Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Jacksonville, FL

February 22, 2017Duval County, Florida

NWS Jacksonville, FL issued this special weather statement at Feb 22, 2017, 8:13 PM EST for Duval County, Florida. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 22, 2017, 8:13 PM EST (01:13 UTC)
Expired
Feb 22, 2017, 8:45 PM EST
In force
32 min
Issued by
NWS Jacksonville, FL

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 27 km from the middle of the area, began a volume at 01:15 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 nearest sounding before it

Cape Canaveral, FL (KXMR), launched 00:00Z, 1.2 hours before the alert went out and 228 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-pSkew-T log-p diagram, Cape Canaveral, FL at 00:00Z on 2017-02-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 00:00Z on 2017-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
1273 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 weather statement went out at Feb 22, 3:25 PM EST, 4 hours 48 minutes earlier.

Area forecast discussion, Feb 22, 3:25 PM EST, 4 hours 48 minutes before
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Hazardous weather outlook, Feb 22, 4:00 PM EST, 4 hours 13 minutes before
Hazardous Weather Outlook...updated
National Weather Service Jacksonville FL
400 PM EST Wed Feb 22 2017

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125-
GAZ132>136-149>154-162>166-230930-
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-
400 PM EST Wed Feb 22 2017

...ISOLATED STORMS POSSIBLE THROUGH EARLY THURSDAY...

...LOCALLY HEAVY RAIN POSSIBLE ALONG THE COAST THROUGH
EARLY THURSDAY...

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

.DAY ONE...Rest of Today and Tonight...

There is a slight chance of thunderstorms across northeast Florida
and portions of southeast Georgia through the evening...then just
along the coastal areas after midnight.

Locally heavy rainfall in excess of an inch will be possible through
early Thursday morning...mainly along the coast.

There is a Moderate risk of rip currents at the area beaches due to
increasing onshore winds and seas.

A Small Craft Advisory is in effect for the northeast Florida waters
beginning tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

An elevated risk of rip currents and very rough surf is expected at
the area beaches Thursday due to stronger onshore flow and elevated
seas.

Gale conditions possible for coastal waters mainly south of Saint
Augustine on Thursday. Small Craft Advisory is in effect rest of
coastal waters through Thursday night and possibly into Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

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

In the hours before

Special weather statement, Feb 22, 3:02 PM EST, 5 hours 11 minutes before
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Special weather statement, Feb 22, 3:31 PM EST, 4 hours 42 minutes before
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Special weather statement, Feb 22, 3:39 PM EST, 4 hours 34 minutes before
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Special weather statement, Feb 22, 8:13 PM EST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 22, 9:10 PM ESTHigh Surf AdvisoryJAXFlagler32 hr
Feb 22, 9:17 PM ESTSpecial Weather StatementJAXDuval28 min
Feb 22, 9:58 PM ESTSmall Craft AdvisoryJAX6 hr
Feb 22, 9:58 PM ESTSmall Craft AdvisoryJAX41 hr
Feb 23, 2:50 AM ESTRip Current StatementJAXDuval, Flagler, Nassau40 hr
Feb 23, 3:12 AM ESTGale WarningJAX12 hr
Feb 23, 10:35 AM ESTSpecial Weather StatementJAXFlagler, Saint Johns55 min

Nearby

Special Weather Statements in Florida, 2017Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.