Alert archive / Florida / Areal Flood Warnings in 2021

Areal Flood Warning 92, NWS Jacksonville, FL

September 21, 2021Marion County, Putnam County, Florida

NWS Jacksonville, FL issued this areal flood warning at Sep 21, 2021, 7:24 PM EDT for Marion County, Putnam County, Florida. It was in force for 78 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: Sep 21, 2021, 7:24 PM EDT (23:24 UTC)
Expired: Sep 21, 2021, 8:42 PM EDT
In force: 78 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Flood severity: None

Counties Marion County, FL, Putnam County, FL

The radar

The Jacksonville radar (KJAX), 121 km from the middle of the area, began a volume at 23:26 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 areal flood 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 areal flood warning went out at Sep 21, 3:33 PM EDT, 3 hours 51 minutes earlier.

Area forecast discussion, Sep 21, 3:33 PM EDT, 3 hours 51 minutes before

Area Forecast Discussion
National Weather Service Jacksonville FL
333 PM EDT Tue Sep 21 2021

.Near Term.../through Wednesday/...

Numerous showers and thunderstorms this afternoon and evening, as a
trough of low pressure lays west to east across region, and the east
coast and gulf sea breezes move inland and collide. Heavy rainfall
will be possible with Todays activity, especially over central
counties where sea breeze boundaries intersect. With loss of diurnal
heating, chances will decrease overnight. Lows in the lower 70s are
expected.

A cold front will move southeast into SE GA Wednesday morning, then
slowly move southeast across forecast area Wednesday. Ample moisture
ahead of and along front, for rounds of showers with embedded
thunderstorms through the day. Highs Wednesday will be in the middle
to upper 80s.

&&

.Short Term.../Wednesday night through Saturday/...

The front will pass just to the southeast Wednesday night where it
will stall. The boundary will be stalled to the southeast through
this period, while it slowly weakens. High pressure will build from
the northwest through Thursday night, then more toward the north.
The proximity of the frontal boundary will keep moisture across
southeastern areas through Friday, while drier and cooler air filter
in from the northwest. Will include a chance for precipitation over
southeastern counties through Friday, but if the push of the cooler
and drier air is strong enough, could be dry across forecast area
through Friday. For Saturday, with the high to the north, onshore
flow will increase moisture, especially across NE FL where it will
already have not been as dry. So precipitation chances to increase
Saturday, especially for NE FL.

Temperatures will vary widely from NW to SE across forecast area
this period, as cooler and drier air filters south. For example,
Lows in the 50s will be common across SE GA Thursday night and
Friday night, while lows in the lower 70s will be common near the
NE FL coast.

&&

.Long Term.../Saturday night through Tuesday/...

High pressure will be centered to the north of the area this period.
This is expected to be a mainly dry period. The exception will be
south of Interstate 10, where onshore flow could provide enough
moisture for precipitation.

Highs will be fairly consistent this period with readings generally
getting into the middle 80s. Lows will still vary quite a bit
though, as onshore flow keeps readings up closer to the coast.

&&

.Marine...

A weak trough will linger across the region through Tonight, as a
surface high pressure ridge moves to the northeast. A cold front
will slowly move east southeast across area Wednesday into Wednesday
night. The boundary will stall just to the east southeast Thursday,
as high pressure builds to the northwest. The boundary will linger
to the east southeast into Saturday, as it dissipates. High pressure
will build over the weekend into next week.

Rip Currents: SE GA: Moderate Today, Low Wednesday
              NE FL: Moderate Today, Low Wednesday

&&

.PRELIMINARY POINT TEMPS/POPS...

AMG  71  87  60  79  56 /  60  60  30   0   0
SSI  74  85  66  82  67 /  30  60  40  10   0
JAX  73  88  67  84  63 /  60  60  40  10   0
SGJ  73  87  70  83  71 /  40  60  40  20  10
GNV  72  87  68  84  65 /  60  60  30  10   0
OCF  73  87  70  87  68 /  60  60  30  20  10

&&

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

In the hours before

Special weather statement, Sep 21, 5:23 PM EDT, 2 hours 1 minute before

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Special weather statement, Sep 21, 5:39 PM EDT, 1 hour 45 minutes before

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Local storm report, Sep 21, 6:13 PM EDT, 1 hour 11 minutes before

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Special weather statement, Sep 21, 6:27 PM EDT, 57 minutes before

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Local storm report, Sep 21, 7:10 PM EDT, 14 minutes before

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Special weather statement, Sep 21, 7:15 PM EDT, 9 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 21, 1:00 PM EDT	Special Weather Statement	JAX	Suwannee	60 min
Sep 21, 3:14 PM EDT	Special Weather Statement	JAX	Duval	46 min
Sep 21, 3:33 PM EDT	Areal Flood Warning	JAX	Duval	77 min
Sep 21, 4:34 PM EDT	Special Weather Statement	JAX	Saint Johns	41 min
Sep 21, 4:47 PM EDT	Special Weather Statement	JAX	Bradford	43 min
Sep 21, 5:12 PM EDT	Areal Flood Warning	JAX	Bradford, Clay, Union	84 min
Sep 21, 5:23 PM EDT	Special Weather Statement	JAX	Clay	52 min
Sep 21, 5:39 PM EDT	Special Weather Statement	JAX	Clay, Putnam	51 min
Sep 21, 6:16 PM EDT	Areal Flood Warning	JAX	Clay, Putnam	98 min
Sep 21, 6:27 PM EDT	Special Weather Statement	JAX	Marion	48 min
Sep 21, 7:15 PM EDT	Special Weather Statement	JAX	Marion, Putnam	45 min
Sep 21, 4:02 PM EDT	Special Weather Statement	JAX	Clinch	28 min
Sep 21, 4:59 PM EDT	River Flood Warning	JAX	Pierce, Ware	18 hr

Nearby

Areal Flood Warnings in Florida, 2021 Every areal flood 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; radar from the NEXRAD Level II archive.