Alert archive / Florida / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 100, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 25, 2003, 4:31 PM EDT for Flagler County, Florida. It was in force for 29 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
- Apr 25, 2003, 4:31 PM EDT (20:31 UTC)
- Expired
- Apr 25, 2003, 5:00 PM EDT
- In force
- 29 min
- Issued by
- NWS Jacksonville, FL
- Area
- Counties, with a storm outline in the text
County Flagler County, FL
The radar
The Jacksonville radar (KJAX), 119 km from the middle of the area, began a volume at 20:31 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 25, 2:15 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 8.5 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.
- Mixed-layer CAPE
- 109 J/kg
- Mixed-layer CIN
- -260 J/kg
- Mixed-layer LCL
- 1059 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Apr 25, 2:30 PM EDT, 2 hours 1 minute earlier.
Area forecast discussion, Apr 25, 2:30 PM EDT, 2 hours 1 minute before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
230 PM EDT FRI APR 25 2003
...SHORT TERM...
STRONG TO SEVERE THUNDERSTORMS ONGOING AT THIS HOUR AS LINE
PROGRESSES THROUGH THE WEST CENTRAL PORTION OF THE CWA. SPLIT JET
STRUCTURE RESPONSIBLE FOR A GOOD PORTION OF THE CONVECTION AS UPPER
DIVERGENCE IS MAXIMIZED OVER NORTH FLORIDA AND SOUTH GEORGIA.
INSTABILITY INCREASING IN THE WARM SECTOR...EVIDENCED BY MARKED
INCREASE IN CONVECTION AHEAD OF THE LINE WHERE A FEW CELLS HAVE
ALREADY GONE SEVERE. LOW LEVEL JET CERTAINLY HAVING AN IMPACT ON
GULF COAST STORMS AS BOW STRUCTURE IS MOVING LARGELY SOUTHEAST.
THIS WOULD FAVOR MESO-ETA SOLUTION OF A SPLIT IN ACTIVITY OVER THE
EASTERN PORTION OF THE CWA. HOWEVER...850 WINDS INCREASING ALONG
WITH INCREASING INSTABILITY ALONG THE COAST SHOULD FAVOR ADDITIONAL
COASTAL DEVELOPMENT THROUGH LATE THIS AFTERNOON.
...TONIGHT...
MODELS ARE IN RELATIVELY GOOD AGREEMENT DESPITE COMPLEX PATTERN FOR
TONIGHT. WILL MAINTAIN HIGH POPS FOR THE EVENING PERIOD OVER THE
FLORIDA PORTION AND WILL BASE GEORGIA FORECAST ON RADAR TRENDS AT
ISSUANCE TIME. A GENERAL DECREASE IN ACTIVITY IS EXPECTED OVERNIGHT
TONIGHT AS MAIN SQUALL LINE SHIFTS EAST OVER THE ATLANTIC. DEEP
LAYER MOISTURE SUBSIDES...ESPECIALLY OVER GEORGIA PORTION...BUT
ENOUGH LOW LEVEL MOISTURE REMAINS TO MAINTAIN SMALL POP MENTION
OVERNIGHT. THIS IS FURTHER SUPPORTED BY ANOTHER IN A SERIES OF
ENERGY SPOKES ROTATING AROUND MAIN UPPER LOW OVER THE TENNESSEE
VALLEY.
...SATURDAY...
MOST OF GEORGIA WILL BE PRECIP FREE FOR SATURDAY AS TROUGH AXIS
SHIFTS EAST OF THE AREA. STILL COULD SEE SOME MAINLY MORNING SHOWERS
AND THUNDERSTORMS OVER THE SOUTHERN CWA AS CAPES ABOVE 1500 ARE
MAINTAINED THROUGH 18Z. PWATS BY THIS TIME WILL HAVE DROPPED TO
AROUND AN INCH AND A QUARTER LIMITING COVERAGE TO LOW END SCATTERED
AT BEST. WITH SOUTHWEST WINDS CONTINUING THROUGH MUCH OF THE DAY...
LOCATIONS FROM JAX SOUTHWARD WILL HAVE THE MERCURY CLIMB INTO THE
LOW TO MID 80S DESPITE CLOUD COVER. WILL HAVE TO WATCH CAREFULLY
AREAS FROM MARION TO PUTNAM TO FLAGLER WHERE WARM TEMPS WILL HAVE A
CHANCE TO INTERACT WITH RESIDUAL LOW LEVEL MOISTURE AND UPPER
ENERGY.
...EXTENDED...
GENERALLY DRY CONDITIONS EXPECTED THROUGH THE FIRST PART OF THE WORK
WEEK. WILL HAVE TO WATCH FOR POTENTIAL COASTAL SHOWERS ACTIVITY TO
THE SOUTH STARTING ON MONDAY BUT WILL LEAVE A DRY FORECAST FOR NOW.
AS HIGH SHIFTS TO THE EAST INTO THE ATLANTIC...WINDS VEER TO THE
SOUTH AS TEMPERATURES WARM INTO THE MID 80S. CLOUD COVER MAY DAMPEN
HIGHS A BIT...BUT SOUTHWEST FLOW BY THURSDAY SHOULD PRODUCE WARM
AND MUGGY CONDITIONS FOR ALL BUT THE IMMEDIATE COAST. WITH THE
INCREASING MOISTURE WILL BE THE CHANCE FOR AFTERNOON SHOWERS AND
THUNDERSTORMS WITH THE EASTERN SIDE OF THE PENINSULA FAVORED UNDER
SOUTHWEST FLOW.
...MARINE...
WINDS CONSISTENTLY ABOVE FLAG CRITERIA TONIGHT IN ALL MODELS. WILL
MAINTAIN SCA FOR BOTH LEGS OVERNIGHT TONIGHT. WINDS GRADUALLY
DECREASE THROUGH THE AFTERNOON ON SATURDAY BUT AT LEAST SCEC
CONDITIONS WILL BE FELT THROUGH LATE AFTERNOON. CONDITIONS BECOME
RATHER TRANQUIL FOR SUNDAY BEFORE LOW LEVEL EASTERLY FLOW SETS UP
FOR THE BEGINNING OF THE WORK WEEK.
FCSTID = 23
AMG 64 82 59 82 / 30 20 0 0
SSI 64 82 62 81 / 70 30 30 0
JAX 66 85 61 82 / 70 30 30 0
SGJ 67 85 64 82 / 70 30 30 10
GNV 66 85 61 85 / 70 30 30 10
OCF 66 85 61 85 / 70 30 30 10
.JAX WATCHES/WARNINGS/ADVISORIES...
FL...SEVERE THUNDERSTORM WATCH FOR ALL COUNTIES THROUGH THIS EVENING.
...SCA FERNANDINA BEACH TO FLAGLER BEACH OUT 60 NM.
GA...SEVERE THUNDERSTORM WATCH FOR CHARLTON...CAMDEN...AND GLYNN
THROUGH 5PM.
...SCA ALTAMAHA SOUND TO FERNANDINA BEACH OUT 60 NM.
DEESE/ENYEDIHazardous weather outlook, Apr 25, 2:48 PM EDT, 1 hour 43 minutes before
FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-252300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 248 PM EDT FRI APR 25 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. .DAY ONE...THIS AFTERNOON AND TONIGHT... ...SEVERE THUNDERSTORM WATCH FOR EXTREME SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS AND PORTIONS OF NORTH FLORIDA UNTIL 5 PM... ...SEVERE THUNDERSTORM WATCH FOR NORTHEAST FLORIDA UNTIL 7 PM... ...SEVERE THUNDERSTORM WATCH FOR MOST OF INTERIOR GEORGIA AND THE NORTHERN SUWANNEE VALLEY HAS BEEN CANCELED... STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS THE AREA THIS AFTERNOON EVENING. SOME OF THESE STORMS WILL REACH SEVERE LIMITS. THE PRIMARY HAZARDS WILL BE WIND GUSTS TO 60 MPH...HAIL UP TO NICKEL SIZE...AND PERIODS OF TORRENTIAL RAINFALL. ISOLATED TORNADOES ARE ALSO POSSIBLE. ACTIVITY WILL MOVE OFF THE COAST THROUGH THE AFTERNOON AND EVENING HOURS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... SCATTERED THUNDERSTORMS ARE EXPECTED SATURDAY AFTERNOON MAINLY OVER NORTHEAST FLORIDA AND ALONG THE GEORGIA COAST. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTERS ACTIVATION IS REQUESTED IN THE WATCH AREA. ELSEWHERE... 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. ABE/JD/SEC
In the hours before
Special weather statement, Apr 25, 2:39 PM EDT, 1 hour 52 minutes before
FLZ040-251915- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 239 PM EDT FRI APR 25 2003 ...STRONG THUNDERSTORM WILL IMPACT NORTHEAST MARION COUNTY THROUGH 315 PM EDT... AT 239 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 4 MILES SOUTHWEST OF BURBANK...OR ABOUT 7 MILES NORTHEAST OF OCALA...MOVING NORTHEAST AT 20 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND BURBANK...FORT MCCOY... SALT SPRINGS...ORANGE SPRINGS AND HOG VALLEY THROUGH 315 PM EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING CAN BE EXPECTED. UNPLUG COMPUTERS...TELEVISION SETS...AND OTHER HOME APPLIANCES AS THEY ARE SUSCEPTIBLE TO POWER SURGES AND MAY BE DAMAGED BY NEARBY LIGHTNING STRIKES. ZAPPE
Special weather statement, Apr 25, 2:41 PM EDT, 1 hour 50 minutes before
FLZ020-021-GAZ132>136-149>152-162-163-252100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 241 PM EDT FRI APR 25 2003 ...TORNADO WATCH NO LONGER IN EFFECT FOR APPLING...ATKINSON... BACON...BRANTLEY...CLINCH...COFFEE...ECHOLS...HAMILTON...JEFF DAVIS...PIERCE...SUWANNEE...WARE... AND WAYNE COUNTIES... AT 230 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A LINE OF STRONG TO SEVERE THUNDERSTORMS STRETCHING FROM NEAR BRUNSWICK GEORGIA TO TRENTON FLORIDA. AREAS NORTHWEST OF THIS LINE WERE EXPERIENCING MAINLY LIGHT TO MODERATE RAIN. ALTHOUGH ISOLATED THUNDERSTORMS ARE STILL POSSIBLE IN THE RAIN AREA...THE RISK OF SEVERE WEATHER HAS GREATLY DIMINISHED. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION. CARROLL
Special weather statement, Apr 25, 3:08 PM EDT, 1 hour 23 minutes before
FLZ032-033-251945- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 308 PM EDT FRI APR 25 2003 ...STRONG THUNDERSTORMS WILL IMPACT CLAY AND ST. JOHNS COUNTIES THROUGH 345 PM... AT 308 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 4 MILES NORTHWEST OF DOCTORS INLET...OR ABOUT 7 MILES WEST OF ORANGE PARK...MOVING EAST AT 35 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND DOCTORS INLET... BELLAIR-MEADOWBROOK TERRA...ASBURY LAKE...ORANGE PARK... SWITZERLAND...FRUIT COVE...DURBIN AND GUANA RIVER STATE PARK 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, Apr 25, 3:42 PM EDT, 49 minutes before
FLZ038-252015- SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE JACKSONVILLE FL 342 PM EDT FRI APR 25 2003 ...STRONG THUNDERSTORMS WILL IMPACT FLAGLER COUNTY THROUGH 415 PM... AT 342 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 19 MILES WEST OF MARINELAND...OR ABOUT 6 MILES NORTH OF ANDALUSIA...MOVING NORTHEAST AT 25 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND MARINELAND 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. SHASHY
Special weather statement, Apr 25, 3:53 PM EDT, 38 minutes before
FLZ022-023-030-035-GAZ153-154-164>166-252008- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 353 PM EDT FRI APR 25 2003 ...SEVERE THUNDERSTORM WATCH #164 NO LONGER IN EFFECT FOR GILCHRIST...COLUMBIA...UNION...BAKER...CHARLTON...GLYNN AND CAMDEN COUNTIES AT 345 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR NO LONGER SHOWED SEVERE WEATHER IN THESE COUNTIES...THE RISK FOR SEVERE WEATHER HAS ENDED. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION. ZAPPE
Special weather statement, Apr 25, 3:55 PM EDT, 36 minutes before
FLZ022>024-030-035-GAZ153-154-164>166-252010- SPECIAL WEATHER STATEMENT...CORRECTED TO INCLUDE NASSAU COUNTY... NATIONAL WEATHER SERVICE JACKSONVILLE FL 355 PM EDT FRI APR 25 2003 ...SEVERE THUNDERSTORM WATCH #164 NO LONGER IN EFFECT FOR GILCHRIST...COLUMBIA...UNION...BAKER...CHARLTON...NASSAU...GLYNN AND CAMDEN COUNTIES AT 345 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR NO LONGER SHOWED SEVERE WEATHER IN THESE COUNTIES...THE RISK FOR SEVERE WEATHER HAS ENDED. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION. ZAPPE
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 12:27 PM EDT | Severe Thunderstorm Warning | JAX | Columbia | 48 min |
| Apr 25, 2:24 PM EDT | Severe Thunderstorm Warning | JAX | Union | 51 min |
| Apr 25, 2:33 PM EDT | Severe Thunderstorm Warning | JAX | Baker | 42 min |
| Apr 25, 2:49 PM EDT | Severe Thunderstorm Warning | JAX | Duval, Nassau | 41 min |
| Apr 25, 3:03 PM EDT | Severe Thunderstorm Warning | JAX | Marion, Putnam | 42 min |
| Apr 25, 3:13 PM EDT | Tornado Warning | JAX | Alachua | 32 min |
| Apr 25, 3:18 PM EDT | Special Marine Warning | JAX | 87 min | |
| Apr 25, 3:31 PM EDT | Severe Thunderstorm Warning | JAX | Duval | 29 min |
| Apr 25, 3:45 PM EDT | Special Marine Warning | JAX | 90 min | |
| Apr 25, 3:48 PM EDT | Severe Thunderstorm Warning | JAX | Flagler, Putnam, Saint Johns | 42 min |
| Apr 25, 3:53 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 22 min |
| Apr 25, 4:49 PM EDT | Special Marine Warning | JAX | 41 min | |
| Apr 25, 11:59 AM EDT | Severe Thunderstorm Warning | JAX | Coffee | 46 min |
| Apr 25, 1:00 PM EDT | Tornado Warning | JAX | Brantley | 45 min |
| Apr 25, 1:09 PM EDT | Severe Thunderstorm Warning | JAX | Charlton | 51 min |
| Apr 25, 1:45 PM EDT | Severe Thunderstorm Warning | JAX | Glynn | 45 min |
| Apr 25, 1:58 PM EDT | Tornado Warning | JAX | Glynn | 32 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; radar from the NEXRAD Level II archive.