Alert archive / Maryland / Mesoscale Discussions in 2011
Mesoscale Discussion 2068
The Storm Prediction Center issued this mesoscale discussion at Aug 27, 2011, 4:44 PM EDT for Sussex County, Delaware; Somerset County, Wicomico County, Worcester County, Maryland; Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 27, 2011, 4:44 PM EDT (20:44 UTC)
- Expired
- Aug 27, 2011, 6:45 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
Counties Sussex County, DE, Somerset County, MD, Wicomico County, MD, Worcester County, MD, Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 31 km from the middle of the area, began a volume at 20:45 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.7 hours before the alert went out and 105 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
- 330 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 691 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 221 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 7:52 AM EDT | Mesoscale Discussion | SPC | Sussex | 113 min |
| Aug 27, 10:31 AM EDT | Mesoscale Discussion | SPC | Sussex | 29 min |
| Aug 27, 10:41 AM EDT | Tornado Watch | SPC | Kent, New Castle, Sussex | 9 hr |
| Aug 27, 1:01 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 119 min |
| Aug 27, 7:31 PM EDT | Mesoscale Discussion | SPC | New Castle | 89 min |
| Aug 27, 7:56 PM EDT | Tornado Watch | SPC | Kent, New Castle, Sussex | 9 hr |
| Aug 27, 12:32 AM EDT | Tornado Watch | SPC | Somerset, Wicomico, Worcester | 10 hr |
| Aug 27, 3:06 AM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 114 min |
Nearby
Mesoscale Discussions in Maryland, 2011Mesoscale Discussions in New Jersey, 2011Mesoscale Discussions in Delaware, 2011Every mesoscale discussion in 2011
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.