Alert archive / Florida / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 58, NWS Jacksonville, FL

June 2, 2018Columbia County, Hamilton County, Suwannee County, Florida; Echols County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 2, 2018, 4:02 PM EDT for Columbia County, Hamilton County, Suwannee County, Florida; Echols County, Georgia. It was in force for 43 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 2, 2018, 4:02 PM EDT (20:02 UTC)
Expired: Jun 2, 2018, 4:45 PM EDT
In force: 43 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Columbia County, FL, Hamilton County, FL, Suwannee County, FL, Echols County, GA

The radar

The Moody AFB radar (KVAX), 55 km from the middle of the area, began a volume at 20:02 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 2, 1:19 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 8.0 hours before the alert went out and 112 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: 1860 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 34 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 2, 9:58 AM EDT, 6 hours 4 minutes earlier.

Area forecast discussion, Jun 2, 9:58 AM EDT, 6 hours 4 minutes before

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In the hours before

Special weather statement, Jun 2, 2:35 PM EDT, 1 hour 27 minutes before

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Special weather statement, Jun 2, 2:38 PM EDT, 1 hour 24 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
238 PM EDT SAT JUN 2 2018

GAZ152-164-165-021930-
Inland Camden GA-Brantley GA-Charlton GA-
238 PM EDT SAT JUN 2 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CAMDEN...SOUTHERN
BRANTLEY AND NORTHEASTERN CHARLTON COUNTIES UNTIL 330 PM EDT...

At 238 PM EDT, Doppler radar was tracking a strong thunderstorm near
Fort Mudge, or 9 miles southwest of Nahunta, moving east at 15 mph.

Nickel size hail and wind gusts of 45 to 55 mph can be expected along
with possible minor damage.

Locations impacted include...
Hickox, Winokur and Tarboro.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southeastern Georgia.

LAT...LON 3094 8181 3104 8216 3106 8218 3117 8214
      3115 8175
TIME...MOT...LOC 1838Z 288DEG 11KT 3111 8209

ENYEDI

Special weather statement, Jun 2, 2:43 PM EDT, 1 hour 19 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
243 PM EDT SAT JUN 2 2018

GAZ135-136-021945-
Appling GA-Wayne GA-
243 PM EDT SAT JUN 2 2018

...SIGNIFICANT WEATHER ADVISORY FOR WAYNE AND CENTRAL APPLING
COUNTIES UNTIL 345 PM EDT...

At 243 PM EDT, Doppler radar was tracking a strong thunderstorm over
Baxley, moving east at 15 mph.

Nickel size hail and wind gusts of 45 to 55 mph can be expected along
with possible minor damage.

Locations impacted include...
Jesup, Baxley, Surrency, Gardi, Screven, Odum, Doctortown and
Broadhurst.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southeastern Georgia.

LAT...LON 3178 8198 3179 8196 3176 8194 3175 8191
      3173 8191 3171 8188 3167 8185 3165 8182
      3166 8181 3165 8180 3161 8177 3161 8175
      3160 8175 3161 8174 3158 8170 3156 8170
      3140 8189 3166 8243 3176 8238 3180 8200
TIME...MOT...LOC 1843Z 284DEG 15KT 3173 8234

ENYEDI

Special weather statement, Jun 2, 3:38 PM EDT, 24 minutes before

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Local storm report, Jun 2, 3:39 PM EDT, 23 minutes before

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Special weather statement, Jun 2, 3:40 PM EDT, 22 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 1, 8:09 PM EDT	Areal Flood Warning	JAX	Putnam	2 hr
Jun 1, 9:57 PM EDT	Areal Flood Advisory	JAX	Alachua, Bradford	35 min
Jun 2, 7:02 AM EDT	River Flood Warning	JAX	Baker, Nassau	24 hr
Jun 2, 1:29 PM EDT	Special Weather Statement	JAX	Duval	46 min
Jun 2, 2:13 PM EDT	Special Marine Warning	JAX		62 min
Jun 2, 3:11 PM EDT	Special Marine Warning	JAX		64 min
Jun 2, 3:38 PM EDT	Special Weather Statement	JAX	Hamilton	52 min
Jun 2, 4:21 PM EDT	Special Weather Statement	JAX	Baker	39 min
Jun 2, 4:23 PM EDT	Special Marine Warning	JAX		97 min
Jun 2, 4:42 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Hamilton, Suwannee	48 min
Jun 2, 4:53 PM EDT	Special Weather Statement	JAX	Nassau	22 min
Jun 2, 4:57 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	48 min
Jun 2, 5:02 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia	43 min
Jun 2, 5:11 PM EDT	Special Weather Statement	JAX	Suwannee	49 min
Jun 2, 5:13 PM EDT	Special Marine Warning	JAX		92 min
Jun 2, 5:16 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	44 min
Jun 2, 5:25 PM EDT	Tornado Warning	JAX	Baker, Columbia	35 min
Jun 2, 5:35 PM EDT	Special Weather Statement	JAX	Bradford	40 min
Jun 2, 5:40 PM EDT	Severe Thunderstorm Warning	JAX	Bradford, Clay, Union	50 min
Jun 2, 5:52 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Clay, Duval, Nassau	22 min
Jun 2, 5:53 PM EDT	Special Marine Warning	JAX		97 min
Jun 2, 5:57 PM EDT	Special Weather Statement	JAX	Duval	33 min
Jun 2, 5:59 PM EDT	Special Marine Warning	JAX		91 min
Jun 2, 6:05 PM EDT	Special Weather Statement	JAX	Clay	40 min
Jun 2, 6:12 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Duval, Saint Johns	52 min
Jun 2, 6:17 PM EDT	Severe Thunderstorm Warning	JAX	Bradford, Clay, Saint Johns	43 min
Jun 2, 6:23 PM EDT	Special Weather Statement	JAX	Putnam	52 min
Jun 2, 6:27 PM EDT	Special Marine Warning	JAX		93 min
Jun 2, 6:27 PM EDT	Special Weather Statement	JAX	Flagler	48 min
Jun 2, 6:36 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Saint Johns	39 min
Jun 2, 6:45 PM EDT	Severe Thunderstorm Warning	JAX	Flagler	45 min
Jun 2, 6:48 PM EDT	Special Weather Statement	JAX	Saint Johns	42 min
Jun 2, 6:52 PM EDT	Special Marine Warning	JAX		68 min
Jun 2, 7:29 PM EDT	Special Marine Warning	JAX		61 min
Jun 1, 8:05 PM EDT	Areal Flood Warning	JAX	Camden	115 min
Jun 1, 8:29 PM EDT	Areal Flood Advisory	JAX	Appling, Pierce, Wayne	2 hr
Jun 1, 8:44 PM EDT	Special Weather Statement	JAX	Wayne	46 min
Jun 2, 12:36 PM EDT	Special Weather Statement	JAX	Atkinson	39 min
Jun 2, 12:49 PM EDT	Special Weather Statement	JAX	Atkinson	26 min
Jun 2, 1:12 PM EDT	Special Weather Statement	JAX	Atkinson	48 min
Jun 2, 1:35 PM EDT	Special Weather Statement	JAX	Clinch	40 min
Jun 2, 1:56 PM EDT	Special Weather Statement	JAX	Pierce	49 min
Jun 2, 2:01 PM EDT	Special Weather Statement	JAX	Bacon	44 min
Jun 2, 2:17 PM EDT	Special Weather Statement	JAX	Wayne	43 min
Jun 2, 2:24 PM EDT	Special Weather Statement	JAX	Long	36 min
Jun 2, 2:27 PM EDT	Special Weather Statement	JAX	Appling	33 min
Jun 2, 2:32 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Wayne	43 min
Jun 2, 2:35 PM EDT	Special Weather Statement	JAX	Coffee	25 min
Jun 2, 2:38 PM EDT	Special Weather Statement	JAX	Brantley	52 min
Jun 2, 2:43 PM EDT	Special Weather Statement	JAX	Appling, Wayne	62 min
Jun 2, 2:49 PM EDT	Severe Thunderstorm Warning	JAX	Bacon, Coffee, Jeff Davis	41 min
Jun 2, 3:07 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	38 min
Jun 2, 3:22 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Bacon, Coffee, Jeff Davis	38 min
Jun 2, 3:25 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	50 min
Jun 2, 3:40 PM EDT	Special Weather Statement	JAX	Atkinson	50 min
Jun 2, 4:09 PM EDT	Special Weather Statement	JAX	Brantley, Pierce, Ware	51 min
Jun 2, 4:13 PM EDT	Special Weather Statement	JAX	Clinch, Echols	62 min
Jun 2, 4:33 PM EDT	Severe Thunderstorm Warning	JAX	Brantley, Charlton, Ware	57 min
Jun 2, 4:34 PM EDT	Special Weather Statement	JAX	Wayne	41 min
Jun 2, 5:12 PM EDT	Special Weather Statement	JAX	Glynn	48 min

Nearby

Severe Thunderstorm Warnings in Florida, 2018 Severe Thunderstorm Warnings in Georgia, 2018 Every severe thunderstorm warning in 2018

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.