Alert archive / Maryland / Winter Weather Advisories
Winter Weather Advisories in Maryland, 2021
34 winter weather advisories in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of winter weather advisories reaches back to 2005.
Winter Weather Advisories by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Winter Weather Advisories
- 34
- Busiest month
- February20 winter weather advisories
- Busiest day
- January 25, 20213 winter weather advisories
Over time
By month
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 |
|---|---|---|---|---|
| Jan 2, 5:37 PM EST | Winter Weather Advisory | LWX | Allegany, Carroll, Frederick, Washington | 30 hr |
| Jan 16, 3:22 AM EST | Winter Weather Advisory | LWX | 30 hr | |
| Jan 19, 2:13 AM EST | Winter Weather Advisory | LWX | 35 hr | |
| Jan 25, 1:05 AM EST | Winter Weather Advisory | LWX | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more | 36 hr |
| Jan 25, 2:49 PM EST | Winter Weather Advisory | AKQ | Dorchester, Wicomico | 10 hr |
| Jan 25, 3:08 PM EST | Winter Weather Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 34 hr |
| Jan 30, 4:34 AM EST | Winter Weather Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 38 hr |
| Jan 30, 3:44 PM EST | Winter Weather Advisory | PHI | Caroline, Queen Anne's | 72 hr |
| Jan 31, 6:50 PM EST | Winter Weather Advisory | LWX | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 7 more | 42 hr |
| Feb 2, 11:16 PM EST | Winter Weather Advisory | LWX | Allegany | 8 hr |
| Feb 4, 4:54 AM EST | Winter Weather Advisory | LWX | Allegany | 28 hr |
| Feb 6, 3:22 AM EST | Winter Weather Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Howard, Montgomery and 4 more | 33 hr |
| Feb 6, 3:23 AM EST | Winter Weather Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 36 hr |
| Feb 6, 3:35 AM EST | Winter Weather Advisory | AKQ | Dorchester | 35 hr |
| Feb 10, 3:33 AM EST | Winter Weather Advisory | LWX | Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Frederick and 6 more | 30 hr |
| Feb 10, 3:45 AM EST | Winter Weather Advisory | AKQ | Dorchester, Wicomico | 27 hr |
| Feb 10, 3:47 AM EST | Winter Weather Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 32 hr |
| Feb 11, 3:28 AM EST | Winter Weather Advisory | LWX | Calvert, Charles, Saint Mary's | 30 hr |
| Feb 11, 3:39 AM EST | Winter Weather Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 3 days |
| Feb 12, 3:10 PM EST | Winter Weather Advisory | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 43 hr |
| Feb 12, 3:21 PM EST | Winter Weather Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 43 hr |
| Feb 14, 10:00 AM EST | Winter Weather Advisory | LWX | Allegany, Baltimore, Carroll, Frederick, Harford, Howard and 2 more | 44 hr |
| Feb 15, 4:24 AM EST | Winter Weather Advisory | LWX | Baltimore, Carroll, Cecil, Harford, Howard, Montgomery | 25 hr |
| Feb 17, 9:56 AM EST | Winter Weather Advisory | LWX | Calvert, Saint Mary's | 27 hr |
| Feb 17, 3:10 PM EST | Winter Weather Advisory | AKQ | Dorchester, Somerset, Wicomico | 45 hr |
| Feb 17, 3:43 PM EST | Winter Weather Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 47 hr |
| Feb 18, 1:05 PM EST | Winter Weather Advisory | LWX | Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Frederick and 6 more | 23 hr |
| Feb 21, 3:17 PM EST | Winter Weather Advisory | LWX | Allegany, Baltimore, Carroll, Cecil, Frederick, Harford and 4 more | 24 hr |
| Feb 25, 8:03 PM EST | Winter Weather Advisory | LWX | Allegany | 37 hr |
| Mar 15, 2:33 PM EDT | Winter Weather Advisory | LWX | Allegany | 20 hr |
| Mar 31, 9:17 AM EDT | Winter Weather Advisory | LWX | 41 hr | |
| Nov 14, 2:05 AM EST | Winter Weather Advisory | LWX | Allegany | 31 hr |
| Dec 23, 11:43 PM EST | Winter Weather Advisory | LWX | Allegany, Frederick, Washington | 3 hr |
| Dec 26, 12:21 PM EST | Winter Weather Advisory | LWX | Allegany | 27 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allegany County13
- Carroll County9
- Frederick County9
- Washington County9
- Baltimore County9
- Howard County9
- Montgomery County9
- Harford County8
- Cecil County7
- City of Baltimore7
- Anne Arundel County6
- Prince George's County6
- Dorchester County6
- Caroline County6
- Queen Anne's County6
- Wicomico County5
- Kent County5
- Talbot County5
- Calvert County5
- Saint Mary's County5
- Charles County4
- Somerset County3
- Worcester County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.