Alert archive / Florida / Mesoscale Discussions in 2022
Mesoscale Discussion 1839
The Storm Prediction Center issued this mesoscale discussion at Sep 28, 2022, 2:38 AM EDT for 20 counties in Florida. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 28, 2022, 2:38 AM EDT (06:38 UTC)
- Expired
- Sep 28, 2022, 5:15 AM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 545
Counties Brevard County, FL, Broward County, FL, Charlotte County, FL, Collier County, FL, DeSoto County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Highlands County, FL, Indian River County, FL, Lee County, FL, Martin County, FL, Miami-Dade County, FL, Monroe County, FL, Okeechobee County, FL, Osceola County, FL, Palm Beach County, FL, Polk County, FL, Saint Lucie County, FL, Sarasota County, FL
The radar
The Miami radar (KAMX), 115 km from the middle of the area, began a volume at 06:39 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
Miami, FL (KMFL), launched 00:00Z, 6.6 hours before the alert went out and 106 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
- 1796 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 714 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 230 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 17.4
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 9:46 PM EDT | Mesoscale Discussion | SPC | Broward, Charlotte, Collier, DeSoto, Glades, Hardee and 14 more | 3 hr |
| Sep 28, 4:59 AM EDT | Tornado Watch | SPC | Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 16 more | 12 hr |
| Sep 28, 8:37 AM EDT | Mesoscale Discussion | SPC | Broward, Collier, DeSoto, Glades, Hardee, Hendry and 8 more | 113 min |
| Sep 28, 11:03 AM EDT | Mesoscale Discussion | SPC | Brevard, Broward, Glades, Hendry, Highlands, Indian River and 8 more | 117 min |
| Sep 28, 1:18 PM EDT | Mesoscale Discussion | SPC | Indian River, Okeechobee, Osceola, Polk, Saint Lucie | 117 min |
| Sep 28, 3:54 PM EDT | Mesoscale Discussion | SPC | Brevard, Indian River, Martin, Orange, Osceola, Saint Lucie and 2 more | 96 min |
| Sep 28, 4:31 PM EDT | Tornado Watch | SPC | Brevard, Indian River, Martin, Okeechobee, Orange, Osceola and 3 more | 8 hr |
Nearby
Mesoscale Discussions in Florida, 2022Every mesoscale discussion in 2022
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.