Alert archive / Florida / Mesoscale Discussions in 2005
Mesoscale Discussion 2355
The Storm Prediction Center issued this mesoscale discussion at Oct 23, 2005, 6:57 PM EDT for 23 counties in Florida. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 23, 2005, 6:57 PM EDT (22:57 UTC)
- Expired
- Oct 23, 2005, 9:00 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 23 counties
Broward County, FL, Charlotte County, FL, Collier County, FL, DeSoto County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Lake County, FL, Lee County, FL, Manatee County, FL, Miami-Dade County, FL, Monroe County, FL, Okeechobee County, FL, Osceola County, FL, Palm Beach County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Sarasota County, FL, Sumter County, FL
The radar
The Tampa radar (KTBW), 89 km from the middle of the area, began a volume at 22:58 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, 11.0 hours before the alert went out and 89 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
- 1164 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 809 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.6
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 23, 2:59 PM EDT | Mesoscale Discussion | SPC | Charlotte, Collier, Hendry, Lee, Miami-Dade, Monroe | 2 hr |
| Oct 23, 3:40 PM EDT | Tornado Watch | SPC | Broward, Charlotte, Collier, DeSoto, Glades, Hardee and 14 more | 6 hr |
Nearby
Mesoscale Discussions in Florida, 2005Every mesoscale discussion in 2005
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.