Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Jacksonville, FL

March 31, 2012Appling County, Georgia

NWS Jacksonville, FL issued this special weather statement at Mar 31, 2012, 1:09 PM EDT for Appling County, Georgia. It was in force for 51 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
Mar 31, 2012, 1:09 PM EDT (17:09 UTC)
Expired
Mar 31, 2012, 2:00 PM EDT
In force
51 min
Issued by
NWS Jacksonville, FL

County Appling County, GA

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 5.2 hours before the alert went out and 144 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 2012-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 751 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 2012-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 151 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
751 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
772 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 31, 9:25 AM EDT, 3 hours 44 minutes earlier.

Area forecast discussion, Mar 31, 9:25 AM EDT, 3 hours 44 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
925 AM EDT SAT MAR 31 2012

...STRONG TO SEVERE STORMS POSSIBLE THIS AFTERNOON...

.UPDATE...CONVECTION ONGOING OVER NE FL AS UPPER TROUGH TO THE
WEST APPROACHES THE AREA. ACTIVITY IS STRONG BUT NOT SEVERE AS
SURFACE INSTABILITY IS WEAK SO FAR. EXPECT STRONG TO SEVERE
THUNDERSTORMS BY AFTERNOON AS INSTABILITY INCREASES WITH HEATING
AND COOLING TEMPS ALOFT. MAIN THREAT WILL BE STRONG DAMAGING
WINDS WITH ACTIVITY DECREASING BY EARLY EVENING AS SHORT WAVE AXIS
REACHES EAST COAST AROUND 00Z. CURRENT FORECAST HAS THIS ALL
COVERED SO NO CHANGES NEEDED AT THIS TIME.

&&

.AVIATION...THUNDERSTORMS WILL REACH VQQ AND JAX TAFS BY 15Z WITH
THUNDER LIKELY AT GNV AND SSI BY EARLY AFTERNOON. STRONG WIND
GUSTS AND HEAVY DOWNPOURS WILL PRODUCE IFR CONDITIONS IN AND NEAR
STORMS. IMPROVING CONDITIONS AFTER 22Z.

&&

.MARINE...OFFSHORE BUOYS NOW REPORTING SW WINDS IN 10-15 KNOT
RANGE. EXPECT WINDS TO INCREASE TO 15-20 KNOT RANGE OFFSHORE...AND AROUND
15 KNOTS NEAR SHORE. SEAS WILL BE UP TO 4 FEET WELL OFFSHORE. WILL
CONTINUE SCEC HEADLINE FOR OFFSHORE ZONES.

RIP CURRENTS: LOW RISK WITH OFFSHORE FLOW.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  78  58  86  60 /  80  10  10  10
SSI  77  61  79  63 /  70  20  10  10
JAX  80  60  86  61 /  70  20  10  10
SGJ  80  63  83  64 /  60  20  10  10
GNV  80  59  87  59 /  70  20  10  10
OCF  82  61  86  60 /  60  10  10  10

&&

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

ZIBURA/HESS/KEEGAN
Hazardous weather outlook, Mar 31, 4:39 AM EDT, 8 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
439 AM EDT SAT MAR 31 2012

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-GAZ132>136-
149>154-162>166-010845-
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-
439 AM EDT SAT MAR 31 2012

...STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE TODAY...

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

.DAY ONE...TODAY AND TONIGHT.

AN UPPER LEVEL DISTURBANCE WILL BRING NUMEROUS THUNDERSTORMS TO
THE REGION TODAY. THE HIGHEST COVERAGE OF STORMS IS EXPECTED FROM
LATE MORNING INTO EARLY AFTERNOON AS CLUSTERS OF THUNDERSTORMS
MOVE EAST AROUND 15 TO 25 MPH. THE STRONGEST STORMS WILL BE
CAPABLE OF LOCALLY DAMAGING WINDS AND LARGE HAIL.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SOME AFTERNOON THUNDERSTORMS WILL BE POSSIBLE TUESDAY THROUGH
FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.

JDS

In the hours before

Special weather statement, Mar 31, 11:20 AM EDT, 1 hour 49 minutes before
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Local storm report, Mar 31, 11:42 AM EDT, 1 hour 27 minutes before
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Special weather statement, Mar 31, 11:59 AM EDT, 1 hour 10 minutes before
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Special weather statement, Mar 31, 12:22 PM EDT, 47 minutes before
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Special weather statement, Mar 31, 12:42 PM EDT, 27 minutes before
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Special weather statement, Mar 31, 1:09 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 7:41 AM EDTSpecial Weather StatementJAXColumbia, Gilchrist49 min
Mar 31, 7:49 AM EDTSpecial Weather StatementJAXHamilton, Suwannee41 min
Mar 31, 8:28 AM EDTSpecial Weather StatementJAXBaker, Columbia, Union32 min
Mar 31, 9:00 AM EDTSpecial Weather StatementJAXBaker, Union45 min
Mar 31, 9:21 AM EDTSpecial Weather StatementJAXBaker39 min
Mar 31, 9:45 AM EDTAreal Flood AdvisoryJAXBaker, Columbia, Union2 hr
Mar 31, 9:51 AM EDTSpecial Weather StatementJAXHamilton39 min
Mar 31, 10:07 AM EDTSpecial Weather StatementJAXHamilton, Suwannee53 min
Mar 31, 10:26 AM EDTSpecial Weather StatementJAXBaker, Nassau49 min
Mar 31, 10:46 AM EDTSpecial Weather StatementJAXBaker29 min
Mar 31, 11:14 AM EDTSpecial Weather StatementJAXClay, Duval31 min
Mar 31, 11:17 AM EDTSpecial Weather StatementJAXBaker, Columbia, Nassau28 min
Mar 31, 11:20 AM EDTSpecial Weather StatementJAXAlachua, Bradford, Union40 min
Mar 31, 11:59 AM EDTSpecial Weather StatementJAXAlachua, Bradford, Clay46 min
Mar 31, 12:19 PM EDTAreal Flood AdvisoryJAXAlachua, Bradford, Union116 min
Mar 31, 12:22 PM EDTSpecial Weather StatementJAXClay23 min
Mar 31, 12:23 PM EDTSpecial Marine WarningJAX67 min
Mar 31, 12:42 PM EDTSpecial Weather StatementJAXClay, Putnam48 min
Mar 31, 12:47 PM EDTSpecial Marine WarningJAX88 min
Mar 31, 1:14 PM EDTSpecial Weather StatementJAXFlagler, Putnam, Saint Johns46 min
Mar 31, 1:57 PM EDTSpecial Weather StatementJAXHamilton33 min
Mar 31, 2:03 PM EDTSpecial Weather StatementJAXFlagler, Putnam42 min
Mar 31, 2:08 PM EDTSpecial Marine WarningJAX97 min
Mar 31, 2:31 PM EDTSpecial Weather StatementJAXColumbia29 min
Mar 31, 2:58 PM EDTSpecial Weather StatementJAXNassau32 min
Mar 31, 3:44 PM EDTSpecial Weather StatementJAXNassau46 min
Mar 31, 4:23 PM EDTSevere Thunderstorm WarningJAXDuval52 min
Mar 31, 4:33 PM EDTSpecial Marine WarningJAX87 min
Mar 31, 4:37 PM EDTSpecial Weather StatementJAXClay38 min
Mar 31, 5:03 PM EDTSpecial Weather StatementJAXSaint Johns42 min
Mar 31, 5:13 PM EDTSpecial Weather StatementJAXSaint Johns47 min
Mar 31, 5:41 PM EDTSevere Thunderstorm WarningJAXPutnam, Saint Johns49 min
Mar 31, 5:42 PM EDTSpecial Marine WarningJAX93 min
Mar 31, 7:09 PM EDTSpecial Marine WarningJAX2 hr
Mar 31, 10:28 AM EDTSpecial Weather StatementJAXCharlton32 min

Nearby

Special Weather Statements in Georgia, 2012Every special weather statement 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.