Alert archive / Georgia / Mesoscale Discussions in 2016

Mesoscale Discussion 109

February 15, 201611 counties in Florida; 16 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Feb 15, 2016, 10:32 PM EST for 11 counties in Florida; 16 counties in Georgia. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued
Feb 15, 2016, 10:32 PM EST (03:32 UTC)
Expired
Feb 15, 2016, 11:30 PM EST
In force
58 min
Issued by
the Storm Prediction Center
All 27 counties

Dixie County, FL, Franklin County, FL, Gadsden County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Suwannee County, FL, Taylor County, FL, Wakulla County, FL, Ben Hill County, GA, Berrien County, GA, Brooks County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Grady County, GA, Irwin County, GA, Lanier County, GA, Lowndes County, GA, Mitchell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Worth County, GA

The radar

The Tallahassee radar (KTLH), 36 km from the middle of the area, began a volume at 03:31 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.5 hours before the alert went out and 34 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.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2016-02-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2016-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 366 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
42 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
940 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
366 m²/s²
0-3 km storm-relative helicity
383 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 15, 7:55 PM ESTMesoscale DiscussionSPCBay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 7 more2 hr
Feb 15, 8:07 PM ESTTornado WatchSPCDixie, Franklin, Gadsden, Jefferson, Lafayette, Leon and 4 more5 hr
Feb 16, 1:54 AM ESTMesoscale DiscussionSPCCharlotte, DeSoto, Glades, Hardee, Highlands, Hillsborough and 5 more2 hr
Feb 16, 2:19 AM ESTTornado WatchSPCBrevard, Charlotte, Collier, DeSoto, Glades, Hardee and 15 more5 hr
Feb 16, 4:59 AM ESTMesoscale DiscussionSPCHendry, Palm Beach61 min
Feb 16, 7:36 AM ESTMesoscale DiscussionSPCMiami-Dade, Monroe54 min
Feb 16, 1:41 AM ESTMesoscale DiscussionSPCBryan, Chatham, Effingham, Liberty64 min

Nearby

Mesoscale Discussions in Georgia, 2016Mesoscale Discussions in Florida, 2016Every mesoscale discussion in 2016

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.