Alert archive / Florida / Mesoscale Discussions in 2007
Mesoscale Discussion 2234
The Storm Prediction Center issued this mesoscale discussion at Dec 16, 2007, 3:16 AM EST for 31 counties in Florida; 13 counties in Georgia; 5 counties in South Carolina. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Dec 16, 2007, 3:16 AM EST (08:16 UTC)
- Expired
- Dec 16, 2007, 5:15 AM EST
- In force
- 119 min
- Issued by
- the Storm Prediction Center
All 49 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, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Hardee County, FL, Hernando County, FL, Hillsborough County, FL, Lake County, FL, Levy County, FL, Manatee County, FL, Marion County, FL, Nassau County, FL, Orange County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Sarasota County, FL, Seminole County, FL, Sumter County, FL, Suwannee County, FL, Union County, FL, Volusia County, FL, Brantley County, GA, Bryan County, GA, Camden County, GA, Charlton County, GA, Chatham County, GA, Effingham County, GA, Glynn County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA, Beaufort County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Jasper County, SC
The radar
The Jacksonville radar (KJAX), 96 km from the middle of the area, began a volume at 08:18 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 00:00Z, 8.3 hours before the alert went out and 98 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
- 884 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1019 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 242 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.4
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 |
|---|---|---|---|---|
| Dec 15, 9:19 PM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 14 more | 116 min |
| Dec 15, 9:42 PM EST | Tornado Watch | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 24 more | 8 hr |
| Dec 16, 12:29 AM EST | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 24 more | 2 hr |
| Dec 16, 5:10 AM EST | Mesoscale Discussion | SPC | Flagler, Hernando, Hillsborough, Lake, Marion, Orange and 4 more | 65 min |
| Dec 16, 6:15 AM EST | Tornado Watch | SPC | Lake, Orange, Seminole, Volusia | 107 min |
| Dec 16, 7:32 AM EST | Mesoscale Discussion | SPC | Orange, Seminole, Volusia | 58 min |
Nearby
Mesoscale Discussions in Florida, 2007Mesoscale Discussions in Georgia, 2007Mesoscale Discussions in South Carolina, 2007Every mesoscale discussion in 2007
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.