Alert archive / Georgia / Mesoscale Discussions in 2007
Mesoscale Discussion 21
The Storm Prediction Center issued this mesoscale discussion at Jan 5, 2007, 4:26 PM EST for 19 counties in Georgia; 8 counties in South Carolina. It was in force for 34 min.
The area
The outline as issued.
The facts
- Issued
- Jan 5, 2007, 4:26 PM EST (21:26 UTC)
- Expired
- Jan 5, 2007, 5:00 PM EST
- In force
- 34 min
- Issued by
- the Storm Prediction Center
All 27 counties
Appling County, GA, Bryan County, GA, Bulloch County, GA, Candler County, GA, Chatham County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Jenkins County, GA, Johnson County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Montgomery County, GA, Screven County, GA, Tattnall County, GA, Toombs County, GA, Treutlen County, GA, Wheeler County, GA, Allendale County, SC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC
The radar
The Charleston,SC radar (KCLX), 25 km from the middle of the area, began a volume at 21:29 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, 9.4 hours before the alert went out and 122 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
- 557 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 470 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 052127 SWOMCD SPC MCD 052126 SCZ000-GAZ000-052200- MESOSCALE DISCUSSION 0021 NWS STORM PREDICTION CENTER NORMAN OK 0326 PM CST FRI JAN 05 2007 AREAS AFFECTED...PORTIONS OF SC AND SERN GA CONCERNING...TORNADO WATCH VALID 052126Z - 052200Z A TORNADO WATCH IS BEING COORDINATED FOR PORTIONS OF SERN GA AND COASTAL PLAINS OF SC. ..IMY.. 01/05/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...ILM...CHS...CAE...JAX...FFC... 31868276 32778288 33278040 33387969 33117943 32248054 31418125
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 5, 1:47 AM EST | Mesoscale Discussion | SPC | Clay, Heard, Quitman | 28 min |
| Jan 5, 4:13 AM EST | Mesoscale Discussion | SPC | Clay, Early, Quitman, Seminole | 62 min |
| Jan 5, 6:46 AM EST | Mesoscale Discussion | SPC | Baker, Baldwin, Banks, Barrow, Bartow, Ben Hill and 88 more | 59 min |
| Jan 5, 8:21 AM EST | Tornado Watch | SPC | Baker, Baldwin, Barrow, Ben Hill, Bibb, Bleckley and 83 more | 8 hr |
| Jan 5, 10:02 AM EST | Mesoscale Discussion | SPC | Baker, Baldwin, Ben Hill, Bibb, Bleckley, Brooks and 82 more | 118 min |
| Jan 5, 12:06 PM EST | Mesoscale Discussion | SPC | Banks, Elbert, Forsyth, Franklin, Habersham, Hall and 6 more | |
| Jan 5, 12:31 PM EST | Mesoscale Discussion | SPC | Baker, Baldwin, Barrow, Ben Hill, Bibb, Bleckley and 56 more | 119 min |
| Jan 5, 12:41 PM EST | Tornado Watch | SPC | Burke, Columbia, Elbert, Franklin, Habersham, Hart and 5 more | 8 hr |
| Jan 5, 2:16 PM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Bleckley and 56 more | 119 min |
| Jan 5, 2:49 PM EST | Tornado Watch | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 13 more | 7 hr |
| Jan 5, 3:04 PM EST | Mesoscale Discussion | SPC | Burke, Columbia, Glascock, Jefferson, Lincoln, McDuffie and 3 more | 86 min |
| Jan 5, 4:35 PM EST | Tornado Watch | SPC | Bryan, Bulloch, Candler, Chatham, Effingham, Emanuel and 11 more | 7 hr |
| Jan 5, 6:35 PM EST | Mesoscale Discussion | SPC | Brantley, Bryan, Bulloch, Camden, Charlton, Chatham and 11 more | 85 min |
| Jan 5, 4:20 PM EST | Mesoscale Discussion | SPC | Marlboro | 85 min |
| Jan 5, 5:53 PM EST | Tornado Watch | SPC | Darlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more | 7 hr |
Nearby
Mesoscale Discussions in Georgia, 2007Mesoscale Discussions in South Carolina, 2007Every mesoscale discussion in 2007
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.