Alert archive / Florida / Mesoscale Discussions in 2003
Mesoscale Discussion 1065
The Storm Prediction Center issued this mesoscale discussion at May 19, 2003, 1:30 PM EDT for 46 counties in Florida; Brooks County, Echols County, Georgia. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- May 19, 2003, 1:30 PM EDT (17:30 UTC)
- Expired
- May 19, 2003, 3:00 PM EDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 48 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Brevard County, FL, Broward County, FL, Charlotte County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, DeSoto County, FL, Dixie County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Glades County, FL, Hamilton County, FL, Hardee County, FL, Hendry County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Indian River County, FL, Jefferson County, FL, Lafayette County, FL, Lake County, FL, Levy County, FL, Madison 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, Pinellas 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, Taylor County, FL, Union County, FL, Volusia County, FL, Brooks County, GA, Echols County, GA
The radar
The Tampa radar (KTBW), 123 km from the middle of the area, began a volume at 17:29 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
Tampa Bay, FL (KTBW), launched 12:00Z, 5.5 hours before the alert went out and 123 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.
- Mixed-layer CAPE
- 1772 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
297 ACUS11 KWNS 191731 SWOMCD SPC MCD 191730 FLZ000-GAZ000-191900- MESOSCALE DISCUSSION 1065 NWS STORM PREDICTION CENTER NORMAN OK 1230 PM CDT MON MAY 19 2003 AREAS AFFECTED...FL CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 191730Z - 191900Z THE THREAT OF ISOLATED DAMAGING WINDS/SMALL HAIL IS EXPECTED TO INCREASE OVER THE NEXT COUPLE OF HOURS. A WW IS NOT ANTICIPATED AT THIS TIME. RECENT SATELLITE IMAGERY INDICATES THAT BOTH E AND W SEA BREEZE BOUNDARIES ARE BECOMING BETTER ESTABLISHED OVER THE PENINSULA WITH AN OUTFLOW BOUNDARY INTERSECTING THE W COAST SEA BREEZE OVER JEFFERSON COUNTY IN THE ERN PNHDL. 12Z RAOBS AND CURRENT RUC POINT FORECAST SOUNDINGS INDICATE A MODERATELY UNSTABLE AND UNCAPPED AIRMASS WITH MLCAPES APPROACHING 2000-2500 J/KG. LOCAL VWP DATA INDICATE RELATIVELY WEAK MID AND UPPER-LEVEL WINDS ACROSS THE AREA DOWNSTREAM FROM LOW OVER THE CNTRL GULF COAST. ALTHOUGH THE MAJORITY OF CONVECTION ACROSS THE PENINSULA IS EXPECTED TO REMAIN RATHER DISORGANIZED THIS AFTERNOON...LOW-LEVEL CONVERGENCE ALONG AFOREMENTIONED BOUNDARIES MAY BE SUFFICIENT TO SUPPORT A FEW PULSE SEVERE STORMS. RELATIVELY DRY AIR OBSERVED GENERALLY ABOVE 600MB ON THIS MORNING/S OBSERVED SOUNDINGS SUGGESTS THE POTENTIAL FOR ISOLATED DAMAGING DOWNBURSTS WITH THE STRONGEST STORMS. SMALL HAIL WILL ALSO BE POSSIBLE. ..MEAD.. 05/19/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MFL...MLB...TBW...JAX...TAE... 29068357 29788413 30308440 30868393 30808300 30598203 30108116 29178082 28048035 27428017 26857997 26218001 25888111 27448257
Nearby
Mesoscale Discussions in Florida, 2003Mesoscale Discussions in Georgia, 2003Every mesoscale discussion 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.