Alert archive / Florida / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 170, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 12, 2003, 3:39 PM EDT for Duval County, Florida. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 12, 2003, 3:39 PM EDT (19:39 UTC)
- Expired
- Jun 12, 2003, 4:30 PM EDT
- In force
- 51 min
- Issued by
- NWS Jacksonville, FL
- Area
- Counties, with a storm outline in the text
County Duval County, FL
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 7.7 hours before the alert went out and 235 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
- 2131 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 587 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 2:55 PM EDT, 44 minutes earlier.
Area forecast discussion, Jun 12, 2:55 PM EDT, 44 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 255 PM EDT THU JUN 12 2003 MID/UPPER SHORT WAVE IS ENHANCING DEVELOPMENT OF CONVECTION ACROSS NE FLORIDA EARLY THIS AFTERNOON. QUITE A STRONG CLUSTER IS MOVING THROUGH THE GAINESVILLE/SUWANNEE VALLEY AREA. LO/MID LEVEL SWLY FLOW COMBINED WITH ABUNDANT MOISTURE AND INSTABILITY WILL MAKE THIS A VERY ACTIVE EVENING FOR STORMS. WILL GO WITH LIKELY POPS FIRST PERIOD. UPPER TROUGH WILL PERSIST ACROSS THE SOUTHEAST U.S. INTO THE WEEKEND WITH PERIODIC DISTURBANCES MOVING THROUGH THE CWA. INCREASING CLOUDS ON FRIDAY WILL AND LESS INSTABILITY WILL LESSEN THE CHANCE FOR STRONG STORMS. THE CAPE IS EXPECTED TO DROP BELOW 1000 J/KG ON FRIDAY WHEREAS ITS ABOVE 3500 J/KG THIS AFTN. MORE OF THE SAME ON SATURDAY AND WILL GO WITH 50% POPS OVER MOST OF THE AREA ON FRI/SAT AFTERNOONS. MARINE...BUOY 41012 HAS CONSISTENTLY REPORTED 10-15 KT WITH 3 FT SEAS. SOUTH TO SW WINDS WILL CONTINUE THROUGH THE WEEKEND. .PRELIMINARY POINT TEMPS/POPS... AMG 72 89 71 89 / 50 50 40 40 SSI 75 86 76 87 / 50 50 40 40 JAX 73 89 72 90 / 60 50 40 40 SGJ 74 86 73 86 / 60 50 40 40 GNV 72 90 71 91 / 60 50 40 40 OCF 72 90 71 91 / 60 50 40 40 .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. MKT/EZ
Hazardous weather outlook, Jun 12, 12:21 PM EDT, 3 hours 18 minutes before
FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-122130- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 1221 PM EDT THU JUN 12 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...THIS AFTERNOON AND TONIGHT... SCATTERED THUNDERSTORMS WILL FORM ALONG THE SEABREEZE FRONTS EARLY THEN INCREASE IN COVERAGE ACROSS INLAND AREAS BY LATE AFTERNOON. STORM MOTION WILL BE TO THE NORTHEAST AT 10 TO 15 MPH. THESE STORMS WILL DRIFT TOWARD THE EAST COAST THIS EVENING. ISOLATED PULSE SEVERE STORMS COULD DEVELOP AND THE PRIMARY HAZARDS WOULD BE FREQUENT LIGHTNING...DAMAGING DOWNBURST WINDS AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP EACH DAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME...HOWEVER STORM SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED FOR YOUR AREA. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WWW.SRH.NOAA.GOV/JAX. TRABERT
In the hours before
Special weather statement, Jun 12, 2:34 PM EDT, 1 hour 5 minutes before
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</html>Special weather statement, Jun 12, 2:46 PM EDT, 53 minutes before
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</html>Special weather statement, Jun 12, 3:02 PM EDT, 37 minutes before
FLZ040-121930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 302 PM EDT THU JUN 12 2003 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR SOUTHWESTERN MARION COUNTY FOR SMALL HAIL AND GUSTY WINDS OF 45 TO 55 MPH VALID UNTIL 330 PM EDT... AT 302 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED OVER CITRUS SPRINGS...MOVING NORTH AT 10 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND CITRUS SPRINGS...RAINBOW LAKES ESTATES AND CHATMAR THROUGH 330 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. ZAPPE
Special weather statement, Jun 12, 3:14 PM EDT, 25 minutes before
FLZ023-GAZ164-121945- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 314 PM EDT THU JUN 12 2003 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR BAKER AND SOUTHERN CHARLTON COUNTIES FOR SMALL HAIL AND GUSTY WINDS OF 45 TO 55 MPH VALID UNTIL 345 PM EDT... AT 314 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 8 MILES WEST OF MACCLENNY...OR ABOUT 17 MILES NORTH OF RAIFORD...MOVING NORTHEAST AT 20 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND TAYLOR AND MACCLENNY THROUGH 345 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. ZAPPE
Special weather statement, Jun 12, 3:24 PM EDT, 15 minutes before
FLZ024-025-122015- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 324 PM EDT THU JUN 12 2003 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR EASTERN PORTIONS OF DUVAL AND NASSAU COUNTIES FOR SMALL HAIL AND GUSTY WINDS OF 45 TO 55 MPH VALID UNTIL 415 PM EDT... AT 324 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CENTERED 10 MILES SOUTH OF YULEE...OR ABOUT 12 MILES SOUTHWEST OF FERNANDINA BEACH...MOVING NORTHEAST AT 15 MPH. THIS WILL ALSO AFFECT AREAS AROUND MAYPORT AND LITTLE TALBOT ISLAND THROUGH 415 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. DEESE
Special weather statement, Jun 12, 3:32 PM EDT, 7 minutes before
FLZ024-025-122015- SPECIAL WEATHER STATEMENT...CORRECTED FOR HEADER NATIONAL WEATHER SERVICE JACKSONVILLE FL 332 PM EDT THU JUN 12 2003 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR EASTERN PORTIONS OF DUVAL AND NASSAU COUNTIES FOR SMALL HAIL AND GUSTY WINDS OF 45 TO 55 MPH VALID UNTIL 415 PM EDT... AT 324 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CENTERED 10 MILES SOUTH OF YULEE...OR ABOUT 12 MILES SOUTHWEST OF FERNANDINA BEACH...MOVING NORTHEAST AT 15 MPH. THIS WILL ALSO AFFECT AREAS AROUND MAYPORT AND LITTLE TALBOT ISLAND THROUGH 415 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. DEESE/ZAPPE
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 1:36 PM EDT | Severe Thunderstorm Warning | JAX | Alachua, Columbia | 39 min |
| Jun 12, 2:29 PM EDT | Severe Thunderstorm Warning | JAX | Columbia | 46 min |
| Jun 12, 3:42 PM EDT | Special Marine Warning | JAX | 63 min | |
| Jun 12, 5:22 PM EDT | Severe Thunderstorm Warning | JAX | Brantley, Camden | 38 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2003Every severe thunderstorm warning 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.