Alert archive / Georgia / Mesoscale Discussions in 2012
Mesoscale Discussion 1075
The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2012, 3:50 PM CDT for Geneva County, Houston County, Alabama; 16 counties in Florida; 51 counties in Georgia. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Jun 5, 2012, 3:50 PM CDT (20:50 UTC)
- Expired
- Jun 5, 2012, 5:15 PM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 69 counties
Geneva County, AL, Houston County, AL, Baker County, FL, Columbia County, FL, Duval County, FL, Gadsden County, FL, Hamilton County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Madison County, FL, Nassau County, FL, Okaloosa County, FL, Santa Rosa County, FL, Suwannee County, FL, Union County, FL, Washington County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Calhoun County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Emanuel County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Pierce County, GA, Seminole County, GA, Tattnall County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Wilcox County, GA, Worth County, GA
The radar
The Tallahassee radar (KTLH), 89 km from the middle of the area, began a volume at 20:53 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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.8 hours before the alert went out and 88 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
- 1108 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 885 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
820
ACUS11 KWNS 052050
SWOMCD
SPC MCD 052050
GAZ000-FLZ000-ALZ000-052215-
MESOSCALE DISCUSSION 1075
NWS STORM PREDICTION CENTER NORMAN OK
0350 PM CDT TUE JUN 05 2012
AREAS AFFECTED...SOUTHERN GA/FAR NORTH FL
CONCERNING...SEVERE THUNDERSTORM WATCH 358...
VALID 052050Z - 052215Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 358
CONTINUES.
SUMMARY...DAMAGING WINDS/SEVERE HAIL REMAIN POSSIBLE ACROSS
SOUTH/SOUTHEAST GA AND FAR NORTH FL/FL PANHANDLE INTO EARLY
EVENING...SEVERE TSTM WATCH 358 CONTINUES.
DISCUSSION...ACROSS SOUTH-CENTRAL/SOUTHEAST GA...OUTFLOW-REINFORCED
EFFECTIVE FRONT CONTINUES TO PUSH SOUTHWARD/UNDERCUT STORMS ACROSS
THE REGION...BUT A WELL-ORGANIZED 50 MILE EXTENSIVE NORTH-SOUTH
CONVECTIVE LINE CONTINUES TO STEADILY PROGRESS EASTWARD/SLOWLY
ACCELERATE IN AREAS ALONG/SOUTH OF THE I-16 CORRIDOR INCLUDING
VIDALIA AS OF 2045Z. NEAREST THE EFFECTIVE BOUNDARY...AT LEAST SOME
SEVERE WIND/HAIL POTENTIAL WILL REMAIN WITH THE SOUTHERNMOST PORTION
OF THE LINE ACROSS SOUTHEAST GA OVER THE NEXT HOUR OR TWO.
FARTHER SOUTH...AN INCREASE IN SCATTERED STRONG/SEVERE TSTMS HAS
ALSO OCCURRED ACROSS THE FL PANHANDLE/FAR SOUTHWEST GA. THIS IS
OCCURRING PRIMARILY IN VICINITY OF THE SEA BREEZE...AND A WEAK
SURFACE TROUGH THAT INTERCEPTS IT NEAR THE AL/FL PANHANDLE BORDER
REGION. ENVIRONMENT WILL REMAIN FAVORABLE FOR LOCALIZED
DOWNBURSTS/PULSE-TYPE SEVERE HAIL WILL REMAIN POSSIBLE INTO EARLY
EVENING.
..GUYER.. 06/05/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...CHS...JAX...FFC...TAE...MOB...
LAT...LON 30588715 30868742 31168583 31478497 31878455 32018372
31978277 32728242 32658196 31828116 30028130 29988229
30238406 30538514 30618589 30588715SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 10:42 AM CDT | Mesoscale Discussion | SPC | Barbour, Dale, Geneva, Henry, Houston, Lee and 1 more | 2 hr |
| Jun 5, 11:24 AM CDT | Severe Thunderstorm Watch | SPC | Geneva, Henry, Houston | 9 hr |
| Jun 5, 2:34 PM CDT | Mesoscale Discussion | SPC | Houston | 86 min |
| Jun 5, 6:26 PM CDT | Mesoscale Discussion | SPC | Geneva, Henry, Houston | 94 min |
Nearby
Mesoscale Discussions in Georgia, 2012Mesoscale Discussions in Florida, 2012Mesoscale Discussions in Alabama, 2012Every mesoscale discussion in 2012
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.