Alert archive / Georgia / Mesoscale Discussions in 2017
Mesoscale Discussion 622
The Storm Prediction Center issued this mesoscale discussion at May 1, 2017, 1:13 PM EDT for 20 counties in Georgia; 5 counties in North Carolina; 12 counties in South Carolina. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- May 1, 2017, 1:13 PM EDT (17:13 UTC)
- Expired
- May 1, 2017, 2:45 PM EDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 37 counties
Baldwin County, GA, Burke County, GA, Columbia County, GA, Elbert County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Hart County, GA, Jefferson County, GA, Lincoln County, GA, Madison County, GA, McDuffie County, GA, Oglethorpe County, GA, Putnam County, GA, Richmond County, GA, Taliaferro County, GA, Warren County, GA, Washington County, GA, Wilkes County, GA, Wilkinson County, GA, Cleveland County, NC, Henderson County, NC, Polk County, NC, Rutherford County, NC, Transylvania County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Edgefield County, SC, Greenville County, SC, Greenwood County, SC, Laurens County, SC, McCormick County, SC, Pickens County, SC, Saluda County, SC, Spartanburg County, SC, Union County, SC
The radar
The Greer radar (KGSP), 80 km from the middle of the area, began a volume at 17:15 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.2 hours before the alert went out and 197 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
- 118 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 300 m²/s²
- 0-3 km storm-relative helicity
- 336 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.3
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 |
|---|---|---|---|---|
| May 1, 8:15 AM EDT | Mesoscale Discussion | SPC | Baker, Calhoun, Chattahoochee, Clay, Crawford, Crisp and 25 more | 2 hr |
| May 1, 4:02 PM EDT | Mesoscale Discussion | SPC | Alexander, Anson, Cabarrus, Catawba, Davidson, Davie and 13 more | 118 min |
| May 1, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Caswell, Chatham, Davidson, Durham and 19 more | 5 hr |
Nearby
Mesoscale Discussions in Georgia, 2017Mesoscale Discussions in South Carolina, 2017Mesoscale Discussions in North Carolina, 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.