Alert archive / Florida / Mesoscale Discussions in 2005

Mesoscale Discussion 358

March 23, 200513 counties in Florida

The Storm Prediction Center issued this mesoscale discussion at Mar 23, 2005, 2:17 AM EST for 13 counties in Florida. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Mar 23, 2005, 2:17 AM EST (07:17 UTC)
Expired
Mar 23, 2005, 4:15 AM EST
In force
118 min
Issued by
the Storm Prediction Center

Counties Citrus County, FL, Flagler County, FL, Hernando County, FL, Lake County, FL, Marion County, FL, Orange County, FL, Pasco County, FL, Pinellas County, FL, Putnam County, FL, Saint Johns County, FL, Seminole County, FL, Sumter County, FL, Volusia County, FL

The radar

The Tampa radar (KTBW), 126 km from the middle of the area, began a volume at 07:17 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

Tampa Bay, FL (KTBW), launched 00:00Z, 7.3 hours before the alert went out and 126 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, Tampa Bay, FL at 00:00Z on 2005-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 700 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, Tampa Bay, FL at 00:00Z on 2005-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 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
700 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1179 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.3
Supercell composite
5.1

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.

IssuedProductOfficeCountiesLasted
Mar 22, 8:39 PM ESTMesoscale DiscussionSPCCalhoun, Gadsden, Gulf, Jackson, Jefferson, Leon and 4 more36 min
Mar 23, 12:37 AM ESTMesoscale DiscussionSPCHolmes83 min
Mar 23, 2:35 AM ESTMesoscale DiscussionSPCBay, Calhoun, Gadsden, Gulf, Holmes, Jackson and 6 more85 min
Mar 23, 4:50 AM ESTTornado WatchSPCCitrus, Hardee, Hernando, Hillsborough, Lake, Manatee and 9 more6 hr
Mar 23, 6:21 AM ESTMesoscale DiscussionSPCCitrus, Hardee, Hernando, Hillsborough, Lake, Manatee and 9 more114 min
Mar 23, 8:46 AM ESTMesoscale DiscussionSPCBroward, Charlotte, Citrus, Collier, DeSoto, Glades and 23 more59 min
Mar 23, 10:46 AM ESTMesoscale DiscussionSPCBrevard, Broward, Charlotte, Collier, DeSoto, Glades and 11 more29 min
Mar 23, 2:20 PM ESTMesoscale DiscussionSPCBroward, Charlotte, Collier, Glades, Hendry, Lee and 4 more85 min

Nearby

Mesoscale Discussions in Florida, 2005Every 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.