Alert archive / Florida / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 91, NWS Jacksonville, FL

June 26, 2013Alachua County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 26, 2013, 6:01 PM EDT for Alachua County, Florida. It was in force for 44 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 26, 2013, 6:01 PM EDT (22:01 UTC)
Expired
Jun 26, 2013, 6:45 PM EDT
In force
44 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

County Alachua County, FL

The radar

The Jacksonville radar (KJAX), 110 km from the middle of the area, began a volume at 22:04 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, 10.0 hours before the alert went out and 111 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 2013-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 484 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 2013-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
484 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
1020 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
22 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 26, 2:17 PM EDT, 3 hours 44 minutes earlier.

Area forecast discussion, Jun 26, 2:17 PM EDT, 3 hours 44 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
217 PM EDT WED JUN 26 2013

.SHORT TERM...
UPPER-LEVEL RIDGE OVER FORECAST AREA TONIGHT...SHOULD SEE SCT'D
AFTN SHRA/TSRA GRADUALLY DIMINISH DURING THE EVENING. CURRENT LOW
TEMP FCST LOOKS FINE.

UPR RIDGE REPLACED WITH NW FLOW ALOFT THURSDAY...WITH SHORTWAVE MOVING
SE OVER THE AREA IN THE AFTN. EXPECT EARLY DVLPMENT OF SCT'D SHRA/TSRA
ALONG W COAST SEA BREEZE...SPREADING EASTWARD ACROSS FCST AREA DURING
THE AFTN...WITH E COAST SEA BREEZE NOT MAKING MUCH INLAND PROGRESS GIVEN
LLVL SW FLOW AHEAD OF SHORTWAVE. RIGHT NOW GOING WITH AROUND 40 POP FOR
AREA THURS...BUT MAY NEED TO BE INCREASED TO LIKELY VALUES IF GREATER
COVERAGE BECOMES MORE CERTAIN WITH SHORTWAVE. NO SIG CHANGES TO CURRENT
FCST HIGH TEMP.

.LONG TERM /THROUGH WEDNESDAY/...
DEEP LAYER TROUGH WILL SETTLE OVER THE EASTERN U.S. BY FRIDAY WITH
AN UNSETTLED WEATHER PATTERN CONTINUING INTO NEXT WEEK. THIS
REGIME WILL BRING A MOIST AND DISTURBED PREVAILING SOUTHWEST FLOW
PATTERN ACROSS FORECAST AREA. HIGH MOISTURE CONTENT WITH PWATS
OVER 2 INCHES COMBINED WITH DIURNAL INSTABILITY WILL CREATE ABOVE
NORMAL RAIN CHANCES. JAVE CONTINUE TO CAP POPS AT 50%...BUT EXPECT
POPS TO INCREASE TO LIKELY (60-70%) OR CATEGORICAL (80-90%) AT
TIMES MAINLY DUE TO INFLUENCES OF MID LEVEL ENERGY ROTATING
THROUGH THE LONGWAVE TROUGH. ON MOST DAYS...CONVECTION WILL BEGIN
NEAR THE SUWANNEE RIVER VALLEY DURING THE MORNING HOURS...THEN
TRACK INLAND THROUGH THE DAY. TEMPS WILL BE NEAR TO ABOVE CLIMO
VALUES WITH HIGHS IN THE LOW 90S AND LOWS IN THE LOW/MID 70S.

&&

.AVIATION...
STORMS ARE NEAR JAX AND VQQ AND HAVE ADDED A TEMPO FOR VARIABLE
GUSTY WINDS AND REDUCED CONDS THROUGH 20Z. HAVE VCTS AT TERMINALS
PAST SUNSET THEN CONVECTION WILL WEAKEN. MVFR CONDS POSSIBLE AFTER
MIDNIGHT AT TERMINALS WHERE HEAVY RAIN OCCURS THIS AFTN.

&&

.MARINE...
EXPECT INCREASING SW FLOW ACROSS THE WATERS LATE THIS WEEK
THROUGH THE WEEKEND. SPEEDS COULD GET TO ADVISORY CRITERIA OVER
THE WEEKEND. MODEL GUIDANCE KEEPS SEAS IN THE 2-4 FT RANGE THROUGH
THE WEEKEND.

RIP CURRENTS: MODERATE RISK CONTINUES THIS AFTERNOON DUE TO 2 FT
EASTERLY SWELL. A LOW RISK IS ANTICIPATED ON WEDNESDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  72  92  75  93 /  40  40  30  40
SSI  76  90  77  91 /  20  40  40  40
JAX  72  92  75  94 /  20  40  40  50
SGJ  74  89  74  90 /  20  40  40  40
GNV  71  92  73  92 /  30  40  20  50
OCF  72  92  73  92 /  40  40  20  50

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GA...NONE.
AM...NONE.
&&

WOLF/TRABERT/GUILLET
Hazardous weather outlook, Jun 26, 9:59 AM EDT, 8 hours 2 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
959 AM EDT WED JUN 26 2013

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-
GAZ132>136-149>154-162>166-270845-
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-
959 AM EDT WED JUN 26 2013

...MODERATE RISK FOR RIP CURRENTS TODAY...

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

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

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND
EVENING. A FEW OF THESE STORMS COULD BECOME STRONG WITH GUSTY WINDS
AND LOCALLY HEAVY RAINFALL.

CONTINUED EASTERLY SWELLS WILL PROMOTE A MODERATE RISK FOR RIP CURRENTS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

SCATTERED THUNDERSTORM ACTIVITY...MAINLY DURING THE AFTERNOON AND
EVENING HOURS WILL CONTINUE THROUGH THE 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.

In the hours before

Special weather statement, Jun 26, 5:12 PM EDT, 49 minutes before
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Special weather statement, Jun 26, 5:16 PM EDT, 45 minutes before
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Special weather statement, Jun 26, 5:23 PM EDT, 38 minutes before
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Special weather statement, Jun 26, 5:26 PM EDT, 35 minutes before
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Special weather statement, Jun 26, 5:29 PM EDT, 32 minutes before
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Special weather statement, Jun 26, 5:49 PM EDT, 12 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 8:38 PM EDTSpecial Weather StatementJAXMarion37 min
Jun 26, 2:25 PM EDTSpecial Weather StatementJAXDuval50 min
Jun 26, 2:43 PM EDTSpecial Weather StatementJAXDuval47 min
Jun 26, 2:52 PM EDTSevere Thunderstorm WarningJAXClay, Duval53 min
Jun 26, 3:11 PM EDTSpecial Weather StatementJAXDuval34 min
Jun 26, 3:23 PM EDTSpecial Weather StatementJAXClay37 min
Jun 26, 3:35 PM EDTSevere Thunderstorm WarningJAXClay, Saint Johns40 min
Jun 26, 3:38 PM EDTSpecial Marine WarningJAX112 min
Jun 26, 4:08 PM EDTSpecial Weather StatementJAXSaint Johns37 min
Jun 26, 4:17 PM EDTSpecial Weather StatementJAXPutnam28 min
Jun 26, 4:27 PM EDTSpecial Weather StatementJAXMarion33 min
Jun 26, 4:45 PM EDTSpecial Weather StatementJAXPutnam45 min
Jun 26, 4:47 PM EDTSpecial Weather StatementJAXAlachua28 min
Jun 26, 4:53 PM EDTSpecial Weather StatementJAXPutnam37 min
Jun 26, 5:16 PM EDTSpecial Weather StatementJAXMarion29 min
Jun 26, 5:23 PM EDTSpecial Weather StatementJAXMarion37 min
Jun 26, 5:26 PM EDTSpecial Weather StatementJAXAlachua34 min
Jun 26, 5:29 PM EDTSpecial Weather StatementJAXMarion46 min
Jun 26, 5:49 PM EDTSpecial Weather StatementJAXMarion41 min
Jun 26, 6:04 PM EDTSevere Thunderstorm WarningJAXMarion41 min
Jun 26, 6:27 PM EDTAreal Flood AdvisoryJAXAlachua93 min
Jun 26, 6:31 PM EDTAreal Flood AdvisoryJAXMarion89 min
Jun 26, 6:47 PM EDTSpecial Weather StatementJAXAlachua43 min
Jun 26, 6:50 PM EDTSpecial Weather StatementJAXColumbia40 min
Jun 26, 3:27 PM EDTSpecial Weather StatementJAXWayne33 min
Jun 26, 3:38 PM EDTSpecial Weather StatementJAXCamden52 min
Jun 26, 4:41 PM EDTSpecial Weather StatementJAXAppling34 min
Jun 26, 4:42 PM EDTSpecial Weather StatementJAXBacon33 min
Jun 26, 5:12 PM EDTSpecial Weather StatementJAXBacon, Pierce48 min
Jun 26, 6:34 PM EDTSevere Thunderstorm WarningJAXGlynn41 min
Jun 26, 7:16 PM EDTSpecial Weather StatementJAXGlynn44 min
Jun 26, 7:42 PM EDTSpecial Weather StatementJAXBrantley, Ware48 min

Nearby

Severe Thunderstorm Warnings in Florida, 2013Every severe thunderstorm warning in 2013

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.