Alert archive / Georgia / Mesoscale Discussions in 2003

Mesoscale Discussion 192

March 5, 200340 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Mar 5, 2003, 8:57 PM EST for 40 counties in Georgia. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
Mar 5, 2003, 8:57 PM EST (01:57 UTC)
Expired
Mar 5, 2003, 10:00 PM EST
In force
63 min
Issued by
the Storm Prediction Center
All 40 counties

Baldwin County, GA, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, DeKalb County, GA, Douglas County, GA, Fayette County, GA, Forsyth County, GA, Fulton County, GA, Greene County, GA, Gwinnett County, GA, Hancock County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Madison County, GA, Meriwether County, GA, Monroe County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Pike County, GA, Putnam County, GA, Rockdale County, GA, Spalding County, GA, Taliaferro County, GA, Troup County, GA, Upson County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 58 km from the middle of the area, began a volume at 02:00 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 00:00Z, 2.0 hours before the alert went out and 52 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.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2003-03-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 68 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2003-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
68 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
717 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

247 
ACUS11 KWNS 060157
SWOMCD
SPC MCD 060157 
GAZ000-060300-

MESOSCALE DISCUSSION 0192
NWS STORM PREDICTION CENTER NORMAN OK
0757 PM CST WED MAR 05 2003

AREAS AFFECTED...GA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL...HEAVY RAINFALL 

VALID 060157Z - 060300Z

MARGINALLY ISOLATED SEVERE HAIL POSSIBLE THIS EVENING. STORMS IN
AL APPEAR TO BE ORGANIZING.  THUS...INCREASED WIND THREAT SUGGEST
WW MAY BE NEEDED SOON ACROSS CENTRAL GA.



WARM FRONT EXTENDS FROM NORTH OF MGM IN SRN AL EWD TO NORTH OF
MCN IN SRN GA. STORMS ARE LOCATED IN THE WARM ADVECTION AREA
NORTH OF THE WARM FRONT WITH THE ATL EVENING SOUNDING SHOW
UPDRAFT ROOTS AROUND 800 MB. SPEED SHEAR IS STRONG FROM 800MB TO
300 MB AND AIDING IN STORM ORGANIZATION.



VAD WIND PROFILES INDICATE THAT A MID/HIGH SHORTWAVE TROUGH IS
MOVING ENEWD THROUGH THE UPPER FLOW AND WAS LOCATED NEAR THE
MS/AL BORDER. STORMS HAVE STRENGTHENED RECENTLY IN CENTRAL AL.
ATL EVENING SOUNDING SHOWED AROUND 1000 J/KG AND IF STORMS IN
CENTRAL AL CAN REMAIN ORIENTED NEAR THE WARM FRONT...WIND THREAT
WOULD BE SUFFICIENT FOR A WW ACROSS PORTIONS OF GA.



ISOLATED HEAVY RAINFALL IS ALSO POSSIBLE ACROSS NRN GA IN AREA OF
STRONG LIFT WHERE 50-60 KT 850 MB WINDS ARE FORECAST TO ADVECT
10C DEWPOINTS NEWD ACROSS THE AREA DURING THE NEXT FEW HOURS.



..IMY.. 03/06/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

33688529 34268488 34308386 34278332 33998291 33618265
32988301 32778407 32908515

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 5, 9:10 PM ESTSevere Thunderstorm WatchSPCBaldwin, Bibb, Butts, Carroll, Chattahoochee, Clarke and 40 more4 hr
Mar 5, 10:28 PM ESTMesoscale DiscussionSPCBibb, Butts, Clayton, Crawford, DeKalb, Fayette and 19 more62 min
Mar 5, 10:49 PM ESTMesoscale DiscussionSPCChattooga, Floyd, Gordon, Murray, Walker, Whitfield116 min
Mar 5, 10:52 PM ESTMesoscale DiscussionSPCBurke, Columbia, Emanuel, Glascock, Jefferson, Jenkins and 7 more53 min
Mar 5, 11:35 PM ESTSevere Thunderstorm WatchSPCBaldwin, Barrow, Bibb, Burke, Butts, Clarke and 36 more5 hr
Mar 6, 12:45 AM ESTMesoscale DiscussionSPCBurke, Columbia, Glascock, Jefferson, Lincoln, McDuffie and 4 more60 min
Mar 6, 3:16 AM ESTMesoscale DiscussionSPCBaldwin, Barrow, Bibb, Burke, Butts, Clarke and 36 more59 min
Mar 6, 4:30 AM ESTMesoscale DiscussionSPCTroup90 min
Mar 6, 6:39 AM ESTMesoscale DiscussionSPCChattahoochee, Clay, Crawford, Harris, Lee, Macon and 12 more96 min
Mar 6, 8:37 AM ESTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Butts, Chattahoochee, Crawford and 32 more83 min
Mar 6, 12:58 PM ESTMesoscale DiscussionSPCAtkinson, Bacon, Berrien, Brantley, Brooks, Camden and 15 more2 hr

Nearby

Mesoscale Discussions in Georgia, 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.