Alert archive / Georgia / Mesoscale Discussions in 2003

Mesoscale Discussion 124

February 22, 20034 counties in Alabama; 10 counties in Florida; 85 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Feb 22, 2003, 5:19 AM CST for 4 counties in Alabama; 10 counties in Florida; 85 counties in Georgia. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued
Feb 22, 2003, 5:19 AM CST (11:19 UTC)
Expired
Feb 22, 2003, 6:15 AM CST
In force
56 min
Issued by
the Storm Prediction Center
All 99 counties

Barbour County, AL, Henry County, AL, Houston County, AL, Russell County, AL, Bay County, FL, Calhoun County, FL, Gadsden County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Wakulla County, FL, Washington County, FL, Atkinson County, GA, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brooks County, GA, Butts County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Clayton County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Fayette County, GA, Glascock County, GA, Grady County, GA, Greene County, GA, Hancock County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Irwin County, GA, Jasper County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Lowndes County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam County, GA, Quitman County, GA, Randolph County, GA, Rockdale County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Treutlen County, GA, Troup County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA

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, 11.3 hours before the alert went out and 172 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 2003-02-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2003-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
565 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

960 
ACUS11 KWNS 221120
SWOMCD
SPC MCD 221119 
FLZ000-GAZ000-ALZ000-221215-

MESOSCALE DISCUSSION 0124
NWS STORM PREDICTION CENTER NORMAN OK
0519 AM CST SAT FEB 22 2003

AREAS AFFECTED...CENTRAL AND ERN FL PANHANDLE / WRN TWO-THIRDS OF
GA / SERN AL...

CONCERNING...SEVERE THUNDERSTORM WATCH 15...17...

VALID 221119Z - 221215Z

AXIS OF STRONGEST CONVECTION CONTINUES MOVING OUT OF WW 16 AND
ACROSS WW 15 AND 17.  ALL THREE OF THESE WATCHES EXPIRE AT
22/12Z...AND A NEW TORNADO WATCH WILL BE ISSUED SHORTLY AHEAD OF
ONGOING STORMS.



MOIST LOW-LEVEL AIRMASS IS OBSERVED ACROSS NRN FL AND SRN
GA...WHICH CONTINUES TO SPREAD NWD INTO CENTRAL AND NRN GA ON SLY
FLOW AHEAD OF MAIN CONVECTIVE AXIS.  OBJECTIVE ANALYSES AND MODEL
FORECASTS SUGGEST ONLY MARGINAL INSTABILITY ACROSS THIS
AREA...AND AREA IS BECOMING INCREASINGLY REMOVED FROM STRONGER
UPPER FORCING ASSOCIATED WITH SHORT WAVE TROUGH NOW CENTERED OVER
SERN AR.  HOWEVER...DEEP- LAYER WIND FIELD REMAINS QUITE STRONG /
SUPPORTIVE OF A CONTINUED SEVERE THREAT EAST OF ONGOING
CONVECTION.	 

..GOSS.. 02/22/2003

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

33968360 33668259 33158235 31128289 29938336 30108420
29698501 30238581 33458514

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 21, 7:26 PM CSTMesoscale DiscussionSPCBaldwin, Clarke, Mobile, Washington2 hr
Feb 21, 8:15 PM CSTTornado WatchSPCBaldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 4 more6 hr
Feb 21, 9:03 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Chilton, Choctaw, Coosa and 22 more3 hr
Feb 21, 9:30 PM CSTSevere Thunderstorm WatchSPCAutauga, Bibb, Calhoun, Chilton, Choctaw, Clay and 20 more7 hr
Feb 21, 10:22 PM CSTMesoscale DiscussionSPCBaldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 4 more113 min
Feb 21, 10:40 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Calhoun, Chilton, Choctaw, Clay and 20 more2 hr
Feb 21, 11:14 PM CSTMesoscale DiscussionSPCBlount, Calhoun, Cherokee, Cleburne, Cullman, DeKalb and 16 more4 hr
Feb 21, 11:40 PM CSTTornado WatchSPCBarbour, Bullock, Coffee, Dale, Geneva, Henry and 5 more6 hr
Feb 22, 12:35 AM CSTTornado WatchSPCAutauga, Baldwin, Bibb, Bullock, Butler, Calhoun and 37 more5 hr
Feb 22, 2:47 AM CSTMesoscale DiscussionSPCCalhoun, Cherokee, Cleburne, DeKalb, Etowah, Jackson and 4 more3 hr
Feb 22, 3:35 AM CSTTornado WatchSPCBlount, Calhoun, Chambers, Cherokee, Chilton, Clay and 12 more2 hr
Feb 22, 3:51 AM CSTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 43 more114 min
Feb 22, 5:50 AM CSTTornado WatchSPCHenry, Houston5 hr
Feb 22, 9:14 AM CSTMesoscale DiscussionSPCDeKalb, Jackson, Marshall2 hr
Feb 22, 10:35 AM CSTTornado WatchSPCDeKalb, Jackson5 hr
Feb 21, 6:18 PM CSTMesoscale DiscussionSPCBaker, Bradford, Clay, Columbia, Duval, Hamilton and 7 more3 hr
Feb 22, 9:59 AM CSTMesoscale DiscussionSPCBaker, Duval, Nassau61 min
Feb 22, 10:55 AM CSTTornado WatchSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 6 more5 hr
Feb 22, 11:55 AM CSTMesoscale DiscussionSPCBrevard, Charlotte, DeSoto, Glades, Hardee, Highlands and 11 more3 hr
Feb 22, 12:33 PM CSTMesoscale DiscussionSPCBrevard, Charlotte, DeSoto, Dixie, Glades, Hardee and 13 more117 min
Feb 22, 12:49 PM CSTMesoscale DiscussionSPCAlachua, Bradford, Clay, Duval, Nassau, Putnam and 1 more116 min
Feb 22, 2:48 PM CSTMesoscale DiscussionSPCBrevard, Charlotte, DeSoto, Flagler, Hardee, Highlands and 14 more27 min
Feb 22, 2:31 PM CSTMesoscale DiscussionSPCCatoosa, Murray, Walker, Whitfield119 min

Nearby

Mesoscale Discussions in Georgia, 2003Mesoscale Discussions in Florida, 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.