Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 138, NWS Jacksonville, FL

June 13, 20114 counties in Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 13, 2011, 5:36 PM EDT for 4 counties in Florida. It was in force for 39 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 13, 2011, 5:36 PM EDT (21:36 UTC)
Expired
Jun 13, 2011, 6:15 PM EDT
In force
39 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Alachua County, FL, Bradford County, FL, Columbia County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 86 km from the middle of the area, began a volume at 21:38 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, 9.6 hours before the alert went out and 88 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 2011-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1598 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 2011-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
1598 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
924 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
42 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 13, 2:11 PM EDT, 3 hours 25 minutes earlier.

Area forecast discussion, Jun 13, 2:11 PM EDT, 3 hours 25 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
211 PM EDT MON JUN 13 2011

...HEAT AND SMOKE HIGHLIGHT OUR WEATHER THE NEXT FEW DAYS...

.SHORT TERM...TNGT THRU WED NGT...VISIBLE SATELLITE IMAGERY
SHOWS SEVERAL SMOKE PLUMES ACROSS FAR SE GA AND NE FL...WITH
SMOKE SPREADING E TO SE. AREAS AFFECTED BY SMOKE TODAY LIKELY TO
SEE IT AGAIN TUE AND WED WITH LITTLE CHANGE IN W TO NW LLVL FLOW.

MODEL GUID CONTINUES TO SUGGEST HIGH 1000-850 MB TEMP/THICKNESS
VALUES ACRS FAR SRN GA AND NRN FL SUPPORTING HIGH TEMPS NEAR 100
DEGREES. MODELS INDICATE MORE IN WAY OF E COAST SEA BREEZE
INTRUSION BY WED AFTN...AND ALSO INDICATE SLIGHT COOLING OF
850-925MB TEMPS SCTRL GA...BUT TEMPS WILL BE ABOVE NORMAL AREA
WIDE. LLVL TEMPS/THICKNESSES SUPPORT 100 DEG JAX AREA TUE/WED...
BUT SMOKE AND E COAST SEA BREEZE (ESP WED AFTN) MAY KEEP TEMPS A
LITTLE BELOW. MODELS SUGGEST HIGHER TEMP/THICKNESS VALUES
SUPPORTING NEAR 100 DEG TEMPS GNV/OCF AREAS TUE/WED. WILL INDICATE
'NEAR RECORD HIGH TEMPS' IN FCST FOR TMRW.

SHORTWAVE PASSES OVER AREA TNGT...WILL MAINTAIN AT LEAST SLIGHT
CHANCE PCPN THRU THE NGT SRN AREAS DUE TO WEAK FRONTAL BOUNDARY
AND SHORTWAVE ALOFT. SHORTWAVE MOVES OVER SRN AREAS TUE...AND
CONFINING LOW POPS TO SRN HALF OF FCST AREA. SLIGHTLY HIGHER POPS
FOR WED INTERIOR PORTION OF NE FL AS MODELS SUGGEST BETTER
COVERAGE GIVEN SEA BREEZE INTERSECTION LAKE CITY-GNV-OCF CORRIDOR.

.LONG TERM...THU THRU MON...MODEL GUID MAINTAINS ABOVE NORMAL TEMPS
THRU WEEKEND. MODELS SUGGEST MORE ERN SEA BREEZE INTERSECTION LATE
THU...SO SLIGHTLY HIGHER POPS EASTERN HALF OF FCST AREA. WILL
MAINAIN LOW POPS THRU WEEKEND MAINLY ALONG SEA BREEZE BOUNDARIES.

&&

.AVIATION...
GENERALLY VFR CONDITIONS CONTINUE THROUGH THE EVENING HOURS EXCEPT
LOWER IN THE VICINITY OF THUNDERSTORMS THIS AFTERNOON. VISIBILITIES
CONTINUE TO BE RESTRICTED TO MVFR VALUES...AND LOCALLY BELOW 3 MILES
IMMEDIATELY DOWNSTREAM OF FIRE LOCATIONS. FOR OVERNIGHT...FOG SHOULD
NOT BE A BIG ISSUE AS WINDS NOT EXPECTED TO DECOUPLE...THOUGH SMOKE
WILL CONTINUE TO RESTRICT VISIBILITIES IN AREAS DOWNSTREAM OF
FIRES.

&&

.MARINE...
OFFSHORE FLOW WILL CONTINUE TO PRODUCE RESTRICTED VISIBILITES
THROUGH PORTIONS OF THE OFFSHORE WATERS DUE TO SMOKE.

&&

.FIRE WEATHER...
WILL MAINTAIN FIRE WEATHER WATCH FOR TUESDAY AFTERNOON INTERIOR
NORTH FLORIDA AS HIGH TEMPERATURES ALLOW LOW LEVEL MOISTURE TO MIX
OUT PRODUCING EXTENDED PERIOD OF LOW RH'S...AND ERC'S APPROACHING 40.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  70  97  71  99 /  10  10  10  20
SSI  74  94  75  93 /  20  10  10  20
JAX  73  98  72  98 /  20  10  10  20
SGJ  75  94  74  93 /  20  10  10  20
GNV  72 100  73 100 /  20  20  10  30
OCF  71  99  73  99 /  20  20  10  30

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...RED FLAG WARNING UNTIL 6 PM EDT THIS EVENING FOR COLUMBIA-
     HAMILTON-SUWANNEE.

     FIRE WEATHER WATCH TUESDAY AFTERNOON FOR BAKER-COLUMBIA-
     HAMILTON-SUWANNEE-UNION-GILCHRIST-ALACHUA-BRADFORD.

GA...NONE.
AM...NONE.
&&

WOLF/LETRO/WALKER
Hazardous weather outlook, Jun 13, 5:12 AM EDT, 12 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
512 AM EDT MON JUN 13 2011

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-140915-
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-
512 AM EDT MON JUN 13 2011

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

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

SMOKE FROM AREA WILDFIRES WILL CONTINUE TO CAUSE PERIODIC
VISIBILITY RESTRICTIONS NEAR THE FIRES.

A TROUGH OF LOW PRESSURE WILL SLOWLY MOVE SOUTHEAST ACROSS THE
REGION THROUGH TONIGHT...WHICH WILL LEAD TO MAINLY AFTERNOON AND
EVENING ISOLATED TO SCATTERED THUNDERSTORMS. A FEW STRONG STORMS
WILL BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THERE IS A CHANCE FOR PRIMARILY AFTERNOON AND EVENING ISOLATED TO
SCATTERED THUNDERSTORMS EACH DAY THIS PERIOD.

.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.

LS

In the hours before

Special weather statement, Jun 13, 5:15 PM EDT, 21 minutes before
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Local storm report, Jun 13, 5:22 PM EDT, 14 minutes before
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Local storm report, Jun 13, 5:27 PM EDT, 9 minutes before
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Special weather statement, Jun 13, 5:28 PM EDT, 8 minutes before
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Special weather statement, Jun 13, 5:33 PM EDT, 3 minutes before
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Local storm report, Jun 13, 5:34 PM EDT, 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 5:12 AM EDTFire Weather WatchJAXBaker, Bradford, Gilchrist, Suwannee, Union23 hr
Jun 13, 9:37 AM EDTRed Flag WarningJAXSuwannee8 hr
Jun 13, 2:22 PM EDTSpecial Weather StatementJAXMarion38 min
Jun 13, 2:49 PM EDTSpecial Weather StatementJAXMarion41 min
Jun 13, 2:53 PM EDTSpecial Weather StatementJAXNassau52 min
Jun 13, 3:14 PM EDTSpecial Weather StatementJAXMarion46 min
Jun 13, 3:47 PM EDTSpecial Weather StatementJAXSaint Johns43 min
Jun 13, 4:00 PM EDTSpecial Weather StatementJAXAlachua45 min
Jun 13, 4:04 PM EDTAreal Flood AdvisoryJAXClay, Putnam116 min
Jun 13, 4:16 PM EDTSpecial Weather StatementJAXSuwannee44 min
Jun 13, 4:23 PM EDTAreal Flood AdvisoryJAXAlachua2 hr
Jun 13, 4:26 PM EDTSpecial Weather StatementJAXDuval49 min
Jun 13, 4:28 PM EDTSpecial Weather StatementJAXFlagler47 min
Jun 13, 4:36 PM EDTSpecial Weather StatementJAXFlagler39 min
Jun 13, 4:40 PM EDTSpecial Marine WarningJAX95 min
Jun 13, 4:46 PM EDTSevere Thunderstorm WarningJAXFlagler44 min
Jun 13, 4:49 PM EDTSpecial Marine WarningJAX56 min
Jun 13, 4:50 PM EDTSpecial Weather StatementJAXUnion40 min
Jun 13, 5:00 PM EDTSevere Thunderstorm WarningJAXDuval, Saint Johns45 min
Jun 13, 5:08 PM EDTSpecial Weather StatementJAXSuwannee52 min
Jun 13, 5:15 PM EDTSpecial Weather StatementJAXDuval45 min
Jun 13, 5:28 PM EDTSpecial Weather StatementJAXFlagler47 min
Jun 13, 5:33 PM EDTSpecial Weather StatementJAXClay42 min
Jun 13, 5:57 PM EDTAreal Flood AdvisoryJAXAlachua, Bradford, Columbia, Union2 hr
Jun 13, 6:06 PM EDTSpecial Weather StatementJAXAlachua, Gilchrist39 min
Jun 13, 6:12 PM EDTSpecial Weather StatementJAXDuval48 min
Jun 13, 6:19 PM EDTSpecial Weather StatementJAXSaint Johns41 min
Jun 13, 6:25 PM EDTSpecial Marine WarningJAX95 min
Jun 13, 6:31 PM EDTSpecial Weather StatementJAXNassau44 min
Jun 13, 6:36 PM EDTSpecial Weather StatementJAXHamilton39 min
Jun 13, 6:55 PM EDTSpecial Weather StatementJAXSaint Johns50 min
Jun 13, 7:16 PM EDTSpecial Weather StatementJAXNassau44 min
Jun 13, 7:52 PM EDTSpecial Weather StatementJAXDuval38 min
Jun 12, 9:10 PM EDTSpecial Weather StatementJAXAtkinson50 min
Jun 12, 9:26 PM EDTSevere Thunderstorm WarningJAXAtkinson, Clinch, Coffee, Ware34 min
Jun 12, 9:58 PM EDTSpecial Weather StatementJAXWare32 min
Jun 12, 10:17 PM EDTSpecial Weather StatementJAXClinch, Echols43 min
Jun 13, 3:33 PM EDTSpecial Weather StatementJAXGlynn27 min
Jun 13, 7:44 PM EDTSpecial Weather StatementJAXWayne46 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011Every severe thunderstorm warning in 2011

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.