Alert archive / Florida / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 222, NWS Jacksonville, FL

July 24, 2003Saint Johns County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 24, 2003, 3:55 PM EDT for Saint Johns County, Florida. It was in force for 35 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
Jul 24, 2003, 3:55 PM EDT (19:55 UTC)
Expired
Jul 24, 2003, 4:30 PM EDT
In force
35 min
Issued by
NWS Jacksonville, FL
Area
Counties, with a storm outline in the text

County Saint Johns County, FL

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 7.9 hours before the alert went out and 71 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, Jacksonville, FL at 12:00Z on 2003-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3221 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, Jacksonville, FL at 12:00Z on 2003-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.193958Sfc1 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
3221 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
446 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.7

Open this sounding in Storm Lab

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 Jul 24, 2:45 PM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, Jul 24, 2:45 PM EDT, 1 hour 10 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
245 PM EDT THU JUL 24 2003

BUSY AFTERNOON SO WILL BE QUICK. LAST DAY OF DEEP SOUTHWESTERLY FLOW
COMING TO A CLOSE WITH PLENTY OF CONVECTION ONGOING. NEXT WX PROBLEM
WILL BE NORTHERN EXTENT OF TROPICAL WAVE MOVING ACROSS SOUTH
FLORIDA. PREFER AVN HANDLING OF WAVE WITH MOISTURE LIFTING ACROSS
SOUTHERN HALF OF CWA ON FRIDAY. THUS WILL CONTINUE WITH GOOD CHANCE
POPS SOUTH TO SCATTERED NORTH. DEEP EAST TO SOUTHEAST FLOW FOR
SATURDAY AND SUNDAY AS RIDGE AXIS SHIFTS TO THE NORTH. 30-40 POPS
LOOK GOOD FOR THESE DAYS. BY MONDAY RIDGE AXIS BEGINS TO SHIFT SOUTH
AGAIN AS PERSISTENT EAST COAST TROUGH BUILDS BACK IN. SOUTHWESTERLY
FLOW TO COMMENCE BY TUESDAY. WILL NOT MAKE SIGNIFICANT CHANGES TO
EXTENDED AS SCATTERED POPS STILL LOOK GOOD.

MARINE...NO HEADLINES EXPECTED THROUGH NEXT SEVERAL DAYS AS
SOUTH/SOUTHEAST FLOW DEVELOPS.

FIRE WX...NO CONCERNS.

.PRELIMINARY POINT TEMPS/POPS...

AMG 71 90 72 91 / 30 40 20 30
SSI 74 85 75 85 / 40 40 20 30
JAX 73 88 74 89 / 40 50 30 30
SGJ 75 85 75 85 / 40 50 30 30
GNV 72 89 73 91 / 40 50 30 40
OCF 72 89 73 90 / 40 50 30 40

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GA...NONE.

CAMP/SHASHY
Hazardous weather outlook, Jul 24, 12:10 PM EDT, 3 hours 45 minutes before
FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-242300-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1210 PM EDT THU JUL 24 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST
GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT...
SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER THE AREA
THIS AFTERNOON...SPREADING FROM WEST TO EAST.  THESE STORMS WILL
LIKELY PRODUCE STRONG GUSTY WINDS OF 30 TO 40 MPH...FREQUENT
LIGHTNING... AND LOCALLY VERY HEAVY RAINFALL.  MOVEMENT OF THE
STORMS WILL BE TO THE NORTHEAST AT AROUND 20 MPH.

PORTIONS OF SOUTHEAST GEORGIA HAVE RECEIVED MORE THAN 3 INCHES OF
RAIN DURING THE PAST 24 TO 36 HOURS. WITH THE GROUND SATURATED...ANY
ADDITIONAL HEAVY RAINFALL MAY CAUSE FLOODING IN LOW LYING AND POOR
DRAINAGE AREAS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...
SCATTERED THUNDERSTORMS ARE EXPECTED EACH DAY DURING THE AFTERNOON
AND EVENING HOURS.

OTHERWISE...NO OTHER HAZARDOUS WEATHER CONDITIONS ARE EXPECTED AT
THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.  SPOTTERS ARE
REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED FOR YOUR LOCAL
AREA.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
JACKSONVILLE WEBSITE ON THE INTERNET AT WWW.SRH.NOAA.GOV/JAX.

CAMP

In the hours before

Special weather statement, Jul 24, 2:07 PM EDT, 1 hour 48 minutes before
FLZ040-241830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
207 PM EDT THU JUL 24 2003

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR MARION COUNTY
FOR STRONG THUNDERSTORM WINDS AND HAIL VALID UNTIL 230 PM...

AT 207 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 4 MILES SOUTH OF LOWELL...OR
ABOUT 7 MILES NORTH OF OCALA...MOVING EAST AT 15 TO 20 MPH. THIS
CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND OCALA
...LOWELL...ANTHONY...SPARR...CITRA...HOG VALLEY AND FORT MCCOY
THROUGH 230 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE
CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 40 TO 50 MPH CAN BE
EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

SHASHY
Special weather statement, Jul 24, 2:13 PM EDT, 1 hour 42 minutes before
GAZ166-241845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
213 PM EDT THU JUL 24 2003

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR CAMDEN COUNTY
FOR STRONG THUNDERSTORM WINDS VALID UNTIL 245 PM...

AT 213 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 9 MILES SOUTHWEST OF HIGH
POINT...OR ABOUT 3 MILES NORTH OF KINGS BAY BASE...MOVING NORTHEAST
AT 20 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT
AREAS AROUND HIGH POINT THROUGH 245 PM EDT. HAIL UP TO ONE HALF INCH
IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF
35 TO 40 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

SHASHY
Special weather statement, Jul 24, 2:56 PM EDT, 59 minutes before
FLZ032-033-241945-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
256 PM EDT THU JUL 24 2003

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR ST JOHNS AND
CLAY COUNTIES FOR STRONG THUNDERSTORM WINDS AND POSSIBLY SMALL HAIL
VALID UNTIL 345 PM...

AT 256 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 4 MILES EAST OF GREEN COVE
SPRINGS...OR ABOUT 7 MILES SOUTH OF FRUIT COVE...MOVING NORTHEAST AT
25 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS
AROUND SWITZERLAND...PICOLATA...GREEN COVE SPRINGS...FRUIT COVE...
DURBIN...SOUTH PONTE VEDRA BEACH...GUANA RIVER STATE PARK AND
SAWGRASS 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.

SHASHY
Local storm report, Jul 24, 3:04 PM EDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE, FL
304 PM EDT THU JUL 24 2003

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0255 PM    4 E YULEE                 FL   WIND DAMAGE
07/24/03   NASSAU                         POWER LINES DOWN ACROSS
                                          A1A AND BLACKROCK RD.
                                          REPORTED BY EMERGENCY
                                          MANAGEMENT

0255 PM    JACKSONVILLE SOUTHSIDE    FL   1.00 INCH HAIL
07/24/03   DUVAL                          KERNAN RD. REPORTED
                                          BY GENERAL PUBLIC

SANDRIK
Local storm report, Jul 24, 3:04 PM EDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT...UPDATED
NATIONAL WEATHER SERVICE JACKSONVILLE, FL
304 PM EDT THU JUL 24 2003

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0255 PM    4 E YULEE                 FL   WIND DAMAGE
07/24/03   NASSAU                         LARGE TREE DOWN
                                          ACROSS POWER LINES
                                          A1A AND BLACKROCK RD.
                                          REPORTED BY EMERGENCY
                                          MANAGEMENT

0255 PM    JACKSONVILLE SOUTHSIDE    FL   1.00 INCH HAIL
07/24/03   DUVAL                          KERNAN RD. REPORTED
                                          BY GENERAL PUBLIC

SANDRIK
Local storm report, Jul 24, 3:42 PM EDT, 13 minutes before
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The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 24, 1:21 PM EDTSevere Thunderstorm WarningJAXBaker24 min
Jul 24, 1:31 PM EDTSevere Thunderstorm WarningJAXBradford29 min
Jul 24, 2:22 PM EDTSpecial Marine WarningJAX113 min
Jul 24, 2:30 PM EDTSevere Thunderstorm WarningJAXNassau45 min
Jul 24, 2:46 PM EDTSevere Thunderstorm WarningJAXDuval44 min
Jul 24, 3:06 PM EDTTornado WarningJAXDuval24 min
Jul 24, 3:47 PM EDTSpecial Marine WarningJAX28 min
Jul 24, 4:47 PM EDTSpecial Marine WarningJAX73 min
Jul 24, 12:54 PM EDTSevere Thunderstorm WarningJAXClinch66 min
Jul 24, 1:43 PM EDTSevere Thunderstorm WarningJAXCharlton47 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.