Alert archive / Florida / Areal Flood Warnings in 2017

Areal Flood Warning 49, NWS Jacksonville, FL

September 10, 2017Nassau County, Florida; Camden County, Georgia

NWS Jacksonville, FL issued this areal flood warning at Sep 10, 2017, 4:11 PM EDT for Nassau County, Florida; Camden County, Georgia. It was in force for 3 hr. 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 10, 2017, 4:11 PM EDT (20:11 UTC)
Expired
Sep 10, 2017, 7:15 PM EDT
In force
3 hr
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Flood severity
None

Counties Nassau County, FL, Camden County, GA

The radar

The Jacksonville radar (KJAX), 31 km from the middle of the area, began a volume at 20:14 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 10, 2:41 PM EDT, 1 hour 30 minutes earlier.

Area forecast discussion, Sep 10, 2:41 PM EDT, 1 hour 30 minutes before
Area Forecast Discussion
National Weather Service Jacksonville FL
241 PM EDT Sun Sep 10 2017

.SHORT TERM...This afternoon-Monday night...Irma rainbands are
beginning to enter the area and with them, the tornado threat will
continue to increase from south to north through tonight. Expect
conditions across northeastern Florida and southeastern Georgia to
deteriorate further tonight as Irma moves north over the western
part of the Florida peninsula with winds increasing and heavy
rainfall across the entire area. See the Hurricane Local Statement
for more details about the Irma forecast and impacts.

Conditions won't begin to improve behind Irma until at least
Monday afternoon. Rainfall will quickly drop off Monday night as
dry air moves in on the back side of the storm. However, flooding
impacts are likely to continue even after the rain ends. Only
minor forecast updates this afternoon in the short term with all
eyes on Irma.

.LONG TERM...Tuesday-Sunday...Irma is expected to be to the
northwest Tuesday, with weak high pressure building over the
forecast area. Expecting a primarily dry day for Tuesday with
subsidence under the ridge. A moist south to southwesterly flow
is expected for Wednesday with showers and storms developing with
diurnal heating. This pattern will continue into Thursday. A great
deal of uncertainty in the forecast late in the week into the
weekend. The extended range models are looping Hurricane Jose
around this week, such that it is located to the East of the
region over the upcoming weekend. The location of this system
would have a significant impact on the overall pattern over the
region, even if it stays well East. At this time the forecast will
reflect the potential of this system to be to the East. The
forecast for next weekend will then be refined this week as the
track of Jose can better be determined.

&&

.AVIATION...Conditions will continue to deteriorate this evening.
Rain bands will continue producing restrictions, with wind speeds
increasing. Winds will remain strong throughout this 18z TAF
period due to hurricane Irma.

&&

.MARINE...Conditions will continue to deteriorate through
Monday as Hurricane Irma is forecast to track over the western
Florida peninsula. A Hurricane Warning is in effect for the NE FL
waters and a Hurricane Watch and Tropical Storm Warning are in
effect for the SE GA waters.

Effects from Irma will begin to subside late Monday, but seas
aren't likely to drop below 7 ft until late Tuesday in the
nearshore waters and Wednesday across the offshore waters. Behind
Irma, winds will turn to out of the south Monday night and slowly
decrease through Tuesday. Winds and seas look relatively benign
Wednesday and Thursday, but focus will then shift to the track of
Hurricane Jose, which could impact the waters, even from afar,
later this week and next weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  66  77  63  84 / 100 100  40  10
SSI  75  82  71  86 / 100 100  30  10
JAX  75  81  69  88 / 100 100  20  10
SGJ  76  84  72  88 / 100 100  20  10
GNV  72  79  69  87 / 100 100  20  10
OCF  74  80  70  88 / 100 100  20  10

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...Flash Flood Watch through Monday evening for Alachua-Baker-
     Bradford-Clay-Coastal Duval-Coastal Nassau-Columbia-Flagler-
     Gilchrist-Hamilton-Inland Duval-Inland Nassau-Marion-Putnam-
     St. Johns-Suwannee-Union.

     Hurricane Warning for Alachua-Baker-Bradford-Clay-Coastal Duval-
     Coastal Nassau-Columbia-Flagler-Gilchrist-Hamilton-Inland
     Duval-Inland Nassau-Marion-Putnam-St. Johns-Suwannee-Union.

GA...Flash Flood Watch through Monday evening for Appling-Atkinson-
     Bacon-Brantley-Charlton-Clinch-Coastal Camden-Coastal Glynn-
     Coffee-Echols-Inland Camden-Inland Glynn-Jeff Davis-Pierce-
     Ware-Wayne.

     Tropical Storm Warning for Appling-Bacon-Brantley-Charlton-
     Coastal Camden-Coastal Glynn-Coffee-Inland Camden-Inland
     Glynn-Jeff Davis-Pierce-Ware-Wayne.

     Hurricane Watch for Coastal Camden-Coastal Glynn-Inland Camden-
     Inland Glynn.

     Hurricane Warning for Atkinson-Clinch-Echols.

AM...Tropical Storm Warning for Coastal waters from Altamaha Sound to
     Fernandina Beach FL out 20 NM-Waters from Altamaha Sound GA
     to Fernandina Beach FL from 20 to 60 NM.

     Hurricane Watch for Coastal waters from Altamaha Sound to
     Fernandina Beach FL out 20 NM-Waters from Altamaha Sound GA
     to Fernandina Beach FL from 20 to 60 NM.

     Hurricane Warning for 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
     Fernandina Beach to St. Augustine FL from 20 to 60 NM-
     Waters from St. Augustine to Flagler Beach FL from 20 to 60
     NM.

&&

Struble//McGinnis
Hazardous weather outlook, Sep 10, 6:09 AM EDT, 10 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Jacksonville FL
609 AM EDT Sun Sep 10 2017

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125-
GAZ132>136-149>154-162>166-101800-
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-
609 AM EDT Sun Sep 10 2017

This Hazardous Weather Outlook is for Northeast Florida,
Southeast Georgia and the Adjacent Coastal Waters.

Please refer to the Hurricane Local Statement for information
regarding the approach of major Hurricane Irma.

For additional information, visit the National Weather Service in
Jacksonville website on the internet at weather.gov/jax.

In the hours before

Local storm report, Sep 10, 12:15 PM EDT, 3 hours 56 minutes before
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Local storm report, Sep 10, 12:27 PM EDT, 3 hours 44 minutes before
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Local storm report, Sep 10, 12:54 PM EDT, 3 hours 17 minutes before
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Local storm report, Sep 10, 1:18 PM EDT, 2 hours 53 minutes before
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Local storm report, Sep 10, 3:05 PM EDT, 1 hour 6 minutes before
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Local storm report, Sep 10, 3:17 PM EDT, 54 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 9:25 PM EDTRiver Flood WarningJAXClay5 days
Sep 9, 9:27 PM EDTRiver Flood WarningJAXBaker, Nassau16 days
Sep 9, 9:39 PM EDTRiver Flood WarningJAXAlachua, Columbia, Gilchrist32 days
Sep 9, 9:42 PM EDTRiver Flood WarningJAXClay5 days
Sep 10, 5:10 AM EDTSpecial Marine WarningJAX65 min
Sep 10, 6:18 AM EDTAreal Flood WarningJAXBaker, Bradford, Clay, Duval, Saint Johns6 hr
Sep 10, 8:14 AM EDTAreal Flood WarningJAXClay, Putnam3 hr
Sep 10, 9:11 AM EDTAreal Flood WarningJAXAlachua, Bradford, Clay, Columbia, Gilchrist, Union3 hr
Sep 10, 9:59 AM EDTRiver Flood WarningJAXColumbia, Hamilton, Suwannee3 days
Sep 10, 9:59 AM EDTRiver Flood WarningJAXHamilton, Suwannee5 days
Sep 10, 10:12 AM EDTAreal Flood WarningJAXAlachua, Flagler, Marion, Putnam3 hr
Sep 10, 11:57 AM EDTAreal Flood WarningJAXAlachua, Bradford, Clay, Flagler, Putnam, Saint Johns3 hr
Sep 10, 12:05 PM EDTSpecial Marine WarningJAX25 min
Sep 10, 12:09 PM EDTAreal Flood WarningJAXClay, Duval, Nassau, Saint Johns3 hr
Sep 10, 12:19 PM EDTTornado WarningJAXFlagler, Saint Johns22 min
Sep 10, 1:11 PM EDTAreal Flood WarningJAXNassau3 hr
Sep 10, 1:28 PM EDTTornado WarningJAXFlagler32 min
Sep 10, 3:09 PM EDTAreal Flood WarningJAXFlagler, Putnam3 hr
Sep 10, 4:39 PM EDTAreal Flood WarningJAXClay, Duval, Saint Johns3 hr
Sep 10, 4:39 PM EDTTornado WarningJAXSaint Johns24 min
Sep 10, 4:58 PM EDTAreal Flood WarningJAXDuval, Nassau, Saint Johns3 hr
Sep 10, 5:21 PM EDTAreal Flood WarningJAXClay, Flagler, Putnam, Saint Johns3 hr
Sep 10, 5:43 PM EDTAreal Flood WarningJAXDuval, Nassau3 hr
Sep 10, 5:48 PM EDTAreal Flood WarningJAXFlagler, Putnam3 hr
Sep 10, 7:36 PM EDTTornado WarningJAXFlagler24 min
Sep 10, 7:42 PM EDTTornado WarningJAXSaint Johns33 min
Sep 10, 7:59 PM EDTAreal Flood WarningJAXNassau3 hr
Sep 9, 9:21 PM EDTRiver Flood WarningJAXEchols36 hr
Sep 10, 5:13 PM EDTFlash Flood WarningJAXCamden3 hr
Sep 10, 5:41 PM EDTAreal Flood WarningJAXCamden, Glynn3 hr

Nearby

Areal Flood Warnings in Florida, 2017Areal Flood Warnings in Georgia, 2017Every areal flood 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.