Alert archive / Florida / Mesoscale Discussions in 2008

Mesoscale Discussion 371

March 7, 200810 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Mar 7, 2008, 3:10 PM EST for 10 counties in Florida. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Mar 7, 2008, 3:10 PM EST (20:10 UTC)
Expired
Mar 7, 2008, 4:45 PM EST
In force
95 min
Issued by
the Storm Prediction Center

Counties Citrus County, FL, Hernando County, FL, Hillsborough County, FL, Lake County, FL, Orange County, FL, Pasco County, FL, Polk County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL

The radar

The Tampa radar (KTBW), 112 km from the middle of the area, began a volume at 20:12 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.2 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-pSkew-T log-p diagram, Cape Canaveral, FL at 12:00Z on 2008-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1005 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 12:00Z on 2008-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 214 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
1005 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
632 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
214 m²/s²
0-3 km storm-relative helicity
280 m²/s²
Significant tornado parameter
0.9
Supercell composite
7.0

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.

IssuedProductOfficeCountiesLasted
Mar 7, 3:49 AM ESTMesoscale DiscussionSPCBay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 8 more86 min
Mar 7, 6:13 AM ESTMesoscale DiscussionSPCAlachua, Baker, Bay, Bradford, Calhoun, Citrus and 35 more2 hr
Mar 7, 6:45 AM ESTTornado WatchSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 21 more5 hr
Mar 7, 11:29 AM ESTMesoscale DiscussionSPCCitrus, Flagler, Hernando, Hillsborough, Lake, Marion and 10 more2 hr
Mar 7, 11:59 AM ESTTornado WatchSPCBrevard, Citrus, Flagler, Hernando, Hillsborough, Lake and 12 more7 hr
Mar 7, 5:50 PM ESTMesoscale DiscussionSPCBrevard, Charlotte, DeSoto, Flagler, Glades, Hardee and 19 more55 min
Mar 7, 6:35 PM ESTTornado WatchSPCBrevard, Charlotte, Collier, DeSoto, Glades, Hardee and 19 more7 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.