Alert archive / Florida / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 78

March 27, 200340 counties in Florida

The Storm Prediction Center issued this severe thunderstorm watch at Mar 27, 2003, 11:00 AM EST for 40 counties in Florida. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 27, 2003, 11:00 AM EST (16:00 UTC)
Expired
Mar 27, 2003, 5:00 PM EST
In force
6 hr
Issued by
the Storm Prediction Center
All 40 counties

Alachua County, FL, Baker County, FL, Bradford County, FL, Brevard County, FL, Charlotte County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, DeSoto County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Indian River County, FL, Lafayette County, FL, Lake County, FL, Lee County, FL, Levy County, FL, Manatee County, FL, Marion County, FL, Martin County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Palm Beach County, FL, Pasco County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Saint Lucie County, FL, Seminole County, FL, Sumter County, FL, Suwannee County, FL, Union County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 115 km from the middle of the area, began a volume at 16:00 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.

Warnings issued inside it

26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Mar 27, 11:08 AM ESTSevere Thunderstorm WarningTBWDeSoto52 min
Mar 27, 12:10 PM ESTSevere Thunderstorm WarningTBWLee65 min
Mar 27, 12:22 PM ESTSevere Thunderstorm WarningJAXMarion38 min
Mar 27, 12:51 PM ESTSevere Thunderstorm WarningJAXAlachua39 min
Mar 27, 1:00 PM ESTSevere Thunderstorm WarningTBWHillsborough30 min
Mar 27, 1:04 PM ESTSevere Thunderstorm WarningTBWLevy31 min
Mar 27, 1:20 PM ESTSevere Thunderstorm WarningTBWPasco40 min
Mar 27, 1:29 PM ESTSevere Thunderstorm WarningJAXMarion46 min
Mar 27, 1:45 PM ESTSevere Thunderstorm WarningTBWCitrus30 min
Mar 27, 2:01 PM ESTSevere Thunderstorm WarningTBWHernando29 min
Mar 27, 2:08 PM ESTSevere Thunderstorm WarningTBWLevy37 min
Mar 27, 2:19 PM ESTSevere Thunderstorm WarningTBWCitrus, Sumter41 min
Mar 27, 2:20 PM ESTSevere Thunderstorm WarningTBWHernando, Pasco25 min
Mar 27, 2:32 PM ESTSevere Thunderstorm WarningJAXAlachua28 min
Mar 27, 2:37 PM ESTTornado WarningMFLHendry, Palm Beach53 min
Mar 27, 2:37 PM ESTTornado WarningTBWLee23 min
Mar 27, 2:40 PM ESTTornado WarningMFLHendry, Palm Beach50 min
Mar 27, 2:42 PM ESTTornado WarningTBWLevy48 min
Mar 27, 2:50 PM ESTTornado WarningMFLHendry55 min
Mar 27, 2:52 PM ESTSevere Thunderstorm WarningJAXPutnam38 min
Mar 27, 2:58 PM ESTSevere Thunderstorm WarningTBWHernando, Pasco47 min
Mar 27, 3:01 PM ESTSevere Thunderstorm WarningJAXMarion44 min
Mar 27, 3:08 PM ESTTornado WarningTBWPasco22 min
Mar 27, 3:27 PM ESTTornado WarningMFLPalm Beach63 min
Mar 27, 4:19 PM ESTTornado WarningMFLPalm Beach56 min
Mar 27, 4:37 PM ESTSevere Thunderstorm WarningTBWPasco38 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 4.0 hours before the alert went out and 154 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 12:00Z on 2003-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 845 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 12:00Z on 2003-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 square meters per square second.1939587897117Sfc1 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
845 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 27, 10:27 AM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Brevard, Broward, Charlotte and 39 more2 hr
Mar 27, 1:36 PM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Brevard, Charlotte, Citrus and 38 more84 min
Mar 27, 2:15 PM ESTTornado WatchSPCBroward, Collier, Hendry, Miami-Dade, Monroe, Palm Beach5 hr
Mar 27, 4:10 PM ESTMesoscale DiscussionSPCBroward, Collier, Hendry, Miami-Dade, Monroe, Palm Beach95 min

Nearby

Severe Thunderstorm Watches in Florida, 2003Every severe thunderstorm watch in 2003

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.