Weather alerts in Maryland, 1990
89 weather alerts in 1990, 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 1990. Tap one for its archive.
- Alerts
- 89
- Warnings
- 89
- Watches
- 0
- Advisories
- 0
- Busiest month
- July33 alerts
- Busiest day
- July 1, 199011 alerts
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 |
|---|---|---|---|---|
| Apr 1, 7:40 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 65 min |
| Apr 2, 4:41 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 64 min |
| Apr 2, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 65 min |
| May 10, 3:47 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 58 min |
| May 10, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Dorchester | 46 min |
| May 10, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 46 min |
| May 10, 5:48 PM EDT | Severe Thunderstorm Warning | LWX | Caroline, Dorchester | 27 min |
| May 10, 6:58 PM EDT | Severe Thunderstorm Warning | LWX | Wicomico | 47 min |
| May 13, 4:16 PM EDT | Tornado Warning | LWX | Frederick | 29 min |
| May 13, 4:19 PM EDT | Tornado Warning | LWX | Carroll | 41 min |
| May 13, 5:21 PM EDT | Flash Flood Warning | LWX | Carroll | 2 hr |
| May 13, 5:49 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 56 min |
| May 16, 7:39 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 66 min |
| Jun 3, 6:01 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 59 min |
| Jun 8, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 60 min |
| Jun 8, 5:59 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 61 min |
| Jun 8, 6:27 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 93 min |
| Jun 8, 6:27 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 93 min |
| Jun 8, 7:18 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard | 57 min |
| Jun 8, 8:10 PM EDT | Tornado Warning | LWX | Queen Anne's, Talbot | 35 min |
| Jun 8, 8:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard | 30 min |
| Jun 9, 5:19 PM EDT | Flash Flood Warning | RLX | Garrett | 116 min |
| Jun 9, 5:19 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 116 min |
| Jun 9, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 69 min |
| Jun 9, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard | 90 min |
| Jun 9, 5:55 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 65 min |
| Jun 9, 6:47 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 58 min |
| Jun 18, 3:54 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 66 min |
| Jun 18, 3:57 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 63 min |
| Jun 18, 4:17 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 28 min |
| Jun 18, 4:24 PM EDT | Severe Thunderstorm Warning | LWX | Howard | 66 min |
| Jun 18, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Jun 30, 8:28 PM EDT | Severe Thunderstorm Warning | RLX | Allegany | 62 min |
| Jun 30, 8:47 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 58 min |
| Jun 30, 9:51 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 69 min |
| Jun 30, 11:17 PM EDT | Flash Flood Warning | RLX | Garrett | 3 hr |
| Jun 30, 11:17 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 3 hr |
| Jul 1, 2:05 AM EDT | Flash Flood Warning | RLX | Garrett | 55 min |
| Jul 1, 2:00 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 60 min |
| Jul 1, 2:59 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 61 min |
| Jul 1, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 61 min |
| Jul 1, 3:50 PM EDT | Tornado Warning | LWX | Charles, Saint Mary's | 40 min |
| Jul 1, 5:05 PM EDT | Severe Thunderstorm Warning | LWX | Wicomico, Worcester | 55 min |
| Jul 5, 3:25 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 65 min |
| Jul 5, 3:26 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 64 min |
| Jul 5, 3:43 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 62 min |
| Jul 5, 3:53 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 37 min |
| Jul 5, 4:05 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 40 min |
| Jul 5, 7:38 PM EDT | Severe Thunderstorm Warning | LWX | Worcester | 52 min |
| Jul 9, 6:57 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 63 min |
| Jul 9, 8:29 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 61 min |
| Jul 11, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 65 min |
| Jul 12, 5:54 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 66 min |
| Jul 12, 7:37 PM EDT | Flash Flood Warning | LWX | Baltimore, Cecil, Harford | 2 hr |
| Jul 12, 7:37 PM EDT | Flash Flood Warning | LWX | Queen Anne's | 2 hr |
| Jul 12, 7:37 PM EDT | Flash Flood Warning | LWX | Anne Arundel, City of Baltimore | 2 hr |
| Jul 12, 11:34 PM EDT | Flash Flood Warning | RLX | Garrett | 116 min |
| Jul 12, 11:50 PM EDT | Flash Flood Warning | RLX | Allegany | 115 min |
| Jul 13, 12:42 AM EDT | Flash Flood Warning | RLX | Allegany, Garrett | 3 hr |
| Jul 13, 5:22 AM EDT | Flash Flood Warning | RLX | Garrett | 3 hr |
| Jul 14, 11:25 AM EDT | Tornado Warning | LWX | Caroline | 50 min |
| Jul 15, 2:49 PM EDT | Flash Flood Warning | RLX | Allegany | 116 min |
| Jul 15, 4:06 PM EDT | Flash Flood Warning | LWX | Washington | 2 hr |
| Jul 15, 4:49 PM EDT | Flash Flood Warning | LWX | Washington | 116 min |
| Jul 15, 5:44 PM EDT | Flash Flood Warning | LWX | Frederick | 61 min |
| Aug 13, 6:56 PM EDT | Severe Thunderstorm Warning | LWX | Kent, Queen Anne's | 64 min |
| Aug 13, 8:21 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 69 min |
| Aug 13, 9:12 PM EDT | Severe Thunderstorm Warning | LWX | Caroline, Kent, Queen Anne's | 63 min |
| Aug 29, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 91 min |
| Aug 29, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 81 min |
| Aug 29, 7:22 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 68 min |
| Sep 6, 7:13 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 2 hr |
| Sep 7, 5:33 PM EDT | Severe Thunderstorm Warning | LWX | Wicomico, Worcester | 42 min |
| Sep 12, 4:21 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 2 hr |
| Sep 16, 4:41 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 2 hr |
| Sep 16, 4:57 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 2 hr |
| Sep 16, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 90 min |
| Oct 13, 2:12 AM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| Oct 13, 4:16 AM EDT | Flash Flood Warning | LWX | Washington | 3 hr |
| Oct 18, 3:52 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 68 min |
| Oct 18, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, City of Baltimore | 62 min |
| Oct 18, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Howard | 62 min |
| Oct 18, 4:55 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 35 min |
| Oct 18, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, City of Baltimore | 48 min |
| Oct 18, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 48 min |
| Oct 23, 6:45 AM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Oct 23, 7:51 AM EDT | Flash Flood Warning | RLX | Allegany | 2 hr |
| Oct 23, 9:50 AM EDT | Flash Flood Warning | LWX | Montgomery | 70 min |
| Dec 30, 8:30 PM EST | Flash Flood Warning | RLX | Garrett | 3 hr |
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 | 63 |
| Tornado Warning | 5 |
| Flooding | |
| Flash Flood Warning | 21 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Garrett County15
- Montgomery County13
- Frederick County11
- Washington County7
- Carroll County7
- Prince George's County6
- Anne Arundel County6
- Baltimore County6
- Howard County6
- Harford County6
- Cecil County5
- Allegany County5
- Saint Mary's County4
- Charles County4
- City of Baltimore4
- Queen Anne's County4
- Calvert County3
- Caroline County3
- Wicomico County3
- Worcester County3
- Dorchester County2
- Kent County2
- Talbot County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19891991
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. Rebuilt daily.