Weather Alerts-

Severe Thunderstorm Warning

From Mon 9:12 pm until 9:45 pm EDT

1 of 5

Action Recommended

Take shelter in place or per instructions

Issued By

Baltimore/Washington - MD, US, National Weather Service

Affected Area

Harford County

Description

The National Weather Service in Sterling Virginia has issued a Severe Thunderstorm Warning for... The southeastern District of Columbia... Baltimore City in northern Maryland... Anne Arundel County in central Maryland... Southeastern Howard County in central Maryland... Northwestern Calvert County in southern Maryland... Southern Harford County in northern Maryland... Southeastern Baltimore County in northern Maryland... Prince Georges County in central Maryland... North central Charles County in southern Maryland... Until 945 PM EDT. At 912 PM EDT, severe thunderstorms were located along a line extending from Milford Mill to near Fort Belvoir, moving northeast at 60 mph. HAZARD...60 mph wind gusts. SOURCE...Emergency management. 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... Baltimore, Columbia, Waldorf, Bowie, Severn, Annapolis, Clinton, Pikesville, College Park, Crofton, Middle River, Fort Washington, Greenbelt, Elkridge, Riviera Beach, Forestville, Largo, Coral Hills, Bladensburg, and Mayo. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Damaging winds and continuous cloud to ground lightning are occurring with these storms. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...<.75 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH

Special Marine Warning

From Mon 8:42 pm until 10:45 pm EDT

2 of 5

Action Recommended

Avoid the subject event as per the instructions

Issued By

Baltimore/Washington - MD, US, National Weather Service

Affected Area

Chesapeake Bay north of Pooles Island MD

Description

The National Weather Service in Sterling Virginia has issued a Special Marine Warning for... Chesapeake Bay from Pooles Island to Sandy Point MD... Chesapeake Bay from Sandy Point to North Beach MD... Chesapeake Bay north of Pooles Island MD... Chester River to Queenstown MD... Eastern Bay... Patapsco River including Baltimore Harbor... Until 1045 PM EDT. At 842 PM EDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 30 nm northwest of Middle River to 11 nm northwest of Mason Neck State Park, moving east at 25 knots. HAZARD...Wind gusts in excess of 48 knots and waterspouts. SOURCE...Radar indicated. IMPACT...Boaters could easily be thrown overboard by suddenly higher wind and waves capsizing their vessel. Boats could suffer significant damage in high winds. Waterspouts can easily overturn boats and create locally hazardous seas. Locations impacted include... Kent Narrows Bridge, North Point State Park, Magothy River, Eastern Bay, Dobbins Island, Pooles Island, Gunpowder River, Sandy Point State Park, Northeast River, Bloody Point Light, Thomas Point Light, Poplar Island, Parsons Island, Fort Smallwood State Park, Pinehurst, Turkey Point, Aberdeen Proving Ground, Hart Miller Island, Gibson Island, and Bodkin Point. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. WATERSPOUT...POSSIBLE; HAIL...0.00IN; WIND...48KTS

Gale Warning

Until Tue 1:00 am EDT

3 of 5

Action Recommended

Avoid the subject event as per the instructions

Issued By

Baltimore/Washington - MD, US, National Weather Service

Affected Area

Tidal Potomac River from Key Bridge to Smith Point VA, and Chesapeake Bay and adjoining estuaries north of Smith Point VA

Description

...GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EDT TUESDAY... WHAT...South winds 15 to 30 kt with gusts up to 40 kt and waves 3 to 6 ft. WHERE...Tidal Potomac River from Key Bridge to Smith Point VA, and Chesapeake Bay and adjoining estuaries north of Smith Point VA. WHEN...Until 1 AM EDT Tuesday. IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions.

Wind Advisory

From Mon 8:00 pm until Tue 12:00 am EDT

4 of 5

Action Recommended

Execute a pre-planned activity identified in the instructions

Issued By

Baltimore/Washington - MD, US, National Weather Service

Affected Area

Cecil, Northern Baltimore, Northwest Harford, Southeast Harford, and Southern Baltimore Counties

Description

...WIND ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO MIDNIGHT EDT TONIGHT... WHAT...West winds 20 to 30 mph with gusts up to 55 mph expected. WHERE...Cecil, Northern Baltimore, Northwest Harford, Southeast Harford, and Southern Baltimore Counties. WHEN...From 8 PM this evening to midnight EDT tonight. A sudden onset of strong winds are expected behind the cold front this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Be prepared for a sudden onset of strong winds this evening.

Coastal Flood Advisory

From Mon 6:00 pm until Tue 12:00 am EDT

5 of 5

Action Recommended

Attend to information sources as described in the instructions

Issued By

Baltimore/Washington - MD, US, National Weather Service

Affected Area

Shoreline in Southeast Harford County

Description

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... WHAT...Up to two and half feet of inundation above ground level expected in low lying areas due to tidal flooding. WHERE...Shoreline in Southeast Harford County. WHEN...Until midnight EDT tonight, especially around the time of high tide. IMPACTS...At 4.5 feet, portions of the Havre de Grace Yacht Basin are flooded, along with Hutchins Park. ADDITIONAL DETAILS...Tides two and a half to three feet above normal. The next high tide at Havre de Grace is at 9:00 PM and 9:45 AM. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Time of high total tides are approximate to the nearest hour. Chesapeake Bay at Havre de Grace MD MLLW Categories - Minor 4.0 ft, Moderate 5.5 ft, Major 7.0 ft MHHW Categories - Minor 2.2 ft, Moderate 3.7 ft, Major 5.2 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 16/09 PM 4.8 2.4 2.6 3.0 Minor 17/09 AM 3.6 1.2 1.8 1.0 None 17/09 PM 2.5 0.1 0.4 1.0 None 18/10 AM 2.1 -0.3 0.0 0.5 None 18/11 PM 2.1 -0.3 0.0 0.5 None 19/11 AM 2.5 0.1 0.2 0.5 None &&

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