Alert archive / Georgia / Mesoscale Discussions in 2017
Mesoscale Discussion 184
The Storm Prediction Center issued this mesoscale discussion at Feb 15, 2017, 11:23 AM EST for 12 counties in Florida; 22 counties in Georgia. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 15, 2017, 11:23 AM EST (16:23 UTC)
- Expired
- Feb 15, 2017, 2:00 PM EST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 34 counties
Baker County, FL, Bradford County, FL, Columbia County, FL, Duval County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Echols County, GA, Glynn County, GA, Irwin County, GA, Lanier County, GA, Lowndes County, GA, Pierce County, GA, Thomas County, GA, Tift County, GA, Ware County, GA, Wayne County, GA
The radar
The Moody AFB radar (KVAX), 45 km from the middle of the area, began a volume at 16:25 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, 4.4 hours before the alert went out and 87 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
- 110 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 554 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 251 m²/s²
- 0-3 km storm-relative helicity
- 264 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 |
|---|---|---|---|---|
| Feb 15, 1:50 PM EST | Mesoscale Discussion | SPC | Alachua, Citrus, Flagler, Hernando, Hillsborough, Lake and 8 more | 2 hr |
| Feb 15, 4:35 PM EST | Mesoscale Discussion | SPC | Brevard, DeSoto, Glades, Hardee, Highlands, Indian River and 7 more | 115 min |
| Feb 15, 10:19 AM EST | Mesoscale Discussion | SPC | Bryan, Bulloch, Candler, Effingham, Evans, Screven | 2 hr |
Nearby
Mesoscale Discussions in Georgia, 2017Mesoscale Discussions in Florida, 2017Every mesoscale discussion in 2017
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.