Alert archive / Maryland / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 404, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 27, 2020, 8:30 PM EDT for Allegany County, Maryland; Mineral County, West Virginia. It was in force for 15 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 27, 2020, 8:30 PM EDT (00:30 UTC)
- Expired
- Aug 27, 2020, 8:45 PM EDT
- In force
- 15 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Allegany County, MD, Mineral County, WV
The radar
The Sterling radar (KLWX), 130 km from the middle of the area, began a volume at 00:32 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 27, 2:46 PM EDT, 5 hours 44 minutes earlier.
Area forecast discussion, Aug 27, 2:46 PM EDT, 5 hours 44 minutes before
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</html>Hazardous weather outlook, Aug 27, 1:36 PM EDT, 6 hours 54 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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</html>The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 12:51 PM EDT | Small Craft Advisory | LWX | 44 hr | |
| Aug 28, 12:51 PM EDT | Small Craft Advisory | LWX | 41 hr | |
| Aug 28, 1:44 PM EDT | Special Marine Warning | LWX | 46 min | |
| Aug 28, 3:52 PM EDT | Special Marine Warning | LWX | 98 min | |
| Aug 28, 4:13 PM EDT | Special Marine Warning | LWX | 92 min | |
| Aug 28, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, City of Winchester | 41 min |
| Aug 28, 4:59 PM EDT | Flash Flood Watch | LWX | Arlington, Clarke, Culpeper, Fairfax, Fauquier, Frederick and 13 more | 11 hr |
| Aug 28, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Rappahannock | 39 min |
| Aug 28, 5:25 PM EDT | Special Marine Warning | LWX | 95 min | |
| Aug 28, 5:29 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Loudoun, Prince William | 46 min |
| Aug 28, 5:39 PM EDT | Special Marine Warning | LWX | 57 min | |
| Aug 28, 5:45 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church | 45 min |
| Aug 28, 5:52 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, Loudoun, Prince William, City of Fairfax | 38 min |
| Aug 28, 6:01 PM EDT | Special Marine Warning | LWX | 44 min | |
| Aug 28, 6:17 PM EDT | Areal Flood Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Falls Church | 5 hr |
| Aug 28, 6:17 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, City of Alexandria | 43 min |
| Aug 28, 6:22 PM EDT | Areal Flood Warning | LWX | Rockingham | 2 hr |
| Aug 28, 6:30 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham, Shenandoah | 45 min |
| Aug 28, 6:32 PM EDT | Areal Flood Warning | LWX | Arlington | 5 hr |
| Aug 28, 6:38 PM EDT | Special Marine Warning | LWX | 97 min | |
| Aug 28, 6:51 PM EDT | Flash Flood Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Falls Church | 93 min |
| Aug 28, 6:57 PM EDT | Special Marine Warning | LWX | 93 min | |
| Aug 28, 7:24 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham | 35 min |
| Aug 28, 7:43 PM EDT | Special Marine Warning | LWX | 92 min | |
| Aug 28, 7:54 PM EDT | Areal Flood Warning | LWX | Page, Rockingham, Shenandoah | 47 min |
| Aug 28, 1:51 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 24 min |
| Aug 28, 3:02 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 43 min |
| Aug 28, 3:07 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 38 min |
| Aug 28, 3:19 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Harford | 41 min |
| Aug 28, 3:45 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 21 min |
| Aug 28, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 43 min |
| Aug 28, 4:33 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Frederick, Howard, Montgomery, Prince George's | 42 min |
| Aug 28, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 33 min |
| Aug 28, 7:19 PM EDT | Areal Flood Warning | LWX | Prince George's | 112 min |
| Aug 28, 7:41 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 49 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2020Severe Thunderstorm Warnings in West Virginia, 2020Every severe thunderstorm warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.