Alert archive / Florida / Special Marine Warnings in 2021

Special Marine Warning 87, NWS Jacksonville, FL

June 12, 2021

NWS Jacksonville, FL issued this special marine warning at Jun 12, 2021, 3:33 PM EDT. It was in force for 87 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 12, 2021, 3:33 PM EDT (19:33 UTC)
Expired: Jun 12, 2021, 5:00 PM EDT
In force: 87 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 0.0 in
Wind: 40.0 mph

What forecasters said that day

The local office's own words before this special marine 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 special marine warning went out at Jun 12, 3:17 PM EDT, 16 minutes earlier.

Area forecast discussion, Jun 12, 3:17 PM EDT, 16 minutes before

Area Forecast Discussion
National Weather Service Jacksonville FL
317 PM EDT Sat Jun 12 2021

.Short Term.../through Monday/...

A cold front will move into SE GA this afternoon, then nearly
stationary near the GA/FL line through Tonight. The area will also
be in the base of an 500mb trough through Tonight. The combination
of diurnal heating, frontal convergence, and upper energy will
provide for an increased chance for convection this afternoon and
evening. While the activity will decrease in coverage through the
night due to loss of diurnal heating, storm chances will linger.

On Sunday, the cold front will remain across the region with the
500mb trough in place. Scattered to numerous storms will be expected
once again.

The frontal boundary will sink to the southeast and weaken Sunday
night.

For Monday, the upper trough will remain over the region, with the
combination of diurnal heating and upper support leading to
scattered to numerous storms. The best chance will be across NE FL,
closer to the dissipating cold frontal zone.

Temperatures will trend around seasonal averages this period.

&&

.Long Term.../Monday night through Saturday/...

Another frontal boundary will slide southeast into SE GA Monday
night. The boundary will move to near the GA/FL line Tuesday and
stall through Thursday. Above average coverage of showers and storms
will be expected through Thursday due to the frontal convergence and
diurnal instability. The greatest chance for storms will be across
NE FL.

Another trough will be over the region Friday into Saturday,
enhancing the diurnally driven convective activity.

Temperatures will trend near to a little above normal early in the
period, then near to a little below.

&&

.Marine...

A few troughs will affect the region over the next week, leading
to a period with above average chances for showers and storms.

Rip Currents: SE GA: Low through Sunday
              NE FL: Low through Sunday

&&

.PRELIMINARY POINT TEMPS/POPS...

AMG  70  87  69  91  71 /  70  40  20  30  10
SSI  73  85  73  84  74 /  50  40  40  30  20
JAX  72  91  70  89  71 /  30  50  50  50  20
SGJ  73  89  71  86  73 /  30  60  50  60  30
GNV  73  90  70  87  71 /  30  60  60  70  30
OCF  73  89  72  87  72 /  30  60  60  70  30

&&

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

In the hours before

Local storm report, Jun 12, 2:54 PM EDT, 39 minutes before

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Local storm report, Jun 12, 3:10 PM EDT, 23 minutes before

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Local storm report, Jun 12, 3:13 PM EDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
National Weather Service Jacksonville FL
313 PM EDT SAT JUN 12 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0253 PM     TSTM WND GST     5 NNE ORANGE PARK       30.24N 81.68W
06/12/2021  M40 MPH          Duval              FL   AWOS

            JACKSONVILLE NAVAL AIR STATION REPORTED A 40 MPH WIND
            GUST.

&&

MZ

Special weather statement, Jun 12, 3:25 PM EDT, 8 minutes before

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Special weather statement, Jun 12, 3:27 PM EDT, 6 minutes before

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Local storm report, Jun 12, 3:27 PM EDT, 6 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 12, 12:51 PM EDT	Special Weather Statement	JAX	Gilchrist	24 min
Jun 12, 1:22 PM EDT	Special Weather Statement	JAX	Alachua, Bradford, Clay, Gilchrist, Putnam, Union	38 min
Jun 12, 1:50 PM EDT	Special Weather Statement	JAX	Clay, Putnam	40 min
Jun 12, 1:59 PM EDT	Special Weather Statement	JAX	Suwannee	46 min
Jun 12, 2:11 PM EDT	Special Weather Statement	JAX	Bradford, Clay	49 min
Jun 12, 2:15 PM EDT	Special Marine Warning	JAX		90 min
Jun 12, 2:46 PM EDT	Special Weather Statement	JAX	Hamilton	44 min
Jun 12, 2:50 PM EDT	Special Weather Statement	JAX	Clay, Saint Johns	40 min
Jun 12, 2:51 PM EDT	Special Marine Warning	JAX		84 min
Jun 12, 2:53 PM EDT	Special Weather Statement	JAX	Columbia, Union	37 min
Jun 12, 2:59 PM EDT	Severe Thunderstorm Warning	JAX	Duval	14 min
Jun 12, 3:22 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Hamilton	53 min
Jun 12, 3:25 PM EDT	Special Weather Statement	JAX	Nassau	50 min
Jun 12, 3:27 PM EDT	Special Weather Statement	JAX	Suwannee	48 min
Jun 12, 4:10 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Columbia, Hamilton, Nassau, Union	25 min
Jun 12, 4:15 PM EDT	Special Weather Statement	JAX	Nassau	45 min
Jun 12, 5:26 PM EDT	Special Marine Warning	JAX		64 min
Jun 12, 2:02 PM EDT	Special Weather Statement	JAX	Glynn	43 min
Jun 12, 3:46 PM EDT	Special Weather Statement	JAX	Wayne	44 min
Jun 12, 4:27 PM EDT	Special Weather Statement	JAX	Wayne	48 min
Jun 12, 4:37 PM EDT	Special Weather Statement	JAX	Camden	38 min
Jun 12, 5:00 PM EDT	Special Weather Statement	JAX	Brantley	30 min
Jun 12, 5:10 PM EDT	Special Weather Statement	JAX	Brantley, Pierce	50 min
Jun 12, 5:20 PM EDT	Severe Thunderstorm Warning	JAX	Brantley	25 min
Jun 12, 5:22 PM EDT	Special Weather Statement	JAX	Atkinson	53 min
Jun 12, 5:37 PM EDT	Special Weather Statement	JAX	Jeff Davis	38 min
Jun 12, 5:53 PM EDT	Special Weather Statement	JAX	Brantley, Pierce	52 min
Jun 12, 5:56 PM EDT	Special Weather Statement	JAX	Atkinson	49 min
Jun 12, 6:44 PM EDT	Special Weather Statement	JAX	Atkinson	46 min
Jun 12, 7:02 PM EDT	Special Weather Statement	JAX	Coffee	28 min
Jun 12, 7:12 PM EDT	Special Weather Statement	JAX	Wayne	33 min
Jun 12, 7:21 PM EDT	Severe Thunderstorm Warning	JAX	Atkinson, Clinch, Coffee	39 min
Jun 12, 7:31 PM EDT	Special Weather Statement	JAX	Wayne	44 min
Jun 12, 7:42 PM EDT	Special Weather Statement	JAX	Appling, Jeff Davis	48 min
Jun 12, 7:45 PM EDT	Special Weather Statement	JAX	Bacon	30 min
Jun 12, 7:57 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Bacon, Coffee, Jeff Davis	33 min

Nearby

Special Marine Warnings in Florida, 2021 Every special marine warning in 2021

Sources

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