Alert archive / Florida / Mesoscale Discussions in 2003
Mesoscale Discussion 291
The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2003, 3:08 PM EST for 23 counties in Florida. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2003, 3:08 PM EST (20:08 UTC)
- Expired
- Mar 19, 2003, 6:15 PM EST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 23 counties
Brevard County, FL, Broward County, FL, Duval County, FL, Flagler County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Highlands County, FL, Indian River County, FL, Lake County, FL, Marion County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Palm Beach County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Saint Lucie County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 91 km from the middle of the area, began a volume at 20:11 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
Cape Canaveral, FL (KXMR), launched 12:00Z, 8.1 hours before the alert went out and 132 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
- 1017 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 152 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 6.7
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 |
|---|---|---|---|---|
| Mar 18, 7:39 PM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Holmes, Jackson, Okaloosa, Santa Rosa and 2 more | 3 hr |
| Mar 18, 8:30 PM EST | Tornado Watch | SPC | Escambia, Okaloosa, Santa Rosa | 6 hr |
| Mar 18, 10:10 PM EST | Mesoscale Discussion | SPC | Escambia | 3 hr |
| Mar 18, 11:25 PM EST | Tornado Watch | SPC | Escambia | 7 hr |
| Mar 19, 12:53 AM EST | Mesoscale Discussion | SPC | Hamilton, Jefferson, Leon, Madison, Taylor | 3 hr |
| Mar 19, 6:32 PM EST | Mesoscale Discussion | SPC | Baker, Bradford, Brevard, Clay, Duval, Flagler and 10 more | 118 min |
Nearby
Mesoscale Discussions in Florida, 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.