may be damaged or destroyed. Tree damage is likely.

This dangerous storm will be near…
Fairland around 505 PM EDT.
Beltsville around 510 PM EDT.
Laurel around 515 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Spencerville, Cloverly, Calverton, Scaggsville, Burtonsville,
Norbeck, Ednor, Glenmont, Fulton and Wheaton.
Instruction: TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Link to more Info: http://www.weather.gov
Urgency: Immediate
Severity: Extreme
Certainty: Observed
Categories: Met,
Area Description: Prince Georges, MD; Montgomery, MD; Howard, MD

Message Identifier: NWS-IDP-PROD-4429080-3688251
CAP MessageType: Update

Filed under SVS