Alert archive / Florida / Mesoscale Discussions in 2023
Mesoscale Discussion 2199
The Storm Prediction Center issued this mesoscale discussion at Sep 26, 2023, 2:22 PM EDT for 15 counties in Florida. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- Sep 26, 2023, 2:22 PM EDT (18:22 UTC)
- Expired
- Sep 26, 2023, 3:15 PM EDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 5%
Counties Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Levy County, FL, Marion County, FL, Putnam County, FL, Saint Johns County, FL, Union County, FL, Volusia County, FL
The radar
The Jacksonville radar (KJAX), 90 km from the middle of the area, began a volume at 18:24 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
Jacksonville, FL (KJAX), launched 12:00Z, 6.4 hours before the alert went out and 92 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
- 1016 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 800 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
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 26, 8:54 AM EDT | Mesoscale Discussion | SPC | Franklin, Gulf, Jefferson, Leon, Liberty, Madison and 2 more | 66 min |
Nearby
Mesoscale Discussions in Florida, 2023Every mesoscale discussion in 2023
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.