Weather Alerts For Havre de Grace, MD

# HEADLINE -------------------- COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON # SUMMARY -------------------- 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 -------- --------- --------- --------- ------- -------- 18/01 PM 4.3 1.9 1.5 3.0 Minor 19/01 AM 3.1 0.7 1.2 1.0 None 19/02 PM 3.2 0.8 0.6 1.0 None 20/03 AM 2.4 -0.0 0.3 1.0 None 20/03 PM 2.8 0.4 0.4 1.0 None 21/04 AM 2.6 0.2 0.3 1.0 None # DETAILS -------------------- WHAT Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. WHERE Shoreline in Southeast Harford County. WHEN Ongoing through 4 PM. IMPACTS At 4.0 feet, water begins to go over the bulkhead at the Havre de Grace Yacht Basin in multiple locations. ADDITIONAL DETAILS Tides one and a half to two feet above normal. The next high tide at Havre de Grace is at 12:51 PM. ISSUED AT Thursday, June 18, 2026 at 12:23 PM EDT ISSUED BY National Weather Service Baltimore MD/Washington DC HEADER Coastal Hazard Message # 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. # AREAS AFFECTED -------------------- Southeast Harford

There is a Marginal Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF NEW ENGLAND...THE MID-ATLANTIC REGION...AND FROM THE GULF COAST STATE INTO THE CAROLINAS SUMMARY Isolated to scattered severe thunderstorms are expected from Kentucky and the central Appalachians to the Mid-Atlantic, with primarily damaging wind gusts or marginal hail. Scattered severe storms are possible from upstate New York into New England, with damaging wind gusts and tornado potential. A few tornadoes may also occur over parts of the middle Gulf Coast states, and scattered storms may produce gusty winds or marginal hail from Oklahoma into western North Texas. NY/New England A fast-moving low-topped squall line is tracking eastward across NY. Low and mid level wind fields in this region are very strong, contributing to occasional bowing structures and QLCS mesocyclones. This activity will spread into VT/NH through the afternoon with a continued risk of damaging winds and isolated tornadoes. Confidence in severe storms farther south into southern New England is lower, but at least isolated strong/damaging wind gusts are possible. KY into Mid Atlantic A remnant outflow boundary from overnight storms extends across KY into southern VA. Strong heating along and south of the boundary will likely result in renewed convection this afternoon, in a zone of moderate westerly flow aloft and CAPE values around 2000 J/kg. A few severe storms are expected in this corridor, with activity moving into northern NC later today. Damaging winds are the main risk. Gulf Coast into Carolinas The remnant circulation of Arthur is becoming more progressive with time, and is accelerating eastward. As this occurs, the zone of relatively strong southerly low-level winds will also shift across AL into GA and eventually SC/NC tonight. Ample low-level moisture and high theta-e values will coincide with the region of strong shear, and CAM solutions suggest clusters of thunderstorms in this area as well. This suggests at least some risk of damaging wind gusts and tornadoes through the afternoon and night as the system moves northeastward. TX/OK Scattered thunderstorms will occasional hail risk will slowly diminish across northern OK this afternoon. Later today, new thunderstorms are expected to develop in a hot and very unstable air mass in vicinity of the surface low near ABI/SJT. These slow-moving storms will have some damaging wind and hail risk through the evening.