Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 239, NWS Jacksonville, FL

June 24, 2008Flagler County, Putnam County, Saint Johns County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 24, 2008, 6:53 PM EDT for Flagler County, Putnam County, Saint Johns County, Florida. It was in force for 37 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 24, 2008, 6:53 PM EDT (22:53 UTC)
Expired
Jun 24, 2008, 7:30 PM EDT
In force
37 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Flagler County, FL, Putnam County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 94 km from the middle of the area, began a volume at 22:55 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 10.9 hours before the alert went out and 164 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, Cape Canaveral, FL at 12:00Z on 2008-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1090 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, Cape Canaveral, FL at 12:00Z on 2008-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.1939Sfc1 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
1090 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
880 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
-9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 24, 3:50 PM EDT, 3 hours 3 minutes earlier.

Area forecast discussion, Jun 24, 3:50 PM EDT, 3 hours 3 minutes before
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Hazardous weather outlook, Jun 24, 4:31 AM EDT, 14 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
431 AM EDT TUE JUN 24 2008

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-250830-
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-
431 AM EDT TUE JUN 24 2008

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

.DAY ONE...TODAY AND TONIGHT...

A FEW THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON...MAINLY ACROSS
NORTH CENTRAL FLORIDA SOUTH OF INTERSTATE 10. GUSTY WINDS...HEAVY
RAIN AND FREQUENT LIGHTNING WILL BE POSSIBLE FROM ANY THUNDERSTORM
THAT DEVELOPS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE ANTICIPATED
EACH DAY THROUGH NEXT MONDAY. ANY THUNDERSTORM THAT DEVELOPS WILL
BE CAPABLE OF PRODUCING GUSTY WINDS...HEAVY RAIN AND FREQUENT
LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

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

WOLF

In the hours before

Special weather statement, Jun 24, 4:40 PM EDT, 2 hours 13 minutes before
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Special weather statement, Jun 24, 4:58 PM EDT, 1 hour 55 minutes before
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Local storm report, Jun 24, 5:15 PM EDT, 1 hour 38 minutes before
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Special weather statement, Jun 24, 5:43 PM EDT, 1 hour 10 minutes before
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Special weather statement, Jun 24, 5:45 PM EDT, 1 hour 8 minutes before
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Special weather statement, Jun 24, 6:28 PM EDT, 25 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 4:43 PM EDTSevere Thunderstorm WarningJAXClay47 min
Jun 24, 5:06 PM EDTSevere Thunderstorm WarningJAXDuval, Saint Johns39 min
Jun 24, 6:48 PM EDTAreal Flood AdvisoryJAXPutnam, Saint Johns87 min

Nearby

Severe Thunderstorm Warnings in Florida, 2008Every severe thunderstorm warning in 2008

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.