Alert archive / South Carolina / Mesoscale Discussions in 2019
Mesoscale Discussion 971
The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2019, 12:43 PM EDT for 8 counties in Georgia; 14 counties in South Carolina. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jun 4, 2019, 12:43 PM EDT (16:43 UTC)
- Expired
- Jun 4, 2019, 2:15 PM EDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 22 counties
Bulloch County, GA, Burke County, GA, Candler County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Jenkins County, GA, Screven County, GA, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Dorchester County, SC, Georgetown County, SC, Hampton County, SC, Jasper County, SC, Orangeburg County, SC, Williamsburg County, SC
The radar
The Charleston,SC radar (KCLX), 35 km from the middle of the area, began a volume at 16:44 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
Charleston AFB, SC (KCHS), launched 12:00Z, 4.7 hours before the alert went out and 80 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
- 700 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 894 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.5
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 |
|---|---|---|---|---|
| Jun 4, 1:18 PM EDT | Severe Thunderstorm Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Effingham and 11 more | 7 hr |
| Jun 4, 4:15 PM EDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Candler, Chatham, Effingham, Evans and 4 more | 90 min |
Nearby
Mesoscale Discussions in South Carolina, 2019Mesoscale Discussions in Georgia, 2019Every mesoscale discussion in 2019
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.