Alert archive / Florida / High Surf Advisories in 2018
High Surf Advisory 3, NWS Jacksonville, FL
NWS Jacksonville, FL issued this high surf advisory at Sep 12, 2018, 3:14 PM EDT for Duval County, Flagler County, Nassau County, Florida; Camden County, Glynn County, Georgia. It took effect at Sep 12, 2018, 8:00 PM EDT. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Sep 12, 2018, 3:14 PM EDT (19:14 UTC)
- In effect from
- Sep 12, 2018, 8:00 PM EDT
- Expired
- Sep 13, 2018, 8:00 PM EDT
- In force
- 24 hr
- Issued by
- NWS Jacksonville, FL
Counties Duval County, FL, Flagler County, FL, Nassau County, FL, Camden County, GA, Glynn County, GA
The radar
The Jacksonville radar (KJAX), 13 km from the middle of the area, began a volume at 19:18 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, 7.2 hours before the alert went out and 249 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
- 1161 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 913 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- -26 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 Sep 12, 9:32 AM EDT, 5 hours 42 minutes earlier.
Area forecast discussion, Sep 12, 9:32 AM EDT, 5 hours 42 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 |
|---|---|---|---|---|
| Sep 11, 10:59 PM EDT | Areal Flood Advisory | JAX | Alachua | 2 hr |
| Sep 11, 11:24 PM EDT | Areal Flood Advisory | JAX | Alachua, Marion | 2 hr |
| Sep 12, 2:55 AM EDT | Small Craft Advisory for Hazardous Seas | JAX | 48 hr | |
| Sep 11, 9:14 PM EDT | Special Weather Statement | JAX | Atkinson | 46 min |
| Sep 11, 10:08 PM EDT | Special Weather Statement | JAX | Ware | 37 min |
| Sep 11, 10:41 PM EDT | Areal Flood Advisory | JAX | Atkinson, Ware | 2 hr |
| Sep 11, 11:22 PM EDT | Areal Flood Advisory | JAX | Clinch | 113 min |
Nearby
High Surf Advisories in Florida, 2018High Surf Advisories in Georgia, 2018Every high surf advisory in 2018
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.