Alert archive / Florida / Mesoscale Discussions in 2003

Mesoscale Discussion 248

March 14, 200312 counties in Alabama; 16 counties in Florida; 14 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Mar 14, 2003, 11:58 AM CST for 12 counties in Alabama; 16 counties in Florida; 14 counties in Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Mar 14, 2003, 11:58 AM CST (17:58 UTC)
Expired: Mar 14, 2003, 2:00 PM CST
In force: 2 hr
Issued by: the Storm Prediction Center

All 42 counties

Barbour County, AL, Butler County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Pike County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Okaloosa County, FL, Santa Rosa County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Calhoun County, GA, Clay County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Miller County, GA, Mitchell County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA, Terrell County, GA, Thomas County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 6.0 hours before the alert went out and 139 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 52 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 964 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 127 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.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 14, 4:05 PM CST	Severe Thunderstorm Watch	SPC	Baldwin, Barbour, Bullock, Butler, Coffee, Conecuh and 13 more	5 hr
Mar 13, 7:48 PM CST	Mesoscale Discussion	SPC	Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 5 more	57 min
Mar 14, 1:36 PM CST	Mesoscale Discussion	SPC	Glades, Hendry, Highlands, Okeechobee	114 min
Mar 14, 4:54 PM CST	Mesoscale Discussion	SPC	Broward, Glades, Hendry, Highlands, Okeechobee, Palm Beach	66 min

Nearby

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