Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 20, NWS Jacksonville, FL

February 23, 2014Flagler County, Putnam County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Feb 23, 2014, 2:15 PM EST for Flagler County, Putnam County, Florida. It was in force for 30 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
Feb 23, 2014, 2:15 PM EST (19:15 UTC)
Expired
Feb 23, 2014, 2:45 PM EST
In force
30 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Flagler County, FL, Putnam County, FL

The radar

The Jacksonville radar (KJAX), 107 km from the middle of the area, began a volume at 19:18 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, 7.3 hours before the alert went out and 155 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 2014-02-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 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 2014-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.19395878Sfc1 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
9 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1113 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
73 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 Feb 23, 1:40 PM EST, 35 minutes earlier.

Area forecast discussion, Feb 23, 1:40 PM EST, 35 minutes before
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Hazardous weather outlook, Feb 23, 10:05 AM EST, 4 hours 10 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1005 AM EST SUN FEB 23 2014

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-
GAZ132>136-149>154-162>166-241100-
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-
1005 AM EST SUN FEB 23 2014

...ISOLATED STRONG THUNDERSTORMS WITH HAIL POSSIBLE LATE MORNING
THROUGH THE AFTERNOON FOR NORTHEAST FLORIDA...

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

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

SCATTERED THUNDERSTORMS EMBEDDED IN THE WIDESPREAD SHOWER ACTIVITY
WILL SPREAD OVER THE AREA AS AN UPPER LEVEL DISTURBANCE MOVES EAST.
A FEW OF THE STORMS MAY CONTAIN HAIL ALONG WITH LOCALLY HEAVY
DOWNPOURS...WITH THE GREATEST IMPACT EXPECTED ACROSS THE SUWANNEE
RIVER VALLEY OF NORTHEAST FLORIDA LATE THIS MORNING THROUGH THE
EARLY AFTERNOON.

AREAS OF FOG WILL DEVELOP TONIGHT...AND MAY BECOME LOCALLY DENSE
AFTER MIDNIGHT. THE FOG WILL IMPACT THE ENTIRE AREA INCLUDING THE
NEARSHORE COASTAL WATERS.

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

STRONG COLD FRONTAL PASSAGE ON WEDNESDAY WILL PRODUCE WINDY
CONDITIONS WITH SMALL CRAFT ADVISORIES LIKELY ON THE COASTAL
WATERS AND POSSIBLE GALE FORCE WIND GUSTS.

.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.

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE IS CONSIDERING THE
DISCONTINUANCE...OR REDUCED ISSUANCE...OF THIS PRODUCT. PLEASE
FORWARD COMMENTARY ON THE HAZARDOUS WEATHER OUTLOOK PRODUCT TO
OUR METEOROLOGIST IN CHARGE...SCOTT CORDERO...AT
SCOTT.CORDERO@NOAA.GOV. THIS WILL IN NO WAY AFFECT NOAA WEATHER
RADIO...BUT ONLY PERTAINS TO THE HAZARDOUS WEATHER OUTLOOK
PRODUCT WHICH SUMMARIZES ADVISORIES...WATCHES...AND WARNINGS
WHICH ARE ALREADY IN EFFECT.

In the hours before

Special weather statement, Feb 23, 11:31 AM EST, 2 hours 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1131 AM EST SUN FEB 23 2014

FLZ035-231700-
GILCHRIST-
1131 AM EST SUN FEB 23 2014

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR GILCHRIST
COUNTY FOR SMALL HAIL AND EXCESSIVE LIGHTNING VALID UNTIL NOON EST...

AT 1131 AM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER TRENTON...MOVING EAST AT 35 MPH.
THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND TRENTON AND
BELL THROUGH NOON EST. HAIL UP TO THREE QUARTER INCH IN DIAMETER 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.

LAT...LON 2984 8284 2983 8267 2957 8266 2959 8279
      2960 8291
TIME...MOT...LOC 1631Z 260DEG 29KT 2960 8282

ZIBURA
Special weather statement, Feb 23, 11:55 AM EST, 2 hours 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1155 AM EST SUN FEB 23 2014

FLZ036-231730-
ALACHUA-
1155 AM EST SUN FEB 23 2014

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR WESTERN ALACHUA
COUNTY FOR SMALL HAIL AND EXCESSIVE LIGHTNING VALID UNTIL 1230 PM
EST...

AT 1155 AM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 6 MILES SOUTHWEST OF NEWBERRY...MOVING
EAST AT 35 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS
AROUND NEWBERRY THROUGH 1230 PM EST. HAIL UP TO THREE QUARTER INCH IN
DIAMETER 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.

LAT...LON 2975 8244 2956 8243 2955 8265 2976 8266
TIME...MOT...LOC 1655Z 263DEG 31KT 2959 8266

ZIBURA
Special weather statement, Feb 23, 12:50 PM EST, 1 hour 25 minutes before
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Local storm report, Feb 23, 1:04 PM EST, 1 hour 11 minutes before
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Special weather statement, Feb 23, 1:37 PM EST, 38 minutes before
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Special weather statement, Feb 23, 2:02 PM EST, 13 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 23, 10:29 AM ESTSpecial Weather StatementJAXGilchrist31 min
Feb 23, 10:56 AM ESTSpecial Weather StatementJAXGilchrist34 min
Feb 23, 11:31 AM ESTSpecial Weather StatementJAXGilchrist29 min
Feb 23, 11:41 AM ESTAreal Flood AdvisoryJAXAlachua, Baker, Bradford, Columbia, Gilchrist, Hamilton and 3 more77 days
Feb 23, 11:55 AM ESTSpecial Weather StatementJAXAlachua35 min
Feb 23, 12:50 PM ESTSpecial Weather StatementJAXAlachua25 min
Feb 23, 1:37 PM ESTSpecial Weather StatementJAXPutnam23 min
Feb 23, 1:57 PM ESTSpecial Marine WarningJAX2 hr
Feb 23, 2:02 PM ESTSpecial Weather StatementJAXFlagler, Marion, Putnam43 min
Feb 23, 2:17 PM ESTSevere Thunderstorm WarningJAXMarion28 min
Feb 23, 2:32 PM ESTTornado WarningJAXFlagler28 min
Feb 23, 2:47 PM ESTSpecial Weather StatementJAXPutnam28 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.