Alert archive / Florida / Mesoscale Discussions in 2003

Mesoscale Discussion 250

March 14, 20036 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Mar 14, 2003, 5:54 PM EST for 6 counties in Florida. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Mar 14, 2003, 5:54 PM EST (22:54 UTC)
Expired: Mar 14, 2003, 7:00 PM EST
In force: 66 min
Issued by: the Storm Prediction Center

Counties Broward County, FL, Glades County, FL, Hendry County, FL, Highlands County, FL, Okeechobee County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 136 km from the middle of the area, began a volume at 22:54 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 12:00Z, 10.9 hours before the alert went out and 121 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: 1311 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1037 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 65 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 13, 8:48 PM EST	Mesoscale Discussion	SPC	Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 5 more	57 min
Mar 14, 12:58 PM EST	Mesoscale Discussion	SPC	Bay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 10 more	2 hr
Mar 14, 2:36 PM EST	Mesoscale Discussion	SPC	Glades, Hendry, Highlands, Okeechobee	114 min
Mar 14, 5:05 PM EST	Severe Thunderstorm Watch	SPC	Escambia, Holmes, Okaloosa, Santa Rosa, Walton	5 hr

Nearby

Mesoscale Discussions in Florida, 2003 Every mesoscale discussion in 2003

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.