Alert archive / Tennessee / Mesoscale Discussions in 2003

Mesoscale Discussion 131

February 22, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Feb 22, 2003, 1:33 PM EST for 4 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
Feb 22, 2003, 1:33 PM EST (18:33 UTC)
Expired
Feb 22, 2003, 3:30 PM EST
In force
117 min
Issued by
the Storm Prediction Center
All 61 counties

Brevard County, FL, Charlotte County, FL, DeSoto County, FL, Dixie County, FL, Glades County, FL, Hardee County, FL, Highlands County, FL, Hillsborough County, FL, Indian River County, FL, Lake County, FL, Madison County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Polk County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL, Catoosa County, GA, Colquitt County, GA, Dade County, GA, Lee County, GA, Murray County, GA, Schley County, GA, Sumter County, GA, Walker County, GA, Whitfield County, GA, Clinton County, KY, Cumberland County, KY, McCreary County, KY, Wayne County, KY, Whitley County, KY, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Clay County, TN, Cumberland County, TN, Fentress County, TN, Hamilton County, TN, Jackson County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Union County, TN, Van Buren County, TN, White County, TN

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 6.6 hours before the alert went out and 192 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, Tallahassee Rgnl, FL at 12:00Z on 2003-02-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1168 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2003-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 307 square meters per square second.1939587897Sfc1 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
1168 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
462 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
307 m²/s²
0-3 km storm-relative helicity
314 m²/s²
Significant tornado parameter
1.8
Supercell composite
11.1

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 21, 7:18 PM ESTMesoscale DiscussionSPCBaker, Bradford, Clay, Columbia, Duval, Hamilton and 7 more3 hr
Feb 21, 8:26 PM ESTMesoscale DiscussionSPCEscambia2 hr
Feb 21, 9:15 PM ESTTornado WatchSPCEscambia, Okaloosa, Santa Rosa6 hr
Feb 21, 11:22 PM ESTMesoscale DiscussionSPCEscambia, Okaloosa, Santa Rosa113 min
Feb 22, 12:40 AM ESTTornado WatchSPCBay, Calhoun, Gadsden, Gulf, Holmes, Jackson and 3 more6 hr
Feb 22, 1:35 AM ESTTornado WatchSPCEscambia, Holmes, Okaloosa, Santa Rosa, Walton5 hr
Feb 22, 4:51 AM ESTMesoscale DiscussionSPCBay, Calhoun, Escambia, Gadsden, Gulf, Holmes and 6 more114 min
Feb 22, 6:19 AM ESTMesoscale DiscussionSPCBay, Calhoun, Gadsden, Jackson, Jefferson, Leon and 4 more56 min
Feb 22, 6:50 AM ESTTornado WatchSPCBay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 11 more5 hr
Feb 22, 10:59 AM ESTMesoscale DiscussionSPCBaker, Duval, Nassau61 min
Feb 22, 11:55 AM ESTTornado WatchSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 6 more5 hr
Feb 22, 12:55 PM ESTMesoscale DiscussionSPCBrevard, Charlotte, DeSoto, Glades, Hardee, Highlands and 11 more3 hr
Feb 22, 1:49 PM ESTMesoscale DiscussionSPCAlachua, Bradford, Clay, Duval, Nassau, Putnam and 1 more116 min
Feb 22, 3:48 PM ESTMesoscale DiscussionSPCBrevard, Charlotte, DeSoto, Flagler, Hardee, Highlands and 14 more27 min
Feb 22, 12:14 AM ESTMesoscale DiscussionSPCBartow, Catoosa, Chattooga, Dade, Fannin, Floyd and 7 more4 hr
Feb 22, 3:47 AM ESTMesoscale DiscussionSPCBanks, Barrow, Bartow, Butts, Carroll, Catoosa and 44 more3 hr
Feb 22, 4:35 AM ESTTornado WatchSPCBarrow, Bartow, Butts, Carroll, Catoosa, Chattooga and 41 more2 hr
Feb 22, 10:14 AM ESTMesoscale DiscussionSPCCatoosa, Chattooga, Dade, Walker, Whitfield2 hr
Feb 22, 11:35 AM ESTTornado WatchSPCCatoosa, Chattooga, Dade, Dawson, Fannin, Gilmer and 5 more5 hr
Feb 22, 3:31 PM ESTMesoscale DiscussionSPCCatoosa, Murray, Walker, Whitfield119 min
Feb 22, 4:35 PM ESTSevere Thunderstorm WatchSPCBell, Boyd, Floyd, Harlan, Johnson, Knott and 7 more4 hr

Nearby

Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Florida, 2003Mesoscale 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.