Alert archive / Florida / Mesoscale Discussions in 2016

Mesoscale Discussion 836

June 6, 201620 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2016, 4:38 PM EDT for 20 counties in Florida. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jun 6, 2016, 4:38 PM EDT (20:38 UTC)
Expired: Jun 6, 2016, 7:15 PM EDT
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties DeSoto County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Indian River County, FL, Lake County, FL, Marion County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Palm Beach County, FL, Pasco County, FL, Polk County, FL, Saint Lucie County, FL, Seminole County, FL, Sumter County, FL

The radar

The Melbourne radar (KMLB), 80 km from the middle of the area, began a volume at 20:36 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

Tampa Bay, FL (KTBW), launched 12:00Z, 8.6 hours before the alert went out and 105 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 610 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 711 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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.

Issued	Product	Office	Counties	Lasted
Jun 6, 4:25 AM EDT	Mesoscale Discussion	SPC	Charlotte, Lee, Manatee, Sarasota	2 hr
Jun 6, 10:39 AM EDT	Mesoscale Discussion	SPC	Manatee, Pinellas, Sarasota	96 min
Jun 6, 11:00 AM EDT	Mesoscale Discussion	SPC	Alachua, Bradford, Lake, Marion, Putnam, Sumter	90 min
Jun 6, 1:30 PM EDT	Mesoscale Discussion	SPC	Charlotte, Collier, DeSoto, Glades, Hardee, Hendry and 11 more	3 hr
Jun 6, 3:42 PM EDT	Mesoscale Discussion	SPC	Duval, Flagler, Nassau, Saint Johns, Volusia	2 hr

Nearby

Mesoscale Discussions in Florida, 2016 Every 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.