Alert archive / Florida / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 63, NWS Jacksonville, FL

May 8, 2006Duval County, Saint Johns County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at May 8, 2006, 5:44 PM EDT for Duval County, Saint Johns County, Florida. It was in force for 31 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
May 8, 2006, 5:44 PM EDT (21:44 UTC)
Expired
May 8, 2006, 6:15 PM EDT
In force
31 min
Issued by
NWS Jacksonville, FL
Area
Counties, with a storm outline in the text

Counties Duval County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 43 km from the middle of the area, began a volume at 21:46 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 9.7 hours before the alert went out and 268 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, Tallahassee Rgnl, FL at 12:00Z on 2006-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1250 joules per kilogram.LCLEL10008507005003002001001 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, Tallahassee Rgnl, FL at 12:00Z on 2006-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.1939587897Sfc1 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
1250 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
475 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.0

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 May 8, 2:04 PM EDT, 3 hours 40 minutes earlier.

Area forecast discussion, May 8, 2:04 PM EDT, 3 hours 40 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
204 PM EDT MON MAY 8 2006

...SLIGHT RISK OF SEVERE STORMS THIS AFTERNOON...

.SHORT TERM...STORMS HAVE DEVELOPED EARLY TODAY ALONG PRESSURE
TROUGH STRETCHING THROUGH THE FLORIDA/GEORGIA STATE LINE.
ALOFT...RUC IS INDICATING A BROAD AREA OF DIFFERENTIAL PVA
STRENGTHENING OVER THE AREA AND LIKELY PROVIDING IMPETUS FOR
STORMS TO REACH LEVEL OF FREE CONVECTION. ACCORDING TO THE
SOUNDING...AREAS ABOVE THIS POINT HAVE PLENTY OF ENERGY FOR
CONTINUED STORM DEVELOPMENT THROUGHOUT THE AFTERNOON HOURS AND INTO
THE EVENING. MAIN CONCERN WILL BE THE HAIL POTENTIAL AND TO A
LESSER EXTENT DAMAGING WINDS. STRONG WESTERLY FLOW ALOFT SHOULD
ALLOW FOR SUFFICIENT TILT TO KEEP HAIL SEPARATED FROM SATURATED
UPDRAFT. IN ADDITION...MODERATE LAPSE RATES IN THE HAIL GROWTH
ZONE SHOULD LEAD TO SCATTERED STRONG STORMS AND ISOLATED SEVERE.
LIMITING FACTOR THUS FAR HAS BEEN GETTING THE UPDRAFT WELL ABOVE
THE FREEZING LEVEL BUT FEEL POTENTIAL WILL INCREASE AS INSTABILITY
INCREASES THIS AFTERNOON.

FOR TONIGHT...MODEL DISPARITIES CONTINUE AS NOTED BY PREVIOUS
FORECASTER. FOR THE SHORT TERM...WILL MAINLY GO WITH RADAR TRENDS
FOR THE 6 HOUR POPS AND THEN TAPER TO LOW END SCATTERED FOR THE
REMAINDER OF THE NIGHT. THIS IS A COMPROMISE BETWEEN THE GFS
WHICH SENDS THE MAJORITY OF THE MOISTURE SOUTH OF THE AREA WHILE
THE NAM DEVELOPS A SECONDARY LOW OFF THE FLORIDA COAST WITH A
SECONDARY MOISTURE SURGE SOUTHWARD.

FOR TUESDAY...AGAIN A BLEND GENERALLY USED WITH PRESSURE TROUGH
BECOMING ORIENTED NORTH SOUTH ALONG THE SPINE OF THE PENINSULA.
HAVE GONE WITH SCATTERED POPS FOR MOST AREAS WITH AN EMPHASIS ON
THE LATE MORNING TO EARLY AFTERNOON TIME PERIOD.

AS MENTIONED IN PREVIOUS DISCUSSION...DYNAMICS TAKE A RESPITE ON
WEDNESDAY AND WITH MID LEVEL MOISTURE...SHOULD SEE ONE OF OUR
FIRST PURELY SEABREEZE DRIVEN CONVECTION DAYS. COLLISION LOOKS TO
BE RIGHT ALONG THE I-75 CORRIDOR AND WITH LOWER PWATS...LOW END
SCATTERED POPS SHOULD SUFFICE.

LARGE SCALE MID-LATITUDE TROUGH OVER THE MIDWEST BEGINS A PUSH
SOUTH AND EAST BY THURSDAY. ALTHOUGH PREVIOUS SUCH FRONTS HAVE
FAILED TO MATERIALIZE MUCH IN THE WAY OF RAINFALL...THIS ONE LOOKS
TO HAVE A LITTLE MORE MOISTURE AVAILABILITY. WILL GO WITH
SCATTERED POPS FOR NOW WITH THE PASSAGE WHICH MAY NEED TO BE
TWEAKED UP WITH LATER SHIFTS.

.LONG TERM...FRONT PUSHES SOUTH OF THE AREA BY FRIDAY AND VERY GOOD
AGREEMENT BETWEEN THE GFS AND DGEX WITH A SIGNIFICANT DRYING TREND
THROUGH THE WEEKEND.

&&

.MARINE...NO HEADLINES THROUGH THE END OF THE WEEK. EARLY TUESDAY
MORNING A NELY SURGE IS EXPECTED TO MOVE INTO THE WATERS AND WILL GO
WITH 15 KT WINDS. BY WEDNESDAY WINDS WILL SHIFT TO SE THEN VEER TO
SW THURSDAY AS NEXT FRONT APPROACHES.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  64  81  64  86 /  40  30  20  40
SSI  65  78  65  82 /  50  30  20  20
JAX  65  81  64  85 /  60  40  30  20
SGJ  67  79  66  83 /  60  40  30  20
GNV  66  86  64  88 /  50  40  30  30
OCF  67  87  65  89 /  40  40  30  30

&&

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

PUBLIC...DEESE
MARINE/FIRE WX...TRABERT
Hazardous weather outlook, May 8, 2:00 PM EDT, 3 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
200 PM EDT MON MAY 8 2006

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-091000-
HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-
ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-COFFEE-
JEFF DAVIS-BACON-APPLING-WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-
INLAND GLYNN-COASTAL GLYNN-ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-
COASTAL CAMDEN-
200 PM EDT MON MAY 8 2006

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

...SLIGHT RISK OF SEVERE WEATHER...

A STATIONARY FRONT JUST NORTH OF THE AREA...WEAK UPPER LEVEL
DISTURBANCES...AND AFTERNOON SEABREEZES WILL INTERACT TO PRODUCE
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE AREA
TODAY. THE AREAS MOST LIKELY TO RECEIVE THUNDERSTORM ACTIVITY WILL
BE THOSE ALONG THE FLORIDA AND GEORGIA BORDER WITH THIS AXIS
SHIFTING SOUTHWARD THROUGH THE EVENING HOURS. SCATTERED STORMS WILL
BECOME STRONG WITH WIND GUSTS TO 40 MPH AND SMALL HAIL AND ISOLATED
SEVERE STORMS WILL BE POSSIBLE AS WELL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE THROUGH
THURSDAY...MAINLY DURING THE AFTERNOON AND EVENING HOURS. THE
GREATEST COVERAGE OF STORMS WILL BE THURSDAY AHEAD OF A COLD FRONT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME.

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

CARROLL/DEESE

In the hours before

Local storm report, May 8, 4:44 PM EDT, 1 hour before
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Local storm report, May 8, 4:47 PM EDT, 57 minutes before
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Special weather statement, May 8, 4:52 PM EDT, 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
452 PM EDT MON MAY 8 2006

FLZ032-082130-
CLAY-
452 PM EDT MON MAY 8 2006

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR CLAY COUNTY FOR
STRONG WINDS AND SMALL HAIL VALID UNTIL 530 PM EDT...

AT 452 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM
6 MILES NORTH OF MIDDLEBURG TO 11 MILES SOUTH OF PENNEY FARMS...OR
ALONG A LINE EXTENDING FROM 9 MILES WEST OF LAKESIDE TO 14 MILES
NORTHEAST OF MELROSE...MOVING EAST AT 20 MPH. THIS CLUSTER OF STRONG
THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND MIDDLEBURG...ASBURY
LAKE...PENNEY FARMS...LAKESIDE...DOCTORS INLET...BELLAIR-MEADOWBROOK
TERRA...ORANGE PARK AND GREEN COVE SPRINGS THROUGH 530 PM EDT. HAIL
UP TO ONE HALF INCH IN DIAMETER AND GUSTY WINDS OF 45 TO 55 MPH CAN
BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE DIRECTLY AT 1-800-499-1594.

CAMP
Special weather statement, May 8, 5:25 PM EDT, 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
525 PM EDT MON MAY 8 2006

FLZ025-082215-
DUVAL-
525 PM EDT MON MAY 8 2006

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR EXTREME SOUTHERN
DUVAL COUNTY FOR STRONG WINDS...SMALL HAIL AND EXCESSIVE LIGHTNING
VALID UNTIL 615 PM EDT...

AT 525 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 8 MILES WEST OF BAYARD...OR ABOUT OVER
MANDARIN...MOVING EAST AT 25 MPH. THIS STRONG THUNDERSTORM WILL ALSO
AFFECT AREAS AROUND BAYARD THROUGH 615 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. HEAVY RAINFALL WILL PRODUCE PONDING OF WATER ON ROADWAYS AND
MINOR FLOODING OF LOW-LYING AREAS.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE DIRECTLY AT 1-800-499-1594.

ZAPPE
Special weather statement, May 8, 5:27 PM EDT, 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
527 PM EDT MON MAY 8 2006

GAZ151-152-082215-
BRANTLEY-PIERCE-
527 PM EDT MON MAY 8 2006

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR WESTERN BRANTLEY
AND SOUTHEAST PIERCE COUNTIES FOR SMALL HAIL VALID UNTIL 615 PM
EDT...

AT 527 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CENTERED 8 MILES NORTH OF HOBOKEN...OR ABOUT 5 MILES
EAST OF BLACKSHEAR...MOVING SOUTHEAST AT 10 MPH. THIS THUNDERSTORM
WILL ALSO AFFECT AREAS AROUND HOBOKEN THROUGH 615 PM EDT. HAIL UP TO
ONE HALF INCH IN DIAMETER AND GUSTY WINDS OF 45 TO 55 MPH CAN BE
EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. HEAVY RAINFALL WILL
PRODUCE PONDING OF WATER ON ROADWAYS AND MINOR FLOODING OF LOW-LYING
AREAS.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE DIRECTLY AT 1-800-499-1594.

ZAPPE
Special weather statement, May 8, 5:35 PM EDT, 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
535 PM EDT MON MAY 8 2006

FLZ033-082215-
ST. JOHNS-
535 PM EDT MON MAY 8 2006

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR ST. JOHNS COUNTY
FOR STRONG WINDS AND SMALL HAIL VALID UNTIL 615 PM EDT...

AT 535 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER FRUIT COVE...MOVING EAST AT 25 MPH.
THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND SWITZERLAND...
FRUIT COVE...DURBIN...GUANA RIVER STATE PARK AND SOUTH PONTE VEDRA
BEACH THROUGH 615 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER AND
GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR
DAMAGE.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE DIRECTLY AT 1-800-499-1594.

CAMP

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 1:16 PM EDTSpecial Marine WarningJAX59 min
May 8, 1:27 PM EDTSevere Thunderstorm WarningJAXNassau33 min
May 8, 1:36 PM EDTSevere Thunderstorm WarningJAXDuval54 min
May 8, 2:09 PM EDTSpecial Marine WarningJAX66 min
May 8, 2:52 PM EDTSevere Thunderstorm WarningJAXNassau38 min
May 8, 3:33 PM EDTSpecial Marine WarningJAX57 min
May 8, 4:04 PM EDTSpecial Marine WarningJAX56 min
May 8, 4:55 PM EDTSpecial Marine WarningJAX50 min
May 8, 5:20 PM EDTSevere Thunderstorm WarningJAXClay15 min
May 8, 5:21 PM EDTSpecial Marine WarningJAX54 min
May 8, 5:42 PM EDTSpecial Marine WarningJAX63 min
May 8, 6:10 PM EDTSpecial Marine WarningJAX65 min
May 8, 6:15 PM EDTSevere Thunderstorm WarningJAXSuwannee45 min
May 8, 6:30 PM EDTSevere Thunderstorm WarningJAXSuwannee45 min
May 8, 3:25 PM EDTSevere Thunderstorm WarningJAXAtkinson35 min
May 8, 3:55 PM EDTSevere Thunderstorm WarningJAXWare32 min
May 8, 4:09 PM EDTSevere Thunderstorm WarningJAXBrantley28 min
May 8, 4:18 PM EDTSevere Thunderstorm WarningJAXGlynn42 min

Nearby

Severe Thunderstorm Warnings in Florida, 2006Every severe thunderstorm warning in 2006

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.