Alert archive / Maryland / 1999
Weather alerts in Maryland, September 1999
33 weather alerts in September 1999, 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 September 1999. Tap one for its archive.
- Alerts
- 33
- Warnings
- 29
- Watches
- 4
- Advisories
- 0
- Busiest day
- September 16, 199917 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 |
|---|---|---|---|---|
| Sep 5, 12:00 AM EDT | Tornado Watch | SPC | Saint Mary's, Somerset, Worcester | 8 hr |
| Sep 5, 8:00 AM EDT | Tornado Watch | SPC | Anne Arundel, Calvert, Charles, Howard, Kent, Montgomery and 5 more | 8 hr |
| Sep 5, 4:00 PM EDT | Tornado Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 12 more | 6 hr |
| Sep 6, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 47 min |
| Sep 7, 8:08 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 62 min |
| Sep 9, 5:42 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 63 min |
| Sep 9, 6:23 PM EDT | Flash Flood Warning | LWX | Howard | 62 min |
| Sep 9, 7:37 PM EDT | Flash Flood Warning | LWX | Baltimore, Howard | 93 min |
| Sep 9, 7:37 PM EDT | Flash Flood Warning | LWX | City of Baltimore | 93 min |
| Sep 9, 7:54 PM EDT | Flash Flood Warning | LWX | Montgomery | 91 min |
| Sep 9, 9:32 PM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Sep 15, 9:00 PM EDT | Tornado Watch | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 12 hr |
| Sep 16, 8:04 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 8 hr |
| Sep 16, 8:04 AM EDT | Flash Flood Warning | LWX | Saint Mary's | 8 hr |
| Sep 16, 8:04 AM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 8 hr |
| Sep 16, 8:04 AM EDT | Flash Flood Warning | LWX | Harford | 8 hr |
| Sep 16, 9:25 AM EDT | Flash Flood Warning | PHI | Cecil, Kent, Queen Anne's | 6 hr |
| Sep 16, 9:25 AM EDT | Flash Flood Warning | PHI | Caroline, Talbot | 6 hr |
| Sep 16, 11:25 AM EDT | Flash Flood Warning | LWX | Montgomery | 5 hr |
| Sep 16, 11:25 AM EDT | Flash Flood Warning | LWX | Carroll, Howard | 5 hr |
| Sep 16, 3:12 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 3 hr |
| Sep 16, 3:12 PM EDT | Flash Flood Warning | PHI | Cecil, Kent | 3 hr |
| Sep 16, 4:05 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Prince George's | 3 hr |
| Sep 16, 4:05 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, Harford, Howard, City of Baltimore | 3 hr |
| Sep 16, 4:55 PM EDT | Flash Flood Warning | AKQ | Somerset, Wicomico, Worcester | 3 hr |
| Sep 16, 4:55 PM EDT | Flash Flood Warning | AKQ | Dorchester | 3 hr |
| Sep 16, 6:13 PM EDT | Flash Flood Warning | PHI | Cecil, Kent, Queen Anne's | 3 hr |
| Sep 16, 6:13 PM EDT | Flash Flood Warning | PHI | Caroline, Talbot | 3 hr |
| Sep 16, 8:10 PM EDT | Flash Flood Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 8 hr |
| Sep 29, 11:21 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 49 min |
| Sep 29, 11:55 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 45 min |
| Sep 30, 12:41 AM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard | 44 min |
| Sep 30, 12:55 AM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 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 | 6 |
| Tornado Watch | 4 |
| Flooding | |
| Flash Flood Warning | 23 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Howard County7
- Montgomery County7
- City of Baltimore6
- Saint Mary's County5
- Kent County5
- Prince George's County5
- Queen Anne's County5
- Talbot County5
- Baltimore County5
- Cecil County5
- Somerset County4
- Worcester County4
- Anne Arundel County4
- Calvert County4
- Carroll County4
- Charles County3
- Frederick County3
- Harford County3
- Dorchester County3
- Wicomico County3
- Caroline County3
- Washington County2
- Allegany County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.