Alert archive / Florida / Mesoscale Discussions in 2008

Mesoscale Discussion 377

March 8, 20085 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Mar 8, 2008, 4:40 AM EST for 5 counties in Florida. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Mar 8, 2008, 4:40 AM EST (09:40 UTC)
Expired
Mar 8, 2008, 6:15 AM EST
In force
95 min
Issued by
the Storm Prediction Center

Counties Broward County, FL, Martin County, FL, Miami-Dade County, FL, Monroe County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 88 km from the middle of the area, began a volume at 09:43 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 00:00Z, 9.7 hours before the alert went out and 230 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, Cape Canaveral, FL at 00:00Z on 2008-03-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1084 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, Cape Canaveral, FL at 00:00Z on 2008-03-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 square meters per square second.19395878Sfc1 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
1084 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1146 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
1.0
Supercell composite
4.9

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
Mar 7, 9:43 PM ESTMesoscale DiscussionSPCBrevard, Broward, Charlotte, Collier, DeSoto, Flagler and 22 more62 min
Mar 8, 12:32 AM ESTMesoscale DiscussionSPCBrevard, Broward, Charlotte, Collier, DeSoto, Flagler and 16 more58 min
Mar 8, 1:48 AM ESTTornado WatchSPCBrevard, Collier, Glades, Hendry, Indian River, Martin and 4 more5 hr

Nearby

Mesoscale Discussions in Florida, 2008Every mesoscale discussion in 2008

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.