Maryland, 2020
The year's recorded storm events, federal disaster declarations and flood insurance claims.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders.
Events by hazard
Includes events recorded by forecast zone. The state's yearly total for 2020 was 1,128 against 1,208 in 2019.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 4 Aug 2020 | St. Mary's | Tropical Storm | — | $750,000 | 1 | — |
| 5 Jul 2020 | Anne Arundel | Thunderstorm Wind | 69 mph | $100,000 | — | 19 |
| 4 Aug 2020 | Forecast zone | Tropical Storm | — | $100,000 | — | 1 |
| 3 Sep 2020 | Anne Arundel | Tornado | EF0 | $1,250,000 | — | — |
| 4 Aug 2020 | Calvert | Tropical Storm | — | $750,000 | — | — |
| 7 Feb 2020 | Carroll | Tornado | EF1 | $574,000 | — | — |
| 13 Apr 2020 | Montgomery | Thunderstorm Wind | 86 mph | $500,000 | — | — |
| 7 Feb 2020 | Frederick | Tornado | EF1 | $340,000 | — | — |
| 13 Apr 2020 | Montgomery | Thunderstorm Wind | 69 mph | $300,000 | — | — |
| 13 Apr 2020 | Carroll | Tornado | EF1 | $300,000 | — | — |
| 7 Feb 2020 | Calvert | Thunderstorm Wind | 70 mph | $300,000 | — | — |
| 4 Aug 2020 | Wicomico | Tropical Storm | — | $250,000 | — | — |
| 4 Aug 2020 | Dorchester | Tropical Storm | — | $250,000 | — | — |
| 4 Aug 2020 | Forecast zone | Tropical Storm | — | $250,000 | — | — |
| 4 Aug 2020 | Forecast zone | Tropical Storm | — | $250,000 | — | — |
| 4 Aug 2020 | Somerset | Tropical Storm | — | $250,000 | — | — |
| 4 Aug 2020 | Calvert | Tornado | EF0 | $250,000 | — | — |
| 25 Jun 2020 | Montgomery | Thunderstorm Wind | 63 mph | $250,000 | — | — |
| 4 Aug 2020 | Wicomico | Tornado | EF2 | $230,000 | — | — |
| 4 Aug 2020 | Worcester | Tornado | EF2 | $150,000 | — | — |
| 21 Jul 2020 | Charles | Thunderstorm Wind | 81 mph | $150,000 | — | — |
| 22 Jun 2020 | Howard | Thunderstorm Wind | 69 mph | $150,000 | — | — |
| 22 Jul 2020 | Montgomery | Thunderstorm Wind | 69 mph | $100,000 | — | — |
| 1 Aug 2020 | Washington | Thunderstorm Wind | 69 mph | $50,000 | — | — |
| 3 Sep 2020 | Anne Arundel | Thunderstorm Wind | 81 mph | $100,000 | — | — |
| 7 Feb 2020 | Montgomery | Tornado | EF1 | $92,000 | — | — |
| 7 Feb 2020 | Montgomery | Tornado | EF0 | $70,000 | — | — |
| 8 Apr 2020 | Montgomery | Thunderstorm Wind | 63 mph | $50,000 | — | — |
| 6 Jul 2020 | Baltimore | Thunderstorm Wind | 75 mph | $50,000 | — | — |
| 24 Jul 2020 | Baltimore | Flash Flood | — | $50,000 | — | — |
| 7 Jul 2020 | St. Mary's | Flash Flood | — | $50,000 | — | — |
| 24 Jul 2020 | Baltimore | Flash Flood | — | $50,000 | — | — |
| 3 Sep 2020 | Anne Arundel | Thunderstorm Wind | 75 mph | $50,000 | — | — |
| 3 Sep 2020 | Baltimore | Thunderstorm Wind | 69 mph | $50,000 | — | — |
| 10 Sep 2020 | Montgomery | Flash Flood | — | $50,000 | — | — |
| 4 Aug 2020 | Wicomico | Tornado | EF0 | $50,000 | — | — |
| 25 Jun 2020 | Montgomery | Thunderstorm Wind | 68 mph | $50,000 | — | — |
| 25 Jun 2020 | Montgomery | Thunderstorm Wind | 70 mph | $50,000 | — | — |
| 4 Aug 2020 | Worcester | Tornado | EF0 | $20,000 | — | — |
| 4 Aug 2020 | Worcester | Tornado | EF0 | $15,000 | — | — |
Up to 40 events with deaths, injuries, damage of $50,000 or more, or a tornado rating, ranked by deaths, injuries and damage.
Federal disaster declarations in 2020
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 26 Mar 2020 | DR-4491 | Major disaster | Biological | Covid-19 Pandemic | 24 |
| 13 Mar 2020 | EM-3430 | Emergency | Biological | Covid-19 | 24 |
Flood insurance claims with a 2020 date of loss
401 NFIP claims, 275 of them paid, for $4,749,201.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (1 Oct 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 1 Oct 2026.