Alert archive / Maryland / 2020
Weather alerts in Maryland, November 2020
84 weather alerts in November 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in November 2020. Tap one for its archive.
- Alerts
- 84
- Warnings
- 34
- Watches
- 5
- Advisories
- 31
- Busiest day
- November 30, 202024 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 31, 9:14 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 25 hr |
| Nov 1, 3:10 AM EST | Wind Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 36 hr |
| Nov 1, 4:00 AM EST | Winter Weather Advisory | PBZ | 27 hr | |
| Nov 1, 4:55 AM EST | Coastal Flood Advisory | LWX | Baltimore, Saint Mary's, City of Baltimore | 16 hr |
| Nov 1, 6:31 AM EST | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 12 hr |
| Nov 1, 8:45 PM EST | Wind Advisory | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 4 more | 3 hr |
| Nov 2, 1:30 PM EST | Freeze Warning | LWX | Charles, Harford | 19 hr |
| Nov 2, 8:22 PM EST | Freeze Warning | PHI | Cecil | 7 hr |
| Nov 3, 8:41 PM EST | Frost Advisory | LWX | Baltimore, Harford, Howard, Montgomery, City of Baltimore | 12 hr |
| Nov 6, 1:29 AM EST | Dense Fog Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 9 hr |
| Nov 6, 4:20 AM EST | Dense Fog Advisory | LWX | Calvert, Saint Mary's | 5 hr |
| Nov 6, 11:25 PM EST | Dense Fog Advisory | PHI | Caroline, Queen Anne's, Talbot | 10 hr |
| Nov 6, 11:37 PM EST | Dense Fog Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 10 hr |
| Nov 6, 11:45 PM EST | Dense Fog Advisory | LWX | Calvert, Saint Mary's | 9 hr |
| Nov 9, 4:44 AM EST | Dense Fog Advisory | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 3 more | 5 hr |
| Nov 11, 10:30 AM EST | Flash Flood Watch | AKQ | Dorchester, Somerset, Wicomico, Worcester | 31 hr |
| Nov 11, 10:46 AM EST | Flash Flood Watch | LWX | Anne Arundel, Calvert, Charles, Montgomery, Prince George's, Saint Mary's | 16 hr |
| Nov 11, 9:45 PM EST | Areal Flood Advisory | AKQ | Dorchester, Wicomico | 3 hr |
| Nov 11, 9:46 PM EST | Areal Flood Warning | LWX | Calvert, Saint Mary's | 27 hr |
| Nov 11, 10:54 PM EST | Areal Flood Advisory | PHI | Caroline, Talbot | 3 hr |
| Nov 11, 10:57 PM EST | Areal Flood Warning | LWX | Montgomery, Prince George's | 10 hr |
| Nov 11, 11:07 PM EST | Areal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 3 hr |
| Nov 12, 12:56 AM EST | Flash Flood Warning | LWX | Saint Mary's | 3 hr |
| Nov 12, 1:11 AM EST | Areal Flood Warning | LWX | Charles, Saint Mary's | 36 hr |
| Nov 12, 1:43 AM EST | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 2 hr |
| Nov 12, 2:39 AM EST | Areal Flood Warning | LWX | Prince George's | 34 hr |
| Nov 12, 6:06 AM EST | Areal Flood Warning | PHI | Caroline | 4 hr |
| Nov 12, 6:08 AM EST | Areal Flood Advisory | AKQ | Somerset, Wicomico, Worcester | 2 hr |
| Nov 12, 10:15 AM EST | Areal Flood Advisory | PHI | Caroline | 5 hr |
| Nov 12, 12:17 PM EST | Areal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 3 hr |
| Nov 12, 2:52 PM EST | Areal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 3 hr |
| Nov 12, 9:34 PM EST | Areal Flood Warning | PHI | Caroline | 9 hr |
| Nov 14, 8:39 AM EST | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 4 hr |
| Nov 14, 2:06 PM EST | Wind Advisory | LWX | Allegany, Frederick, Washington | 41 hr |
| Nov 15, 3:53 AM EST | Coastal Flood Statement | AKQ | Somerset, Wicomico | 11 hr |
| Nov 15, 3:53 AM EST | Coastal Flood Advisory | AKQ | Dorchester | 13 hr |
| Nov 15, 7:03 AM EST | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Cecil, Charles, Harford, Saint Mary's and 1 more | 15 hr |
| Nov 15, 12:01 PM EST | Coastal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 11 hr |
| Nov 15, 3:02 PM EST | Coastal Flood Warning | LWX | Anne Arundel, Baltimore, Cecil, Harford, City of Baltimore | 10 hr |
| Nov 15, 3:33 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 2 hr |
| Nov 15, 3:38 PM EST | Severe Thunderstorm Warning | LWX | Allegany, Garrett | 55 min |
| Nov 15, 4:56 PM EST | Severe Thunderstorm Warning | LWX | Frederick, Washington | 64 min |
| Nov 15, 4:58 PM EST | Severe Thunderstorm Warning | LWX | Allegany, Garrett, Washington | 47 min |
| Nov 15, 5:35 PM EST | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 5 hr |
| Nov 15, 5:37 PM EST | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 68 min |
| Nov 15, 6:22 PM EST | Severe Thunderstorm Warning | LWX | Montgomery | 53 min |
| Nov 15, 6:28 PM EST | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Harford, Howard, City of Baltimore | 92 min |
| Nov 15, 6:52 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Harford and 7 more | 113 min |
| Nov 15, 6:54 PM EST | Severe Thunderstorm Warning | LWX | Cecil | 66 min |
| Nov 15, 7:12 PM EST | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 6 hr |
| Nov 15, 7:20 PM EST | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 40 min |
| Nov 15, 7:28 PM EST | Severe Thunderstorm Warning | LWX | Anne Arundel, Charles, Prince George's | 47 min |
| Nov 15, 7:40 PM EST | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 80 min |
| Nov 15, 8:16 PM EST | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 59 min |
| Nov 15, 8:42 PM EST | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 63 min |
| Nov 15, 8:57 PM EST | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 63 min |
| Nov 15, 9:47 PM EST | Special Weather Statement | AKQ | Wicomico, Worcester | 43 min |
| Nov 15, 10:33 PM EST | Special Weather Statement | AKQ | Worcester | 42 min |
| Nov 16, 1:47 AM EST | Coastal Flood Advisory | LWX | Saint Mary's | 2 hr |
| Nov 29, 3:21 PM EST | Wind Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 27 hr |
| Nov 29, 7:56 PM EST | Winter Weather Advisory | LWX | 24 hr | |
| Nov 29, 10:21 PM EST | Coastal Flood Watch | LWX | Anne Arundel, Baltimore, City of Baltimore | 10 hr |
| Nov 30, 4:20 AM EST | Winter Storm Warning | LWX | 47 hr | |
| Nov 30, 5:10 AM EST | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 12 hr |
| Nov 30, 5:10 AM EST | High Surf Advisory | AKQ | Worcester | 17 hr |
| Nov 30, 8:13 AM EST | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Harford, City of Baltimore | 16 hr |
| Nov 30, 12:26 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Dorchester, Kent and 6 more | 3 hr |
| Nov 30, 1:07 PM EST | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 11 more | 6 hr |
| Nov 30, 1:11 PM EST | Areal Flood Warning | LWX | Baltimore | 4 hr |
| Nov 30, 1:28 PM EST | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 28 min |
| Nov 30, 1:44 PM EST | Areal Flood Warning | LWX | Baltimore, Harford | 5 hr |
| Nov 30, 2:22 PM EST | Severe Thunderstorm Warning | LWX | Cecil, Harford | 38 min |
| Nov 30, 2:26 PM EST | Special Weather Statement | AKQ | Dorchester | 34 min |
| Nov 30, 2:36 PM EST | Tornado Warning | LWX | Cecil, Harford | 9 min |
| Nov 30, 2:48 PM EST | Areal Flood Warning | PHI | Kent | 8 hr |
| Nov 30, 2:50 PM EST | Tornado Warning | LWX | Cecil | 25 min |
| Nov 30, 3:02 PM EST | Mesoscale Discussion | SPC | Caroline, Dorchester, Queen Anne's, Saint Mary's, Somerset, Talbot and 2 more | 88 min |
| Nov 30, 3:04 PM EST | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 56 min |
| Nov 30, 3:11 PM EST | Tornado Warning | PHI | Caroline, Queen Anne's | 17 min |
| Nov 30, 3:22 PM EST | Special Weather Statement | AKQ | Dorchester | 38 min |
| Nov 30, 4:12 PM EST | Special Weather Statement | AKQ | Dorchester, Somerset, Wicomico | 48 min |
| Nov 30, 4:31 PM EST | Coastal Flood Warning | LWX | Anne Arundel | 3 hr |
| Nov 30, 4:37 PM EST | Mesoscale Discussion | SPC | Caroline, Dorchester, Somerset, Wicomico, Worcester | 53 min |
| Nov 30, 5:00 PM EST | Special Weather Statement | AKQ | Wicomico, Worcester | 45 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 16 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 6 |
| Flooding | |
| Areal Flood Warning | 9 |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 8 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Weather Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Coast and beach | |
| Coastal Flood Warning | 2 |
| Coastal Flood Watch | 1 |
| Coastal Flood Advisory | 9 |
| High Surf Advisory | 1 |
| Coastal Flood Statement | 3 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Wicomico County24
- Dorchester County23
- Caroline County19
- Somerset County19
- Anne Arundel County18
- Saint Mary's County16
- Worcester County16
- Baltimore County15
- Harford County15
- Cecil County13
- Queen Anne's County13
- Talbot County13
- City of Baltimore13
- Prince George's County13
- Kent County11
- Charles County10
- Calvert County10
- Montgomery County9
- Carroll County7
- Frederick County7
- Howard County7
- Washington County4
- Allegany County3
- Garrett County2
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.