Hurricane Debby
One of the tropical cyclone disasters on NOAA’s billion-dollar list: $2.5 billion in losses at 2024 prices ($2.5 billion at the time) and 17 deaths.
What the offices filed during it
The 90 most significant tropical cyclone episodes filed in these dates, colored by kind.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Losses, 2024 dollars
- $2.5 billion
- Losses at the time
- $2.5 billion
- Deaths
- 17
The losses and deaths are NCEI’s, counting everything the disaster did. The episodes below are only what the Weather Service filed in its Storm Events record, which counts damage differently and often not at all, so the two never add up and are shown apart.
By state, as filed
| State | Events | Deaths | Injuries | Damage filed |
|---|---|---|---|---|
| Florida | 78 | 7 | 1 | $154 million |
| New York | 105 | 0 | 0 | $74 million |
| Pennsylvania | 115 | 0 | 0 | $9.2 million |
| Alaska | 7 | 0 | 0 | $6.7 million |
| Ohio | 148 | 0 | 0 | $6.0 million |
| North Carolina | 161 | 3 | 0 | $3.6 million |
| Georgia | 56 | 1 | 0 | $2.4 million |
| Virginia | 93 | 0 | 2 | $827,000 |
| South Carolina | 143 | 0 | 3 | $735,000 |
| Iowa | 14 | 0 | 0 | $159,000 |
| Vermont | 2 | 0 | 0 | $150,000 |
| Arizona | 23 | 1 | 0 | $127,000 |
| New Jersey | 27 | 0 | 0 | $110,000 |
| New Mexico | 9 | 1 | 1 | $105,000 |
| Minnesota | 18 | 0 | 0 | $71,000 |
| West Virginia | 6 | 0 | 0 | $50,000 |
| Delaware | 5 | 0 | 0 | $50,000 |
| Texas | 2 | 0 | 0 | $30,000 |
| New Hampshire | 17 | 0 | 0 | $5,000 |
| Maine | 2 | 0 | 0 | $5,000 |
| Kentucky | 2 | 0 | 0 | $2,000 |
| Michigan | 2 | 0 | 0 | $1,000 |
| Utah | 25 | 1 | 0 | |
| Maryland | 21 | 0 | 0 | |
| Colorado | 20 | 0 | 0 | |
| Nebraska | 5 | 0 | 0 | |
| Nevada | 1 | 0 | 0 | |
| California | 1 | 0 | 0 | |
| District of Columbia | 1 | 0 | 0 |
Episode by episode
- Flash Flood and Damaging Wind in Arizona, August 3, 2024With the subtropical high pressure system centered over the Four Corners Region, the flow across the region was from the southeast.
- Coastal Flood in Alaska, August 4 to 5, 2024Strong low pressure developed in the Bering Sea and pushed a front through the Bering Strait and to the West Coast of Alaska. The strongest winds were associated with the front.
- Tornadoes and Tropical Storm in Florida, August 4 to 5, 2024Hurricane Debby made landfall north of the local area along the Big Bend region of Florida near Steinhatchee around 7 AM EST on August 5th as a Category 1 hurricane with maximum sustained winds of 80 mph and a minimum pressure of 979 mb.
- Flash Flood and Damaging Wind in Maine, August 4, 2024An upper level disturbance brought multiply rounds of showers and thunderstorms on August 4th, as amble low level moisture and instability was in place over Western Maine.
- Tornadoes and Tropical Storm in Florida, August 4 to 5, 2024Hurricane Debby made landfall as a Category 1 storm along the FL Big Bend coast during the early morning of August 5, 2024. Prior to landfall, outer convective bands produced tornadoes across portions of northeast Florida on August 4th.
- Flash Flood and Hail in New Hampshire, August 4, 2024An upper level disturbance brought multiply rounds of showers and thunderstorms on August 4th, as amble low level moisture and instability was in place over New Hampshire.
- Flash Flooding in Vermont, August 4, 2024Scattered thunderstorms produced locally heavy rainfall of 1 to 3 inches, which led to a few reports of flash flooding, most notably in the East Burke area where roads damaged in the prior July 2024 flash floods were once again compromised.
- Flash Flooding and Damaging Winds in South Carolina, August 4, 2024An upper trough axis remained just to the west of the forecast area with a stalled frontal boundary across the Midlands which became a focus for convection on the afternoon of 8/4.
- Tropical Storm in Georgia, August 4 to 6, 2024Hurricane Debby made landfall as a Category 1 storm along the FL Big Bend coast during the early morning of August 5, 2024. Prior to landfall, outer convective bands produced tornadoes across portions of northeast Florida on August 4th.
- Flash Flood in North Carolina, August 4, 2024A slow moving thunderstorm led to flash flooding in Bladen County, NC.
- Flash Flooding in North Carolina, August 4, 2024Along a stalled frontal over the eastern Piedmont of central North Carolina, isolated to scattered showers and storms developed in the afternoon and evening, mainly along and east of the US Highway 1 corridor. Storms over Wake County produced isolated flash flooding.
- Flash Flooding in Virginia, August 4, 2024Scattered thunderstorms along a frontal boundary produced heavy rain which caused flash flooding across portions of eastern Virginia.
- Flash Flood in Arizona, August 4, 2024The center of an area of high pressure was located near the Four Corners, a near |perfect location for the monsoon moisture to continue spreading over northern Arizona. This brought the continuation of daily afternoon and evening showers and thunderstorms to the area.
- Flash Flood in Nevada, August 4, 2024Excess monsoonal moisture from the late July four corners high pressure remained over Nevada in early August due to the high pressure system destabilizing, causing weak upper flow.
- Tropical Storm in Florida, August 4 to 5, 2024Hurricane Debby maintained Category 1 strength, with maximum sustained winds of 70 knots, as it brushed portions of east central Florida and made landfall near Steinhatchee, Florida during the morning August 5th.
- Hurricane and Tropical Storm in Florida, August 5 to 26, 2024Hurricane Debby made landfall along the Taylor County coast as a Category 1 Hurricane on the morning of Monday August 5th. In addition to storm surge flooding along the FL Big Bend coast, around 12 inches of rainfall lead to widespread flooding in Madison and Taylor counties.
- Tropical Storm and Flash Flooding in Georgia, August 5, 2024Hurricane Debby made landfall along the Taylor County coast as a Category 1 Hurricane on the morning of Monday August 5th. In addition to storm surge flooding along the FL Big Bend coast, around 12 inches of rainfall lead to widespread flooding in Madison and Taylor counties.
- Tornadoes and Tropical Storm in South Carolina, August 5 to 9, 2024Debby first developed into a tropical storm about 100 miles west-southwest of Key West, Florida late afternoon on August 3rd, then gradually strengthened to a strong tropical storm while tracking north across the eastern Gulf of Mexico on August 4th.
- Tornado and Flash Flood in New York, August 5, 2024A cold front slowly dropping south across Lake Ontario stalled near/along the south shore of Lake Ontario. As the front approached the Western New York area, shear and instability increased.
- Flood in Alaska, August 5 to 6, 2024Since 2011, Suicide Basin, a side valley that is dammed by the Mendenhall Glacier, fills with water from snowmelt and rainfall then drains during the summer as a glacial outburst flood.
- Flood in California, August 5, 2024A weak push of monsoon moisture plus the ongoing excessive heat fueled isolated showers and thunderstorms over the southern Mojave Desert. One storm produced minor flooding.
- Tropical Storm and Flash Flooding in Georgia, August 5 to 8, 2024Debby first developed into a tropical storm about 100 miles west-southwest of Key West, Florida late afternoon on August 3rd, then gradually strengthened to a strong tropical storm while tracking north across the eastern Gulf of Mexico on August 4th.
- Flash Flooding in New York, August 5, 2024Deep moisture and instability in place over Central New York on this day combined with a slow moving upper level disturbance to trigger heavy rain producing thunderstorms. Localized flashed flooding occurred in a few areas with minimal impact to roads.
- Tornadoes and Flash Flood in Minnesota, August 5, 2024A nearly stationary front was draped across southern Minnesota on the afternoon of Monday, August 5, 2024. A very unstable airmass with strong shear was present along and south of the front.
- Tornadoes and Damaging Winds in Minnesota, August 5, 2024During the evening hours on August 5th, a line of severe thunderstorms brought strong winds to portions of southeast Minnesota. Additionally, an embedded supercell thunderstorm would go on to produce two tornadoes in southeast Minnesota.
- Tornadoes in Iowa, August 5, 2024A severe thunderstorm moved across Worth County on the evening of August 5th producing 3 tornadoes. The tornadoes remained in rural cropland and were all rated as EFUs.
- Tornadoes and Damaging Winds in Iowa, August 5, 2024During the evening hours on August 5th, a line of severe thunderstorms brought strong winds to portions of northeast Iowa. Additionally, an embedded supercell thunderstorm would go on to produce three tornadoes in northeast Iowa.
- Tornado and Damaging Wind in Michigan, August 6, 2024In the morning of August 6, a supercell developed and tracked east-southeast through southern Michigan, far northeast Indiana and far northwest Ohio. This storm produced an EF2 tornado in northwest St. Joseph county from Lewis Lake to the north side of Three Rivers.
- Flash Flooding and Flood in Georgia, August 6, 2024Heavy rainfall associated with Tropical Storm Debby occurred across the CSRA for several days. The event peaked in this region on August 6th in Burke County where multiple reports of flooding were reported.
- Flash Flooding and Damaging Wind in South Carolina, August 6 to 8, 2024Heavy rainfall associated with Tropical Storm Debby occurred across South Carolina for several days resulting in areas of flash flooding. There was also an isolated severe thunderstorm on the 6th.
- Tropical Storm and Flash Flooding in South Carolina, August 6 to 9, 2024After making landfall in the Big Bend area of Florida as a Category 1 hurricane on August 5, Debby weakened to a tropical storm as it slowly moved across southeastern Georgia and offshore before making another landfall along the central SC coast between Charleston and…
- Tornado and Flash Flooding in Pennsylvania, August 6, 2024A shortwave trough over the Great Lakes interacting with a quasi-stationary boundary over eastern Ohio and western PA spawned severe weather from mid afternoon through late evening.
- Tornadoes and Damaging Winds in Ohio, August 6, 2024Between about daybreak and nightfall on August 6th, a wavy surface cold front drifted generally southward from northern OH and near the NY/PA line to southern OH and the northern Mid-Atlantic states.
- Flash Flooding and Hail in New Jersey, August 6, 2024A predecessor rainfall event set up ahead of the remnants of Tropical Storm Debby. A hot and humid airmass was in place, resulting in a very moist and unstable airmass.
- Flash Flooding in Maryland, August 6, 2024Tropical moisture well ahead of Debby caused scattered thunderstorms to produce heavy rainfall. This led to isolated instances of flash flooding in Baltimore County Maryland.
- Tornadoes and Flash Flooding in North Carolina, August 6 to 9, 2024After making landfall in the Big Bend area of Florida as a Category 1 hurricane on August 5, Debby weakened to a tropical storm as it slowly moved across southeastern Georgia and offshore before making another landfall along the central SC coast between Charleston and…
- Flash Flood and Damaging Wind in Arizona, August 6, 2024A line of thunderstorms moved through Nogales resulting in severe wind gusts, property damage, and flash flooding.
- Flash Flooding in New York, August 6, 2024Several rounds of heavy thunderstorms developed over the area on the afternoon of August 6th. A slow moving frontal system stalled out over the area.
- Flash Flood in North Carolina, August 6, 2024As the far outer bands of Tropical Storm Debbie moved northwards showers and thunderstorms developed along the Crystal Coast. The showers and thunderstorms then continued northwards on the morning of August 6th.
- Flash Flooding in New Jersey, August 6, 2024Several rounds of heavy thunderstorms developed over the area on the afternoon of August 6th. A slow moving frontal system stalled out over the area.
- Flash Flooding in Pennsylvania, August 6, 2024A predecessor rainfall event set up ahead of the remnants of Tropical Storm Debby. A hot and humid airmass was in place, resulting in a very moist and unstable airmass. A few showers and thunderstorms developed, producing very heavy rain in southeastern PA.
- Flash Flood and Dust Storm in Arizona, August 6 to 7, 2024With the subtropical high pressure system situated across northern AZ, the steering flow was from the east.
- Flood in Alaska, August 7 to 8, 2024An Atmospheric River brought over 7 inches of rainfall to Seward, AK, with 6 of 7 inches falling within a 48 hour period. Runoff from the rain pushed streams across the area into flood stage, with levees in the region being threatened by erosion.
- Tornadoes and Flash Flooding in North Carolina, August 7 to 8, 2024Tropical Depression Debby slowly made its way through Florida, off the South Carolina coast, then back inland through the western Piedmont of North Carolina during the evening hours of 8 August 2024.
- Flash Flood and Hail in Colorado, August 7, 2024Severe thunderstorms produced hail up to 1.75 inches and winds to 65 mph across parts of the eastern Colorado plains. In addition to this, minor flooding was report along U.S. Highway 34 from the Alexander Mountain Fire.
- Tornado and Flash Flooding in Colorado, August 7 to 10, 2024An upper-level pattern which allowed for a sufficient mid-level monsoonal moisture plume to be established over the region aided in the development of storms, which produced heavy rainfall and lead to some heavy amounts of rain and minor flash flooding from the 7th thru 10th of…
- Flash Flooding in Kentucky, August 7, 2024A cold front moved into eastern Kentucky during the early afternoon hours on Wednesday, August 7th. It then became stationary for much of the remainder of the day, as Tropical Storm (downgraded from Hurricane) Debbie began to move along the southeast Atlantic Coast.
- Flash Flood and Hail in Nebraska, August 7, 2024Severe thunderstorms reported in the Nebraska Panhandle the afternoon and early evening of 8 August.
- Flash Flood in Arizona, August 7, 2024Strong thunderstorm activity, fueled by MLCAPE values of around 1000 J/KG, developed across the Mogollon Rim and the White Mountains and were steered westward into Gila County.
- Flash Flooding and Flooding in North Carolina, August 7 to 12, 2024Deep moisture and a stalled frontal boundary left the area very susceptible to flash flooding from isolated, slow moving storms.
- Flash Flooding and Hail in Arizona, August 7 to 8, 2024Monsoon moisture remained over northern Arizona with dew points ranging from |50-65F, with precipitable water ranging from 1.50 to 0.75 - 0.92. Atmospheric instability was on the higher side as well.
- Flood in Alaska, August 7 to 13, 2024An atmospheric river pumped heavy rain into the western Susitna Valley causing flooding across the Yentna and Skwenta Basins. This rainfall led to rapid river rises, and their tributaries, flooding numerous cabins and lodges across the region.
- Flash Flooding in Arizona, August 7, 2024Thunderstorms across Cochise County and Santa Cruz County resulted in areas of flash flooding.
- Tornado and Tropical Storm in North Carolina, August 7 to 9, 2024After making landfall in the Big Bend area of Florida as a Category 1 hurricane on August 5, Debby weakened to a tropical storm as it slowly moved across southeastern Georgia and offshore.
- Flooding in Alaska, August 7 to 8, 2024Heavy rains associated with an Atmospheric River dropped record setting heavy rain over the Anchorage Bowl causing widespread street flooding with high water on streams in the city.
- Flash Flooding and Strong Wind in North Carolina, August 8, 2024The remnants Tropical Storm Debby made landfall in the Florida Big Bend on the 5th, lifted steadily northeast across southeast Georgia before turning north through the South Carolina coastal plain and the North Carolina Piedmont on the 7th and 8th.
- Flash Flooding and Strong Wind in South Carolina, August 8, 2024The remnants Tropical Storm Debby made landfall in the Florida Big Bend on the 5th, lifted steadily northeast across southeast Georgia before turning north through the South Carolina coastal plain and the North Carolina Piedmont on the 7th and 8th.
- Flash Flooding and Flood in North Carolina, August 8 to 9, 2024The remnants of Hurricane Debbie moved north toward the area on August 8th, 2024. A strong southeast flow of wind on the system's northern extent, along with wet soils due to heavy rainfall, helped to cause downed trees and power lines over portions of North Carolina.
- Flash Flooding and Flooding in Virginia, August 8 to 10, 2024The remnants of Hurricane Debbie moved north toward the area on August 8th, 2024. A strong southeast flow of wind on the system's northern extent, along with wet soils due to heavy rainfall, helped to cause downed trees and power lines over portions of Virginia.
- Tornado and Damaging Winds in Virginia, August 8, 2024Tropical Cyclone Debby tracking northward from the Carolinas across western Virginia produced scattered severe thunderstorms with damaging winds and one tornado across portions of central and southeast Virginia.
- Flash Flooding and Damaging Wind in New Mexico, August 8 to 9, 2024A backdoor front pushed through northern and eastern NM during the morning of August 8th, settling along the east slopes of the central mountain chain. This front replenished monsoon moisture across this part of the state.
- Flash Flood in Arizona, August 8 to 9, 2024Thunderstorms with heavy rainfall went through the Tucson Metro on August 8th resulting in 0.5 to 1.0 inches of rain leading to flash flooding and running washes.
- Tornado and Flash Flooding in Delaware, August 8, 2024Showers and thunderstorms developing along a stationary front resulted in a few showers and thunderstorms developing. A few storms were severe producing damaging wind gusts and a tornado. Additionally training storms led to flash flooding in northern Delaware.
- Flash Flooding and Damaging Wind in Pennsylvania, August 8 to 9, 2024The remnants of Tropical Storm Debby moved through, producing damaging wind gusts with a few severe thunderstorms, and heavy rain.
- Flash Flooding and Heavy Rain in Virginia, August 8 to 9, 2024Tropical Cyclone Debby tracking northward from the Carolinas across western Virginia produced heavy rain which caused flash flooding across portions of south central Virginia.
- Flash Flood and Damaging Winds in Arizona, August 8, 2024An area of strong to severe thunderstorms moved through the Tucson area resulting in wind damage and flash flooding.
- Tornadoes in Virginia, August 8, 2024The remnants of Tropical Cyclone Debby spawned a few tornadoes in northern Virginia and eastern West Virginia.
- Flash Flooding in Ohio, August 8 to 9, 2024A surface trough was oriented south to north across northeast Ohio during the afternoon and early evening of August 8th, 2024, with then Tropical Depression Debby centered over the Carolinas.
- Flash Flooding in North Carolina, August 8, 2024Tropical Cyclone Debby tracking northward from the Carolinas across western Virginia produced heavy rain which caused flash flooding across portions of northeast North Carolina.
- Flash Flooding and Damaging Winds in Utah, August 8 to 11, 2024Monsoonal showers and thunderstorms brought gusty winds and flash flooding to much of Utah.
- Flash Flooding and Flooding in Virginia, August 8 to 9, 2024The remnants of Debby tracked through the area Thursday night into Friday, August 8th into August 9th. Tropical moisture combined with lift from the remnants to cause heavy rain across much of Virginia. The heavy rain led to several instances of flash flooding and flooding.
- Flash Flood and Flooding in West Virginia, August 8 to 10, 2024The remnants of Debby tracked through the area Thursday night into Friday, August 8th into August 9th. Tropical moisture combined with lift from the remnants to cause heavy rain across much of Virginia. The heavy rain led to several instances of flash flooding and flooding.
- Tornado in West Virginia, August 8, 2024The remnants of Tropical Cyclone Debby spawned a few tornadoes in northern Virginia and eastern West Virginia.
- Coastal Flood in Maryland, August 9, 2024Persistent SE flow on the east side of slow moving Tropical Storm Debby resulted in moderate coastal flooding at several locations along the western shore of the Chesapeake Bay.
- Flash Flooding and Flooding in Maryland, August 9, 2024The remnants of Debby tracked through the area Thursday night into Friday, August 8th into August 9th. Tropical moisture combined with lift from the remnants to cause heavy rain across much of Virginia. The heavy rain led to several instances of flash flooding and flooding.
- Coastal Flood in District of Columbia, August 9, 2024Persistent SE flow on the east side of slow moving Tropical Storm Debby caused moderate coastal flooding at DC Waterfront.
- Flash Flooding and Flooding in New York, August 9, 2024A deep plume of tropical moisture had spread over Central New York ahead of the remnants of Tropical Storm Debby. Prolonged torrential rains blanketed the region during the night and early morning hours before becoming enhanced by the approaching tropical remnants.
- Coastal Flood in Virginia, August 9, 2024Persistent SE flow on the east side of slow moving Tropical Storm Debby resulted in moderate coastal flooding at the City of Alexandria.
- Flash Flooding and Flooding in Pennsylvania, August 9 to 10, 2024A deep plume of tropical moisture had spread over Northeast Pennsylvania ahead of the remnants of Tropical Storm Debby. Prolonged torrential rains blanketed the region during the night and early morning hours before becoming enhanced by the approaching tropical remnants.
- Flash Flooding and Flooding in New York, August 9, 2024The remnants of Tropical Cyclone Debby tracked northeast across Central New York on Friday August 9.
- Tornado and Flash Flooding in New York, August 9, 2024On August 9, 2024, remnants of Tropical Storm Debby impacted eastern New York, bringing periods of heavy rain and gusty winds.
- Coastal Flood in Maryland, August 9, 2024The combination of high pressure centered well off the East Coast and Tropical Cyclone Debby tracking northward across western North Carolina, Virginia, and Pennsylvania from Thursday, August 8th through Friday, August 9th, resulted in very strong southeast or south winds which…
- Flash Flooding and Flooding in New York, August 9, 2024The remnants of TS Debby tracked through St. Lawrence County during the afternoon/early evening of August 9, 2024. This produced a 50-75 mile swath of excessive rainfall from 3 to 7 inches which led to widespread flash flooding.
- Flash Flood and Damaging Wind in Texas, August 9 to 10, 2024A line of storms moved through the northwest Panhandles during the evening of August 9th. These brought wind damage to portions of the northwest Texas Panhandle during the evening. Rain lingered into the morning of August 10th, where flash flooding occurred in Amarillo.
- Flash Flooding in North Carolina, August 9 to 10, 2024As the remnants of tropical cyclone Debby lifted into Pennsylvania, a cold front remained draped across western North Carolina. Anomalous moisture remained across the area, along with antecedent conditions being wet for early August.
- Flash Flooding in North Carolina, August 10, 2024Several episodes of heavy rain lead to several instances of flash flooding.
- Flash Flood in Virginia, August 10, 2024Scattered thunderstorms along a frontal boundary produced heavy rain which caused flash flooding across portions of southeast Virginia.
- Flash Flooding in North Carolina, August 10, 2024Scattered thunderstorms along a frontal boundary produced heavy rain which caused flash flooding across portions of northeast North Carolina.
- Flash Flood in Utah, August 10, 2024High pressure over Texas and low pressure over the Baja Coast kept a deep southerly flow of monsoonal moisture across the Four Corners region. Training storms led to significant flash flooding across southeast Utah.
- Flash Flood in South Carolina, August 10, 2024Very deep moisture stayed in place following Tropical Storm Debby. The area was very flood-prone and scattered slow moving storms led to localized flooding especially since a front was stalled in the area.
More
Every billion-dollar disasterEvery storm of 2024The 2024 hurricane seasonTornadoes in 2024
Sources
NOAA NCEI, U.S. Billion-Dollar Weather and Climate Disasters (2025), https://doi.org/10.25921/stkw-7w73, and the Storm Events Database for the episodes.