Alert archive / Florida / Mesoscale Discussions in 2003
Mesoscale Discussion 595
The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2003, 10:53 AM EDT for 20 counties in Florida; 6 counties in Georgia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2003, 10:53 AM EDT (14:53 UTC)
- Expired
- Apr 26, 2003, 1:00 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 26 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Lafayette County, FL, Levy County, FL, Madison County, FL, Marion County, FL, Nassau County, FL, Putnam County, FL, Saint Johns County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Brantley County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Echols County, GA, Ware County, GA
The radar
The Jacksonville radar (KJAX), 86 km from the middle of the area, began a volume at 14:54 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 nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 2.9 hours before the alert went out and 87 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.
- Mixed-layer CAPE
- 502 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 698 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 8:22 PM EDT | Mesoscale Discussion | SPC | Gadsden, Holmes, Jackson, Walton, Washington | 113 min |
| Apr 25, 10:00 PM EDT | Severe Thunderstorm Watch | SPC | Bay, Calhoun, Escambia, Gadsden, Holmes, Jackson and 6 more | 5 hr |
| Apr 25, 11:52 PM EDT | Mesoscale Discussion | SPC | DeSoto, Glades, Hardee, Highlands, Hillsborough, Manatee and 4 more | 3 hr |
| Apr 26, 12:24 AM EDT | Mesoscale Discussion | SPC | Calhoun, Gadsden, Holmes, Jackson, Leon, Walton and 1 more | 96 min |
| Apr 26, 2:12 AM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bay, Bradford, Calhoun, Clay and 24 more | 63 min |
| Apr 25, 8:51 PM EDT | Mesoscale Discussion | SPC | Chattahoochee, Crawford, Dooly, Houston, Macon, Marion and 8 more | 54 min |
Nearby
Mesoscale 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; radar from the NEXRAD Level II archive.