Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 211, NWS Jacksonville, FL

October 14, 2014Nassau County, Florida; Camden County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Oct 14, 2014, 3:05 PM EDT for Nassau County, Florida; Camden County, Georgia. It was in force for 25 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
Oct 14, 2014, 3:05 PM EDT (19:05 UTC)
Expired
Oct 14, 2014, 3:30 PM EDT
In force
25 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Nassau County, FL, Camden County, GA

The radar

The Jacksonville radar (KJAX), 31 km from the middle of the area, began a volume at 19:07 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 14, 11:43 AM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 7.1 hours before the alert went out and 30 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 2014-10-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 130 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 2014-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
130 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
1066 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
81 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 Oct 14, 1:40 PM EDT, 1 hour 25 minutes earlier.

Area forecast discussion, Oct 14, 1:40 PM EDT, 1 hour 25 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
140 PM EDT TUE OCT 14 2014

.MARINE...

UPDATED TO SMALL CRAFT INNER BASED ON RECENT OBSERVATIONS. THE
INCREASED PRESSURE GRADIENT ASSOCIATED WITH APPROACHING FRONT IS
EXPECTED TO KEEP WINDS ELEVATED.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  62  75  55  75 /  80  10   0   0
SSI  67  77  60  74 /  80  20   0   0
JAX  67  79  57  77 /  80  30   0   0
SGJ  69  80  60  77 /  80  80  10   0
GNV  66  78  57  78 /  80  30   0   0
OCF  68  80  58  79 /  80  70   0   0

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GA...NONE.
AM...SMALL CRAFT ADVISORY UNTIL 10 AM EDT WEDNESDAY FOR ALTAMAHA
     SOUND GA TO FERNANDINA BEACH FL 20 NM TO 60 NM OFFSHORE-
     ALTAMAHA SOUND GA TO FERNANDINA BEACH FL OUT 20 NM-
     FERNANDINA BEACH TO ST AUGUSTINE FL 20 NM TO 60 NM OFFSHORE-
     FERNANDINA BEACH TO ST AUGUSTINE FL OUT 20 NM-ST AUGUSTINE
     TO FLAGLER BEACH FL 20 NM TO 60 NM OFFSHORE-ST AUGUSTINE TO
     FLAGLER BEACH FL OUT 20 NM.

&&

STRUBLE
Hazardous weather outlook, Oct 14, 3:00 PM EDT, 5 minutes before
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In the hours before

Special weather statement, Oct 14, 2:00 PM EDT, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
200 PM EDT TUE OCT 14 2014

GAZ132-134-149-150-141845-
ATKINSON-BACON-COFFEE-WARE-
200 PM EDT TUE OCT 14 2014

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR WARE...
ATKINSON...BACON AND COFFEE COUNTIES FOR STRONG WINDS AND SMALL HAIL
VALID UNTIL 245 PM EDT...

AT 200 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED 7 MILES SOUTH OF BICKLEY...MOVING NORTHEAST AT
25 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND
BICKLEY...NICHOLLS...NEW LACY AND ALMA THROUGH 245 PM EDT. HAIL UP TO
THREE QUARTER 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
TUESDAY EVENING FOR NORTHEASTERN FLORIDA AND SOUTHEAST GEORGIA.

LAT...LON 3169 8248 3166 8244 3164 8240 3163 8236
      3158 8229 3123 8257 3131 8276 3168 8255
      3168 8252 3171 8252
TIME...MOT...LOC 1800Z 209DEG 20KT 3133 8262

SHASHY
Special weather statement, Oct 14, 2:21 PM EDT, 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
221 PM EDT TUE OCT 14 2014

FLZ022-023-030-031-035-036-141900-
ALACHUA-BAKER-BRADFORD-COLUMBIA-GILCHRIST-UNION-
221 PM EDT TUE OCT 14 2014

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR BRADFORD...
BAKER...ALACHUA...COLUMBIA...GILCHRIST AND UNION COUNTIES FOR STRONG
WINDS...SMALL HAIL AND EXCESSIVE LIGHTNING VALID UNTIL 300 PM EDT...

AT 221 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 11 MILES NORTHWEST
OF TAYLOR TO 3 MILES SOUTH OF OLUSTEE TO 7 MILES NORTHWEST OF
NEWBERRY...MOVING EAST AT 30 MPH. THESE STRONG THUNDERSTORMS WILL
ALSO AFFECT AREAS AROUND PROVIDENCE...PALESTINE COMMUNITY...
TRENTON...WATERTOWN...OLENO STATE PARK...LULU...LAKE CITY...
OLUSTEE...BELL AND FORT WHITE THROUGH 300 PM EDT. HAIL UP TO THREE
QUARTER INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
TUESDAY EVENING FOR NORTHEASTERN FLORIDA AND SOUTHEAST GEORGIA.

LAT...LON 2982 8294 2997 8276 3007 8279 3018 8271
      3032 8274 3033 8269 3039 8265 3045 8266
      3052 8273 3060 8269 3057 8223 3053 8224
      3039 8220 3036 8217 3036 8205 2970 8210
      2955 8254 2961 8297
TIME...MOT...LOC 1821Z 270DEG 26KT 3056 8239 3015 8239
          2970 8269

SANDRIK
Special weather statement, Oct 14, 2:38 PM EDT, 27 minutes before
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Special weather statement, Oct 14, 2:42 PM EDT, 23 minutes before
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Special weather statement, Oct 14, 2:44 PM EDT, 21 minutes before
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Special weather statement, Oct 14, 3:02 PM EDT, 3 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 14, 1:00 PM EDTSpecial Weather StatementJAXHamilton, Suwannee30 min
Oct 14, 1:31 PM EDTSevere Thunderstorm WarningJAXHamilton, Suwannee29 min
Oct 14, 1:54 PM EDTSpecial Weather StatementJAXColumbia36 min
Oct 14, 2:21 PM EDTSpecial Weather StatementJAXAlachua, Baker, Bradford, Columbia, Gilchrist, Union39 min
Oct 14, 2:38 PM EDTSpecial Weather StatementJAXClay, Putnam52 min
Oct 14, 2:42 PM EDTSpecial Weather StatementJAXNassau33 min
Oct 14, 2:50 PM EDTSevere Thunderstorm WarningJAXBaker28 min
Oct 14, 3:13 PM EDTSpecial Marine WarningJAX2 hr
Oct 14, 3:19 PM EDTSevere Thunderstorm WarningJAXClay, Duval, Nassau41 min
Oct 14, 3:28 PM EDTSevere Thunderstorm WarningJAXDuval, Nassau47 min
Oct 14, 3:59 PM EDTSpecial Weather StatementJAXDuval46 min
Oct 14, 5:11 PM EDTSpecial Weather StatementJAXMarion49 min
Oct 14, 5:14 PM EDTSpecial Marine WarningJAX91 min
Oct 14, 5:19 PM EDTAreal Flood AdvisoryJAXFlagler, Saint Johns86 min
Oct 14, 5:24 PM EDTSpecial Weather StatementJAXSaint Johns51 min
Oct 14, 5:55 PM EDTSpecial Weather StatementJAXMarion35 min
Oct 14, 6:12 PM EDTSpecial Weather StatementJAXSaint Johns48 min
Oct 14, 6:29 PM EDTSpecial Weather StatementJAXMarion46 min
Oct 14, 6:42 PM EDTSpecial Marine WarningJAX63 min
Oct 14, 6:49 PM EDTSpecial Weather StatementJAXFlagler41 min
Oct 14, 7:07 PM EDTSpecial Marine WarningJAX83 min
Oct 14, 7:15 PM EDTSevere Thunderstorm WarningJAXFlagler, Saint Johns30 min
Oct 14, 7:45 PM EDTAreal Flood AdvisoryJAXFlagler, Saint Johns90 min
Oct 14, 1:14 PM EDTSpecial Weather StatementJAXLanier46 min
Oct 14, 1:52 PM EDTSevere Thunderstorm WarningJAXClinch, Echols, Ware38 min
Oct 14, 2:00 PM EDTSpecial Weather StatementJAXBacon45 min
Oct 14, 2:11 PM EDTSevere Thunderstorm WarningJAXBrantley, Pierce, Ware49 min
Oct 14, 2:42 PM EDTSevere Thunderstorm WarningJAXAppling, Bacon, Ware48 min
Oct 14, 2:44 PM EDTSpecial Weather StatementJAXWayne31 min
Oct 14, 3:02 PM EDTSpecial Weather StatementJAXBrantley, Charlton, Pierce, Wayne43 min
Oct 14, 3:09 PM EDTSevere Thunderstorm WarningJAXWayne21 min
Oct 14, 3:26 PM EDTSevere Thunderstorm WarningJAXAppling, Brantley, Camden, Charlton, Glynn, Pierce and 1 more64 min
Oct 14, 4:34 PM EDTSpecial Weather StatementJAXGlynn26 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014Severe Thunderstorm Warnings in Georgia, 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.