Alert archive / West Virginia / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 73, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at May 15, 2018, 9:17 PM EDT for Grant County, Mineral County, West Virginia. It was in force for 30 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
- May 15, 2018, 9:17 PM EDT (01:17 UTC)
- Expired
- May 15, 2018, 9:47 PM EDT
- In force
- 30 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Grant County, WV, Mineral County, WV
The radar
The Sterling radar (KLWX), 140 km from the middle of the area, began a volume at 01:19 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
Pittsburgh, PA (KAGC), launched 00:00Z, 1.3 hours before the alert went out and 155 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
- 186 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 1228 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 53 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 May 15, 8:57 PM EDT, 20 minutes earlier.
Area forecast discussion, May 15, 8:57 PM EDT, 20 minutes before
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Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 558 PM EDT Tue May 15 2018 ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-161000- Chesapeake Bay north of Pooles Island MD- Chesapeake Bay from Pooles Island to Sandy Point MD- Chesapeake Bay from Sandy Point to North Beach MD- Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- Tidal Potomac from Cobb Island MD to Smith Point VA- Patapsco River including Baltimore Harbor- Chester River to Queenstown MD-Eastern Bay- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island-District of Columbia-Southern Baltimore-Prince Georges- Anne Arundel-Charles-St. Marys-Calvert-Southeast Harford- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Stafford-Spotsylvania- King George- 558 PM EDT Tue May 15 2018 This Hazardous Weather Outlook is for the Maryland portion of the Chesapeake Bay, Tidal Potomac River, and adjacent counties in central Maryland and northern Virginia as well as the District of Columbia. .DAY ONE...Tonight A Severe Thunderstorm Watch is in effect for the Washington and Baltimore Metropolitan areas until 11 pm this evening. Thunderstorms will be capable of producing damaging wind gusts and large hail. A Flash Flood Watch is in effect for the Washington and Baltimore Metropolitan areas through late tonight. Heavy rainfall in a short period of time may cause creeks and streams to rapidly rise out of their banks. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Heavy rains Thursday night and Friday may result in small stream and urban flooding. .SPOTTER INFORMATION STATEMENT... Skywarn has been activated. Please relay and wind damage, large hail, or heavy rain reports to the National Weather Service. MDZ003>006-501>507-VAZ025>031-036>040-050-051-501>508-WVZ050>053- 055-501>506-161000- Washington-Frederick MD-Carroll-Northern Baltimore- Extreme Western Allegany-Central and Eastern Allegany- Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Augusta-Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke- Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper- Northern Fauquier-Southern Fauquier-Western Highland- Eastern Highland-Western Loudoun-Eastern Loudoun- Northern Virginia Blue Ridge-Central Virginia Blue Ridge- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant- Eastern Grant-Western Mineral-Eastern Mineral-Western Pendleton- Eastern Pendleton- 558 PM EDT Tue May 15 2018 This Hazardous Weather Outlook is for eastern West Virginia, northern and central Virginia, and central and western Maryland with the exception of Garrett County. .DAY ONE...Tonight A Severe Thunderstorm Watch is in effect for the Washington and Baltimore Metropolitan areas until 11 pm this evening. Thunderstorms will be capable of producing damaging wind gusts and large hail. A Flash Flood Watch is in effect for northern and western Maryland, portions of eastern West Virginia and northern Virginia through late tonight. Heavy rainfall in a short period of time may cause creeks and streams to rapidly rise out of their banks. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Scattered incidents of flooding are possible across southern Maryland Wednesday and Wednesday night. Heavy rains Thursday night and Friday may result in flooding of small streams and rivers. .SPOTTER INFORMATION STATEMENT... Skywarn has been activated. Please relay and wind damage, large hail, or heavy rain reports to the National Weather Service.
In the hours before
Local storm report, May 15, 8:19 PM EDT, 58 minutes before
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</html>Local storm report, May 15, 8:27 PM EDT, 50 minutes before
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</html>Local storm report, May 15, 8:29 PM EDT, 48 minutes before
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</html>Local storm report, May 15, 8:31 PM EDT, 46 minutes before
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</html>Local storm report, May 15, 9:11 PM EDT, 6 minutes before
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</html>Local storm report, May 15, 9:13 PM EDT, 4 minutes before
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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 |
|---|---|---|---|---|
| May 15, 8:16 PM EDT | Special Marine Warning | LWX | 96 min | |
| May 15, 8:34 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church | 41 min |
| May 15, 8:52 PM EDT | Areal Flood Warning | LWX | Loudoun | 3 hr |
| May 15, 8:52 PM EDT | Areal Flood Warning | LWX | Loudoun | 13 hr |
| May 15, 9:09 PM EDT | Areal Flood Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Falls Church | 111 min |
| May 15, 10:03 PM EDT | Special Marine Warning | LWX | 117 min | |
| May 15, 10:10 PM EDT | Areal Flood Warning | LWX | Clarke, Loudoun | 8 hr |
| May 15, 10:32 PM EDT | Areal Flood Warning | LWX | Loudoun | 11 hr |
| May 15, 11:05 PM EDT | Special Marine Warning | LWX | 85 min | |
| May 16, 6:05 AM EDT | Areal Flood Warning | LWX | Loudoun | 4 hr |
| May 16, 7:48 AM EDT | Coastal Flood Advisory | LWX | Arlington, City of Alexandria, City of Falls Church | 3 hr |
| May 16, 1:40 PM EDT | Flood Watch | LWX | Albemarle, Amherst, Arlington, Augusta, Clarke, Culpeper and 27 more | 3 days |
| May 16, 5:50 PM EDT | Special Marine Warning | LWX | 85 min | |
| May 15, 8:01 PM EDT | Areal Flood Warning | LWX | Baltimore, Carroll, Frederick, Harford | 5 hr |
| May 15, 8:20 PM EDT | Flash Flood Warning | LWX | Frederick, Washington | 3 hr |
| May 15, 8:25 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 2 more | 5 hr |
| May 15, 8:40 PM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| May 15, 9:19 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Howard, Prince George's, City of Baltimore | 9 hr |
| May 16, 4:41 PM EDT | Areal Flood Warning | LWX | Frederick | 18 hr |
| May 16, 6:38 PM EDT | Areal Flood Warning | LWX | Frederick, Washington | 16 hr |
Nearby
Severe Thunderstorm Warnings in West Virginia, 2018Every severe thunderstorm warning in 2018
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.