Alert archive / Florida / High Surf Advisories in 2008

High Surf Advisory 2, NWS Jacksonville, FL

September 23, 2008Flagler County, Florida

NWS Jacksonville, FL issued this high surf advisory at Sep 23, 2008, 3:03 PM EDT for Flagler County, Florida. It took effect at Sep 24, 2008, 12:00 AM EDT. It was in force for 46 hr.

The area

The counties it named.

The facts

Issued
Sep 23, 2008, 3:03 PM EDT (19:03 UTC)
In effect from
Sep 24, 2008, 12:00 AM EDT
Expired
Sep 25, 2008, 10:00 PM EDT
In force
46 hr
Issued by
NWS Jacksonville, FL

County Flagler County, FL

The radar

The Jacksonville radar (KJAX), 119 km from the middle of the area, began a volume at 19:06 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 12:00Z, 7.1 hours before the alert went out and 135 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 12:00Z on 2008-09-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1690 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2008-09-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
1690 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
550 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.9

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 23, 4:09 AM EDTLake Wind AdvisoryJAXFlagler, Nassau44 hr
Sep 23, 3:03 PM EDTCoastal Flood AdvisoryJAXFlagler, Nassau55 hr
Sep 23, 3:05 PM EDTGale WatchJAX14 hr
Sep 23, 3:05 PM EDTSmall Craft AdvisoryJAX14 hr

Nearby

High Surf Advisories in Florida, 2008Every high surf advisory in 2008

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.