Alert archive / Florida / High Surf Advisories in 2017
High Surf Advisory 10, NWS Jacksonville, FL
NWS Jacksonville, FL issued this high surf advisory at Nov 10, 2017, 2:36 PM EST for Duval County, Flagler County, Nassau County, Florida. It took effect at Nov 11, 2017, 7:00 AM EST. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Nov 10, 2017, 2:36 PM EST (19:36 UTC)
- In effect from
- Nov 11, 2017, 7:00 AM EST
- Expired
- Nov 12, 2017, 3:42 AM EST
- In force
- 21 hr
- Issued by
- NWS Jacksonville, FL
Counties Duval County, FL, Flagler County, FL, Nassau County, FL
The radar
The Jacksonville radar (KJAX), 40 km from the middle of the area, began a volume at 19:33 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 213 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 763 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 122 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 Nov 10, 2:30 PM EST, 6 minutes earlier.
Area forecast discussion, Nov 10, 2:30 PM EST, 6 minutes before
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</html>Hazardous weather outlook, Nov 10, 3:01 AM EST, 11 hours 35 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 |
|---|---|---|---|---|
| Nov 10, 2:13 AM EST | Rip Current Statement | JAX | Duval, Flagler, Nassau | 66 hr |
Nearby
High Surf Advisories in Florida, 2017Every high surf advisory 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.