Alert archive / Maryland / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 334, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 6, 2020, 4:33 AM EDT for Anne Arundel County, Maryland. It was in force for 42 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 6, 2020, 4:33 AM EDT (08:33 UTC)
- Expired
- Aug 6, 2020, 5:15 AM EDT
- In force
- 42 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Anne Arundel County, MD
The radar
The Sterling radar (KLWX), 79 km from the middle of the area, began a volume at 08:34 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.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 8.6 hours before the alert went out and 72 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 16 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1600 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 6, 4:12 AM EDT, 21 minutes earlier.
Area forecast discussion, Aug 6, 4:12 AM EDT, 21 minutes before
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</html>Hazardous weather outlook, Aug 6, 2:51 AM EDT, 1 hour 42 minutes before
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<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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 5, 8:05 PM EDT | Areal Flood Warning | LWX | Madison, Page | 6 hr |
| Aug 5, 8:14 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison, Rappahannock | 46 min |
| Aug 5, 8:56 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison | 34 min |
| Aug 5, 10:05 PM EDT | Areal Flood Warning | LWX | Rockingham | 2 hr |
| Aug 5, 10:51 PM EDT | Flash Flood Watch | LWX | Albemarle, Amherst, Arlington, Augusta, Clarke, Culpeper and 26 more | 25 hr |
| Aug 5, 11:30 PM EDT | Areal Flood Warning | LWX | Albemarle, Greene, Madison, Rockingham, City of Harrisonburg | 4 hr |
| Aug 6, 1:20 AM EDT | Areal Flood Warning | LWX | Albemarle | 4 hr |
| Aug 6, 4:04 AM EDT | Special Marine Warning | LWX | 86 min | |
| Aug 6, 4:52 AM EDT | Special Marine Warning | LWX | 83 min | |
| Aug 6, 5:20 AM EDT | Special Marine Warning | LWX | 58 min | |
| Aug 6, 5:25 AM EDT | Special Marine Warning | LWX | 53 min | |
| Aug 6, 5:34 AM EDT | Special Marine Warning | LWX | 44 min | |
| Aug 6, 1:32 PM EDT | Special Marine Warning | LWX | 88 min | |
| Aug 6, 2:34 PM EDT | Special Marine Warning | LWX | 78 min | |
| Aug 6, 3:07 PM EDT | Special Marine Warning | LWX | 45 min | |
| Aug 6, 3:43 PM EDT | Flash Flood Warning | LWX | Augusta, City of Staunton | 4 hr |
| Aug 6, 3:47 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Rockingham | 43 min |
| Aug 6, 4:09 PM EDT | Tornado Warning | LWX | Albemarle, Augusta, Greene, Rockingham | 36 min |
| Aug 6, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Augusta | 47 min |
| Aug 6, 4:24 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Greene | 51 min |
| Aug 6, 4:34 PM EDT | Tornado Warning | LWX | Albemarle | 26 min |
| Aug 6, 4:39 PM EDT | Areal Flood Warning | LWX | Albemarle, Augusta, Greene, Rockingham, City of Staunton | 5 hr |
| Aug 6, 4:53 PM EDT | Areal Flood Warning | LWX | Arlington, Fairfax, City of Alexandria | 109 min |
| Aug 6, 4:55 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Greene, Madison, Orange, City of Charlottesville | 65 min |
| Aug 6, 4:59 PM EDT | Tornado Warning | LWX | Albemarle, City of Charlottesville | 7 min |
| Aug 6, 5:08 PM EDT | Areal Flood Warning | LWX | Albemarle, Greene, Orange, City of Charlottesville | 4 hr |
| Aug 6, 5:11 PM EDT | Special Marine Warning | LWX | 38 min | |
| Aug 6, 5:25 PM EDT | Flash Flood Warning | LWX | Albemarle, City of Charlottesville | 2 hr |
| Aug 6, 5:28 PM EDT | Severe Thunderstorm Warning | LWX | Orange | 47 min |
| Aug 6, 6:22 PM EDT | Severe Thunderstorm Warning | LWX | Spotsylvania | 38 min |
| Aug 6, 6:51 PM EDT | Flash Flood Warning | LWX | Spotsylvania | 3 hr |
| Aug 6, 7:01 PM EDT | Special Marine Warning | LWX | 72 min | |
| Aug 6, 7:09 PM EDT | Areal Flood Warning | LWX | King George, Spotsylvania, Stafford, City of Fredericksburg | 5 hr |
| Aug 6, 7:15 PM EDT | Severe Thunderstorm Warning | LWX | King George | 45 min |
| Aug 6, 7:22 PM EDT | Severe Thunderstorm Warning | LWX | Spotsylvania | 26 min |
| Aug 6, 7:31 PM EDT | Severe Thunderstorm Warning | LWX | King George | 30 min |
| Aug 6, 5:25 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 17 min |
| Aug 6, 5:28 AM EDT | Areal Flood Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 94 min |
| Aug 6, 5:30 AM EDT | Areal Flood Warning | LWX | Baltimore, City of Baltimore | 5 hr |
| Aug 6, 6:56 PM EDT | Areal Flood Warning | LWX | Saint Mary's | 4 hr |
| Aug 6, 2:11 PM EDT | Severe Thunderstorm Warning | LWX | Pendleton | 20 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.