Alert archive / Georgia / Mesoscale Discussions in 2003
Mesoscale Discussion 293
The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2003, 3:52 PM CST for 5 counties in Alabama; 9 counties in Georgia. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2003, 3:52 PM CST (21:52 UTC)
- Expired
- Mar 19, 2003, 5:45 PM CST
- In force
- 113 min
- Issued by
- the Storm Prediction Center
Counties Calhoun County, AL, Cherokee County, AL, Cleburne County, AL, DeKalb County, AL, Etowah County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Floyd County, GA, Gordon County, GA, Haralson County, GA, Polk County, GA, Walker County, GA, Whitfield County, GA
The radar
The Northeast Alabama radar (KHTX), 105 km from the middle of the area, began a volume at 21:53 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.9 hours before the alert went out and 124 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
- 21 J/kg
- Mixed-layer CIN
- -267 J/kg
- Mixed-layer LCL
- 479 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 417 m²/s²
- 0-3 km storm-relative helicity
- 730 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
156 ACUS11 KWNS 192152 SWOMCD SPC MCD 192152 GAZ000-TNZ000-ALZ000-192345- MESOSCALE DISCUSSION 0293 NWS STORM PREDICTION CENTER NORMAN OK 0352 PM CST WED MAR 19 2003 AREAS AFFECTED...ERN KY...ERN TN...NW GA...NE AL CONCERNING...TORNADO WATCH 57... VALID 192152Z - 192345Z SCATTERED STRONG/SEVERE STORMS LIKELY WILL CONTINUE ANOTHER COUPLE OF HOURS ACROSS EASTERN KENTUCKY/TENNESSEE...BUT ENVIRONMENT APPEARS TO BE SLOWLY STABILIZING AND A GRADUAL WEAKENING TREND IS EXPECTED TO CONTINUE. MOST INTENSE STORMS THROUGH 20/00Z ARE LIKELY TO REMAIN FOCUSED IN LOW-LEVEL BAROCLINIC ZONE CURVING FROM NEAR ANNISTON AL INTO AREAS NEAR/EAST OF CHATTANOOGA TN...WHERE INFLOW/LIFT OF MORE FAVORABLE MOISTURE /REFLECTED BY LOW TO MID 60S SURFACE DEW POINTS/ WILL PERSIST. VERTICAL SHEAR PROFILES REMAIN MAXIMIZED ACROSS THIS REGION NEAR MID/UPPER JET AXIS...WITH HODOGRAPHS SUPPORTIVE OF SUPERCELLS AND ISOLATED TORNADOES. ..KERR.. 03/19/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MRX...FFC...BMX... 33418598 34008611 34648585 34848565 35048500 34568471 34238490 33568520 33478561
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 6:39 PM CST | Mesoscale Discussion | SPC | Butler, Choctaw, Clarke, Coffee, Conecuh, Covington and 13 more | 3 hr |
| Mar 18, 7:30 PM CST | Tornado Watch | SPC | Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 5 more | 6 hr |
| Mar 18, 9:10 PM CST | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Choctaw, Clarke, Conecuh and 14 more | 3 hr |
| Mar 18, 10:25 PM CST | Tornado Watch | SPC | Baldwin, Bibb, Choctaw, Clarke, Colbert, Cullman and 24 more | 7 hr |
| Mar 18, 11:50 PM CST | Mesoscale Discussion | SPC | Bibb, Choctaw, Clarke, Colbert, Cullman, Fayette and 18 more | 115 min |
| Mar 19, 2:02 AM CST | Mesoscale Discussion | SPC | Bibb, Choctaw, Clarke, Colbert, Cullman, Dallas and 22 more | 118 min |
| Mar 19, 7:10 AM CST | Mesoscale Discussion | SPC | Madison | 2 hr |
| Mar 19, 8:00 AM CST | Tornado Watch | SPC | DeKalb, Jackson, Madison, Marshall, Morgan | 4 hr |
| Mar 19, 9:28 AM CST | Mesoscale Discussion | SPC | Blount, DeKalb, Jackson, Madison, Marshall | 2 hr |
| Mar 19, 11:30 AM CST | Tornado Watch | SPC | DeKalb, Jackson, Marshall | 7 hr |
| Mar 19, 11:58 AM CST | Mesoscale Discussion | SPC | DeKalb, Etowah, Jackson, Marshall | 2 hr |
| Mar 19, 12:59 PM CST | Mesoscale Discussion | SPC | Barbour, Bullock, Dale, Henry, Houston, Lee and 4 more | 3 hr |
| Mar 19, 1:30 PM CST | Tornado Watch | SPC | Autauga, Barbour, Bullock, Butler, Calhoun, Chambers and 15 more | 6 hr |
| Mar 19, 2:06 PM CST | Mesoscale Discussion | SPC | Calhoun, Cherokee, DeKalb, Etowah, Jackson, Marshall and 1 more | 114 min |
| Mar 19, 3:35 PM CST | Mesoscale Discussion | SPC | Barbour, Chambers, Lee, Macon, Randolph, Russell and 1 more | 115 min |
| Mar 18, 11:53 PM CST | Mesoscale Discussion | SPC | Atkinson, Baker, Ben Hill, Berrien, Brooks, Calhoun and 27 more | 3 hr |
| Mar 19, 9:48 AM CST | Mesoscale Discussion | SPC | Baldwin, Banks, Barrow, Burke, Butts, Clarke and 40 more | 117 min |
| Mar 19, 4:30 PM CST | Severe Thunderstorm Watch | SPC | Banks, Barrow, Bartow, Cherokee, Clarke, Dawson and 20 more | 6 hr |
| Mar 19, 4:50 PM CST | Tornado Watch | SPC | Baldwin, Ben Hill, Bibb, Bleckley, Butts, Calhoun and 71 more | 5 hr |
| Mar 19, 5:32 PM CST | Mesoscale Discussion | SPC | Camden, Charlton | 118 min |
Nearby
Mesoscale Discussions in Georgia, 2003Mesoscale Discussions in Alabama, 2003Every mesoscale discussion in 2003
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.