Flood in Maryland

Events

1,471

Deaths

2

Injuries

4

Damage

$81 million

• Flash Flooding and Flood in Maryland, June 24 to 28, 20065 deaths · 1 injured · $5.5 million · 24 eventsA weak cold front settled over the forecast area from June 23 until June 27. Waves of low pressure rode northeast along the front. Flow in the atmosphere was parallel to the boundary, producing several rounds of training echoes.
• Flash Flooding and Flooding in Maryland, July 30 to 31, 20162 deaths · $22 million · 26 eventsA boundary remained overhead on the 30th of July. Hot and humid conditions led to an unstable atmosphere. The instability along with the boundary caused a few severe thunderstorms to develop.
• Flash Flooding and Flooding in Maryland, June 27 to 28, 20152 deaths · $30,000 · 24 eventsPotent low pressure passed by to our west, and the warm front associated with the low moved through our area during this time. Warm and moist air near and south of the boundary led to an unstable atmosphere, while forcing from the warm front provided the lift.
• Flash Flooding and Flooding in Maryland, September 1 to 3, 20211 death · 4 injured · $1.2 million · 66 eventsThe remnants of Ida produced widespread flooding along with instances of flash flooding across the area. Tropical moisture infiltrated the area and there were moderate amounts of instability as well.
• Flash Flooding and Flooding in Maryland, May 27 to 28, 20181 death · $22 million · 33 eventsA cold front sagged into Maryland during the afternoon of May 27th. Heavy rain trained to the northeast of Baltimore early in the afternoon, causing flash flooding.
• Flash Flooding and Flooding in Maryland, August 31, 20182 deaths · 31 eventsShowers and thunderstorms developed around a stalled boundary. A slow storm motion combined with copious amounts of moisture led to heavy rain.
• Tornadoes and Tropical Storm in Maryland, August 4 to 5, 20201 death · 1 injured · $1.9 million · EF1 · 44 eventsTropical Storm Isaias moved up the east coast, passing through southern Maryland on the morning of Tuesday, August 4th, 2020, spawning several tornadoes as well as flooding rain and tropical storm force winds.
• Flash Flood and Flooding in Maryland, July 7 to 8, 20052 deaths · 50 kt wind · 11 eventsThe remnants of Tropical Storm Cindy moved across the Mid Atlantic on Thursday and Friday, July 7 and July 8. The primary hazardous conditions that developed were from the torrential rainfall associated with this storm.
• Tropical Storm and Flash Flooding in Maryland, August 27 to 28, 20111 death · $4.1 million · 15 eventsHurricane Irene produced heavy flooding rain, tropical storm force wind gusts and caused one wind related death across the Eastern Shore. Preliminary damage estimates were around three million dollars and approximately 85,000 homes and businesses lost power.
• Flooding and Strong Wind in Maryland, October 8, 20051 death · 3 injured · $230,000 · 9 eventsThe remnants of Tropical Storm Tammy caused widespread heavy rainfall between 3 to 7 inches across the region. Numerous reports of flooded roads were received due to the prolonged rains.
• Flash Flooding and Flooding in Maryland, September 7 to 8, 20111 death · 69 eventsAbnormally moist atmosphere across the mid-Atlantic allowed showers and thunderstorms to produce exceptional rainfall rates across portions of Maryland as the remnants of Tropical Depression Lee interacted with a nearly stationary boundary near the Mason-Dixon line.
• Flash Flooding and Flooding in Maryland, May 15 to 17, 2018$49 million · 24 eventsA cold front slowly sagged southward through Pennsylvania during the afternoon hours of May 15th. A line of storms spread ahead of this front, causing a widespread 1-3 inches of rain across North Central and Northeast Maryland.
• Flooding in Maryland, January 19 to 22, 1996$60 million · 4 events*** River Flooding ***High dew point temperatures melted most of the snow on the ground within 12 hours, with liquid water equivalent ranging from 1 to 3 inches.
• Flash Flooding and Flooding in Maryland, May 18 to 19, 20151 death · $15,000 · 6 eventsA cold front was located to the north of the Mid-Atlantic and warm and humid conditions persisted through the evening hours. A bay breeze formed across North-Central Maryland and led to multiple rounds of showers and thunderstorms in this area.
• Flash Flooding and Flooding in Maryland, August 12 to 13, 2014$4.8 million · 31 eventsHigh pressure resided across the east coast while a warm front was located across the Carolinas. Moist air continued to move into the Mid Atlantic as showers intensified ahead of the warm front. Heavy rain produced flooding in parts of the Washington DC and Baltimore Metro Areas.
• Flooding in Maryland, September 6 to 10, 1996$11 million · 4 eventsTorrential rains associated with Tropical Storm Fran caused the rapid onset of river flooding along the headwaters of the Potomac River late on the 6th, spreading gradually southeast throughout the entire basin by early on the 10th.
• Flooding and High Wind in Maryland, September 18 to 21, 20033 injured · $2.2 million · 50 kt wind · 9 eventsOn September 18, 2003, Hurricane Isabel made landfall on the North Carolina Coast. Its wind field extended for hundreds of miles from the storm's center. As bad as it was across Maryland and Virginia, it could have been much worse. The air at the surface was relatively cool.
• Flooding and Coastal Flood in Maryland, October 29 to 30, 2012$5.0 million · 52 kt wind · 15 eventsPost Tropical Storm Sandy caused an initial estimate of $5 million dollars in damage in the Eastern Shore of Maryland.
• Flooding and Coastal Flood in Maryland, May 11 to 12, 20082 injured · $406,000 · 50 kt wind · 20 eventsA potent storm system crossed the region May 12th. Warm and moist air filtered in ahead of the system, bringing widespread showers and thunderstorms with heavy rain.
• Tornado and Flash Flood in Maryland, July 22 to 24, 20171 injured · $10 · EF2 · 9 eventsA stalled frontal boundary was the focus for several rounds of thunderstorms that produced damaging winds and flooding in spots.
• Flash Flooding and Flooding in Maryland, September 12 to 13, 2023$500,000 · 19 eventsA slow moving cold front moved into the area during the evening of the 12th into the overnight and early morning hours of the 13th. Moisture pooling ahead of the cold front caused instability to increase in addition to added atmospheric moisture.
• Flash Flood and Flood in Maryland, September 18 to 20, 2004$1.0 million · 2 eventsThe remnants of Hurricane Ivan interacting with a slowly moving cold front caused very heavy rain to fall during the late morning and early afternoon of the 18th in the eastern part of the county. Flooding was reported along the Big Elk Creek along Maryland State Route 7.
• Flooding in Maryland, October 9 to 11, 2016$1.0 million · 2 eventsThe combination of a cold front moving through the Mid Atlantic and Post Tropical Cyclone Matthew tracking northeast just off the North Carolina and Virginia coasts, produced heavy rain which caused flooding across portions of the Lower Maryland Eastern Shore from early Sunday…
• Flash Flooding and Flooding in Maryland, September 10 to 11, 2020$150,000 · 41 eventsA surface trough between an approaching cold front from the west and a tropical disturbance offshore resulted in a band of heavy showers and thunderstorms along the I-95 corridor on the afternoon/evening of 9/10, resulting in multiple instances flooding and flash flooding.
• Flood and Damaging Winds in Maryland, March 4 to 5, 2008$432,000 · 63 kt wind · 17 eventsAn area of low pressure moving over West Virginia pushed a strong cold front through the region during the early morning hours of March 5th. This front triggered several strong to severe thunderstorms with gusty winds as well as heavy rain.

Flood everywhereEvery kind of event in Maryland

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.