Alert archive / Florida / Mesoscale Discussions in 2005

Mesoscale Discussion 1008

May 25, 20057 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at May 25, 2005, 3:54 PM EDT for 7 counties in Florida. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: May 25, 2005, 3:54 PM EDT (19:54 UTC)
Expired: May 25, 2005, 5:00 PM EDT
In force: 66 min
Issued by: the Storm Prediction Center

Counties Highlands County, FL, Indian River County, FL, Martin County, FL, Okeechobee County, FL, Osceola County, FL, Polk County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 83 km from the middle of the area, began a volume at 19:56 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 7.9 hours before the alert went out and 123 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: 116 J/kg
Mixed-layer CIN: -193 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

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
May 25, 1:34 PM EDT	Mesoscale Discussion	SPC	Broward, Highlands, Indian River, Martin, Okeechobee, Palm Beach and 2 more	86 min
May 25, 2:00 PM EDT	Severe Thunderstorm Watch	SPC	Brevard, Glades, Hendry, Highlands, Indian River, Martin and 5 more	6 hr
May 25, 5:42 PM EDT	Mesoscale Discussion	SPC	Glades, Hendry, Highlands, Martin, Okeechobee, Palm Beach and 1 more	2 hr

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.