Alert archive / Georgia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 174, NWS Jacksonville, FL

June 28, 20154 counties in Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 28, 2015, 3:39 PM EDT for 4 counties in 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 counties it named.

The facts

Issued: Jun 28, 2015, 3:39 PM EDT (19:39 UTC)
Expired: Jun 28, 2015, 4:30 PM EDT
In force: 51 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Charlton County, GA, Clinch County, GA, Echols County, GA, Ware County, GA

The radar

The Moody AFB radar (KVAX), 44 km from the middle of the area, began a volume at 19:41 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

Charleston AFB, SC (KCHS), launched 12:00Z, 7.7 hours before the alert went out and 330 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 211 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 832 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 28, 3:26 PM EDT, 13 minutes earlier.

Area forecast discussion, Jun 28, 3:26 PM EDT, 13 minutes before

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Hazardous weather outlook, Jun 28, 3:07 AM EDT, 12 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
307 AM EDT SUN JUN 28 2015

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125-
GAZ132>136-149>154-162>166-291000-
COASTAL WATERS FROM ALTAMAHA SOUND TO FERNANDINA BEACH FL OUT
20 NM-
COASTAL WATERS FROM FERNANDINA BEACH TO ST. AUGUSTINE FL OUT
20 NM-
COASTAL WATERS FROM ST. AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM-
WATERS FROM ALTAMAHA SOUND GA TO FERNANDINA BEACH FL FROM 20 TO
60 NM-
WATERS FROM FERNANDINA BEACH TO ST. AUGUSTINE FL FROM 20 TO 60 NM-
WATERS FROM ST. AUGUSTINE TO FLAGLER BEACH FL FROM 20 TO 60 NM-
HAMILTON-SUWANNEE-COLUMBIA-BAKER-INLAND NASSAU-INLAND DUVAL-UNION-
BRADFORD-CLAY-ST. JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-
COASTAL NASSAU-COASTAL DUVAL-COFFEE-JEFF DAVIS-BACON-APPLING-
WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-INLAND GLYNN-COASTAL GLYNN-
ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-COASTAL CAMDEN-
307 AM EDT SUN JUN 28 2015

...ISOLATED STRONG STORMS POSSIBLE THIS AFTERNOON AND MONDAY
AFTERNOON...

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

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

NUMEROUS THUNDERSTORMS WILL DEVELOP THIS AFTERNOON LINGERING INTO
THE EVENING HOURS. A FEW OF THE STORMS WILL BE CAPABLE OF PRODUCING
GUSTY WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING STRIKES.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

SCATTERED TO NUMEROUS THUNDERSTORMS WILL BE POSSIBLE MONDAY
AFTERNOON. A FEW OF THE STORMS WILL BE CAPABLE OF PRODUCING GUSTY
WINDS AND FREQUENT CLOUD TO GROUND LIGHTNING STRIKES. THUNDERSTORM
COVERAGE WILL DECREASE FOR THE MIDDLE AND LATTER PORTIONS OF THE
WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED 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 28, 2:50 PM EDT, 49 minutes before

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Special weather statement, Jun 28, 2:53 PM EDT, 46 minutes before

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Special weather statement, Jun 28, 3:03 PM EDT, 36 minutes before

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Special weather statement, Jun 28, 3:16 PM EDT, 23 minutes before

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Special weather statement, Jun 28, 3:31 PM EDT, 8 minutes before

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Special weather statement, Jun 28, 3:36 PM EDT, 3 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 9:04 PM EDT	Special Marine Warning	JAX		26 min
Jun 28, 10:55 AM EDT	Special Weather Statement	JAX	Suwannee	35 min
Jun 28, 11:31 AM EDT	Special Weather Statement	JAX	Columbia, Gilchrist, Hamilton, Suwannee	29 min
Jun 28, 11:57 AM EDT	Special Weather Statement	JAX	Baker, Columbia, Union	33 min
Jun 28, 11:59 AM EDT	Special Weather Statement	JAX	Gilchrist	31 min
Jun 28, 12:30 PM EDT	Special Weather Statement	JAX	Baker, Bradford, Union	30 min
Jun 28, 12:32 PM EDT	Special Weather Statement	JAX	Alachua, Gilchrist	28 min
Jun 28, 12:59 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Bradford, Clay, Duval, Nassau, Saint Johns	61 min
Jun 28, 1:20 PM EDT	Special Marine Warning	JAX		85 min
Jun 28, 1:24 PM EDT	Special Marine Warning	JAX		36 min
Jun 28, 2:00 PM EDT	Special Weather Statement	JAX	Duval, Nassau	30 min
Jun 28, 2:10 PM EDT	Special Weather Statement	JAX	Putnam	35 min
Jun 28, 2:27 PM EDT	Special Marine Warning	JAX		2 hr
Jun 28, 2:31 PM EDT	Special Weather Statement	JAX	Saint Johns	29 min
Jun 28, 2:33 PM EDT	Special Marine Warning	JAX		117 min
Jun 28, 2:53 PM EDT	Special Weather Statement	JAX	Saint Johns	37 min
Jun 28, 3:56 PM EDT	Special Weather Statement	JAX	Hamilton	49 min
Jun 28, 4:05 PM EDT	Special Weather Statement	JAX	Nassau	40 min
Jun 28, 4:24 PM EDT	Special Marine Warning	JAX		2 hr
Jun 28, 4:25 PM EDT	Special Weather Statement	JAX	Nassau	50 min
Jun 28, 4:34 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	41 min
Jun 28, 4:44 PM EDT	Special Weather Statement	JAX	Baker	46 min
Jun 28, 5:16 PM EDT	Special Weather Statement	JAX	Alachua, Bradford, Gilchrist, Marion	59 min
Jun 28, 5:21 PM EDT	Special Weather Statement	JAX	Baker, Bradford, Clay, Nassau, Union	54 min
Jun 28, 5:43 PM EDT	Special Weather Statement	JAX	Baker	47 min
Jun 28, 5:55 PM EDT	Special Weather Statement	JAX	Alachua	50 min
Jun 28, 6:05 PM EDT	Special Marine Warning	JAX		85 min
Jun 28, 6:05 PM EDT	Special Weather Statement	JAX	Bradford, Clay, Marion, Putnam	55 min
Jun 28, 6:13 PM EDT	Special Weather Statement	JAX	Duval	47 min
Jun 28, 6:58 PM EDT	Special Weather Statement	JAX	Clay, Flagler, Putnam, Saint Johns	47 min
Jun 28, 7:00 PM EDT	Special Weather Statement	JAX	Hamilton	45 min
Jun 28, 7:16 PM EDT	Special Marine Warning	JAX		119 min
Jun 28, 7:42 PM EDT	Special Weather Statement	JAX	Hamilton	48 min
Jun 28, 7:44 PM EDT	Special Weather Statement	JAX	Flagler, Saint Johns	31 min
Jun 28, 7:58 PM EDT	Special Weather Statement	JAX	Baker	32 min
Jun 28, 1:06 PM EDT	Special Weather Statement	JAX	Clinch, Echols	24 min
Jun 28, 1:28 PM EDT	Severe Thunderstorm Warning	JAX	Atkinson, Clinch, Echols, Ware	47 min
Jun 28, 2:12 PM EDT	Special Weather Statement	JAX	Bacon	48 min
Jun 28, 2:15 PM EDT	Special Weather Statement	JAX	Brantley, Pierce	30 min
Jun 28, 2:25 PM EDT	Special Weather Statement	JAX	Wayne	35 min
Jun 28, 2:30 PM EDT	Special Weather Statement	JAX	Ware	30 min
Jun 28, 2:36 PM EDT	Special Weather Statement	JAX	Glynn	39 min
Jun 28, 2:48 PM EDT	Special Weather Statement	JAX	Atkinson	42 min
Jun 28, 2:50 PM EDT	Special Weather Statement	JAX	Camden	40 min
Jun 28, 2:53 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	52 min
Jun 28, 3:03 PM EDT	Special Weather Statement	JAX	Charlton	42 min
Jun 28, 3:16 PM EDT	Special Weather Statement	JAX	Glynn	14 min
Jun 28, 3:31 PM EDT	Special Weather Statement	JAX	Clinch	44 min
Jun 28, 3:36 PM EDT	Special Weather Statement	JAX	Glynn	24 min
Jun 28, 3:42 PM EDT	Special Weather Statement	JAX	Jeff Davis	63 min
Jun 28, 4:01 PM EDT	Special Weather Statement	JAX	Jeff Davis	44 min
Jun 28, 4:28 PM EDT	Special Weather Statement	JAX	Appling, Jeff Davis	47 min
Jun 28, 4:49 PM EDT	Special Weather Statement	JAX	Coffee	41 min
Jun 28, 5:15 PM EDT	Special Weather Statement	JAX	Wayne	45 min
Jun 28, 5:29 PM EDT	Special Weather Statement	JAX	Atkinson	46 min
Jun 28, 6:02 PM EDT	Special Weather Statement	JAX	Echols	58 min
Jun 28, 6:12 PM EDT	Special Weather Statement	JAX	Atkinson	48 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2015 Every severe thunderstorm warning in 2015

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.