Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 19, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Feb 25, 2017, 4:00 PM EST for Saint Mary's County, Maryland. It was in force for 45 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
- Feb 25, 2017, 4:00 PM EST (21:00 UTC)
- Expired
- Feb 25, 2017, 4:45 PM EST
- In force
- 45 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Saint Mary's County, MD
The radar
The Dover AFB radar (KDOX), 116 km from the middle of the area, began a volume at 21:00 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 25, 1:30 PM EST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.0 hours before the alert went out and 104 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 960 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 83 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 Feb 25, 3:23 PM EST, 37 minutes earlier.
Area forecast discussion, Feb 25, 3:23 PM EST, 37 minutes before
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</html>Hazardous weather outlook, Feb 25, 1:42 PM EST, 2 hours 18 minutes before
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 142 PM EST Sat Feb 25 2017 ANZ530>543-DCZ001-MDZ011-013-014-016>018-508-VAZ052>057-261845- 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- 142 PM EST Sat Feb 25 2017 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...This Afternoon and Tonight A Severe Thunderstorm Watch has been issued until 8pm. A gale warning is in effect for all the waters from 10 AM EST today to 1 AM EST Sunday. .DAYS TWO THROUGH SEVEN...Sunday through Friday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotters should report any severe weather via standard operating procedures. MDZ003>006-501>507-VAZ025>031-036>040-050-051-501>508-WVZ050>053- 055-501>506-261845- 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- 142 PM EST Sat Feb 25 2017 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...This Afternoon and Tonight A Severe Thunderstorm Watch has been issued for all counties east of the Blue Ridge as well as the Martinsburg-Hagerstown area until 8pm. .DAYS TWO THROUGH SEVEN...Sunday through Friday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotters should report any severe weather via standard operating procedures. HTS
In the hours before
Local storm report, Feb 25, 3:35 PM EST, 25 minutes before
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</html>Local storm report, Feb 25, 3:41 PM EST, 19 minutes before
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</html>Local storm report, Feb 25, 3:44 PM EST, 16 minutes before
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</html>Local storm report, Feb 25, 3:47 PM EST, 13 minutes before
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</html>Local storm report, Feb 25, 3:51 PM EST, 9 minutes before
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</html>Local storm report, Feb 25, 3:58 PM EST, 2 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 |
|---|---|---|---|---|
| Feb 25, 1:09 PM EST | Severe Thunderstorm Warning | LWX | Albemarle, Greene, Nelson, City of Charlottesville | 36 min |
| Feb 25, 1:33 PM EST | Severe Thunderstorm Warning | LWX | Albemarle, Culpeper, Greene, Madison, Orange, Spotsylvania | 42 min |
| Feb 25, 2:02 PM EST | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Orange, Prince William, Spotsylvania, Stafford | 43 min |
| Feb 25, 2:12 PM EST | Severe Thunderstorm Warning | LWX | Loudoun | 10 min |
| Feb 25, 2:18 PM EST | Special Marine Warning | LWX | 87 min | |
| Feb 25, 2:27 PM EST | Severe Thunderstorm Warning | LWX | Culpeper, King George, Orange, Prince William, Spotsylvania, Stafford and 1 more | 48 min |
| Feb 25, 2:35 PM EST | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, Prince William, Stafford, City of Alexandria | 40 min |
| Feb 25, 2:38 PM EST | Special Marine Warning | LWX | 97 min | |
| Feb 25, 2:52 PM EST | Severe Thunderstorm Warning | LWX | Prince William, Stafford | 38 min |
| Feb 25, 3:08 PM EST | Special Marine Warning | LWX | 97 min | |
| Feb 25, 3:10 PM EST | Special Marine Warning | LWX | 95 min | |
| Feb 25, 3:16 PM EST | Special Marine Warning | LWX | 89 min | |
| Feb 25, 3:17 PM EST | Special Marine Warning | LWX | 28 min | |
| Feb 25, 3:41 PM EST | Special Marine Warning | LWX | 64 min | |
| Feb 25, 4:03 PM EST | Special Marine Warning | LWX | 87 min | |
| Feb 25, 4:23 PM EST | Special Marine Warning | LWX | 97 min | |
| Feb 25, 2:07 PM EST | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 38 min |
| Feb 25, 2:39 PM EST | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 29 min |
| Feb 25, 3:03 PM EST | Tornado Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 27 min |
| Feb 25, 3:24 PM EST | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 24 min |
| Feb 25, 3:29 PM EST | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 35 min |
| Feb 25, 3:39 PM EST | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 26 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2017Every severe thunderstorm warning in 2017
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.