Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 189, NWS Jacksonville, FL

June 30, 2017Camden County, Glynn County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 30, 2017, 5:39 PM EDT for Camden County, Glynn 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 counties it named.

The facts

Issued: Jun 30, 2017, 5:39 PM EDT (21:39 UTC)
Expired: Jun 30, 2017, 6:30 PM EDT
In force: 51 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Camden County, GA, Glynn County, GA

The radar

The Jacksonville radar (KJAX), 66 km from the middle of the area, began a volume at 21:40 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.

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 30, 2:25 PM EDT, 3 hours 14 minutes earlier.

Area forecast discussion, Jun 30, 2:25 PM EDT, 3 hours 14 minutes before

Area Forecast Discussion
National Weather Service Jacksonville FL
225 PM EDT Fri Jun 30 2017

.NEAR TERM /Through Saturday/...

Weak shortwave will pass just N of forecast area through Tonight
with upper ridge remains over FL peninsula. Expecting scattered to
numerous afternoon/evening showers and t-storms...with greatest
coverage between I-75 and I-95 corridors where sea breezes
converge...maintaining likely POP in this area til 00z along
with s-ctrl GA where increased coverage possible closer to the
shortwave...then a gradual decrease in hourly POP thru 06z.
Low temps in mid 70s looks good.

Saturday...another weak wave north of our area...with upper ridge
over FL. Anticipate similar weather compared to today...with greatest
late afternoon precipitation coverage between I-95 and Hwy 301.
as well as interior se GA along possible surface trough. Consensus
guidance supports high temp forecast in the lower 90s inland...near
90 coast.

.SHORT TERM /Sunday and Monday/...

Hot and humid conditions with scattered to numerous storms each
afternoon and evening. Light pressure gradient at the surface will
allow both seabreezes to push inland. Upper ridge axis will be
positioned just south of the area, so the steering flow should
push the storms back towards the Atlantic coast after the
seabreezes collide and storms increase in intensity and coverage.
The high moisture content and very unstable atmosphere will
support a few strong to severe storms each afternoon. Merging
cells will likely produce locally heavy rainfall, strong gusty
winds, and frequent lightning strikes. Temperatures will check in
just a little above normal for this time of year.

.LONG TERM /Tuesday through Friday/...

The summer-like pattern will persist into next week. A very moist
and unstable airmass with a slight weakness in the subtropical
ridge will help produce daily seabreeze storms over ne Fl/se Ga.
Scattered storms will become numerous over the interior where the
Gulf and Atlantic seabreeze fronts will merge by the early evening
hours. Temperatures will be near or just slightly above average
with above average storm chances for at least the first part of
the week. The upper ridge may shift northward into our area
Wednesday night into Thursday and this may draw up some drier air
which would result in more normal thunderstorm chances on
Thursday, especially across northeast Florida where drier air
aloft is possible.

&&

.AVIATION...Generally VFR conditions expected...except lower
conditions associated with scattered to numerous afternoon/early
evening SHRA/TSRA. Greatest coverage anticipated to be 20z-00z
period as sea breezes converge over inland TAF sites. Heavy rain
and gusty surface winds with storms.

&&

.MARINE...Surface ridge of high pressure will remain just S of our
waters...maintaining southerly 10-15kt winds and 2-4ft seas through
early next week.

.Rip Currents...Low risk expected through the weekend...but may be
briefly enhanced in typical threat areas...by piers...particularly
during afternoon sea breezes.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  74  93  74  95 /  50  40  20  40
SSI  77  89  77  91 /  60  50  30  40
JAX  75  92  75  93 /  50  60  30  40
SGJ  76  89  76  90 /  40  40  30  40
GNV  74  92  74  93 /  40  60  20  50
OCF  75  91  75  92 /  40  60  20  60

&&

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

Wolf/Shuler/

Hazardous weather outlook, Jun 30, 2:50 AM EDT, 14 hours 49 minutes before

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In the hours before

Special weather statement, Jun 30, 4:48 PM EDT, 51 minutes before

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Special weather statement, Jun 30, 5:14 PM EDT, 25 minutes before

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Special weather statement, Jun 30, 5:18 PM EDT, 21 minutes before

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Special weather statement, Jun 30, 5:20 PM EDT, 19 minutes before

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Special weather statement, Jun 30, 5:30 PM EDT, 9 minutes before

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Special weather statement, Jun 30, 5:35 PM EDT, 4 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 29, 8:24 PM EDT	Special Weather Statement	JAX	Marion	36 min
Jun 29, 9:36 PM EDT	Areal Flood Advisory	JAX	Marion	84 min
Jun 30, 1:52 PM EDT	Special Weather Statement	JAX	Suwannee	38 min
Jun 30, 2:31 PM EDT	Special Weather Statement	JAX	Columbia	29 min
Jun 30, 3:22 PM EDT	Special Weather Statement	JAX	Baker	38 min
Jun 30, 3:39 PM EDT	Special Weather Statement	JAX	Marion	36 min
Jun 30, 4:43 PM EDT	Special Weather Statement	JAX	Nassau	32 min
Jun 30, 5:14 PM EDT	Special Weather Statement	JAX	Marion	31 min
Jun 30, 5:20 PM EDT	Special Weather Statement	JAX	Nassau	25 min
Jun 30, 5:26 PM EDT	Special Marine Warning	JAX		64 min
Jun 30, 5:35 PM EDT	Special Weather Statement	JAX	Nassau	40 min
Jun 30, 5:45 PM EDT	Special Marine Warning	JAX		90 min
Jun 30, 6:35 PM EDT	Special Weather Statement	JAX	Saint Johns	40 min
Jun 30, 6:38 PM EDT	Special Weather Statement	JAX	Flagler	52 min
Jun 30, 6:42 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Putnam, Saint Johns	37 min
Jun 30, 7:08 PM EDT	Special Weather Statement	JAX	Putnam	52 min
Jun 29, 9:06 PM EDT	Areal Flood Advisory	JAX	Appling	84 min
Jun 30, 4:29 PM EDT	Special Weather Statement	JAX	Camden	31 min
Jun 30, 4:48 PM EDT	Special Weather Statement	JAX	Camden	27 min
Jun 30, 5:18 PM EDT	Special Weather Statement	JAX	Camden	27 min
Jun 30, 5:30 PM EDT	Special Weather Statement	JAX	Glynn	45 min
Jun 30, 6:12 PM EDT	Special Weather Statement	JAX	Glynn	18 min
Jun 30, 6:17 PM EDT	Special Weather Statement	JAX	Glynn	13 min
Jun 30, 6:21 PM EDT	Severe Thunderstorm Warning	JAX	Glynn, Wayne	24 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017 Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.