Alert archive / Florida / Mesoscale Discussions in 2004

Mesoscale Discussion 133

February 25, 2004Miami-Dade County, Monroe County, Florida

The Storm Prediction Center issued this mesoscale discussion at Feb 25, 2004, 1:51 PM EST for Miami-Dade County, Monroe County, Florida. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Feb 25, 2004, 1:51 PM EST (18:51 UTC)
Expired
Feb 25, 2004, 3:45 PM EST
In force
114 min
Issued by
the Storm Prediction Center

Counties Miami-Dade County, FL, Monroe County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 6.9 hours before the alert went out and 41 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-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2004-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 880 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2004-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
880 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
597 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
0.7
Supercell composite
5.2

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.

IssuedProductOfficeCountiesLasted
Feb 25, 3:45 AM ESTMesoscale DiscussionSPCBay, Calhoun, Escambia, Gulf, Holmes, Jackson and 4 more3 hr
Feb 25, 9:06 AM ESTMesoscale DiscussionSPCBroward, Collier, Hendry, Martin, Monroe, Palm Beach114 min
Feb 25, 10:35 AM ESTSevere Thunderstorm WatchSPCBroward, Collier, Hendry, Miami-Dade, Monroe, Palm Beach5 hr

Nearby

Mesoscale Discussions in Florida, 2004Every mesoscale discussion in 2004

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.