Alert archive / Florida / High Surf Advisories in 2011
High Surf Advisory 1, NWS Jacksonville, FL
NWS Jacksonville, FL issued this high surf advisory at Aug 24, 2011, 3:34 PM EDT for Flagler County, Nassau County, Florida; Camden County, Glynn County, Georgia. It took effect at Aug 25, 2011, 3:31 AM EDT. It was in force for 48 hr.
The area
The counties it named.
The facts
- Issued
- Aug 24, 2011, 3:34 PM EDT (19:34 UTC)
- In effect from
- Aug 25, 2011, 3:31 AM EDT
- Expired
- Aug 27, 2011, 3:06 AM EDT
- In force
- 48 hr
- Issued by
- NWS Jacksonville, FL
Counties Flagler County, FL, Nassau County, FL, Camden County, GA, Glynn County, GA
The radar
The Jacksonville radar (KJAX), 17 km from the middle of the area, began a volume at 19:34 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, 7.6 hours before the alert went out and 253 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.
- Mixed-layer CAPE
- 134 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1246 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -57 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high surf advisory 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 high surf advisory went out at Aug 24, 3:25 PM EDT, 9 minutes earlier.
Area forecast discussion, Aug 24, 3:25 PM EDT, 9 minutes before
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</html>Hazardous weather outlook, Aug 24, 1:14 PM EDT, 2 hours 20 minutes before
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</html>The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 5:10 AM EDT | Small Craft Advisory | JAX | 30 hr | |
| Aug 24, 3:34 PM EDT | Rip Current Statement | JAX | Flagler, Nassau | 60 hr |
| Aug 23, 9:19 PM EDT | Special Weather Statement | JAX | Clinch | 26 min |
| Aug 23, 9:22 PM EDT | Areal Flood Advisory | JAX | Clinch | 83 min |
| Aug 23, 9:46 PM EDT | Special Weather Statement | JAX | Charlton | 29 min |
Nearby
High Surf Advisories in Florida, 2011High Surf Advisories in Georgia, 2011Every high surf advisory in 2011
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.