Alert archive / Virginia / Mesoscale Discussions in 2025
Mesoscale Discussion 1049
The Storm Prediction Center issued this mesoscale discussion at May 30, 2025, 6:40 PM EDT for 5 counties in Maryland; 15 counties in Virginia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 30, 2025, 6:40 PM EDT (22:40 UTC)
- Expired
- May 30, 2025, 8:45 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 350
Counties Anne Arundel County, MD, City of Baltimore, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Manassas, VA, City of Manassas Park, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Loudoun County, VA, Madison County, VA, Prince William County, VA, Rappahannock County, VA, Stafford County, VA, Warren County, VA
The radar
The Sterling radar (KLWX), 12 km from the middle of the area, began a volume at 22:41 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 12:00Z, 10.7 hours before the alert went out and 15 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
- 935 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 1:37 PM EDT | Tornado Watch | SPC | Allegany, Garrett | 6 hr |
| May 30, 3:49 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 116 min |
| May 30, 5:01 PM EDT | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more | 7 hr |
| May 30, 1:06 PM EDT | Mesoscale Discussion | SPC | Albemarle, Alleghany, Amherst, Appomattox, Augusta, Bath and 52 more | 114 min |
| May 30, 4:29 PM EDT | Mesoscale Discussion | SPC | Amherst, Appomattox, Bedford, Buckingham, Campbell, Charlotte and 10 more | 91 min |
| May 30, 7:21 PM EDT | Mesoscale Discussion | SPC | Charles City, Dinwiddie, Essex, Gloucester, Henrico, Isle of Wight and 21 more | 84 min |
Nearby
Mesoscale Discussions in Virginia, 2025Mesoscale Discussions in Maryland, 2025Every mesoscale discussion in 2025
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.