Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 16, NWS Jacksonville, FL

May 28, 2012Duval County, Nassau County, Florida

NWS Jacksonville, FL issued this tornado warning at May 28, 2012, 9:39 AM EDT for Duval County, Nassau County, Florida. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 28, 2012, 9:39 AM EDT (13:39 UTC)
Expired
May 28, 2012, 10:01 AM EDT
In force
22 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Duval County, FL, Nassau County, FL

The radar

The Jacksonville radar (KJAX), 26 km from the middle of the area, began a volume at 13:42 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, 1.7 hours before the alert went out and 27 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 2012-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 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 2012-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.193958Sfc1 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
39 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
464 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

758 
WFUS52 KJAX 281339
TORJAX
FLC031-089-281430-
/O.NEW.KJAX.TO.W.0016.120528T1339Z-120528T1430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
939 AM EDT MON MAY 28 2012

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN DUVAL COUNTY IN NORTHEAST FLORIDA
  EASTERN NASSAU COUNTY IN NORTHEAST FLORIDA

* UNTIL 1030 AM EDT

* AT 938 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 
  JUST NORTH OF FRUIT COVE...MOVING NORTH AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  UNF...SAN PABLO...FORT CAROLINE...MAYPORT...LITTLE TALBOT ISLAND
  AND TALBOT ISLAND.

OTHER THUNDERSTORMS IN EASTERN DUVAL COUNTY SHOW SIGNS OF ROTATION 
AND COULD PRODUCE FUNNEL CLOUDS OR BRIEF TORNADOES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR
HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER
YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

&&

LAT...LON 3011 8150 3013 8163 3057 8153 3052 8143
      3051 8144 3049 8141 3041 8140 3040 8139
TIME...MOT...LOC 1338Z 200DEG 28KT 3015 8155

$$

WOLF
1 follow-up statement
629 
WWUS52 KJAX 281401
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1001 AM EDT MON MAY 28 2012

FLC031-089-281411-
/O.CAN.KJAX.TO.W.0016.000000T0000Z-120528T1430Z/
DUVAL FL-NASSAU FL-
1001 AM EDT MON MAY 28 2012

...THE TORNADO WARNING FOR EASTERN NASSAU AND EASTERN DUVAL COUNTIES
IS CANCELLED...

THE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO HAS WEAKENED...AND 
THE IMMEDIATE TORNADO THREAT HAS ENDED. OTHER SHOWERS IN THE AREA
ARE SHOWING WEAK ROTATION, AND COULD PRODUCE FUNNEL CLOUDS.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

LAT...LON 3011 8150 3013 8163 3057 8153 3052 8143
      3051 8144 3049 8141 3041 8140 3040 8139
TIME...MOT...LOC 1401Z 200DEG 28KT 3032 8148

$$

WOLF

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 8:55 PM EDTSpecial Weather StatementJAXDuval, Nassau, Saint Johns35 min
May 27, 9:09 PM EDTSpecial Weather StatementJAXDuval21 min
May 27, 9:30 PM EDTSpecial Weather StatementJAXDuval, Nassau, Saint Johns30 min
May 27, 9:55 PM EDTSpecial Weather StatementJAXClay, Duval, Nassau35 min
May 27, 10:06 PM EDTSpecial Weather StatementJAXClay, Duval, Nassau24 min
May 27, 10:32 PM EDTSpecial Weather StatementJAXClay, Duval, Nassau, Putnam, Saint Johns43 min
May 27, 11:06 PM EDTSpecial Weather StatementJAXClay, Duval, Nassau, Putnam, Saint Johns39 min
May 27, 11:40 PM EDTSpecial Weather StatementJAXBaker, Bradford, Clay, Duval, Flagler, Nassau and 3 more35 min
May 28, 12:32 AM EDTSpecial Weather StatementJAXNassau43 min
May 28, 1:17 AM EDTSpecial Weather StatementJAXNassau43 min
May 28, 5:20 AM EDTAreal Flood WarningJAXClay, Duval, Putnam, Saint Johns6 hr
May 28, 9:05 AM EDTFlash Flood WarningJAXDuval3 hr
May 28, 9:26 AM EDTSpecial Weather StatementJAXDuval64 min
May 28, 9:34 AM EDTSpecial Weather StatementJAXPutnam26 min
May 28, 10:02 AM EDTSpecial Weather StatementJAXDuval43 min
May 28, 10:24 AM EDTTornado WarningJAXDuval, Saint Johns20 min
May 28, 11:22 AM EDTSpecial Weather StatementJAXNassau38 min
May 28, 11:27 AM EDTLake Wind AdvisoryJAXFlagler, Gilchrist7 hr
May 28, 12:01 PM EDTSmall Craft AdvisoryJAX48 hr
May 28, 12:12 PM EDTSpecial Marine WarningJAX2 hr
May 28, 12:42 PM EDTSpecial Weather StatementJAXDuval, Nassau48 min
May 28, 1:27 PM EDTSpecial Marine WarningJAX63 min
May 28, 2:02 PM EDTSpecial Marine WarningJAX118 min
May 28, 2:37 PM EDTSpecial Marine WarningJAX45 min
May 28, 2:50 PM EDTAreal Flood AdvisoryJAXGilchrist, Suwannee115 min
May 28, 4:06 PM EDTSpecial Weather StatementJAXMarion39 min
May 28, 4:20 PM EDTSpecial Weather StatementJAXAlachua, Baker, Bradford, Clay, Columbia, Duval and 7 more55 min
May 28, 5:04 PM EDTAreal Flood WarningJAXBaker, Columbia, Gilchrist, Suwannee116 min
May 28, 5:19 PM EDTSpecial Weather StatementJAXAlachua, Baker, Bradford, Clay, Columbia, Hamilton and 5 more56 min
May 28, 5:25 PM EDTSevere Thunderstorm WarningJAXMarion50 min
May 28, 5:46 PM EDTSpecial Weather StatementJAXGilchrist44 min
May 28, 5:52 PM EDTSevere Thunderstorm WarningJAXClay, Duval, Nassau38 min
May 28, 6:19 PM EDTSpecial Weather StatementJAXPutnam41 min
May 28, 6:45 PM EDTSpecial Weather StatementJAXAlachua45 min
May 28, 6:58 PM EDTAreal Flood WarningJAXAlachua, Baker, Bradford, Columbia, Gilchrist, Hamilton and 2 more6 hr
May 28, 7:18 PM EDTSpecial Weather StatementJAXMarion42 min
May 28, 7:33 PM EDTSpecial Weather StatementJAXClay42 min
May 28, 7:54 PM EDTSpecial Weather StatementJAXMarion51 min
May 28, 7:59 PM EDTSpecial Weather StatementJAXAlachua, Bradford46 min

Nearby

Tornado Warnings in Florida, 2012Every tornado warning in 2012Tornadoes in 2012

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.