Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 87, NWS Jacksonville, FL

June 8, 2014Clay County, Duval County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 8, 2014, 2:23 PM EDT for Clay County, Duval County, Florida. It was in force for 52 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 8, 2014, 2:23 PM EDT (18:23 UTC)
Expired
Jun 8, 2014, 3:15 PM EDT
In force
52 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Clay County, FL, Duval County, FL

The radar

The Jacksonville radar (KJAX), 37 km from the middle of the area, began a volume at 18:26 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

Jacksonville, FL (KJAX), launched 12:00Z, 6.4 hours before the alert went out and 38 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 2014-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1201 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 2014-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
1201 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
673 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
54 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 8, 1:46 PM EDT, 37 minutes earlier.

Area forecast discussion, Jun 8, 1:46 PM EDT, 37 minutes before
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Hazardous weather outlook, Jun 8, 9:30 AM EDT, 4 hours 53 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
930 AM EDT SUN JUN 8 2014

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-
GAZ132>136-149>154-162>166-091000-
ALTAMAHA SOUND GA TO FERNANDINA BEACH FL OUT 20 NM-
FERNANDINA BEACH TO ST AUGUSTINE FL OUT 20 NM-
ST AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM-
ALTAMAHA SOUND GA TO FERNANDINA BEACH FL 20 NM TO 60 NM OFFSHORE-
FERNANDINA BEACH TO ST AUGUSTINE FL 20 NM TO 60 NM OFFSHORE-
ST AUGUSTINE TO FLAGLER BEACH FL 20 NM TO 60 NM OFFSHORE-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-
930 AM EDT SUN JUN 8 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA...
SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS.

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

THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE REGION THIS
AFTERNOON...AND LINGER INTO THE EVENING HOURS. A FEW STRONG STORMS
WILL BE POSSIBLE... PRODUCING GUSTY WINDS AND HEAVY DOWNPOURS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED TO DEVELOP EACH
DAY.

.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 WEATHER.GOV/JAX.

In the hours before

Special weather statement, Jun 8, 1:58 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 7, 8:08 PM EDTSpecial Weather StatementJAXSuwannee52 min
Jun 8, 10:04 AM EDTRiver Flood WarningJAXBaker, Nassau16 hr
Jun 8, 1:58 PM EDTSpecial Weather StatementJAXDuval, Nassau47 min
Jun 8, 3:12 PM EDTSpecial Weather StatementJAXClay33 min
Jun 8, 3:22 PM EDTSpecial Weather StatementJAXClay38 min
Jun 8, 3:23 PM EDTSpecial Weather StatementJAXLake52 min
Jun 8, 3:37 PM EDTSpecial Weather StatementJAXPutnam38 min
Jun 8, 3:51 PM EDTSpecial Weather StatementJAXBradford, Clay39 min
Jun 8, 3:56 PM EDTSevere Thunderstorm WarningJAXBradford, Clay49 min
Jun 8, 4:13 PM EDTSevere Thunderstorm WarningJAXPutnam35 min
Jun 8, 4:35 PM EDTSpecial Weather StatementJAXUnion25 min
Jun 8, 4:39 PM EDTSevere Thunderstorm WarningJAXMarion, Putnam51 min
Jun 8, 4:41 PM EDTSpecial Weather StatementJAXPutnam34 min
Jun 8, 4:58 PM EDTSpecial Weather StatementJAXAlachua32 min
Jun 8, 5:00 PM EDTSpecial Weather StatementJAXFlagler30 min
Jun 8, 5:02 PM EDTSpecial Weather StatementJAXUnion28 min
Jun 8, 5:24 PM EDTSpecial Weather StatementJAXLake36 min
Jun 8, 5:26 PM EDTSpecial Weather StatementJAXUnion34 min
Jun 8, 5:38 PM EDTSpecial Weather StatementJAXAlachua37 min
Jun 8, 5:39 PM EDTSpecial Weather StatementJAXMarion36 min
Jun 8, 5:58 PM EDTSevere Thunderstorm WarningJAXAlachua, Marion27 min
Jun 8, 6:00 PM EDTSpecial Weather StatementJAXMarion45 min
Jun 8, 6:05 PM EDTSpecial Weather StatementJAXHamilton40 min
Jun 8, 6:11 PM EDTSpecial Weather StatementJAXColumbia34 min
Jun 8, 6:40 PM EDTSpecial Weather StatementJAXNassau35 min
Jun 8, 6:42 PM EDTSpecial Weather StatementJAXSuwannee48 min
Jun 8, 6:43 PM EDTSpecial Weather StatementJAXColumbia32 min
Jun 8, 6:45 PM EDTSpecial Weather StatementJAXMarion30 min
Jun 8, 6:58 PM EDTSpecial Weather StatementJAXUnion32 min
Jun 8, 7:07 PM EDTSevere Thunderstorm WarningJAXSuwannee38 min
Jun 8, 7:20 PM EDTSpecial Weather StatementJAXGilchrist55 min
Jun 8, 7:29 PM EDTSpecial Weather StatementJAXUnion46 min
Jun 8, 7:32 PM EDTSevere Thunderstorm WarningJAXAlachua, Columbia, Gilchrist43 min
Jun 7, 10:16 PM EDTSpecial Weather StatementJAXAppling, Wayne59 min
Jun 8, 5:16 AM EDTSpecial Weather StatementJAXAtkinson, Coffee, Jeff Davis44 min
Jun 8, 5:54 AM EDTSpecial Weather StatementJAXAppling, Bacon, Jeff Davis36 min
Jun 8, 5:56 PM EDTSpecial Weather StatementJAXCharlton34 min
Jun 8, 6:08 PM EDTSpecial Weather StatementJAXWare37 min
Jun 8, 6:36 PM EDTSpecial Weather StatementJAXAtkinson24 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014Every severe thunderstorm warning in 2014

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.