Alert archive / Georgia / Mesoscale Discussions in 2011
Mesoscale Discussion 280
The Storm Prediction Center issued this mesoscale discussion at Mar 26, 2011, 3:38 PM EDT for 17 counties in Georgia; Colleton County, Hampton County, Jasper County, South Carolina. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Mar 26, 2011, 3:38 PM EDT (19:38 UTC)
- Expired
- Mar 26, 2011, 5:15 PM EDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
Counties Appling County, GA, Bacon County, GA, Bryan County, GA, Bulloch County, GA, Candler County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Jeff Davis County, GA, Jenkins County, GA, Long County, GA, Montgomery County, GA, Screven County, GA, Tattnall County, GA, Toombs County, GA, Wayne County, GA, Wheeler County, GA, Colleton County, SC, Hampton County, SC, Jasper County, SC
The radar
The Charleston,SC radar (KCLX), 75 km from the middle of the area, began a volume at 19:38 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
Charleston AFB, SC (KCHS), launched 12:00Z, 7.6 hours before the alert went out and 175 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
- 1585 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
967
ACUS11 KWNS 261938
SWOMCD
SPC MCD 261938
SCZ000-GAZ000-262115-
MESOSCALE DISCUSSION 0280
NWS STORM PREDICTION CENTER NORMAN OK
0238 PM CDT SAT MAR 26 2011
AREAS AFFECTED...SRN SC COASTAL PLAINS...ECNTRL/SERN GA
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 261938Z - 262115Z
THUNDERSTORMS...LARGELY WHICH ARE LEFT-SPLITS FROM SWRN GA
SUPERCELLS...CONTINUE TO ADVANCE ENE TOWARD THE LOWER SAVANNAH RIVER
VALLEY. A SMALL DOWNSTREAM WARM SECTOR HAS CONTINUED TO DESTABILIZE
OVER THE COASTAL SRN SC COUNTIES INTO SERN GA AHEAD OF THE STORMS
WHERE MLCAPES UP TO 1000 J/KG EXIST. IT IS POSSIBLE FOR STRONG
STORMS /PERHAPS AN ISOLATED SUPERCELL/ TO CONTINUE ACROSS THIS
REGION FOR THE NEXT SEVERAL HOURS AS DEEP LAYER FLOW INCREASES.
SHORT TEMPORAL/AREAL EXTENTS WILL LIKELY PRECLUDE A WEATHER WATCH
ISSUANCE...BUT A COUPLE OF STORMS MAY PRODUCE LARGE HAIL OR DAMAGING
WIND GUSTS...PARTICULARLY ALONG/S OF THE SWD ADVANCING WEDGE FRONT.
..RACY.. 03/26/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...CHS...CAE...JAX...FFC...
LAT...LON 32558247 32888210 32848127 33008072 32708042 32398092
31888145 31468186 31368266 32008282 32558247SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 26, 12:25 PM EDT | Mesoscale Discussion | SPC | Heard | 95 min |
| Mar 26, 12:33 PM EDT | Mesoscale Discussion | SPC | Atkinson, Bacon, Baker, Ben Hill, Berrien, Brooks and 18 more | 57 min |
| Mar 26, 1:15 PM EDT | Tornado Watch | SPC | Baker, Baldwin, Ben Hill, Berrien, Bibb, Bleckley and 74 more | 8 hr |
| Mar 26, 3:23 PM EDT | Mesoscale Discussion | SPC | Atkinson, Bacon, Baker, Baldwin, Ben Hill, Berrien and 79 more | 97 min |
| Mar 26, 7:40 PM EDT | Tornado Watch | SPC | Bryan, Bulloch, Candler, Chatham, Effingham, Evans and 3 more | 4 hr |
| Mar 26, 7:59 PM EDT | Mesoscale Discussion | SPC | Baker, Baldwin, Ben Hill, Berrien, Bibb, Bleckley and 75 more | 91 min |
Nearby
Mesoscale Discussions in Georgia, 2011Mesoscale Discussions in South Carolina, 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.