Alert archive / Florida / Mesoscale Discussions in 2020

Mesoscale Discussion 103

February 7, 202011 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Feb 7, 2020, 1:57 AM EST for 11 counties in Florida. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Feb 7, 2020, 1:57 AM EST (06:57 UTC)
Expired: Feb 7, 2020, 4:00 AM EST
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 5%

Counties Broward County, FL, Collier County, FL, Glades County, FL, Hendry County, FL, Indian River County, FL, Martin County, FL, Miami-Dade County, FL, Monroe County, FL, Okeechobee County, FL, Palm Beach County, FL, Saint Lucie County, FL

The radar

The Miami radar (KAMX), 84 km from the middle of the area, began a volume at 06:59 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

Miami, FL (KMFL), launched 00:00Z, 7.0 hours before the alert went out and 94 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: 247 J/kg
Mixed-layer CIN: -225 J/kg
Mixed-layer LCL: 1012 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 348 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.0

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
Feb 6, 7:32 PM EST	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Citrus, Clay, Columbia and 12 more	118 min
Feb 6, 8:47 PM EST	Mesoscale Discussion	SPC	Brevard, Charlotte, Citrus, DeSoto, Flagler, Hardee and 18 more	88 min
Feb 6, 9:25 PM EST	Tornado Watch	SPC	Brevard, Charlotte, DeSoto, Hardee, Hernando, Highlands and 15 more	6 hr
Feb 7, 12:38 AM EST	Mesoscale Discussion	SPC	Brevard, Charlotte, DeSoto, Glades, Hardee, Hendry and 9 more	2 hr

Nearby

Mesoscale Discussions in Florida, 2020 Every mesoscale discussion in 2020

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.