Alert archive / Florida / Mesoscale Discussions in 2003
Mesoscale Discussion 2465
The Storm Prediction Center issued this mesoscale discussion at Oct 28, 2003, 3:05 PM EST for 19 counties in Florida; 6 counties in Georgia. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- Oct 28, 2003, 3:05 PM EST (20:05 UTC)
- Expired
- Oct 28, 2003, 4:00 PM EST
- In force
- 55 min
- Issued by
- the Storm Prediction Center
All 25 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Gilchrist County, FL, Hamilton County, FL, Lafayette County, FL, Levy 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, Echols County, GA, Glynn County, GA, Ware County, GA
The radar
The Jacksonville radar (KJAX), 72 km from the middle of the area, began a volume at 20:05 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 8.1 hours before the alert went out and 73 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 696 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Oct 28, 10:52 AM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Clay, Columbia, Dixie and 14 more | 53 min |
| Oct 28, 11:20 AM EST | Tornado Watch | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 13 more | 6 hr |
| Oct 28, 12:24 PM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 13 more | 66 min |
| Oct 28, 3:55 PM EST | Mesoscale Discussion | SPC | Baker, Columbia, Dixie, Gilchrist, Lafayette, Nassau and 2 more | 65 min |
| Oct 28, 4:30 PM EST | Tornado Watch | SPC | Alachua, Baker, Bradford, Citrus, Clay, Dixie and 12 more | 6 hr |
| Oct 28, 6:24 PM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Duval and 11 more | 2 hr |
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.