Alert archive / Florida / Mesoscale Discussions in 2004
Mesoscale Discussion 292
The Storm Prediction Center issued this mesoscale discussion at Apr 8, 2004, 10:16 AM EDT for 19 counties in Florida. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Apr 8, 2004, 10:16 AM EDT (14:16 UTC)
- Expired
- Apr 8, 2004, 12:15 PM EDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
Counties Alachua County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hernando County, FL, Hillsborough County, FL, Lake County, FL, Levy County, FL, Marion County, FL, Pasco County, FL, Pinellas County, FL, Putnam County, FL, Saint Johns County, FL, Sumter County, FL, Union County, FL, Volusia County, FL
The radar
The Tampa radar (KTBW), 137 km from the middle of the area, began a volume at 14:16 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
Tampa Bay, FL (KTBW), launched 12:00Z, 2.3 hours before the alert went out and 137 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
- 134 J/kg
- Mixed-layer CIN
- -206 J/kg
- Mixed-layer LCL
- 1145 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 188 m²/s²
- 0-3 km storm-relative helicity
- 247 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 8, 9:50 AM EDT | Mesoscale Discussion | SPC | Calhoun, Gadsden, Holmes, Jackson, Jefferson, Leon and 5 more | 85 min |
| Apr 8, 10:10 AM EDT | Severe Thunderstorm Watch | SPC | Escambia, Gadsden, Hamilton, Holmes, Jackson, Leon and 5 more | 7 hr |
| Apr 8, 10:45 AM EDT | Severe Thunderstorm Watch | SPC | Alachua, Bradford, Citrus, Clay, Flagler, Gilchrist and 11 more | 6 hr |
| Apr 8, 12:42 PM EDT | Mesoscale Discussion | SPC | Alachua, Bradford, Citrus, Clay, Flagler, Gilchrist and 11 more | 2 hr |
| Apr 8, 1:11 PM EDT | Mesoscale Discussion | SPC | Escambia, Gadsden, Hamilton, Holmes, Jackson, Leon and 5 more | 2 hr |
| Apr 8, 3:35 PM EDT | Mesoscale Discussion | SPC | Brevard, Hardee, Highlands, Hillsborough, Indian River, Okeechobee and 6 more | 55 min |
| Apr 8, 3:40 PM EDT | Mesoscale Discussion | SPC | Nassau | 65 min |
Nearby
Mesoscale Discussions in Florida, 2004Every mesoscale discussion in 2004
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.