Alert archive / Florida / Mesoscale Discussions in 2005

Mesoscale Discussion 237

February 27, 20056 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Feb 27, 2005, 11:40 AM EST for 6 counties in Florida. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Feb 27, 2005, 11:40 AM EST (16:40 UTC)
Expired: Feb 27, 2005, 1:45 PM EST
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Broward County, FL, Collier County, FL, Hendry County, FL, Miami-Dade County, FL, Monroe County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 88 km from the middle of the area, began a volume at 16:40 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 nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 4.7 hours before the alert went out and 220 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: 40 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 144 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
Feb 27, 9:01 AM EST	Mesoscale Discussion	SPC	Hardee, Hillsborough, Manatee, Pinellas, Sarasota	119 min
Feb 27, 10:40 AM EST	Tornado Watch	SPC	Brevard, Charlotte, DeSoto, Glades, Hardee, Hernando and 15 more	7 hr
Feb 27, 1:08 PM EST	Mesoscale Discussion	SPC	Brevard, Charlotte, DeSoto, Glades, Hardee, Hernando and 13 more	2 hr
Feb 27, 4:29 PM EST	Mesoscale Discussion	SPC	Brevard, Charlotte, DeSoto, Glades, Hardee, Highlands and 12 more	91 min

Nearby

Mesoscale Discussions in Florida, 2005 Every mesoscale discussion in 2005

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.