Alert archive / Florida / Mesoscale Discussions in 2003

Mesoscale Discussion 174

March 1, 200311 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Mar 1, 2003, 2:21 AM CST for 11 counties in Florida. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Mar 1, 2003, 2:21 AM CST (08:21 UTC)
Expired: Mar 1, 2003, 5:15 AM CST
In force: 3 hr
Issued by: the Storm Prediction Center

Counties Bay County, FL, Calhoun County, FL, Citrus County, FL, Dixie County, FL, Franklin County, FL, Gulf County, FL, Lafayette County, FL, Levy County, FL, Liberty County, FL, Taylor County, FL, Wakulla County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.4 hours before the alert went out and 65 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 824 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 195 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 1, 9:11 AM CST	Mesoscale Discussion	SPC	Alachua, Baker, Bay, Bradford, Calhoun, Clay and 20 more	3 hr
Mar 1, 12:25 PM CST	Mesoscale Discussion	SPC	Broward, Glades, Hardee, Hendry, Highlands, Indian River and 4 more	3 hr
Mar 1, 12:55 PM CST	Severe Thunderstorm Watch	SPC	Alachua, Baker, Bradford, Clay, Columbia, Dixie and 20 more	5 hr
Mar 1, 3:24 PM CST	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Clay, Columbia, Dixie and 20 more	2 hr
Mar 1, 5:23 PM CST	Mesoscale Discussion	SPC	Alachua, Baker, Bay, Bradford, Calhoun, Clay and 17 more	67 min

Nearby

Mesoscale Discussions in Florida, 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.