Alert archive / Florida / Mesoscale Discussions in 2006

Mesoscale Discussion 1149

June 12, 20066 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2006, 5:38 AM EDT for 6 counties in Florida. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 12, 2006, 5:38 AM EDT (09:38 UTC)
Expired: Jun 12, 2006, 7:15 AM EDT
In force: 97 min
Issued by: the Storm Prediction Center

Counties Charlotte County, FL, Hillsborough County, FL, Lee County, FL, Manatee County, FL, Pinellas County, FL, Sarasota County, FL

The radar

The Tampa radar (KTBW), 52 km from the middle of the area, began a volume at 09:40 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 466Jun 12, 9:05 AM EDT

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 9.6 hours before the alert went out and 52 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: 121 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -60 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 12, 8:45 AM EDT	Mesoscale Discussion	SPC	Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 16 more	90 min
Jun 12, 9:07 AM EDT	Tornado Watch	SPC	Brevard, Charlotte, Citrus, Collier, DeSoto, Glades and 18 more	8 hr
Jun 12, 12:36 PM EDT	Mesoscale Discussion	SPC	Brevard, Charlotte, Citrus, Collier, DeSoto, Glades and 20 more	114 min
Jun 12, 4:35 PM EDT	Tornado Watch	SPC	Charlotte, DeSoto, Hardee, Highlands, Hillsborough, Manatee and 3 more	5 hr
Jun 12, 7:46 PM EDT	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Citrus, Clay, Columbia and 10 more	119 min

Nearby

Mesoscale Discussions in Florida, 2006 Every mesoscale discussion in 2006

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.