Alert archive / Maryland / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 147, NWS Wakefield, VA
NWS Wakefield, VA issued this severe thunderstorm warning at Aug 19, 2020, 10:20 AM EDT for Dorchester County, Wicomico County, Maryland. It was in force for 40 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 19, 2020, 10:20 AM EDT (14:20 UTC)
- Expired
- Aug 19, 2020, 11:00 AM EDT
- In force
- 40 min
- Issued by
- NWS Wakefield, VA
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Dorchester County, MD, Wicomico County, MD
The radar
The Dover AFB radar (KDOX), 60 km from the middle of the area, began a volume at 14:20 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 2.3 hours before the alert went out and 65 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
- 429 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1318 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- -1 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 Wakefield, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 19, 7:13 AM EDT, 3 hours 7 minutes earlier.
Area forecast discussion, Aug 19, 7:13 AM EDT, 3 hours 7 minutes before
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</html>Hazardous weather outlook, Aug 19, 4:02 AM EDT, 6 hours 18 minutes before
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Special weather statement, Aug 19, 8:34 AM EDT, 1 hour 46 minutes before
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</html>The office that day
Everything else NWS Wakefield, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 10:06 PM EDT | Areal Flood Warning | AKQ | Charles City, New Kent | 24 hr |
| Aug 19, 10:14 AM EDT | Special Weather Statement | AKQ | Accomack | 46 min |
| Aug 19, 1:39 PM EDT | Special Weather Statement | AKQ | City of Virginia Beach | 51 min |
| Aug 19, 3:16 PM EDT | Special Weather Statement | AKQ | Dinwiddie | 59 min |
| Aug 19, 3:49 PM EDT | Special Weather Statement | AKQ | Sussex, City of Emporia | 56 min |
| Aug 19, 3:55 PM EDT | Areal Flood Advisory | AKQ | Dinwiddie, Prince George, Surry, Sussex | 3 hr |
| Aug 19, 4:29 PM EDT | Special Weather Statement | AKQ | Brunswick, Greensville, City of Emporia | 61 min |
| Aug 19, 4:45 PM EDT | Special Weather Statement | AKQ | Accomack | 45 min |
| Aug 19, 4:58 PM EDT | Areal Flood Advisory | AKQ | Greensville, City of Emporia | 3 hr |
| Aug 19, 5:05 PM EDT | Areal Flood Advisory | AKQ | James City, Surry | 3 hr |
| Aug 19, 5:32 PM EDT | Special Weather Statement | AKQ | Southampton | 43 min |
| Aug 19, 5:33 PM EDT | Special Weather Statement | AKQ | Isle of Wight | 42 min |
| Aug 19, 5:37 PM EDT | Severe Thunderstorm Warning | AKQ | Southampton | 38 min |
| Aug 19, 5:49 PM EDT | Areal Flood Advisory | AKQ | Brunswick | 116 min |
| Aug 19, 6:14 PM EDT | Special Weather Statement | AKQ | City of Franklin, City of Suffolk | 46 min |
| Aug 19, 6:04 PM EDT | Special Weather Statement | AKQ | Northampton | 41 min |
| Aug 19, 6:45 PM EDT | Special Weather Statement | AKQ | Hertford | 60 min |
| Aug 19, 8:34 AM EDT | Special Weather Statement | AKQ | Worcester | 41 min |
| Aug 19, 9:45 AM EDT | Special Weather Statement | AKQ | Dorchester | 45 min |
| Aug 19, 10:15 AM EDT | Special Weather Statement | AKQ | Dorchester, Wicomico | 45 min |
| Aug 19, 10:59 AM EDT | Special Weather Statement | AKQ | Worcester | 46 min |
| Aug 19, 11:18 AM EDT | Special Weather Statement | AKQ | Worcester | 42 min |
| Aug 19, 5:22 PM EDT | Special Weather Statement | AKQ | Worcester | 38 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.