Alert archive / Florida / Mesoscale Discussions in 2005

Mesoscale Discussion 299

March 16, 200515 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Mar 16, 2005, 5:22 AM EST for 15 counties in Florida. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Mar 16, 2005, 5:22 AM EST (10:22 UTC)
Expired: Mar 16, 2005, 7:15 AM EST
In force: 113 min
Issued by: the Storm Prediction Center

Counties Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Gilchrist County, FL, Hamilton County, FL, Lafayette County, FL, Levy County, FL, Marion County, FL, Nassau County, FL, Putnam County, FL, Suwannee County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 123 km from the middle of the area, began a volume at 10:26 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, 10.4 hours before the alert went out and 191 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 532 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 212 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
Mar 16, 1:48 AM EST	Mesoscale Discussion	SPC	Bay, Calhoun, Gulf, Liberty	2 hr
Mar 16, 12:19 PM EST	Mesoscale Discussion	SPC	Alachua, Bradford, Citrus, Clay, Dixie, Flagler and 12 more	116 min
Mar 16, 2:10 PM EST	Tornado Watch	SPC	Alachua, Brevard, Citrus, Flagler, Gilchrist, Hardee and 19 more	6 hr
Mar 16, 4:22 PM EST	Mesoscale Discussion	SPC	Brevard, Flagler, Hillsborough, Indian River, Lake, Marion and 11 more	83 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.